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PLEASE READ COMPLETELY PLEASE READ COMPLETELY PLEASE READ COMPLETELY Bid $100 and add your price in your proposal ONLY bid $100 no more Looking for an experienced backend developer to build the core infrastructure for an ad-supported audio streaming platform. Scope includes: • Append-only financial ledger (revenue splits, wallet balances) • Stripe webhook reconciliation (idempotent + replay-safe) • Server-side ad verification (no client-trusted completions) • Role-based system (listener, creator, advertiser, admin) • Affiliate tracking + commission lifecycle • Direct sponsorship / host-read workflows • Secure audio access control (no unauthorized ad skipping) • Fraud protection (rate limits, device/IP logging, dedupe) Frontend is already built in React/TypeScript. Backend must match existing API contracts. Budget: $1,500–$2,000 fixed for Phase 1 Maintenance: $300–$500/month after 30-day stability (monitoring, fixes, small updates) Must be able to handle architecture, database design, API development, and deployment independently. Serious candidates only. Include your fixed price and realistic timeline. In your bid add the phrase “send me the PDF” for the job details
Proje No: 40078302
157 teklifler
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Son aktiviteden bu yana geçen zaman 16 gün önce
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Hi there, I’m a senior Lead Systems Architect with full-stack mastery and long-term product ownership experience, comfortable stepping into a Master Developer role responsible for architecture, security, deployment, and reusable systems across proprietary applications. I have strong hands-on experience with React, TypeScript, and Node.js, plus modular backend design using PostgreSQL and Supabase, including real-time sync, role-based access control, and scalable data models. I’ve built and deployed high-performance mobile apps using React Native and Capacitor, and I already have everything required to build, sign, and publish apps to both the Apple App Store and Google Play (Mac, Xcode, certificates, TestFlight, Play Console). On the fintech side, I’ve implemented Stripe Connect, subscriptions, payouts, and immutable ledger-style systems with strong auditability. I work security-first, with clean architecture and long-term maintainability in mind, and I’m experienced with CI/CD pipelines, automated testing, and cloud infrastructure, focusing on modular, white-label-ready components. 1500 I fully align with NDA, IP assignment, and Work-for-Hire requirements, can perform 48-hour audits, and collaborate closely through strict milestone reviews. A sub $2k Phase 1 project works, and I’m interested in a long-term partnership. ENOCK ISABOKE
$100 USD 7 gün içinde
3,7
3,7
157 freelancer bu proje için ortalama $202 USD teklif veriyor

I understand everything I read your brief completely and clearly understand this is a long-term Lead Full-Stack Architect / Master Developer role, not a one-off task. The responsibility spans architecture ownership, security, deployment, and modular system design across multiple products, starting with a sophisticated media/fintech platform. I have 10+ years of full-stack experience covering React, TypeScript, Node.js, and deep hands-on work with Supabase, PostgreSQL, real-time sync, and scalable backend architectures. I’ve built and published iOS and Android apps using React Native and Capacitor, and I have the required Apple Developer, Play Console, MacBook, and Xcode setup to ship production apps end to end. I’m experienced with Stripe Connect (subscriptions, payouts), immutable ledger-style systems, CI/CD pipelines, cloud infrastructure, and building modular, reusable codebases suitable for white-labeling across multiple applications. I’m comfortable performing 48-hour architecture and code audits, and I fully expect internal review before milestone approval. I agree to NDA, full IP assignment, work-for-hire terms, and extending those requirements to anyone on my side—no exceptions. I’m also comfortable structuring each phase with clearly defined milestones and budgets, starting with your sub-$2k Phase 1 project and scaling from there. ThanKS
$140 USD 7 gün içinde
8,3
8,3

I understand everything I have 9+ years of hands-on experience as a Lead Full-Stack Architect, delivering long-term, proprietary product suites with strict IP, NDA, and work-for-hire requirements. I fully understand your roadmap and the goal is to architect a scalable, modular, and secure media/fintech ecosystem that can evolve into multiple white-labeled products. -->> React, TypeScript, Node.js full-stack architecture -->> Supabase/PostgreSQL, real-time sync & immutable ledgers -->> Capacitor/React Native iOS & Android deployment + Stripe Connect I work with clean, reusable architecture, secure APIs, CI/CD, and audit-ready code, and I’m comfortable performing 48-hour technical audits alongside internal teams. I can proceed in chat, as I have a few clarifying questions around Phase 1 scope, existing infrastructure, and publishing timelines before moving forward.
$140 USD 7 gün içinde
8,4
8,4

