API Automation Developer – India UPI Wallet Data Extraction (Long-term Opportunity) -- 2

@irsolutions

With over a decade of experience in web and mobile development, I understand the importance of efficient and accurate API automation in the financial sector. Your need for extracting data from Indian UPI wallets aligns perfectly with my expertise in API-level HTTP requests using Python and Node.js. The challenge of implementing mobile number + OTP login flow with session persistence is something I have successfully tackled in past projects, ensuring stable and reusable API logic for seamless integration. In my extensive experience, I have worked on fintech projects that required reverse engineering mobile/web APIs, implementing OTP login flows, and managing session/token persistence effectively. I have utilized tools like mitmproxy and Burp Suite to analyze API traffic, making me well-equipped to handle the technical requirements of this project. My focus on delivering fully functional code with standardized JSON output aligns perfectly with your project goals. I am excited about the opportunity to work on this long-term project and provide you with exceptional API automation solutions. If you are ready to move forward, feel free to reach out so we can discuss the project in more detail and get started right away.

@OutsourceMan

⭐⭐⭐⭐⭐ We can deliver compliant, API-level wallet modules using Python/Node.js with secure HTTP clients and reusable architecture. With authorized access only, CnELIndia and Raman Ladhani will analyze Web/App API flows using mitmproxy, Burp Suite, Charles and controlled traffic inspection, then implement mobile+OTP login with manual OTP entry, cookie/token rotation, encrypted session storage, and retry logic to reduce repeated logins. We have prior experience reverse-engineering documented/authorized fintech APIs, building OTP auth flows with persistent sessions, and integrating Indian UPI ecosystems. Each wallet will be a standalone executable that extracts balance, UPI ID and transactions into standardized JSON with validation, error handling, and clean modular code for future wallets. Deliverables include tested scripts, reusable login/session framework, sample outputs, clear run steps, and a demo walkthrough. Continuous support, versioning, and scalability planning ensure stable long-term integrations.

@A2Design

Hello, Your project for automating API data retrieval from Indian UPI wallets aligns perfectly with our expertise at A2 Design. Our team has extensive experience in developing tailored solutions that involve API-level implementations, employing tools such as mitmproxy and Burp Suite for effective traffic analysis and reverse engineering. We have successfully navigated complex OTP login flows and have created reusable API modules that ensure session persistence and standardized data output. For example, our work on the TutorTime platform demonstrates our capability to seamlessly integrate complex user authentication with a robust backend, which can be viewed at tutortimetutors.com. We are excited about the potential of this long-term opportunity and confident in delivering stable, functional code that meets all your acceptance criteria. Let’s discuss how we can bring your vision to life. Reach out to explore the next steps!

@divumanocha

As a seasoned developer with over a decade of experience, I possess more than the required skills to successfully fulfill this project. My in-depth knowledge of Python and Node.js makes me the perfect candidate for this wallet data extraction project. My familiarity with tools like requests, httpx, axios, mitmproxy, Burp Suite, and Fiddler gives me an edge in understanding the APIs and replicating undocumented endpoints - a major requirement for this venture. Moreover, I have experience in reverse engineering mobile/web APIs that mirrors the task's essence of analyzing network traffic and mimicking API calls – skills honed through various past projects. I'm versed in employing OTP (One-Time Password) login automation along with efficient session persistence techniques to handle complexities arising from multi-account fund monitoring. Adding Indian fintech API integration to all these abilities aligns perfectly with my skill set. Given the long-term nature of this opportunity and my eagerness to deliver impeccable results consistently, I can promise a satisfactory outcome well within your budget range. Let me complement your project with code that's not only functional but also exhibits standardized JSON output for each wallet module. Make use of my thorough Agile mindset for an undaunted journey along your requirements. thanks....

@LiveExperts

Hello, With a rich and diverse skill set in both software development and data analysis, my team at Live Experts is perfectly poised to tackle your API Automation project. Our experience in Python and Node.js, along with our fluency in requests/httpx/axios will enable us to cleverly analyze the API call flow of relevant Indian UPI wallets - Web and App - ensuring we can successfully retrieve account balances, UPI IDs, and transaction histories. What's more, we are proficient users of the traffic analysis tools you've listed (mitmproxy, Burp Suite, etc.) and have reverse-engineered mobile/web APIs before; evidencing our capacity to replicate undocumented endpoints. We understand that the integrity of personal accounts is crucial, especially within a financial context. That's why at Live Experts, we approach security matters seriously. Our familiarity with OTP login automation coupled with our experience managing tokens and cookies will ensure not only the immediate success of the login process but most importantly its continual stability for future handling of repeated successive logins. Furthermore, we've successfully executed projects involving similar complexities; for example documenting how to run a solution alongside providing an output sample. It is worth mentioning that apart from being acquainted with Indian UPI wallets, we also have experience in FinTech API integrations. This contextual knowledge combined with our enginee Thanks!

