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Full-Stack Developer Needed – Build Subscription-Based Web Application from Existing Prototype Project Overview I have an existing front-end prototype of a web application and a purchased custom domain. I am looking for an experienced full-stack developer to rebuild and productionize this application into a commercial-grade web app with user accounts, subscriptions, and media uploads. This is intended to become a sellable SaaS product, so clean architecture, data integrity, and predictable delivery are important. Scope of Work 1. Core Application Rebuild the existing prototype into a stable, production-ready web application Desktop-first UI (responsive, but optimized for desktop workflows) Multi-step user workflows Persistent backend storage (not browser-only) Clean structure suitable for future feature expansion 2. User Accounts & Authentication Secure user registration and login Password reset / account recovery User-specific data isolation Scalable user model (admin features may be added later) 3. Subscriptions & Payments Free tier + at least one paid tier Integration with a mainstream payment provider (e.g. Stripe) Subscription lifecycle handling (upgrade, downgrade, cancel) Feature gating based on subscription plan Architecture must support adding additional tiers later 4. Media Uploads (Images + OBS Videos) Users must be able to upload, view, download, and manage media files tied to their entries. Supported media Images: JPG / PNG / WEBP Video: MP4 only (OBS-compatible) Limits (must be enforced server-side) Images: max 5 MB each Videos: max 15 minutes duration and 500 MB file size Max attachments per entry: 10 total files (configurable) Required functionality Image thumbnail previews Basic HTML5 MP4 playback Download original file Delete / replace media Media must be private per user and entry Video-specific requirements Auto-generated single thumbnail per video (fixed capture point, no manual selection) Videos stored in object storage (S3-compatible or equivalent) Delivered directly from storage (no adaptive bitrate or multi-resolution streaming) Resumable uploads using provider-supported multipart uploads No custom pause/resume UI required Explicitly out of scope Video transcoding, compression, or re-encoding Video editing or trimming tools Adaptive bitrate streaming Custom CDN tuning beyond standard object storage delivery 5. Data & Exports Proper backend database (SQLite / MySQL / Postgres acceptable) Clean, documented data schema CSV export functionality No PDF generation required 6. Deployment & Handoff Production deployment on the purchased domain Local development setup instructions Full source code handoff (100% ownership) No proprietary platforms or vendor lock-in Technical Expectations Modern frontend framework (React, Vue, or equivalent) Backend with structured API (Node.js, Laravel, or equivalent) Secure auth and payment handling Clean, maintainable code SaaS-ready architecture (Exact stack is flexible but must be appropriate for a real product.) Milestones & Payments (Required) Proposals must include a clear milestone breakdown, deliverables, and timeline. Expected milestone structure (may be adjusted, but must be comparable): Milestone 1 – Core Architecture & Auth Data schema Auth system App shell & routing Basic user flow Milestone 2 – Core Functionality & Media Full workflow implementation CRUD operations Image & video uploads working end-to-end Media previews and permissions enforced Milestone 3 – Subscriptions & Payments Payment integration Free vs paid tier logic Feature gating Milestone 4 – Exports, Testing & Deployment CSV export Bug fixes & edge-case handling Performance pass Production deployment + documentation Budget Expectations The budget for this project is on the lower side, and proposals should reflect realistic scoping and tradeoffs. I am not looking for extreme low-ball bids that cannot deliver the described scope. I am looking for: A fair, well-justified quote Clear scope alignment Milestone-based payments tied to completed deliverables Honest communication if adjustments are needed to stay on budget Proposal Requirements (Important) To be considered, proposals must include: Recommended tech stack (frontend, backend, storage) Fixed total price Detailed milestone payment breakdown Realistic timeline (in weeks) Examples of similar SaaS or subscription-based applications Generic or copy-paste proposals will be ignored.
Projekt-ID: 40091580
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203 Freelancer bieten im Durchschnitt $1.281 USD für diesen Auftrag

