REST APIs are the interface between clients and servers that allows for data to be shared across platforms, providing a seamless connection between applications, databases, and other resources. A REST API Developer is the programmer who helps clients connect their applications to a certain platform and ensure data is flowing between the two in an efficient, secure manner. This can help to reduce friction, improve performance & scalability, boost security, streamline website navigation, and more.

REST API Developers build and maintain custom programming to enable automated data retrieval and communication with a client’s desired application or platform. This can encompass services such as quickly integrating third-party payment systems into an existing website, minimizing manual work and improving customer experience. They may also incorporate priority systems; for example creating different APIs for handling bulk vs single requests for heavy workloads. Ultimately a REST API Developer helps clients bridge the gap between complex platforms and transform data into valuable business insights.

Here’s some projects that our expert REST API Developers made real:

  • Establishing communication between different applications
  • Creating priority systems for managing large volumes of requests
  • Integrating third-party payment systems into an existing website
  • Developing programming to seamlessly retrieve dynamic data
  • Designing secure connections to protect confidential information

Our highly-skilled REST API Developers are experts when it comes to stitching together the critical links which connect disparate platforms together. With years of experience they have been able to tackle innumerable projects which have led to successful outcomes for our clients. If you have an issue related to connecting your application with another platform or require automated data retrieval services then you can post your own project here on Freelancer.com and hire one of our experienced developers today!

Müşterilerimiz, REST API Developers freelancerlarımızı 49,916 değerlendirme içinden 5 üzerinden 4.91 ile derecelendirdi.
REST API Developers İşe Alın

REST APIs are the interface between clients and servers that allows for data to be shared across platforms, providing a seamless connection between applications, databases, and other resources. A REST API Developer is the programmer who helps clients connect their applications to a certain platform and ensure data is flowing between the two in an efficient, secure manner. This can help to reduce friction, improve performance & scalability, boost security, streamline website navigation, and more.

REST API Developers build and maintain custom programming to enable automated data retrieval and communication with a client’s desired application or platform. This can encompass services such as quickly integrating third-party payment systems into an existing website, minimizing manual work and improving customer experience. They may also incorporate priority systems; for example creating different APIs for handling bulk vs single requests for heavy workloads. Ultimately a REST API Developer helps clients bridge the gap between complex platforms and transform data into valuable business insights.

Here’s some projects that our expert REST API Developers made real:

  • Establishing communication between different applications
  • Creating priority systems for managing large volumes of requests
  • Integrating third-party payment systems into an existing website
  • Developing programming to seamlessly retrieve dynamic data
  • Designing secure connections to protect confidential information

Our highly-skilled REST API Developers are experts when it comes to stitching together the critical links which connect disparate platforms together. With years of experience they have been able to tackle innumerable projects which have led to successful outcomes for our clients. If you have an issue related to connecting your application with another platform or require automated data retrieval services then you can post your own project here on Freelancer.com and hire one of our experienced developers today!

Müşterilerimiz, REST API Developers freelancerlarımızı 49,916 değerlendirme içinden 5 üzerinden 4.91 ile derecelendirdi.
REST API Developers İşe Alın

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    I have a live React.js application that needs a refresh on both looks and behavior. I will hand over all existing code, REST APIs, and design references; what I need is a developer who can quickly plug in and push the project forward. First, the interface needs attention. Several screens require a new layout structure and an updated color palette that aligns with our latest brand guidelines. I’ll supply Figma frames so you can translate them into clean, responsive JSX and CSS (or styled-components if you prefer). Alongside the visual lift, some functional pieces must evolve. A couple of small-to-medium features are still on the backlog, and a few of our current components need polishing to make them more robust. All calls to the backend are already exposed—your task is to wir...

    €62 Average bid
    €62 Ortalama Teklif
    15 teklifler

    Your bid MUST include answers to the 5 questions at the bottom of this posting or it will be immediately rejected. We're a UK-based eSIM and mobile network company launching a branded international calling service. We need an experienced developer to fork, rebrand, and customise the WebTrit Phone open-source softphone app and get it published to both app stores. IMPORTANT: Read this entire posting carefully. There are specific questions at the bottom you MUST answer. Generic proposals will be rejected immediately. What is WebTrit? WebTrit Phone is a Flutter/Dart softphone app that uses WebRTC for voice and video calling. It connects to SIP-based VoIP systems via a REST API. The full source code is available on GitHub. What We Need Done Phase 1 — Fork & Rebrand Fork the Web...