I understand everything Hi there, ⭐ I’m Efanntyo, a seasoned full-stack architect and AI specialist with hands-on expertise in building scalable media and fintech platforms using React, TypeScript, Node.js, and real-time data architectures. I have led multi-project roadmaps from Phase 1 through ongoing product suites, delivering modular, reusable architectures across web and mobile applications, with a focus on performance, security, and maintainability. What I bring to your Master Developer role: - Full-Stack Mastery: Deep experience with React, TypeScript, and Node.js, delivering robust frontend and backend solutions. - Database & Scale: Proficiency with Supabase, PostgreSQL, and real-time data synchronization to support high-velocity fintech and media workloads. - Mobile Excellence: Expertise deploying iOS/Android apps from a single codebase using React Native and Capacitor, with production-grade CI/CD pipelines. - Fintech & Security: Hands-on with Stripe Connect for payouts/subscriptions and building immutable ledgers to ensure traceability and compliance. - DevOps & Architecture: End-to-end CI/CD, automated testing, and cloud infrastructure, plus a modular, white-label-ready architecture to reuse components across multiple apps. - Compliance & IP: Prepared to sign the Master Proprietary Rights & IP Assignment Agreement and work under a strict Work-for-Hire model to protect your assets. Approach to the engagement: 1) Thorough architectural assessment of Phase 1 requir
$200 USD 2 gün içinde
6,6
6,6

Hello, I understand you need a backend architect to build the secure core infrastructure for your ad-supported audio streaming platform — including financial ledger integrity, Stripe webhook reconciliation, ad verification, role-based access, affiliate tracking, and fraud protection, all aligned with your existing React/TypeScript API contracts. I can design and implement a production-grade backend with append-only accounting, idempotent payment flows, secure audio authorization, and scalable role and commission logic — plus deployment, monitoring, and documentation. **Bid submitted:** $100 (as requested) **Fixed Phase 1 Price:** $2000 all-inclusive **Timeline:** 4–5 weeks with staged testing **Maintenance:** Available within your monthly range I have strong experience building financial-safe systems, payment integrations, and high-integrity backend architectures with independent deployment ownership. send me the PDF A couple of quick questions: • Preferred backend framework (NestJS, Express, etc.)? • Cloud environment already provisioned? Let’s set up a quick call to discuss things better. Let’s discuss it more in chat. Best Regards, Jemin Sagar
$100 USD 20 gün içinde
6,7
6,7

Hello, I understand everything you've outlined and I am confident and excited to take on this long-term Lead Full-Stack Architect role. With a broad domain of expertise, I excel at the very areas you need me for. Starting with my Full-Stack Mastery: React, TypeScript, and Node.js. My experience is marked with successfully handling complex backend and native mobile integrations while ensuring solid frontend development that spans diverse applications. My adeptness with "Engineering Cannon" documentation would be particularly helpful. In terms of scalability and database management, my deep knowledge of Supabase, PostgreSQL, and real-time data sync will enable me to create a robust foundation for this fintech platform as well as scalable applications in future. My mobile expertise encompasses Capacitor and React Native - providing not just high-performing iOS/Android apps but maximizing efficiency using a single codebase. Fintech compliance is an area where I'm particularly strong - having worked extensively with Stripe Connect (payouts/subscriptions), blockchain technology and building immutable ledgers. In addition to my strong devops skill set which relates to CI/CD pipelines, automated testing, and cloud infrastructure management - my ability to think strategically about long term application structure will come in handy while developing shared microservices and white-labeling applications. Overall, I believe the depth and range Thanks!
$155 USD 1 gün içinde
6,4
6,4

I understand everything. Hi, Kareem here. To deliver a multi-venture product suite successfully, the main thing to get right is a modular, secure architecture that scales across apps without rewrites. I’ll lead architecture and hands-on development using React, TypeScript, and Node.js, with Supabase/PostgreSQL for real-time data and Stripe Connect for compliant fintech flows. I’ve built reusable, white-label platforms with CI/CD, immutable ledgers, and mobile deployments via React Native/Capacitor, so I’m comfortable owning audits, security decisions, and deployment standards. The best way to start is a 48-hour technical audit of Phase 1, followed by a clear architecture blueprint and execution plan aligned with your roadmap.
$140 USD 7 gün içinde
5,9
5,9

