Full-Stack Developer
Nov 2025 – PresentTruBotAI USA LLC · US-Based AI SaaS Startup · Remote
Sole developer on a production SaaS platform, collaborating directly with a senior architect and founding team — owning backend, frontend, and database delivery end-to-end across a Node.js + Next.js + TypeScript + MSSQL stack.
- Delivered 95+ production-ready API endpoints covering authentication, billing, subscription lifecycle, user workflows, and admin operations using Node.js and Express.js.
- Built the Superadmin Plan Management Portal and User Subscription Dashboard in Next.js + TypeScript + Tailwind CSS — 15+ pages covering plan creation, pricing tiers, add-ons, multi-currency support, invoice pagination, and credit usage history.
- Engineered end-to-end Stripe integration — subscription creation, payments, invoices, add-ons, card lifecycle events, and full webhook automation — ensuring real-time billing accuracy.
- Designed and optimized 16 relational database tables in Azure MSSQL with proper normalization, indexing strategies, and performant join queries to support complex multi-product subscription flows.
- Implemented automated background jobs (node-cron) for renewal processing, expired plan deactivation, and billing sync — achieving zero manual intervention in billing operations.
- Improved query performance on heavy subscription and invoice retrieval operations through targeted indexing, significantly reducing response times.