    €450 Average bid
    €450 Ortalama Teklif
    59 teklifler

    Ya tengo el diseño inicial de la interfaz construido con V0 de Vercel en Next .js. Ahora necesito que lo conviertas en una aplicación funcional que: • Reciba y almacene datos de usuario junto con los documentos que ellos mismos suban. El usuario deberá aceptar "términos y condiciones" ya que está subiendo información confidencial • Guarde todo en una base SQL; me da igual MySQL o PostgreSQL mientras quede bien estructurado y con migraciones incluidas. • Exponga un API REST para altas, bajas, cambios y consultas, de forma que mi equipo pueda consumirla sin fricción. • Ofrezca un pequeño panel interno (puede ser dentro del mismo Next .js) para visualizar y filtrar la información almacenada. ...

    €399 Average bid
    €399 Ortalama Teklif
    81 teklifler

    I need a production-ready Flutter Android application backed by Firebase (Firestore + Auth) that functions as a compact CRM for tracking enquiries and disciplined follow-ups. Core features: • Enquiry form with dependent dropdown logic (e.g., category → model) • Conditional fields (exchange toggle reveals model & value) • Expected purchase date and next follow-up date logic • Status workflow: Interested, Follow-up Needed, Purchased, Competition, Not Interested • Next follow-up date mandatory for Interested and Follow-up Needed • Priority tag (Hot/Casual) • Auto timestamp, source, and owner tracking All enquiries stored in Cloud Firestore. Follow-up dashboard must support filters: • Today • Overdue • Upcoming • Custom date range...

    €175 Average bid
    €175 Ortalama Teklif
    15 teklifler

    I have apk files and panel files and example app. I need the new app edited wkth the old apps pictures and logos and then panel files uploaded to hosting stite and app tested. Ibo iptv and panel

    €19 Average bid
    €19 Ortalama Teklif
    21 teklifler

    I need a clean, well-structured Python module that connects directly to the Home Assistant API, handles authentication, and exposes simple functions for reading and updating entity states, firing events, and subscribing to real-time changes. Everything should be wrapped in reusable classes (ideally async-friendly) so I can drop the code into an existing project without major refactoring. While Home Assistant is the immediate focus, I also keep Google API and Gorq API integrations on the roadmap, so designing the code in a way that lets me add further REST endpoints later would be a bonus. Deliverables • Fully commented Python code (Python 3.10+) that authenticates and performs the core CRUD operations against the Home Assistant API. • A short demo script (CLI or Jupyter not...

    €80 Average bid
    €80 Ortalama Teklif
    18 teklifler

    We are looking for an experienced Laravel Programmer to integrate a secure and reliable Payment Gateway into our Laravel-based CMS. Responsibilities: Integrate payment gateways into Laravel CMS Create a new database table for the Payment Gateway system Ensure secure transaction processing API integration and testing Troubleshoot and optimize payment workflow Maintain documentation and code quality ✅ Requirements: Strong experience with Laravel Framework Experience with Payment Gateway Integration Good understanding of REST APIs Knowledge of security best practices Experience working with CMS systems is a plus

    €19 Average bid
    €19 Ortalama Teklif
    28 teklifler

    I have a existing Python based Algo trading strategy, connected with Angel one’s smart API, receiving data from Angel one’s Websocket API, program successfully running on AWS windows (OS), I will provide compete zip file of this program. I want to integrate this same Python based Algo trading strategy with 5 more brokers – Groww, Zerodha, Dhan, Upstox and Shoonya, all strategy logic and conditions will remain same, you take only all strategy logic and conditions from this zip file, I don't want to use Angel one's anything except strategy logic and conditions, create all complete new required files according to brokers, connect with mentioned broker’s websocket API for market data and trade execution just like Angel one, and create complete ready to run zip...

    €48 Average bid
    €48 Ortalama Teklif
    9 teklifler

    I’m rolling out a Python-based platform that keeps an eye on city roads in real time. The first goal is clear: monitor live video from roadside traffic cameras, spot congestion, accidents or blockages within seconds, and push actionable alerts through a cloud-hosted pipeline. Later phases will weave in IoT sensors, GPS data and public-transport schedules, but for now cameras take centre stage and all processing happens in the cloud. Here’s what I need from you: • A complete stream-to-insight workflow: camera feed ingestion → cloud message bus → analytics micro-service. • Computer-vision models (OpenCV, YOLO, TensorFlow—your call) that flag incidents with >90 % precision/recall on my test clips. • A REST API that surfaces live traffic stat...

    €33537 Average bid
    €33537 Ortalama Teklif
    11 teklifler

    I’m building a mobile-only app that needs a real-time text chat backend dedicated to one-on-one conversations. The goal is a lightweight, low-latency server that can authenticate users, deliver messages instantly, store chat history, and scale as the user base grows—all without the overhead of group or public room logic. I’m open to proven stacks such as Node.js with WebSocket/, Go with gRPC, or an equivalent solution that plays nicely with iOS and Android clients. End-to-end encryption, push-notification hooks (FCM / APNs), and a RESTful or GraphQL API for ancillary data are highly desirable. Deliverables • Production-ready server code with clear setup instructions • Secure user authentication and encrypted message transport • Message persistence (Mo...

