About
I'm a full stack developer who builds production-grade web applications from scratch not tutorial clones. My work covers the full product lifecycle: UI design, REST APIs, database architecture, authentication, payments, background jobs, AI integration, and cloud deployment. 🔧 Projects I've shipped: - DevMind AI AI-powered code review platform with real-time streaming, LangChain agents, semantic search using pgvector, GitHub webhook auto-reviews, and BullMQ background jobs. - InvoiceFlow Freelancer invoicing SaaS with Stripe one-time payments, Puppeteer PDF generation, email delivery, and a revenue dashboard. - D-Desk Real-time collaborative Kanban board with WebSockets, drag-and-drop, JWT auth, and a full REST API. 💻 Tech Stack: React, Next.js, TypeScript, Node.js, Express, PostgreSQL, MongoDB, Redis, Docker, AWS, LangChain, pgvector, BullMQ, Prisma, TailwindCSS, Stripe, Socket.io, GitHub OAuth, Golang 🌍 Open to full-time remote roles with international companies. Portfolio: portfolio-nine-murex-32.vercel.app GitHub: github.com/karansaini46
Work experience
Full Stack Engineer at oxflow studio, Jan 2026 - Present · 6 mos, - Built and shipped production full stack web applications using React, Node.js, TypeScript, and PostgreSQL - Developed REST APIs, authentication systems, and database schemas for client projects - Integrated third-party services including payment gateways, email providers, and cloud storage - Deployed applications on Vercel, Render, and AWS with CI/CD pipelines - Worked on real-time features using Socket.io and WebSockets
