Vijit S.

I'm a Full Stack Developer with nearly 10 years of experience building production SaaS platforms, web applications, and React Native mobile apps using Next.js, React, Node.js, TypeScript, and Supabase. 🏆 Top Rated Plus | 100% Job Success | $80K+ Earned on Upwork I help founders, startups, and established businesses turn ideas into production-ready software. From launching an MVP to scaling an existing application, I handle the complete development lifecycle — architecture, frontend, backend, databases, integrations, deployment, and maintenance. WHAT I BUILD 1. SAAS PLATFORMS & FULL-STACK APPLICATIONS Multi-tenant SaaS products, CRM and ERP systems, subscription platforms, admin dashboards, booking applications, and custom business software. Technologies: Next.js, React, Node.js, TypeScript, Supabase, PostgreSQL, Stripe, Firebase 2. MOBILE APP DEVELOPMENT Cross-platform iOS and Android applications using React Native, including fitness, healthcare, finance, marketplace, and business management apps. Technologies: React Native, JavaScript, TypeScript, Firebase, REST APIs 3. AI APPLICATIONS & INTEGRATIONS AI-powered SaaS products, RAG chatbots, AI agents, document processing, AI assistants, voice AI, and LLM integrations built into real production applications. Technologies: OpenAI, Claude, RAG, LLMs, Python, FastAPI, API Integration 4. BACKEND DEVELOPMENT & API INTEGRATIONS Scalable backend architecture, REST APIs, database design, authentication, payments, webhooks, third-party integrations, and background processing. Technologies: Node.js, Express, Python, Django, FastAPI, PostgreSQL, Stripe, Twilio, Xero, QuickBooks 5. MVP DEVELOPMENT & EXISTING APP RESCUE I help businesses launch new products and turn Lovable, Bolt, v0, Bubble, and AI-generated prototypes into reliable production applications. I also take over existing React, Next.js, and Node.js codebases to resolve bugs, improve performance, refactor architecture, and deliver new features. 6. MODERN WEBSITES & WEB APPLICATIONS High-performance Next.js websites, custom dashboards, responsive applications, and SEO-optimized marketing sites with excellent Core Web Vitals. SELECTED PRODUCTION PROJECTS • GroomWork - B2B SaaS for pet grooming businesses with scheduling, subscriptions, invoicing, and client management. • Simple Life - AI-powered health and weight-loss application. • Bhoomivaidyam - Healthcare and clinic management application. • Canvasant - Business software and ERP integration solutions. My portfolio includes additional production web, mobile, and SaaS applications across healthcare, finance, e-commerce, logistics, and other industries. WHY CLIENTS WORK WITH ME ✓ Top Rated Plus freelancer with 100% Job Success ✓ $80K+ earned on Upwork and 2,300+ hours logged ✓ Nearly a decade of production software development experience ✓ Full ownership — from architecture and development to deployment and maintenance ✓ Expertise in React, Next.js, Node.js, Python, React Native, Supabase, and PostgreSQL ✓ Cloud and DevOps experience with AWS, Vercel, Cloudflare, Docker, and CI/CD ✓ Clear communication, maintainable code, and reliable delivery LET'S DISCUSS YOUR PROJECT Send me an invitation or message describing what you're building. I'll respond with a personalized Loom video explaining how I'd approach your project, the technologies I'd recommend, and the steps needed to get it into production.