    €12 / hr Average bid
    €12 / hr Ortalama Teklif
    27 teklifler

    STATEMENT OF WORK (SOW) For Development of CISSP Educational Application This Statement of Work (“SOW”) is entered into on [Date], by and between: Client: __________________________ Address: ________________________ AND Service Provider (Freelancer): __________________________ Address: ________________________ Together referred to as the “Parties”. 1. Purpose The purpose of this SOW is to define the scope, deliverables, milestones, and responsibilities for the development of a CISSP Exam Preparation Educational Application, similar in functionality to Sybex and LearnZapp, deployable on Web, Android, and iOS platforms. 2. Scope of Work 2.1 Learner Application The Service Provider shall develop a learner-facing application with the following features: ...

    €117 Average bid
    €117 Ortalama Teklif
    7 teklifler

    Project Title IP Microphone Control System with Professional Broadcast UX (Prototype) Project Description We are looking for an experienced full-stack developer to build a technical prototype of an IP microphone control system with a professional broadcast-style user interface, inspired by tools such as RME TotalMix or high-end broadcast control panels. This is not a simple web app. It is a real-time control interface designed for professional audio and broadcast environments. Scope of Work Core objectives: Develop a software control interface for IP microphones Control parameters such as: Gain Mute / On-Off Status monitoring Interface must be: Clean Intuitive Optimised for professional operators System overview: IP microphones with: Separate IP control interface Audio...

    €1102 Average bid
    €1102 Ortalama Teklif
    105 teklifler

    I already have two complete app concepts: every screen, interaction and asset is designed, documented and ready to hand over. What I need now is the engineering muscle to turn those polished Figma files into production-ready Flutter applications that run smoothly on both iOS and Android. Both apps share a common backend. The REST endpoints, data models and authentication flow are all mapped out, so your focus will be wiring the UI to those services, managing state cleanly and ensuring offline resilience where needed. I expect pixel-perfect implementation of the provided designs, faithful reproduction of the planned user journeys and thoughtful handling of edge cases across devices. Deliverables • Full Flutter codebase for the two apps, structured for reuse of shared components &...

    €465 Average bid
    €465 Ortalama Teklif
    128 teklifler

    I’m looking for experienced engineers who can step into an active code-base built with React on the frontend and a Node.js backend, keep everything running smoothly, and leave the code healthier than you found it. Most of the work revolves around maintaining the existing platform—troubleshooting production issues, refactoring brittle components, tightening test coverage, and slipping in incremental feature requests without disrupting current users. What you’ll actually tackle day-to-day depends on your strength: • Frontend specialists will focus on React component updates, state management fixes, accessibility tweaks, and performance profiling. • Backend specialists will handle Node.js services, REST/GraphQL endpoints, database queries, and deployment script...

    €118 Average bid
    €118 Ortalama Teklif
    119 teklifler

    I need help finishing a React-based e-commerce web application within the next seven days. The design files and API documentation are ready; what’s left is turning them into a polished, functional front-end. Here’s the scope you’ll tackle during the one-week sprint: • Wire the React components to the existing REST endpoints • Implement routing and state management so pages load quickly and data stays in sync • Hook up the product listing and search views, the cart flow, checkout, and basic user sign-in/out • Apply the provided styles and ensure the layout remains responsive down to mobile screens • Hand over clean, well-commented code in a Git repo as the final deliverable I’m looking for someone comfortable with React Router, Con...

    €213 Average bid
    €213 Ortalama Teklif
    72 teklifler

    I already run a PAN-card portal and have obtained full documentation plus a live API key for the official Application API. What I now need is clean, well-tested code that plugs this API into my existing workflow so users can: • submit brand-new PAN applications • update records they have already started • pull back the latest application details in real time The API is REST/JSON and secured only by an API key, so no OAuth dance is required—just proper header handling and secure storage of the key on the server. I will provide the key, the docs, and access to a staging instance of the portal. Please wire the endpoints, map all responses to our current UI, build solid error/timeout handling, and give me a short read-me so future devs can follow the flow. Everyth...

    €51 Average bid
    €51 Ortalama Teklif
    20 teklifler

    I need a versatile full-stack developer with 2–5 years of hands-on experience who can move comfortably between back-end logic and front-end polish. On the server side you’ll work mainly in Python, building and extending services written in Django and Flask, so solid understanding of ORM, RESTful patterns, middleware and deployment on Linux-based environments is critical. The front-end layer is flexible. If you are productive with React, Angular, Vue or a comparable framework and can translate product ideas into clean, responsive interfaces, that works for me—what matters is the quality of the user experience you deliver. Creativity, readable code and proactive communication are essential. I tend to sketch concepts loosely and rely on you to flesh them out, suggest impro...