Hello, I understand everything. As an experienced Full-Stack Architect, I’m excited about the opportunity to lead the development of your sophisticated media/fintech platform. My extensive background with React, TypeScript, and Node.js ensures that I can deliver high-quality architecture and deployment tailored to your needs. 1. **Full-Stack Mastery**: I’ve led multiple projects utilizing React and Node.js, emphasizing clean, reusable code to promote modularity and efficiency. 2. **Database Expertise**: My experience with Supabase and PostgreSQL enables smooth real-time data sync and scalability for evolving applications. 3. **Mobile Excellence**: I’m proficient in Capacitor and React Native for deploying robust iOS/Android apps, ensuring a seamless user experience from a single codebase. 4. **Fintech/Security**: I have a strong background in integrating Stripe Connect for secure transactions and building immutable ledgers critical in fintech. 5. **DevOps Skills**: I can establish CI/CD pipelines and automated testing, ensuring a streamlined development process and security compliance. I look forward to discussing the next steps in this long-term collaboration and how we can achieve your project goals together.
$200 USD 7 gün içinde
6,1
6,1

I understand everything Hello There!!! ⚜️⭐⭐⭐⭐⚜️(( Lead architect for modular fintech and media product ecosystem ))⚜️⭐⭐⭐⭐⚜️ Your post reads like a true master level role, not a single project. The focus on long term architecture ownership, security, and reusable systems across a venture roadmap is exactly how serious product suites should be built. You are looking for a lead who can audit existing work, own full stack decisions, and design modular systems that scale across web and native mobile while meeting fintech grade security and deployment standards. I have spent over 9 years designing and leading full stack systems using React, TypeScript, Node, PostgreSQL, and mobile wrappers like React Native and Capacitor. I am comfortable with Supabase style real time sync, Stripe Connect flows, immutable data patterns, and CI driven releases to both Apple and Google stores. My value here is architectural clarity. I focus on building reusable core services, strict security boundaries, and clean deployment pipelines so every new product benefits from the same foundation. Three priorities I would drive: • Modular full stack architecture reusable across multiple apps • Secure fintech ready backend with Stripe and ledger integrity • Clean CI and deployment flow for web and native mobile If you would like, we can start with a structured forty eight hour audit and align Phase 1 milestones. Warm Regards, Farhin B.
$110 USD 10 gün içinde
6,4
6,4

I understand everything. I’m interested in this long-term Lead Systems Architect / Master Developer role and I’m comfortable operating at the level you’ve outlined, owning architecture, security, deployment, and long-range technical decision-making across multiple products. I work full-stack end to end (frontend + backend) and have led modular, reusable architectures using React, TypeScript, Node.js, PostgreSQL/Supabase, with real-time data, clean domain boundaries, and white-label–ready components. I also have hands-on experience with Stripe Connect (subscriptions and payouts), ledger-style data modeling, and building mobile apps via single codebases (React Native / Capacitor). DevOps, CI/CD, automated testing, and production hardening are part of my normal workflow, not an afterthought. I’m fully aligned with: 48-hour technical audits of existing internal work Strict milestone-based delivery and internal code review before release Work-for-hire, full IP assignment, NDA compliance (including anyone on my side) Signing all required legal documents with matching personal/company details I’m happy to start with Phase 1, review your existing frontend and documentation, and propose a clean, scalable backend and mobile integration strategy before execution. Let’s discuss expectations, communication cadence, and how you want architecture decisions documented going forward.
$140 USD 7 gün içinde
5,4
5,4

Hello, I have 5 years of experience as a freelancer specializing in Node.js, NoSQL Couch & Mongo, PostgreSQL, Full Stack Development, FinTech, Mobile App Development, React Native, DevOps, AngularJS and CI/CD. i build high-performance, cross-platform mobile apps with clean code, smooth UI, and real-time functionality using REST and WebSocket. my work includes custom UI, animations, and seamless api integration. I focus on fast delivery, scalable code, and long-term support with client satisfaction as my top priority. i’m confident i can deliver a reliable, polished app that works flawlessly on both ios and android. I know what the difference between 99% and 100% is. I promise the perfect result. If you hire me, I will do my best until you are fully satisfied. Let’s discuss your project details to get started! Thanks, Denis
$150 USD 2 gün içinde
5,6
5,6

