Got a brief? Let's build.
I build production systems — not slide decks. Typical engagements: 2–8 week sprints for web, mobile, or AI. Fixed-scope or retainer. Based in IST, overlap with US business hours 4–5 hrs/day.
Full-Stack Web
Next.js 15 · NestJS 11 · PostgreSQL
End-to-end products, from DB schema to deploy. Typed all the way down.
- Next.js App Router
- NestJS / Express APIs
- Postgres + Prisma
AI Search & RAG
pgvector · LLM ranking · Embeddings
Hybrid search (semantic + lexical) with Reciprocal Rank Fusion and entity extraction.
- pgvector pipelines
- Claude / Gemini / OpenAI
- Eval & tuning
Mobile (React Native)
Expo · i18n · Native modules
Production RN apps shipping to Play Store. 43 screens and 18 releases as solo dev on Farmology.
- Expo + EAS
- i18n + voice
- Payments (Razorpay, Stripe)
Frontend Engineering
React 19 · Tailwind · Motion
Pixel-accurate UI, keyboard-grade a11y, Core Web Vitals in the green.
- Design system builds
- Framer Motion
- Shadcn UI / Radix
Cloud & DevOps
AWS · Cloudflare · GitHub Actions
CI/CD to EC2 + S3/CloudFront. DNS + CDN migrations with zero downtime.
- AWS EC2 / S3 / CF
- Cloudflare + DDoS
- PM2 + GH Actions
API Migrations
Express → NestJS · Dual-version routing
Migrated 192 REST endpoints from Express to NestJS in production. Zero downtime, dual /v1 + /v2.
- Feature-parity audits
- Contract tests
- Progressive rollout
Tell me what you're building.
I reply within 24 hrs (IST). For faster, email avikbhanja2@gmail.com or message me on WhatsApp.