    €3119 Average bid
    €3119 Ortalama Teklif
    24 teklifler

    I want to streamline two pillars of my customer journey through the WhatsApp Business API: end-to-end order management and secure phone verification. On the order side, the flow should cover placement, tracking, and final confirmation without requiring any manual intervention from my team. Customers need to see real-time updates, and the system must write each step back to my existing database (REST endpoint available; documentation ready). For phone verification, the system should automatically send a code, listen for the reply, validate it, and return the result to my app. No human action should be necessary once the user responds. Acceptance criteria • Single WhatsApp number handles both processes concurrently without collisions • Clear, commented code (Python, Node, or...

    €431 Average bid
    €431 Ortalama Teklif
    159 teklifler

    I need a full-stack developer to build a website in Node.js that cleanly presents three core areas—business listings, a blog section, and a product showcase—supported by a secure admin panel. The admin area must let me create, update, and archive content for each of those modules using a straightforward email-and-password login flow. Visual direction is modern and minimalist: lots of white space, clear typography, subtle accents, and a layout that feels snappy on both desktop and mobile. I’m happy for you to pick the most suitable Node.js framework (Express, Nest, Next, etc.) and database, as long as the code is modular and easy for another developer to pick up later on. Key deliverables: • Responsive public site with the three content sections wired to dynam...

    €259 Average bid
    €259 Ortalama Teklif
    102 teklifler

    I already have a working integration file from my gaming website and now want a Telegram bot wrapped around it. The core of the job is to turn that file into a smooth chat-based experience where a user can: • open a brand-new account • log in and retrieve their session • make a deposit through the existing payment flow • call up balance, game stats or any other info the site normally shows All endpoints and parameters are defined; you just need to plug them into a Telegram Bot API build, handle the usual checks (input validation, error messages, session tokens) and push back responses in a clean, user-friendly format. I will hand over: – the full integration script with endpoint references – test credentials and a staging bot token – a s...

    €117 Average bid
    €117 Ortalama Teklif
    79 teklifler

    I need a full-featured Windows desktop application that lets me trade on Delta Exchange without relying on the browser. The app must pull live market feeds through Delta’s REST and WebSocket APIs, show price charts and order-book depth in real time, and give me a clean workflow to place, modify, and cancel orders while tracking every open or filled position. Besides the trading views, I also want a section where I can review balances, funding history, and basic account details so I never have to leave the program to manage my profile. Acceptance criteria • Real-time data stream remains synced with the exchange at all times (sub-second latency). • Order actions confirm instantly and display status updates until filled or canceled. • Account information refre...

    €245 Average bid
    €245 Ortalama Teklif
    14 teklifler

    We are seeking a high-caliber, hands-on Engineer to lead the development of production-grade automation within the Windows ecosystem. This is a pure implementation role designed for a specialist who excels at translating complex functional logic into stable, scalable, and maintainable PowerShell scripts. You will be responsible for the "last mile" of development—ensuring that automation isn't just functional, but resilient enough for diverse enterprise environments. Key Responsibilities Production-Grade Development: Build and maintain robust PowerShell automation with a heavy emphasis on advanced error handling, structured logging, and modular execution flow. Windows Systems Integration: Deep-dive into Windows internals to manage and manipulate the Registry, File Sy...

    €10 / hr Average bid
    €10 / hr Ortalama Teklif
    14 teklifler
    REST API JMeter Script
    4 gün left
    Onaylı

    I want to work with a Jmeter expert freelancer remotely for few hours this weekend. Im beginer to intermediate level with jmeter. I need a reusable JMX file that will let me stress-test our REST API. The flow is straightforward: first, the script must obtain an OAuth 2.0 access token and keep it available for every subsequent sampler; next, it should hit the file-upload endpoint and push a sample CSV using multipart/form-data. Please capture all correlation values (token, upload IDs, etc.) with regular expressions or JSON extractors so the run can scale with multiple virtual users. The test plan has to be cleanly organised with clear naming, user-defined variables for host, credentials, and file path, and a separate thread group ready for ramp-up tuning. Deliverables • A JMX f...

    €22 Average bid
    €22 Ortalama Teklif
    25 teklifler

    I need a production-ready SaaS platform that lets different client accounts spin up their own AI voice agents in Malayalam, English and Hindi. The agents will answer inbound calls and place outbound ones for customer support first, but they must also be able to capture leads, run outreach campaigns and close basic sales when flows allow. Voice connectivity must be plug-and-play with TeleCMI, Twilio, Exotel or any comparable cloud telephony number. I expect full IVR support, dynamic call routing, call recording and the ability to fall back to a live agent when confidence drops. Key components and expectations • Multi-tenant architecture with role-based access so each tenant only sees its own data. • NLU, ASR and TTS tuned for the three target languages; switching between the...