Hello, I’m Muhammad Awais, a full‑stack developer ready to turn your desktop‑first prototype into a production‑ready SaaS. I will build a robust backend and clean API, with secure user accounts, Stripe-based subscriptions, and private media uploads. The architecture will be modular and scalable, designed for future tiers and features, with proper data modeling and persistent storage. I’ll implement: - Desktop‑first UI with responsive design for multi‑step workflows - Secure auth, password reset, and per‑user data isolation - Stripe integration, free tier + paid tier, upgrade/downgrade/cancel, and feature gates - Media uploads stored in a private object store (images up to 5 MB, videos up to 500 MB, 15 minutes; resumable uploads; thumbnails; per-entry access) - CSV exports and a clean data schema with documentation - Production deployment on your domain and full source handoff with local setup docs Milestones: 1) Core Architecture & Auth 2) Core Functionality & Media 3) Subscriptions & Payments 4) Exports, Testing & Deployment Fixed price: 1,250 USD. Timeline: about 60 days, with milestone payments on delivery. Do you have a preferred tech stack and storage provider, and should I architect for multi-tenant data isolation from day one? Best regards,
$1.500 USD in 18 Tagen
9,1
9,1

Hello, I can rebuild your existing prototype into a production-ready, subscription-based SaaS web application with clean architecture, secure data handling, and full source-code ownership. The focus will be stability, scalability, and realistic scope aligned with your budget. Experience SaaS platforms with Stripe subscriptions Media uploads using S3-style storage Clean MVPs designed for future expansion I’ll flag any scope risks early to stay on budget and deliver a solid commercial product. Best regards, Jasmin
$1.125 USD in 7 Tagen
9,3
9,3

**** Production-Ready SaaS Rebuild with Subscriptions & Secure Media Handling *** Hi, How are you? I propose rebuilding your existing prototype into a clean, commercial-grade SaaS with a scalable full-stack architecture and persistent backend storage. The application will include secure user accounts, subscription tiers with Stripe integration, and feature gating designed for future expansion. Users will be able to upload and manage private images and OBS-compatible MP4 videos with enforced limits, thumbnails, and S3-based storage. The system will support structured data models, CSV exports, and a maintainable codebase suitable for long-term growth. Let’s chat… Thanks
$1.125 USD in 7 Tagen
8,5
8,5

With over 10 years of experience in full-stack development, including expertise in building subscription-based web applications, I understand the importance of turning your existing prototype into a commercial-grade SaaS product with user accounts, subscriptions, and media uploads. In the fintech sector, I have successfully implemented secure user authentication, payment handling integration, and scalable user models, all of which align with your project requirements. My past projects in building subscription-based applications have consistently delivered clean architecture and predictable results, ensuring a seamless user experience. I am confident in my ability to rebuild your prototype into a stable, production-ready web app with a responsive UI, multi-step workflows, and robust backend storage. My technical proficiency in React, Node.js, and Stripe integration will enable me to meet your needs effectively. Let's collaborate to bring your vision to life. Contact me to discuss further details and kickstart this exciting project.
$1.200 USD in 20 Tagen
7,7
7,7

Hi, This is Elias from Miami. I’ve reviewed your project description, and from what I understand, the goal is to turn your front-end prototype into a production-ready SaaS web app with subscriptions, user accounts, and media uploads. With over 10 years of experience building subscription-based applications and complex media workflows, I’m confident I can deliver a clean, maintainable solution that scales. I’d love to connect to discuss how to bring this vision to life. To make sure I fully capture your requirements, I have a few questions: Q1: Do you have a preferred S3-compatible storage provider, or should I recommend one optimized for resumable uploads? Q2: Will subscription feature gating be strictly content-based, or should we plan for role/permission layers as well? Q3: Does the prototype already include all intended user workflows, or should we refine UX/UI during development? Q4: Are analytics or reporting on uploads/subscriptions part of the MVP, or out of scope? I can provide a milestone-based plan, recommended tech stack, timeline, and pricing once I understand these details. Excited to help turn this prototype into a polished, sellable product. Looking forward to your thoughts! Best regards, Elias
$1.500 USD in 7 Tagen
7,5
7,5

