Zohaib K.

Full Stack Developer React Node | Next.js Node.js | AI SaaS Developer

I'm a Full Stack Developer and AI SaaS Developer with 13+ years of software development experience — including 5+ years as the lead Full Stack Developer behind Vonza, a SaaS platform generating $75K+ MRR that competes directly with Kajabi and Teachable. I build systems that scale with your business, because I care about two things: the quality of the code and the outcome it produces. I've earned $300K+ on Upwork across 100+ jobs and 3,400+ hours of web development work with a 100% Job Success Score, and I'm a Top Rated Plus full stack developer in the top 3% on the platform. As a SaaS Developer I've shipped 20+ production SaaS platforms with live users and real revenue, and I modernized and maintain 30+ interconnected Node.js applications for PaintNite on multi-cluster Kubernetes. My work as an AI SaaS Developer is in production today, not in demos: RAG pipelines, AI chatbots, and AI agents running inside revenue-generating products. "Finally, a team that gets it" — client review on an $18K, 855-hour full stack React Node project. WHAT I BUILD AS A FULL STACK DEVELOPER AI SaaS products and AI integration — As the AI SaaS Developer teams hire when prototypes aren't enough, I ship production RAG pipelines, AI chatbots, and AI agents — applied artificial intelligence and machine learning on Node.js and Python backends inside revenue-generating platforms — using OpenAI, Claude, AWS Bedrock, Cohere embeddings, and Google Vertex AI. GovDoc.ai: a multi-tenant RAG system turning federal contracting PDFs into 50+ extracted data points with semantic search. Patrol6: AI-powered video incident analysis inside an enterprise IoT security SaaS. SaaS platforms and MVPs — As a SaaS Developer I handle end-to-end SaaS development — from database schema to Stripe billing to production monitoring. Vonza alone includes a course builder with LMS, website builder, sales funnels, e-commerce, email marketing, and CRM — architected end to end as a Full Stack Developer on multi-tenant Node.js microservices. If you need a SaaS Developer who has already made the mistakes on his own product, that is the experience Vonza bought me. React and Next.js frontends — I build Next.js dashboards, Next.js admin portals, and multi-tenant component libraries — production web application work, including AI interfaces in React: chat UIs, streaming responses, and AI-powered analytics. I led the full React 16 to Next.js 15 / React 19 / TypeScript modernization across 30+ live PaintNite applications, and I work daily with the Next.js App Router — server components, streaming SSR, and edge middleware. Under the hood that means modern JavaScript, semantic HTML5, and maintainable CSS, not framework magic. Backend and APIs — As a Node.js Backend Developer working in NestJS and Express, I design authentication, business logic, background jobs, and APIs (REST, GraphQL, tRPC) built to scale, with PostgreSQL, MongoDB, MySQL, DynamoDB, Supabase, and Redis — API integration with Stripe, PayPal, Twilio, HubSpot, SendGrid, Mapbox, and 25+ third-party services. I also take on PHP and Laravel work when a project needs integration into an existing PHP system — my team at Innovation Insight delivers both. React Native mobile — Three production apps live on the App Store and Google Play with in-app purchases, push notifications, and offline-first architecture. I own both the mobile frontend and the Node.js APIs powering it. MY STACK AS A FULL STACK DEVELOPER REACT NODE Frontend: React, Next.js, JavaScript, TypeScript, HTML5, CSS, Tailwind CSS, Redux, Zustand Backend: Node.js, NestJS, Express, Python (FastAPI) AI: OpenAI API, AWS Bedrock, RAG pipelines, LLM integration, AI agent development, AI chatbot development Databases: PostgreSQL, MongoDB, MySQL, DynamoDB, Supabase, Redis Cloud and DevOps: AWS (Lambda, S3, ECS, Cognito), Docker, Kubernetes, CI/CD Mobile: React Native HOW I WORK I respond within hours during business days. I send proactive status updates. I flag risks early instead of at the deadline — if something in your spec will cost you money down the line, I tell you before we start, not after. I run a small senior team at Innovation Insight and take ownership of the full-stack development end to end. No hand-offs, no disappearing after onboarding. Message me with your project details. Within one business day you'll get a real estimate, a suggested approach, and 2–3 relevant examples from my portfolio — whether you need a Full Stack Developer for long-term product work, an AI SaaS Developer for your next launch, or a React Node team to take over an existing Next.js or Node.js codebase.