    €653 Average bid
    €653 Ortalama Teklif
    26 teklifler

    I need a solid backend that lets several independent restaurants run from the same cloud platform while keeping a local MySQL database at each venue. The stack is already set: Node.js on the server side, Angular for the web console, and standard SQL. Core features I must see working: order management that mirrors every ticket and status update in real time, a secure user-authentication layer (roles for cashiers, kitchen, managers, etc.), and inventory tracking that updates stock counts the moment an item is sold or a delivery is recorded. Each restaurant keeps operating even if its connection blips, so a lightweight web service will sit on the local machine, watch the MySQL tables, and push changes to the cloud API the instant they happen; the cloud then replies with any new data to ...

    €1862 Average bid
    €1862 Ortalama Teklif
    323 teklifler

    I already run a fully-functional courier management system built in PHP (CodeIgniter). One of my shippers sells through Shopify and wants to replace Shiprocket with our own service, so I need the Shopify side put in place. The job centres on creating and configuring the app in the Shopify Partner Dashboard, securing the required API keys, and wiring selected features to my existing endpoints. Those endpoints—rate calculation, real-time order tracking and automated label printing—are live and documented; you will only be integrating these three, not the entire API suite. What I expect from you • Register the app (public or custom, whichever best suits a single-store use). • Set up redirect URLs, scopes, embedded SDK and mandatory webhooks so it passes Shopify&rsq...

    €71 Average bid
    €71 Ortalama Teklif
    37 teklifler

    I need a complete Python application that runs on a Raspberry Pi 5 and identifies plant-leaf diseases in real time from the Pi camera. The same core model must also accept still-image uploads. All three disease categories—Fungal, Bacterial and Viral—have to be recognised with reliable accuracy. The user interface will be a Django web app. Within that app I want three role levels—Admin, Standard user and Guest—each with appropriate permissions for running detections, reviewing results and managing data. Please structure the code so that REST endpoints are cleanly separated; this will let me expose the following Android-ready APIs later on: live-video analysis, image-file analysis and retrieval of disease-history logs. Deliverables • Python inference engine (...

    €82 Average bid
    €82 Ortalama Teklif
    19 teklifler

    We are looking for an experienced React Native developer to build a working demo application using LiveKit for real-time audio/video communication, integrated with and a Node.js backend. Responsibilities Develop a React Native demo app using LiveKit SDK Implement real-time audio/video rooms Integrate for signaling, room events, and user presence Build a Node.js backend to: Generate LiveKit access tokens Manage socket connections Handle room join/leave events Ensure clean project structure with proper folder organization Deliver a fully runnable demo with setup instructions Experience with Understanding of real-time communication concepts (WebRTC basics) Ability to write clean, well-structured, and documented code Deliverables React Native frontend (LiveKit integrated) Node.js backen...

    €13 Average bid
    Özellikli
    €13 Ortalama Teklif
    22 teklifler
    .NET MAUI App
    4 gün left
    Onaylı

    I need a lightweight .NET MAUI mobile application that targets Android and contains only three screens: • Login – users choose Face ID/biometrics, an NFC badge tap, or a numeric PIN to sign in. • WebView – after authentication the app simply embeds a URL that I will provide at build time. • Admin – a management screen (hidden behind its own sign-in) where I can add or edit users, assign permissions, and tweak basic app settings. All data, including user credentials, roles and configuration, must live in a MySQL database accessed through a secure REST API that you will craft and integrate. Please separate API, data-access and front-end layers cleanly and keep the code in MVVM pattern. C#, .NET 8, Entity Framework (or Dapper), Visual Studio and standard...

    €66 Average bid
    €66 Ortalama Teklif
    60 teklifler

    I’m building a full-scale e-commerce solution and I want every piece—web store and mobile apps—running on a clean microservice architecture. The core idea is to separate catalog, cart/checkout, payments, user management, and notification services so they can scale independently and be deployed through containers without downtime. For the customer-facing side, I need: • A responsive web application that feels fast on desktop and mobile browsers, complete with product search, detailed pages, real-time inventory, shopping cart, secure checkout, and an admin dashboard for product and order management. • Native (or high-performance cross-platform) iOS and Android apps. Both apps must include secure user authentication and push notifications for order updates, prom...

    €199 Average bid
    €199 Ortalama Teklif
    42 teklifler

    I need a hands-on full-stack developer who can own both the C#/ASP.NET Core back-end and a React front-end. The immediate focus is to build, test, and maintain a scalable web application that cleanly separates concerns yet feels seamless to the end user. On the server side you’ll architect RESTful endpoints with ASP.NET Core Web API, wire them to MS SQL Server, and keep performance in check through efficient queries and thoughtful caching. On the client side you’ll create reusable React components, manage state responsibly, and make sure the UI stays snappy across modern browsers. I expect clean, well-documented code, meaningful unit tests, and proactive communication when a requirement needs clarification. Collaboration is part of the daily routine: you will coordinate with ...