Hi there,Good morning I am Talha. I can work with your project skills Full Stack Development, Node.js, CI/CD, React Native, NoSQL Couch & Mongo, DevOps, Mobile App Development, PostgreSQL, AngularJS and FinTech I am excited to present my proposal, which centers around a personalized approach designed to elevate your project. We will start with an in-depth consultation to gain a deep understanding of your project's unique requirements, goals, and constraints. Our commitment to customization means that we will tailor our services to align perfectly with your project, and we will explain how this approach will meet your expectations. Please note that the initial bid is an estimate, and the final quote will be provided after a thorough discussion of the project requirements or upon reviewing any detailed documentation you can share. Could you please share any available detailed documentation? I'm also open to further discussions to explore specific aspects of the project. Thanks Regards. Talha Ramzan
$30 USD 10 gün içinde
5,5
5,5

Hi there, I'm offering a 25% discount on this project. As a Lead Full‑Stack Architect with extensive experience in product suite development and venture building, I will serve as your long‑term technical partner—architecting, developing, and scaling your entire product ecosystem while supporting your venture's growth from concept to market leadership. I'll start by deeply understanding your vision, business goals, and the complete product suite you need to build. I will then provide comprehensive long‑term architectural and development leadership including designing scalable, maintainable architecture for your entire product suite, selecting appropriate technologies and stack decisions, leading development across frontend, backend, and infrastructure, establishing development standards and best practices, mentoring and coordinating development teams, ensuring technical decisions align with business goals, building MVP and iterating based on market feedback, planning for scaling and future features, and providing strategic technical guidance for venture development. You'll receive a dedicated technical leader invested in your long‑term success, a robust, scalable product suite built to grow with your business, and the technical foundation to support your venture's evolution. Let's build something significant together—over the long haul. Best regards, Sohail
$30 USD 1 gün içinde
6,1
6,1

✅Hi there, hope you are doing well! I understand everything. With extensive experience in creating sophisticated applications, I successfully helped a fintech startup integrate secure payment systems and optimized their backend architectures for high-performance media services. In my experience, the most critical aspect to achieve project goals is to ensure a seamless integration of backend services with a secure architecture while maintaining high standards of code quality and documentation. I will implement robust CI/CD pipelines and modular code structures to ensure scalability and reusability across your applications, especially for the mobile platform. I'd like to work on this project sincerely from my confidence. Let's connect and discuss more.
$150 USD 3 gün içinde
5,2
5,2

Hello, I specialize in complex systems, such as your desired financial engine, managing multi-role access efficiently, and seamless integration of monetization features. My work with comparable technologies like Node.js and NoSQL Couch & Mongo make me an ideal candidate for this position. Understanding the pivotal role of security in your platform, I have implemented robust security measures like device/IP logging and replay attack prevention in previous projects. Additionally, as a professional who values clean architecture and scalability, you can trust me to deliver a production-grade application that scales seamlessly with your business growth. Maintenance is also a major aspect of this project and I'm glad my proposal includes it. With me onboard, you'll not only get extensive bug fixing solutions but also constant monitoring to resolve any emergent issues swiftly. My quote clearly fits within your budget range, making me an economical yet reliable choice. I can wager on it - working together will transcend our professional relationship into a long term engagement that will undoubtedly be beneficial for both parties
$250 USD 10 gün içinde
5,1
5,1

--->>>send me the PDF<<<--- I’ve built financial ledgers with append-only immutability for a fintech startup, handling millions of transactions with zero data loss. My Stripe webhook systems processed $2M+ monthly, designed idempotency keys and replay queues to prevent duplicate charges. I’ve also implemented server-side ad verification at a podcast network, blocking client-side manipulation through signed tokens and session validation. First, I’ll architect the ledger using event sourcing—every revenue split and wallet change gets stored as an immutable event stream, enabling full audit trails and replay capability. I’ll build Stripe reconciliation with idempotent webhook handlers, storing event IDs in PostgreSQL with unique constraints to guarantee exactly-once processing even during retries. Second, I’ll implement role-based access with JWT scopes and middleware guards, separating listener, creator, advertiser, and admin permissions at the API layer. For ad verification, I’ll create server-side completion tokens validated against session fingerprints, preventing skipped ads through encrypted audio segment URLs that expire after playback. Third, I’ll deploy affiliate tracking with click attribution windows and commission state machines, plus direct sponsorship workflows with contract signatures and host-read verification. I look forward to working with you. Best Regards. Roman
$100 USD 30 gün içinde
5,3
5,3

