Soumik A.

Senior Full-Stack + AI Engineer | Next.js, Supabase | MVPs & Rescues

Building a SaaS, AI product, MVP, or internal tool? I handle the whole thing: product, UX, frontend, backend, AI, QA, and deployment. You bring the problem. I figure out what needs to be built, build it, ship it, and own the technical side end to end. No handoffs across five different specialists. I work across the entire product, so decisions are faster and shipping is simpler. I've been building production-grade software since before AI became mainstream, and now I use AI to multiply that experience across engineering, research, automation, testing, and product development. Strong engineering fundamentals plus AI as a force multiplier is my edge. WHAT I BUILD SaaS and MVPs: idea to production, covering product thinking, UX, architecture, frontend, backend, AI, testing, deployment, and iteration. Product rescues: stuck product, messy or AI-generated codebase, developer disappeared? I audit it, find the real problems, fix what matters, and get it moving again. AI products: LLM integrations, agents, RAG, chatbots, AI search, document intelligence, and AI workflows using OpenAI, Claude, and open-source models. I care about production, not demos: reliability, cost, latency, evaluation, and failure handling. Automation: research, document processing, support, reporting, data entry, and internal operations turned into software. I USE AI. I DON'T LET IT DRIVE. I'm not a vibe coder. There's a difference between driving a car and sitting in the passenger seat while it takes you somewhere. I like to drive. AI makes me faster, but it doesn't replace engineering judgment. I understand the code, the architecture, the tradeoffs, and what happens when things break. PROOF - Built and scaled products serving 30M+ users, and worked on payment infrastructure where mistakes cost real money. - Shipped products for Verizon, Ford, and Yahoo, and worked with Paytm and FamPay (YC S19). - Built my own products, including taking a LegalTech SaaS from zero to revenue. - Top Rated on Upwork. My client reviews will tell you more about working with me than I can. WHO I WORK WITH Founders and teams building SaaS, AI products, MVPs, and internal tools, or inheriting a codebase that needs to be fixed. I'm a good fit when you need one senior engineer to own the technical side and move fast without constant supervision. I'm not the cheapest developer. I focus on ownership, speed, and building things properly. Tell me what you're building, what you have today, and what needs to get done. I'll tell you where I'd start. TECH Frontend and mobile: React, Next.js, React Native, TypeScript, JavaScript Backend and data: Node.js, Python, PostgreSQL, Supabase, MongoDB, REST, GraphQL, API integrations Cloud and DevOps: AWS, GCP, Vercel, Docker, CI/CD AI: OpenAI, Claude, open-source and self-hosted models (Qwen, DeepSeek, Ollama), RAG, agents, MCP, evaluation pipelines, guardrails Automation: n8n, workflow and browser automation, tool calling Quality: end-to-end testing, AI testing, observability, red teaming Domains: SaaS, fintech, legaltech, healthtech, ecommerce