⭐⭐⭐⭐⭐ Build Your Subscription-Based Web App with an Expert Full-Stack Developer ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project details and see you are looking for a full-stack developer to create a subscription-based web application. You don’t need to look any further; Zohaib is here to help! My team has completed 50+ similar projects, transforming prototypes into robust web applications. I will rebuild your prototype with a focus on clean architecture and user experience, ensuring it’s ready for commercial use. ➡️ Why Me? I can easily handle your project as I have 5 years of experience in full-stack development, working with modern frameworks and secure payment systems. My expertise includes frontend and backend development, user authentication, and subscription management. Additionally, I have a strong grip on database management and media uploads, ensuring a smooth and efficient application. ➡️ Let's have a quick chat to discuss your project in detail and I can show you samples of my previous work. I look forward to connecting with you! ➡️ Skills & Experience: ✅ Full-Stack Development ✅ User Authentication ✅ Subscription Management ✅ Media Uploads ✅ React/Vue Frameworks ✅ Node.js/Laravel ✅ Database Design (MySQL/Postgres) ✅ API Integration ✅ Responsive Design ✅ Payment Processing ✅ Data Export (CSV) ✅ Clean Code Practices Waiting for your response! Best Regards, Zohaib
$900 USD in 2 Tagen
7,7
7,7

I have carefully reviewed the Subscription-Based Web App Development project. My expertise in Software Architecture, Web Development, Full Stack Development, Backend Development, and API Development makes me a perfect fit for this project. I understand the budget constraints and I am willing to adjust based on the project scope. Let's discuss further to ensure we align on budget and goals. I am confident and eager to kick off this project. Please go through my profile, which showcases 15 years of experience and a commitment to client satisfaction. Looking forward to discussing the project details and getting started right away.
$1.050 USD in 21 Tagen
7,3
7,3

Hi there, ★★★ API Development Expert ★★★ 6+ Years of Experience ★★★ I will complete this project by following a structured approach to ensure a high-quality, subscription-based web application. 1. Analyze the existing prototype and define the tech stack (approximately 10 hours) 2. Rebuild the core application, implementing the user accounts and authentication system (approximately 40 hours) 3. Develop subscription and payment functionalities, including integration with a payment provider (approximately 30 hours) 4. Implement media uploads with proper handling and storage solutions (approximately 20 hours) 5. Set up the backend database and data export functionalities (approximately 15 hours) 6. Conduct thorough testing and deploy the application (approximately 15 hours) What I need from you: 1. Access to the existing prototype and any documentation 2. Details on preferred tech stack or any specific requirements 3. Input on subscription tiers and pricing structure I look forward to connecting at your convenience to ensure the project's success. Best Regards, TechPlus Team
$1.500 USD in 17 Tagen
6,9
6,9

Hi, What specific features from the prototype are you eager to retain in the production-ready version? I can help transform your existing front-end into a robust, scalable SaaS product with user accounts and media uploads. I specialize in full-stack development, capable of implementing a clean architecture and secure payment processing, potentially with a stack using React and Node.js for smooth performance. Here’s how I envision the milestones: Milestone 1: Core Architecture & Authentication Milestone 2: Functionality & Media Management Milestone 3: Subscription Integration Milestone 4: Deployment & Documentation My budget is $1500 with a timeline of X weeks, depending on your specific requirements. I have successfully developed similar applications previously, ensuring secure and maintainable code. Let’s discuss how we can get this project off the ground! Best, Badar Madni
$1.500 USD in 34 Tagen
6,4
6,4

Hello, HAVE HANDS-ON EXPERIENCE WITH SUCH PROJECT I have 11+ years of proven experience in full-stack development and confidently understand your requirements. The goal is to transform your prototype into a scalable, user-centric SaaS web application with subscriptions, media management, and future-proof architecture. Core features -->> Production-ready desktop-first UI -->> Secure user authentication & accounts -->> Subscription tiers & Stripe integration -->> Media upload, preview, and management -->> CSV export & data integrity My approach includes clean architecture, secure APIs, efficient integration, and agile workflow. I would like to discuss some queries regarding project specifics in chat to ensure accurate scoping and milestone planning. Thanks, Julian
$750 USD in 7 Tagen
6,9
6,9

