You will get SaaS Architecture Audit — I'll Map Your MVP's Biggest Risks in 48 Hours
Top Rated
Project details
f your MVP works but feels fragile, slow, or impossible to scale — I help turn it into a production-ready SaaS product that can grow safely.
I’m a product-focused full-stack engineer who has built and scaled fintech and SaaS systems used by millions of users and handling real transaction volume daily. Most clients come to me when their MVP is live, has users or pilots, but needs better architecture, performance, and reliability before scaling further.
This project is designed for founders and teams who want a senior engineer who thinks beyond features and focuses on long-term product stability.
What you get:
• Architecture review and scaling strategy
• Refactoring fragile MVP code into maintainable systems
• SaaS features: multi-tenant systems, dashboards, billing, admin tools
• Performance optimization and cost-efficient architecture
• Clean, well-documented code ready for future team growth
I don’t just ship features — I build systems that won’t break when your product grows.
If you're building a serious SaaS or fintech product and want it done right, this is for you.
I’m a product-focused full-stack engineer who has built and scaled fintech and SaaS systems used by millions of users and handling real transaction volume daily. Most clients come to me when their MVP is live, has users or pilots, but needs better architecture, performance, and reliability before scaling further.
This project is designed for founders and teams who want a senior engineer who thinks beyond features and focuses on long-term product stability.
What you get:
• Architecture review and scaling strategy
• Refactoring fragile MVP code into maintainable systems
• SaaS features: multi-tenant systems, dashboards, billing, admin tools
• Performance optimization and cost-efficient architecture
• Clean, well-documented code ready for future team growth
I don’t just ship features — I build systems that won’t break when your product grows.
If you're building a serious SaaS or fintech product and want it done right, this is for you.
Programming Languages
JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance OptimizationWhat's included $99
These options are included with the project scope.
$99
- Delivery Time 1 day
- Number of Revisions 1
- Number of Pages 1
- Source Code
Optional add-ons
You can add these on the next page.
Architecture deep dive + written roadmap
(+ 2 Days)
+$120Frequently asked questions
3 reviews
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SH
Spencer H.
Jun 2, 2026
Fullstack Developer & Prompt Engineer Needed
TH
Talia H.
Apr 14, 2026
Expert Setup for Claude Cowork, Replit, and VS Code
Working with Soumik was genuinely one of the best freelancer experiences I've had on Upwork. He delivered a full platform, admin panel, CMS, and several other components at a speed that honestly caught me off guard without sacrificing even a bit of quality.
From day one, he came in with a clear plan, asked the right questions, and executed with zero hand-holding needed. Every milestone was hit ahead of schedule. When I had last-minute changes or additional requests, he handled them smoothly and never made it feel like an inconvenience.
The code is clean, the UI is polished, and everything just works. He communicated proactively throughout — no chasing, no guessing where things stood. That alone puts him in the top 1% of freelancers I've worked with.
If you're looking for someone who gets it done fast, gets it done right, and makes the entire process effortless Soumik is your person. I'll absolutely be coming back for future projects and wouldn't hesitate to recommend him to anyone.
From day one, he came in with a clear plan, asked the right questions, and executed with zero hand-holding needed. Every milestone was hit ahead of schedule. When I had last-minute changes or additional requests, he handled them smoothly and never made it feel like an inconvenience.
The code is clean, the UI is polished, and everything just works. He communicated proactively throughout — no chasing, no guessing where things stood. That alone puts him in the top 1% of freelancers I've worked with.
If you're looking for someone who gets it done fast, gets it done right, and makes the entire process effortless Soumik is your person. I'll absolutely be coming back for future projects and wouldn't hesitate to recommend him to anyone.
DS
Dale S.
Mar 6, 2026
Frontend Developer – Next.js 15 / Supabase (Task-Based, Ongoing)
About Soumik
AI Full-Stack Developer | SaaS & MVP Rescue | Next.js, React, Python
100%
Job Success
Siliguri, India - 6:15 am local time
Here's what I consistently deliver ↓↓
▸ AI-powered SaaS that survives production. LLM integrations, AI agents, RAG pipelines, and chatbots built on OpenAI and Claude. They work the day real users arrive, not just in the demo.
▸ SaaS and MVPs, end to end. React and Next.js on the front, Node.js and Python behind it, PostgreSQL and Supabase underneath, running on AWS, GCP and Vercel. I take a product from a zero-to-one MVP all the way to scaling for millions of users.
▸ Project rescue. Inherited a fragile, half-finished, or "the developer disappeared" codebase? I turn messy systems into something stable you can rely on. You get a clear breakdown of what's broken, what's worth keeping, and exactly what to change before I write a single line of code.
𝗛𝗼𝘄 𝗜 𝘄𝗼𝗿𝗸: no handoffs, no confusion, no managing. Just fast, senior-level full-stack execution.
𝗪𝗵𝗼 𝗜 𝘄𝗼𝗿𝗸 𝘄𝗶𝘁𝗵: founders who are done wasting time on developers who overcomplicated a simple problem, disappeared mid-build, or left behind code they don't understand or trust. Not a fit if you're comparing 10 devs on price or you need daily handholding.
Send me 2-3 sentences on what you're building, and I'll come back with a clear breakdown: tech stack, timeline, and exactly where I'd start.
Specialties: Full-Stack Development, Full-Stack Web Development, Web Development, Web Application Development, Software Development, Software Engineering, SaaS Development, MVP Development, Web App, React, Next.js, Node.js, TypeScript, JavaScript, Python, REST API, API Integration, GraphQL, PostgreSQL, Supabase, MongoDB, AWS, Google Cloud, Vercel, AI Integration, LLM, OpenAI, Claude API, AI Agent Development, RAG, Chatbot Development, Fintech, Healthtech, Legaltech, Ecommerce.
Steps for completing your project
After purchasing the project, send requirements so Soumik can start the project.
Delivery time starts when Soumik receives requirements from you.
Soumik works on your project following the steps below.
Revisions may occur after the delivery date.
Pre-call system review
I review your product, architecture or problem before the call so we can go straight into real technical decisions.
Live architecture & scaling consultation
We identify bottlenecks, scaling risks, and technical decisions needed to move forward safely.