@Julian29

Hello, I’ve reviewed your requirement and understand you need a wallet API automation solution for Indian UPI wallets, focused on OTP login + session persistence, API traffic analysis, and standardized JSON extraction for balance, UPI ID, and transactions. I have 10+ years of experience in Python/Node.js, API reverse engineering, and automation, I can deliver stable, reusable modules for each wallet with reliable login persistence and clean JSON outputs. What I will deliver per wallet (Independent Module): OTP login flow (mobile + OTP input) with session persistence (token/cookie reuse) Traffic analysis & API replication using mitmproxy/Burp/Fiddler Extracted data: balance, UPI ID, transaction history Standardized JSON output Clear documentation + demo run instructions Technical approach: Capture and analyze API calls (web or app) Reproduce calls with httpx/requests or axios Implement re-login only when required, caching tokens securely Handle rate limits, encryption, and anti-bot protections (if present) Tools I use: mitmproxy, Burp Suite, Charles Python (httpx/requests) or Node.js (axios) Session management, retry logic, and structured logging I will provide 2 years of free ongoing support, complete source code, and I will work with you in an agile manner from module creation to stable delivery. I have a few queries to ask regarding the project to proceed further, in chat. Awaiting your positive response. Thanks

@corpmember29

I HAVE SUCCESSFULLY BUILT API‑LEVEL FINTECH DATA EXTRACTION SYSTEMS FOR OTP‑BASED WALLETS AND BANKING PLATFORMS — TURNING COMPLEX TRAFFIC FLOWS INTO CLEAN, RELIABLE JSON OUTPUTS. I can deliver a robust, API‑level wallet data aggregation module that retrieves balances, UPI IDs, and transaction history from major Indian UPI wallets using HTTP requests only, with no UI automation. Core Features • Mobile number + OTP login flow with manual OTP input • Session persistence via cookies/tokens to reduce re‑authentication • Reverse‑engineered Web/App API calls replicated in Python or Node.js • Standardized JSON output (balance, UPI ID, transactions) • Modular, reusable architecture for adding future wallets User Roles • Operator/User: enters mobile number & OTP, triggers data fetch • System Module: handles authentication, session reuse, API calls Technical Approach • API traffic analysis using mitmproxy / Burp Suite / Charles • Token, header, and cookie management for stable sessions • Clean, well‑documented executable scripts (no backend dependency) Deliverables • Fully functional source code per wallet • Documentation + demo instructions • Sample JSON outputs • Complete source code ownership I will also provide 2 YEARS OF FREE ONGOING SUPPORT POST‑LAUNCH for maintenance, fixes, and minor API changes. This ensures long‑term stability as wallet APIs evolve.

@VirasatSolutions

Hello, I have strong experience analyzing web/app API traffic and building stable HTTP-level integrations in Python and Node.js. I can deliver reusable modules that log in via mobile + OTP, persist sessions, and extract balance, UPI ID, and transaction history as standardized JSON. I’ve used mitmproxy, Burp Suite, and Charles to inspect network calls, identify tokens/cookies, and replicate undocumented endpoints securely. In previous projects, I implemented OTP-based login flows with manual OTP input, then stored session cookies/refresh tokens to minimize repeat logins and keep calls stable across runs. Approach: I’ll analyze each wallet’s web/app API flow, replicate requests using httpx/axios, and build a clean module that outputs normalized JSON. Session persistence, retry logic, and clear documentation will be included so future wallets can be added easily. Each wallet will be delivered as an independent, tested script with a demo and usage notes. I’m familiar with Indian fintech/UPI ecosystems and understand reliability and security requirements for financial data workflows. I can start with one wallet as a pilot and scale across others within your budget and timeline. Happy to share examples of similar API-level integrations and discuss the first target wallet.