    €72 Average bid
    €72 Ortalama Teklif
    18 teklifler

    The goal is to deliver a complete, production-ready IoT platform that automates a home’s lighting and HVAC while responding flawlessly to Google Home voice commands. Core build • Firmware or edge-side code that speaks to smart switches, dimmers, thermostats and temperature sensors, ideally over MQTT or another low-latency protocol. • Secure cloud back-end (Node.js, Python, or comparable stack) with REST and WebSocket endpoints so the mobile or web dashboard stays in sync in real time. • Database layer for device states, schedules and user profiles; relational or NoSQL is fine as long as latency stays low. • Google Home Action integration, including OAuth flow and fulfilment webhook, so “Hey Google, set living-room lights to 30 %” or “t...

    €441 Average bid
    €441 Ortalama Teklif
    143 teklifler

    We are looking for a senior full-stack engineer to take ownership of several live products and Smart TV applications. This is a long-term, part-time role focused on maintenance, improvements, and occasional new features. Our Platforms � � � � Apps Samsung TV (Tizen) LG TV (webOS) Android TV Responsibilities Maintain and improve existing websites and admin dashboards Maintain backend services and APIs Bug fixing, performance improvements, and refactoring Maintain and update Samsung & LG TV applications Assist with app store submissions and updates Communicate clearly about progress and risks Tech Stack Frontend: JavaScript, React / Backend: Node.js, REST APIs Databases: SQL / NoSQL Smart TV: Samsung Tizen, LG webOS Android TV (strong plus) Streaming / IPTV experience is a big plus Requ...

    €18 / hr Average bid
    €18 / hr Ortalama Teklif
    192 teklifler
    Python Algo Trading app
    3 gün left
    Onaylı

    I’m building a Python-based algorithmic trading system and want a clean, extensible codebase that digests both real-time and historical market data out of the box. The goal at this stage is to lay down the “engine room”: data ingestion, strategy hooks, execution routing and basic risk controls, all written in idiomatic Python with clear documentation so additional strategies and brokers can be plugged in later without refactoring. While the specific asset classes and strategy styles can stay flexible for now, the architecture needs to accommodate multiple instruments and timeframes, letting me toggle between back-testing on stored data and live or paper trading on streaming feeds with a single config change. Deliverables: • A modular Python project (virtual-env r...

    €52 Average bid
    €52 Ortalama Teklif
    9 teklifler

    Job Title: Workday Extend (Support Role) Duration: 2 Hours per day Budget: ₹26,000 monthly Role Overview We are looking for an experienced Workday Extend Consultant to provide short-term, session-based technical support. The consultant will work on building, enhancing, and troubleshooting custom applications developed on the Workday Extend platform. Key Responsibilities Develop and support custom applications using Workday Extend Configure business logic, data models, and security frameworks Troubleshoot Extend applications and resolve functional/technical issues Support integrations and REST-based services where applicable Provide live, screen-sharing based guidance and best-practice recommendations Required Skills Strong hands-on experience with Workday Extend Knowledge of Workday ob...

    €126 Average bid
    €126 Ortalama Teklif
    7 teklifler
    Excel to Node/React Web App
    3 gün left
    Onaylı

    I need my existing Excel file rebuilt as a browser-based application written entirely in Node.js on the back end and React on the front end. The spreadsheet’s rows become records in a database, and every change made to any field must be timestamped and stored so that a full history is available for each record at a glance. Four roles will sign in—IT, manager, associate, and user—through a multi-tier authentication system. Some roles must be able to view and edit data, while others will have view-only access, so robust role-based permission checks are essential. In practice this means the app must let approved staff handle data entry and modification, allow managers to carry out data approval and reporting, and give IT the tools to perform user management without leaving ...

    €16 / hr Average bid
    €16 / hr Ortalama Teklif
    219 teklifler

    • Top-up wallet and recurring subscription system that gates premium episodes and tracks balance in real-time. • Smooth audio streaming with background play; buffering and bitrate handling should feel invisible to the listener. (Offline downloads are optional for a later sprint, so build with that future toggle in mind.) Design & tech notes The UX should echo popular audio apps—clean mini-player, intuitive queue, dark/light mode if practical. I am comfortable with Kotlin or modern Java and would like well-structured, maintainable code. If you rely on a backend (Firebase, custom REST, etc.) outline the stack and provide clear API documentation so future content ingestion is straightforward. Deliverables 1. Source code and compiled APK ready for Play Store submission. 2...