Hi sylentwolf I’m your web developer, ready to turn your project Subscription-Based Web App Development into reality! I’d love to discuss the details and create something amazing together. Feel free to message me anytime, and we can also hop on a quick video or audio call whenever it's convenient for you. I’ve developed many projects exactly like what you’re looking for. If you want to see more relevant samples, just contact me through the chatbox, and I’ll share them instantly. ★ Why Clients Trust Me 500+ successful web projects delivered 430+ positive client reviews Expert in Software Architecture, Web Development, Full Stack Development, Backend Development, API Development, Data Management, Web Application, SaaS, Frontend Frameworks WordPress, Shopify, PHP, JavaScript, HTML, CSS, Plugin/Theme Development, Laravel, WebApp Clean, modern, responsive and SEO-optimized designs Fast delivery, great communication, and long-term support Available during EST hours for smooth collaboration If you want a professional developer who delivers quality work on time and stress-free, let’s connect. I’m excited to help build something amazing for you. Best regards, Kausar Parveen
$999 USD in 10 Tagen
6,5
6,5

✅ Subscription-Based Web App Development ➡️ Ready to transform your prototype into a top-tier Subscription-Based Web App? ⏺️ With extensive experience in full-stack development, I can expertly rebuild your existing prototype into a robust, commercial-grade web application. This will include advanced features like user accounts, secure authentication, subscription management, and media uploads. I specialize in creating clean, scalable architectures which ensure data integrity and facilitate future expansions. ### Lets make your vision a reality! ➡️ Here are some of my relevant Projects: ✅ Full-Stack SaaS Application Development ✅ User Authentication and Account Management Systems ✅ Subscription and Payment Integration using Stripe ✅ Media Handling and Storage Solutions ✅ Secure Multi-Tier User Access Controls ✅ Responsive Web Design Optimized for Desktop ✅ Backend Development with Node.js and SQL Databases ✅ Deployment and Maintenance of Web Applications ✅ Performance Optimization and Security Enhancements ✅ Detailed Project Documentation and Handoff --------------------------------- Looking forward to discussing this project with you! Best Regards, Aftab Ahmad ---------------------------------
$1.250 USD in 10 Tagen
6,2
6,2

I READ YOUR REQUIREMENTS CAREFULLY AND UNDERSTOOD VERY WELL ABOUT THE PROJECT SCOPE AND START WORKING ACCORDINGLY IN STAGES. I have 10+ years of experience building commercial SaaS products with subscriptions, secure user data, and media-heavy workflows. I understand this is not a demo rebuild but a production-grade SaaS with clean architecture, ownership of source code, and room to scale. Recommended Tech Stack Frontend: React + TypeScript Backend: Node.js (NestJS) with REST API Database: PostgreSQL Auth & Payments: JWT + Stripe Subscriptions Media Storage: S3-compatible object storage (multipart uploads, private access) Deployment: Docker-based, no vendor lock-in Timeline: ~6–7 weeks total Fixed Price: USD $3,200 (milestone-based) Milestones Core Architecture & Auth (Week 1–2) – $800 Schema, auth, routing, core user flows Core App + Media Uploads (Week 3–4) – $1,200 Full workflows, image/video uploads, previews, permissions Subscriptions & Payments (Week 5) – $700 Stripe integration, tier gating, lifecycle handling Exports, QA & Deployment (Week 6–7) – $500 CSV export, testing, production deploy, handoff docs I WILL PROVIDE 2 YEAR FREE ONGOING SUPPORT AND COMPLETE SOURCE CODE. WE WILL WORK WITH AGILE METHODOLOGY AND WILL GIVE YOU ASSISTANCE FROM ZERO TO PRODUCTION DEPLOYMENT. I can share relevant SaaS examples and start immediately. I eagerly await your positive response. Thanks
$1.125 USD in 7 Tagen
6,8
6,8

Hi, I’m a full-stack developer and I’d be keen to rebuild your prototype into a reliable SaaS with solid auth, subscriptions, and secure media handling using a modern stack like React, Node.js, Postgres, Stripe and S3-compatible storage. I’ll keep the architecture clean, desktop-first, and ready to scale while enforcing file limits, private media access, and user isolation. I’ll structure delivery around your milestones with clear comms, realistic timelines, and milestone-based payments tied to working features. Happy to recommend a fair fixed price once I’ve seen the prototype and any existing assets. Regards, Tayo.
$1.200 USD in 20 Tagen
6,4
6,4

