Manish Y.

I'm a full stack developer who builds and fixes production apps where money and correctness matter: AI products, billing systems, and real-time fintech platforms, from the React frontend to the Postgres database. 9+ years with React, Node.js and TypeScript, including 3.5 years on Kotak 811 banking systems at Kotak Mahindra Bank. RECENT WORK • Local-business growth SaaS (Sweep Growth, live in India): lead developer. Connects to a shop's Google Business Profile and runs it on autopilot: AI review replies under the owner's rules, keyword-led Google posts on a schedule, a listing health score, Facebook and Instagram publishing and comment replies through the Meta Graph API, and an AI website builder that deploys to Cloudflare Pages. Also built the superadmin console (analytics, Meta Ads reporting, support inbox with an AI assistant), Hindi localisation and an Expo mobile app. NestJS, BullMQ, PostgreSQL, Redis, Next.js. • Voice AI (InsureCall): traced a silent Postgres failure that had stopped all usage billing for months. Rebuilt metering as an append-only ledger with Stripe idempotency keys and 15-minute reconciliation, shipped with zero downtime and no back-billing. • AI lead generation (Leadscraper Cortex): an LLM pipeline that turns a plain-language brief into a validated search plan, with deterministic scoring, cost-controlled model use, 7 CRM integrations, and an MCP server. • Trading (Altius): a real-time terminal combining Polymarket and Kalshi, with feed reconciliation, safe WebSocket resync, and 423 Supabase RLS policies. HOW I CAN HELP • AI features and agents: OpenAI/LLM APIs, MCP, voice AI (Vapi) • Stripe billing: usage metering, credits, webhooks • Real-time systems: WebSockets, live market data • Google Business Profile, Meta (Facebook/Instagram) and Meta Ads API integrations • Auditing live codebases for silent bugs and security gaps (Supabase RLS, multi-tenant access) • Full stack apps: React, Next.js, Node.js, NestJS, PostgreSQL, Redis STACK React, Next.js, Node.js, TypeScript, NestJS, PostgreSQL, Supabase, Firebase, Redis, Stripe, Docker If you have something live that needs to be correct, not just working, send me a message.