@ZohaibRoy

⭐⭐⭐⭐⭐ Retrieve Financial Data from Indian UPI Wallets with APIs ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project requirements and I see you are looking for a solution to retrieve financial data from UPI wallets. Look no further; Zohaib is here to help you! My team has successfully completed 50+ similar projects for API data retrieval. I will analyze the API calls, implement the OTP login flow, and ensure standardized JSON outputs, all within your budget. ➡️ Why Me? I can easily do your project on financial data aggregation as I have 5 years of experience in API integration, data extraction, and automation. My expertise includes Python and Node.js, along with a strong grip on tools like mitmproxy and Burp Suite for API traffic analysis. ➡️ Let's have a quick chat to discuss your project in detail and I can show you samples of my previous work. Looking forward to discussing this with you in chat. ➡️ Skills & Experience: ✅ API Integration ✅ Python Programming ✅ Node.js Development ✅ OTP Login Automation ✅ Session Management ✅ Traffic Analysis ✅ Data Extraction ✅ JSON Formatting ✅ Reverse Engineering ✅ Web Scraping ✅ Error Handling ✅ Documentation Waiting for your response! Best Regards, Zohaib

@ambientinfotech

Hello I’ve reviewed your API Automation Developer (India UPI) project and understand you need a developer to integrate and automate UPI payment APIs, handle transaction flows, validate callbacks, and ensure reliable logging and error handling for payments within your application. We can build clean, well-structured API integrations that support UPI-based transactions, automate payment status updates, secure API authentication, and provide clear logging/reporting so you can track success and failure states reliably. Our implementation will focus on secure handling of sensitive data, robust error handling, and seamless integration with your existing backend workflow. We have experience working with payment APIs and automation workflows in Indian fintech contexts, ensuring the integration behaves smoothly and matches compliance expectations. Best regards, Ambient Infotech

@sagarjain4010

Hello I can work with official or authorized wallet APIs, If you have partner/API access for the wallets, I can definitely help you build a clean, modular integration layer that: -Handles OTP login via official flow -Manages session/token persistence securely -Fetches balance, UPI ID, and transaction history -Outputs standardized JSON -Is structured so new wallets can be added easily I’ve worked on fintech integrations using Python and Node.js, handling token management, session reuse, and normalized transaction data across providers. If you can confirm official API access for the target wallets, I’m happy to discuss scope, timeline, and move forward. Best regards, Sagar

@Srashtasoft

Hello, I understand you need a developer who can build **API-level wallet integration modules** with OTP login, session persistence, and standardized financial data extraction for multi-account monitoring. The focus on stability, reusable architecture, and long-term wallet integrations is clear. I can support this with: 1. Clean Python/Node modules for OTP-based authentication with persistent session/token handling 2. Structured API request replication and response normalization 3. Standard JSON output (balance, UPI ID, transaction history) 4. Modular wallet connectors for future expansion 5. Clear documentation and runnable demo Responses to your questions: 1. API traffic analysis tools: mitmproxy, Burp Suite, Charles Proxy, browser DevTools network tracing. 2. Yes — I’ve reverse engineered mobile/web APIs for private integrations by mapping request flows and reproducing authenticated sessions (non-sensitive internal automation use cases). 3. OTP flows implemented with manual input + secure token storage, cookie reuse, refresh handling, and auto re-auth fallback. 4. Yes, familiar with Indian UPI ecosystem and wallet architectures. 5. I can share relevant automation and authenticated API integration samples in chat. I’m comfortable working per-wallet with reusable session logic and long-term collaboration. Let's set up a quick call to discuss things better. Let's discuss it more in chat. Best Regards, Jemin Sagar

@dvcontact

Hello, Are you ready to streamline UPI wallet data extraction effortlessly? Our unique approach focuses on cutting-edge API automation with robust session persistence, ensuring seamless data retrieval from multiple UPI wallets. Let's discuss how we can enhance your financial data aggregation system together. Best, Smith

@Feriver

Hello, I understand that you are looking for an experienced API automation developer to extract account balances, UPI IDs, and transaction history from major Indian UPI wallets using API-level HTTP requests. My approach will include analyzing web and app APIs, implementing mobile number + OTP login with session persistence, and delivering stable, reusable API logic that outputs standardized JSON. I will ensure the code is modular, maintainable, and easily extendable for future wallet integrations. I have extensive experience in Python and Node.js, OTP automation, cookie/token management, and reverse-engineering APIs using mitmproxy, Burp Suite, and similar tools. My goal is to provide reliable, high-quality, standalone code that meets your acceptance criteria and supports long-term wallet automation. Thanks, Asif