Hello! I’m reaching out from Smart Sols, a software development company with over 9 years of full-stack experience specializing in Laravel, Vue.js, React, Flutter, and UI/UX design via Figma. We understand you need a skilled full-stack developer to build a subscription-based web application based on an existing prototype. With our strong background in Laravel backend development and modern frontend frameworks, combined with a user-centric design approach, we are confident in delivering a scalable, secure, and user-friendly subscription platform tailored to your requirements. We prioritize clean, maintainable code, smooth integration of payment gateways, and responsive design to provide a seamless customer experience. We would love the opportunity to discuss your project details further and ensure timely delivery within scope. Looking forward to collaborating with you and turning your prototype into a robust subscription web app.
$1.500 USD in 30 Tagen
5,7
5,7

I can start from now and can deliver the project in approximately 8 weeks. I’ve already developed subscription based apps and I want to show you my previous work. Hello Dear, As a 10 years highly experienced full-stack developer with a strong track record of delivering high-quality, reliable, and scalable applications across web and mobile platforms. I can build a high-quality subscription-based web application from your existing prototype, ensuring it is stable, secure, and production-ready. I will handle the entire development process, including user accounts, subscription management, media uploads, and CSV exports, with clean, scalable architecture that can grow with your product. With a clear milestone breakdown and a fair timeline, I’ll deliver the project in phases, ensuring quality at every step. I will prioritize secure user authentication, smooth media management and easy subscription handling to meet your SaaS goals efficiently. Tech Stack: I will use HTML, CSS, and JavaScript for the frontend, with PHP and Laravel for the backend. MySQL will manage the database, and Firebase will handle real-time updates and notifications for a smooth, efficient experience. NOTE: This is not a auto bid I’ve carefully gone through your project details and also checked your attached project document I do have a few questions related to your project so let’s connect and discuss everything in more detail. I look forward to your response. Best Regards, Zain
$1.500 USD in 7 Tagen
5,6
5,6

Hello! I’m excited about the opportunity to turn your front-end prototype into a full-fledged, commercial-grade SaaS application. With extensive experience in building subscription-based platforms, I can ensure clean architecture, secure user accounts, and seamless media management. I suggest using React for the frontend and Node.js for the backend, along with a robust storage solution like AWS S3 for media handling. My past projects include developing scalable applications with secure payment integrations, ensuring data integrity and future feature expansion. Could you share more about your preferred payment provider for a smoother integration? Also, do you have any specific preferences for the database system? I’d love to dive deeper into your vision and discuss how we can bring this project to life efficiently and effectively. Looking forward to our conversation!
$900 USD in 15 Tagen
5,2
5,2

Hello. I propose to rebuild your existing prototype into a scalable, production-ready SaaS web application using React for the frontend and Node.js with Express for the backend, paired with a PostgreSQL database for structured, persistent storage. Media uploads will be handled via AWS S3-compatible object storage with server-side validation for file size and type, including resumable uploads for large video files. Authentication and user management will be implemented using JWT-based secure sessions, including password recovery and user-specific data isolation. Subscription and payment tiers will be integrated using Stripe, supporting free and paid plans with feature gating and scalable subscription models. The app will feature a desktop-first responsive UI with multi-step workflows, image/video previews, and CRUD operations tied to user entries. CSV export functionality will be built for data portability, and the overall architecture will prioritize maintainability, clean code, and future feature expansion. Deployment will include production hosting on your purchased domain with full documentation and handoff of all source code. Milestones will be structured around core architecture, media management, subscriptions, and final deployment, with payments tied to deliverables. Regards, Justin.
$1.125 USD in 7 Tagen
5,3
5,3

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 — Subscription-Based Web App 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
$1.250 USD in 1 Tag
4,9
4,9

Hello sylentwolf, I am Maryam Abbas, a Full Stack Developer with 4 years of experience in Backend and Frontend Development, Web Development, and API Development. I have carefully reviewed your project requirements for building a Subscription-Based Web App from an existing prototype. To achieve this, I propose to rebuild the prototype into a stable web application with a desktop-first UI, user accounts, subscriptions, and media uploads. I will ensure secure user authentication, subscription handling, and media management with specific file type and size restrictions. My approach includes using modern frontend frameworks, structured backend APIs, and scalable architecture for future enhancements. Please review my portfolio https://www.freelancer.pk/u/maryam951 for successful project deliveries. Let's discuss your project further. Looking forward to collaborating with you. Best regards, Maryam Abbas
$759 USD in 7 Tagen
4,8
4,8

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