Tarun S.

I build production web apps and mobile apps end-to-end: React/Next.js + Node/Nest + Postgres, with clean UX and fast iteration. If AI makes sense for your product, I integrate LLM features (chat, RAG, document workflows, automation) in a pragmatic way, focused on reliability, cost, and security. Web3 is optional: wallet connect, smart-contract integration, and Web3 front-ends when your app truly needs it (not as a hammer for every nail). What I can deliver quickly: Web apps: SaaS dashboards, admin portals, marketplaces, landing pages Backend: REST/GraphQL APIs, auth, database design, performance fixes Mobile: React Native builds, API-connected apps, release support AI: LLM-powered features (chat/RAG), CSV/doc automation, internal tooling Upwork proof: $300K+ earned, 100% Job Success, 106 jobs completed.