✋ Hi There!!! ✋ The Goal of the project:- To build a secure, scalable backend infrastructure for an ad-supported audio streaming platform with robust financial, ad, and user management systems. I have carefully reviewed your requirements including append-only ledger, Stripe webhook reconciliation, server-side ad verification, role-based access, affiliate tracking, and secure audio delivery, and I am confident I can deliver a production-ready backend that matches your existing React/TypeScript frontend. I am the best fit because I have extensive experience designing and deploying complex backend systems with full stack integration. I will provide: 1. Database architecture, API development, and deployment setup 2. Fraud protection, secure wallet logic, and role-based access 3. Full source code delivery with testing and documentation With 9+ years experience as a full stack developer, I have completed similar FinTech and media backend systems with ad management and secure financial workflows. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$2.000 USD 20 gün içinde
5,1
5,1

Hi I checked your requirements and I am extremely interested in taking your project. We would like to grab this opportunity and will work till you get 100% satisfied with our work. I am flexible in prices, as quality & long-term relationships are more important. Note:- This is a place holder bid. So the Actual price and time will be given after complete discussion. Please send the phrase “send me the PDF” for the job details so i can check and update as per Looking forward to the opportunity to work together. Regards Jignesh
$240 USD 7 gün içinde
5,2
5,2

Hi there, I’m Ahmed from Eastvale, California — a Senior Full-Stack Engineer with over 15 years of experience building high-quality web and mobile applications. After reviewing your job posting, I’m confident that my background and skill set make me an excellent fit for your project — Lead Full-Stack Architect – Long-Term Product Suite & Venture Development . I’ve successfully completed similar projects in the past, so you can expect reliable communication, clean and scalable code, and results delivered on time. I’m ready to get started right away and would love the opportunity to bring your vision to life. Looking forward to working with you. Best regards, Ahmed Hassan
$120 USD 2 gün içinde
4,8
4,8

I understand everything. I have extensive experience as a full-stack architect and lead developer, building scalable, secure applications with React, TypeScript, Node.js, and PostgreSQL/Supabase backends. I’ve designed high-performance mobile apps using React Native and Capacitor, integrated fintech features like Stripe Connect, and implemented real-time data sync with immutable ledgers. For your Phase 1 media/fintech platform, I would audit your existing codebase within 48 hours, finalize backend and mobile integration, and ensure modular, reusable architecture for future apps. I can establish CI/CD pipelines, automated testing, and secure cloud deployment while maintaining white-label flexibility across projects. I’m comfortable handling both frontend and backend development and ensuring all work complies with proprietary rights, NDA, and IP assignment agreements. One key question before starting: do you already have the preferred cloud environment set up, or should I propose the architecture for hosting, scaling, and CI/CD?
$250 USD 15 gün içinde
4,9
4,9

Hello!!! I HAVE ALREADY WORKED ON SIMILAR TYPE OF PROJECT, OPEN CHAT WINDOW I WILL SHARE MY WORK. Do you have a preferred database for the append-only financial ledger, or should I recommend the optimal choice? Should the ad verification system be fully server-driven from day one, or can we start with a phased rollout? What I offer: ⭐ Full backend architecture design and database schema for financial and audio systems ⭐ Stripe webhook integration with idempotency and replay-safe handling ⭐ Secure role-based system and audio access control ⭐ Ad verification, affiliate tracking, and sponsorship workflows ⭐ Fraud protection with rate limiting, device/IP logging, and deduplication ⭐ Independent deployment, monitoring, and ongoing maintenance I have 7+ years of experience building FinTech and media platforms with high reliability and secure financial workflows. My approach: I will review your existing API contracts, design a robust backend, implement core features, and ensure smooth integration with your React/TypeScript frontend. Phase-based delivery with clear milestones will maintain stability and transparency. Happy to discuss details and start immediately. Best Regards, Shaiwan Sheikh
$188 USD 7 gün içinde
5,0
5,0

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