    €21 Average bid
    €21 Ortalama Teklif
    7 teklifler

    Building a cross-platform mobile app that runs seamlessly on both iOS and Android. The stack is React Native, and I will hand over wireframes, brand assets, and the REST/GraphQL endpoints you’ll be calling. Your task is to translate those designs into a clean, maintainable codebase and guide the project all the way to App Store and Play Store submission. Core scope • Secure user authentication (email and social log-in, plus password reset) • Push notifications wired through Firebase/APNs, with in-app handling for deep-links and badge counts • In-app purchases that cover both consumables and subscriptions while satisfying Apple/Google review guidelines Acceptance criteria 1. A single codebase that compiles without errors for iOS (Xcode) and Android (Gradle)....

    €9 / hr Average bid
    €9 / hr Ortalama Teklif
    62 teklifler

    My equities-trading bot is already writing orders and running basic strategies, but it still needs a professional touch before it can trade live on the NASDAQ and NYSE. Code is hosted in a Git repository, built around Python with REST/WebSocket connections to the broker’s API. What remains is a mix of refinement and deployment work: polishing the execution logic, tightening risk-management rules, expanding logging/alerting, and then installing everything on a cloud instance so it restarts automatically and can be monitored in real time. I also want a quick walk-through of the finished codebase so I can maintain it confidently once it is live. Deliverables • Review and refactor the existing Python code for clarity, robustness, and speed • Complete API integration f...

    €141 Average bid
    €141 Ortalama Teklif
    90 teklifler

    Building a transparency-first supply-chain network on Hyperledger Fabric. The network must capture every inventory hand-off, trigger smart-contract events automatically, and keep supplier credentials verifiable at any moment. The work centers on: • Configuring a permissioned Fabric network (ordering service, peers, CAs). • Writing chaincode that covers inventory tracking logic, granular smart-contract rules, and supplier verification workflows. • Issuing “blockpassports” as on-chain NFTs so each batch or asset carries a tamper-proof identity that follows it through the chain. • Exposing REST or gRPC endpoints so my existing ERP can push and pull data without friction. • Packaging the setup (docker compose / Kubernetes scripts and concise READ...

    €43 / hr Average bid
    €43 / hr Ortalama Teklif
    35 teklifler

    I need a complete multivendor e-commerce platform that lets independent sellers sign up, list items, manage orders, and receive payouts while giving me full administrative control over listings, commissions, and dispute resolution. The build should be responsive, SEO-ready, and scalable so I can start small and grow without rewriting the foundation. Core expectations • Separate dashboards for admin, vendors, and customers, each with role-appropriate permissions • Flexible commission engine: flat rate, percentage, or per-category rules, editable from the back end • Modular payment gateway layer so I can switch on or off card processors, PayPal, or manual bank transfer without code changes • Modern UI/UX that adjusts smoothly from mobile to desktop, including acc...

    €537 Average bid
    €537 Ortalama Teklif
    70 teklifler
    Laravel /AI SaaS Developer
    3 gün left
    Onaylı

    I’m building a multi-tenant SaaS platform that helps organizations manage the full grant lifecycle. The codebase is already on Laravel 10, and I now need to round out the CRM layer and weave in practical AI features that remove repetitive work and surface smarter insights to users. Core ERP modules to complete • CRM • Ecommerce • Grant Management • Sales Automation • Customer Support Tracking AI functionality to embed • Predictive analytics that flags high-value or at-risk grants • An in-app chatbot that can answer workflow questions and draft common emails • Automated data entry that parses uploaded PDFs or emails and maps fields directly into the database Scope of work – Finish or refactor existing Laravel controll...

    €993 Average bid
    €993 Ortalama Teklif
    229 teklifler

    We are looking for experienced React and Node.js developers based in Pakistan to join our growing team on a full-time, long-term basis. Requirements: Strong experience with React.js (hooks, state management, API integration) Solid experience with Node.js, , and REST APIs Familiarity with databases (MySQL / PostgreSQL / MongoDB) Ability to write clean, maintainable, and well-structured code Good communication skills in English Ability to work independently and as part of a team Work Schedule: 2nd Shift: 8:00 PM to 3:00 AM (Pakistan time) Remote work Compensation: PKR 100,000 to 150,000 per month, based on experience and performance Why work with us? Long-term opportunity Professional work environment Real-world SaaS projects Stable monthly income If you meet the above requ...

    €393 Average bid
    €393 Ortalama Teklif
    56 teklifler

    Role: Full Stack Software Engineer (Frontend) Key Responsibilities • Develop, deploy, and maintain user interfaces using React (Native) and Typescript • Implement designs for web apps and embeddable widgets, ensuring responsive and modern UI • Create embeddable widgets for our internal web applications • Support Teams bot with adaptive card design • Assist with implementation and management of CI/CD pipelines for automated cloud deployments • Collaborate with our backend and agent build teams • Enable the team to work autonomously by documenting and transferring knowledge Required Skills & Experience • Strong React (Native) + Typescript skills • Demonstrated portfolio or code examples of previous work • Strong experience in Tailw...

