Suman Dey (imsumandey) — Senior Technical Lead & Full Stack Engineer
Senior Technical Lead at ROITech Consulting with 8+ years building enterprise SaaS, AI-integrated products with RAG pipelines and pgvector, and production DevOps on GitHub Actions self-hosted runners. Based in West Bengal, India. Open to remote.
Creator of Raktamitra Ramnagar (Roktomitra) — a free Android blood donation app connecting donors across Ramnagar, West Bengal.View all 11 production projects →
Transforming Ideas
into AI-Powered ProductsAI-Powered Products
I'm a Senior Technical Lead with 8+ years across enterprise SaaS, AI-integrated products, and production DevOps. I own the full delivery cycle — from database schema and backend APIs to frontend and CI/CD pipelines — and I lead teams that ship.
Years of Experience
Code Reviews
Live Production Projects
Full-spectrum engineering from pixel to production — crafted with precision and care.
AI & LLM Integration
RAG pipelines, vector search with pgvector and HNSW indexing, OpenAI embeddings, agentic tool calling, SSE streaming, and persistent conversation memory. Shipped in production, not just experimented with.
Full Stack Engineering
Next.js 15 with App Router, Fastify APIs, OpenAPI-first codegen pipelines, and auto-generated TypeScript types. End-to-end ownership from schema design to production.
DevOps & CI/CD
Self-hosted GitHub Actions runners, atomic deployments with automatic rollback, DB migrations as a pipeline stage, Cloudflare Tunnel HTTPS routing, and PM2 process management across four live production projects.
Technical Leadership
Led cross-functional teams of 8 developers across concurrent projects. Over 1700 code reviews. Architecture decisions made before a line of code is written — PR standards, mentoring, and structured AI-assisted workflows.
Tools I use every day to build great products
Thoughts on tech, architecture, and the craft
Let's turn your ideas into production-ready applications. I'm one message away.