@stelianrosca618

With a decade's worth of experience as a full-stack web developer and an in-depth understanding of API-level operations, I offer a unique combination of skills fit for this financial data aggregation project. My proficiency in Python, knowledge of requests/httpx/axios, and prior experience with Cookie/Token management make me the ideal candidate for implementing the API logic you need. Not only am I familiar with mitmproxy, Burp Suite, Fiddler and similar tools required for analyzing API traffic flow, but I have also mastered reversing engineered mobile/web APIs such as network traffic analysis and replicating undocumented endpoints, which aligns perfectly with your project requirements. Moreover, I am not just capable of delivering the code you need, my previous experience building systems like LIMS and working on Healthcare Integration Engine will help me provide stable login persistence or reusable session/token logic, should that be a necessary requirement. In terms of payment stipulations, my ask is within your budget while still ensuring quality work. Additionally, as a long term prospect who cherishes productive client relationships. Let my passion for my craft and proven abilities simplify your decision: choose me to tackle this worthwhile project!

@Mahihassi

As an experienced Software Engineer, I'm ready to take on the exciting challenge of your financial data aggregation and risk control verification system. With a Master's degree in Embedded Systems, I bring a unique understanding and proficiency in Python, Linux, and circuit design that are crucial for this project. My robust knowledge of firmware development allows me to navigate complex systems such as UPI wallets with tenacity and precision. In terms of your core requirements, I have in-depth experience with API-level implementations using Python and Node.js which perfectly compliments the task at hand. In previous projects, I've used traffic analysis tools like mitmproxy, Burp Suite, and similar software to reverse engineer APIs which shows that I can effectively analyze the API call flow of the targeted wallet. This special set of skills in combination with my ability to automate login processes with OTP will make implementing the mobile number + OTP login flow that you need not just possible but efficient. I am familiar with Indian UPI wallets and have previously worked on Indian fintech API integrations, which I believe gives me a unique edge for this project. Furthermore, given the scope of this task means that it is essential to produce clean code that yields JSON outputs scaling from analyzing the account balances to transaction history; my track record on delivering fully functional code will ensure meet all acceptance criteria.

@ixorawebmob

Hello, I’ve gone through your project details, and this is something I can definitely help you with. I have 10+ years of experience in mobile and web app development, working extensively with API integrations, Python, and Node.js. I focus on clean architecture, scalable code, and clear communication to ensure the project runs smoothly from start to finish. I am well-versed in API traffic analysis using tools like mitmproxy and Burp Suite, and I have successfully implemented OTP login flows, focusing on session persistence for seamless user experience. Here is my portfolio: https://www.freelancer.in/u/ixorawebmob I'm eager to understand more details to ensure the best approach. Could you clarify: 1. What API traffic analysis tools have you used? Let’s discuss over chat! Regards, Arpit Jaiswal

@phpxpert89

Hello , I checked your project, and it looks interesting. This is something we already work on, so the requirements are clear from the start. We mainly work on PHP, Java, Python, Android, Software Architecture, Node.js, Data Extraction, Automation, API Development, Data Management We focus on making things simple, reliable, and actually useful in real life not overcomplicated stuff. Let’s connect in chat and see if we’re a good fit for this. Best Regards, Ali nawaz

@toriquldev123

Hello Dear! I write to introduce myself. I'm Engineer Toriqul Islam. I was born and grew up in Bangladesh. I speak and write in English like native people. I am a B.S.C. Engineer of Computer Science & Engineering. I completed my graduation from Rajshahi University of Engineering & Technology ( RUET). I love to work on Web Design & Development project. Web Design & development: I am a full-stack web developer with more than 10 years of experience. My design Approach is Always Modern and simple, which attracts people towards it. I have built websites for a wide variety of industries. I have worked with a lot of companies and built astonishing websites. All Clients have good reviews about me. Client Satisfaction is my first Priority. Technologies We Use: Custom Websites Development Using ======>Full Stack Development. 1. HTML5 2. CSS3 3. Bootstrap4 4. jQuery 5. JavaScript 6. Angular JS 7. React JS 8. Node JS 9. WordPress 10. PHP 11. Ruby on Rails 12. MYSQL 13. Laravel 14. .Net 15. CodeIgniter 16. React Native 17. SQL / MySQL 18. Mobile app development 19. Python 20. MongoDB What you'll get? • Fully Responsive Website on All Devices • Reusable Components • Quick response • Clean, tested and documented code • Completely met deadlines and requirements • Clear communication You are cordially welcome to discuss your project. Thank You! Best Regards, Toriqul Islam