    €5 / hr Average bid
    €5 / hr Ortalama Teklif
    32 teklifler

    Job Description We are looking for an experienced Azure Data Engineer / Data Integration Specialist to design and implement a robust, scalable data pipeline that pulls data from the Blackbaud API and loads it into an Azure SQL Database using Azure Data Factory (ADF). The goal is to have a fully automated, secure, and monitored ETL pipeline that runs on a scheduled basis and supports future scaling. Project Scope 1. Data Ingestion Connect to Blackbaud REST APIs (OAuth authentication) Handle pagination, rate limits, and API throttling Extract multiple endpoints (e.g., constituents, gifts, transactions, etc.) 2. Data Transformation Clean, normalize, and structure raw API JSON Handle nulls, schema drift, and data type conversions Add audit fields (load date, source system, batch id) 3. Data Lo...

    €108 Average bid
    €108 Ortalama Teklif
    69 teklifler

    I’m building software for an industrial-grade Internet of Things device and need a developer who can take it from concept to a reliable, field-ready application. The work centers on firmware and companion software that can collect sensor data, push it to the cloud, and expose a clean API for downstream analytics or dashboards. Core needs • Firmware or embedded code that runs stably on the target hardware (ARM-based MCU) • Edge logic for data aggregation, local caching, and basic alert rules • Secure OTA update mechanism and device provisioning flow • Cloud integration (MQTT or REST) with authentication and encryption in place • A lightweight monitoring dashboard or reference client that demonstrates data ingestion and control commands I already ha...

    €6072 Average bid
    €6072 Ortalama Teklif
    27 teklifler

    I have already got built python based trading algo that can execute index options orders on the Indian market in real time. The core requirement is seamless, low-latency integration with the zerdoha API (but order execution in angelone broker).so that the script can place, modify, and square-off positions the moment a signal is generated. Let me be very clear that only issue I have been facing is that my trading strategy is very very price sensitive (speciallly closing prices in 2 min timeframe on nifty options) and its based on closing prices of nifty options 2 min candles, so the most mandatory and NON-NEGOTIABLE PART IS THAT THE CLOSING PRICES LIVE FETCHED DATA MUST MATCH WITH BROKER CHART CLOSING PRICES AND ACCORDINGLY ENTRY SIGNAL WILL BE , this only issue needs to be resolved (not ...

    €75 Average bid
    €75 Ortalama Teklif
    12 teklifler

    I want to build a Python-based trading algorithm that can execute index options orders on the Indian market in real time. The core requirement is seamless, low-latency integration with the AngelOne API so that the script can place, modify, and square-off positions the moment a signal is generated. My signals and position sizing logic are ready; what I need from you is production-ready code that handles the full trade-life-cycle—connect, authenticate, stream prices, fire orders, confirm fills, and gracefully handle disconnections. Although back-testing and advanced risk modules may come later, this first milestone is strictly about real-time trading execution done me be very clear that I have already got few algos developed by someone buut the only issue I have been facing is that m...

    €108 Average bid
    €108 Ortalama Teklif
    14 teklifler
    Full-Stack Product Support
    2 gün left
    Onaylı

    We’re looking for a skilled full-stack developer to provide part-time, ongoing engineering support for an evolving product. The work focuses on incremental improvements rather than a one-time build, including frontend UI enhancements, admin panel updates, backend logic updates using Python, and API integrations with internal and third-party services. Experience working across both frontend and backend systems, including Python-based backends with REST/JSON APIs and relational databases (such as SQLite or PostgreSQL). On the frontend, familiarity with Svelte, TypeScript, and modern CSS frameworks like Tailwind CSS is a plus. The pay rate is open right now so please provide your proposed pay rate. As the product grows, support may scale or expand to additional resources to help acce...

    €420 Average bid
    €420 Ortalama Teklif
    180 teklifler

    We are looking for an experienced Python Full Stack Developer to join our team as a dedicated team member for a 2-month engagement. The developer will work real-time with our internal team, contributing to the design, development, and improvement of a SaaS-based MVP. This role requires strong backend expertise along with a clear understanding of system architecture and scalable application development. Required Skills & Experience: Strong experience with Python & Django Hands-on experience building REST APIs Understanding of system architecture & SaaS platforms Experience working on MVP development Project Details: Duration: 2 Months Engagement Type: Monthly contract (Dedicated team member with real-time collaboration) Budget: ₹30,000 per month Availability: Must be avail...

    €295 Average bid
    €295 Ortalama Teklif
    124 teklifler

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