Senior Full Stack Developer
Abdul Rafay
Senior Full Stack Developer
I build production SaaS platforms, cross-platform apps, and AI-integrated systems.
My Story
The Person Behind the Code
Engineer, builder, and continuous learner.
The Engineer
I am a Senior Full Stack Developer who architects and ships production SaaS platforms, cross-platform mobile apps, and AI-integrated systems. At Tudo Tech Lab I built TudoNum’s professional services module from the ground up — a schema-driven form engine, multi-tier RBAC, calendar-driven booking, and multi-region payment rails across three countries.
Beyond the Screen
Outside of work, I enjoy challenges that demand focus and strategic thinking. Competitive gaming plays a big role in how I recharge, sharpening decision-making, teamwork, and adaptability under pressure.
Always Learning
I treat learning as a core part of my work. I continuously refine my skills by adopting new tools, revisiting architectural decisions, and improving how systems are built and maintained.
Tech Stack
Core Technologies
The tools and frameworks I build with daily.
React & Next.js
Production SaaS apps and real-time platforms
React Native & Expo
Cross-platform iOS and Android apps
Django & DRF
REST APIs and backend architecture
TypeScript
Full-stack type-safe development
Convex & PostgreSQL
Real-time and relational databases
AI / LLM Integration
Claude SDK, OpenAI, OpenRouter
AWS & Vercel
Cloud infrastructure and CI/CD
Git & GitHub
Open-source contributions and collaboration
What I Do
Services I Offer
End-to-end development for web, mobile, and cloud.
SaaS & Web Platforms
Architecting production SaaS applications with real-time backends, multi-tenant RBAC, payment integration, and schema-driven UI systems that scale without rewriting components for every new flow.
- ▹ Full-stack SaaS architecture with React and Next.js
- ▹ Real-time backends with Convex and Django REST Framework
- ▹ Multi-region payment rails with Stripe and local gateways
- ▹ Role-based access control and organizational permissions
Mobile App Development
Building cross-platform mobile applications with React Native and Flutter that share typed backends with web counterparts, reducing API contract drift and shipping to both app stores from a single codebase.
- ▹ Cross-platform iOS and Android with React Native and Expo
- ▹ Flutter development for performance-critical apps
- ▹ Shared Convex backends between web and mobile
- ▹ Biometric auth, push notifications, and offline-first storage
AI & LLM Integration
Integrating large language models into production systems with provider abstraction, cost-aware routing, streaming responses, and the guardrails needed to ship AI features without hallucination risk.
- ▹ Multi-provider AI with Claude SDK, OpenAI, and OpenRouter
- ▹ Streaming AI responses with real-time UI updates
- ▹ Receipt scanning, content generation, and editorial AI
- ▹ Prompt engineering with security boundaries against injection
Cloud & Infrastructure
Setting up production infrastructure across AWS and Vercel with CI/CD pipelines, environment management, Docker containers, and monitoring for zero-downtime releases.
- ▹ AWS infrastructure for Django backends
- ▹ Vercel deployment for Next.js and Astro frontends
- ▹ CI/CD with GitHub Actions and automated testing
- ▹ Docker containerization and orchestration
Open to Opportunities
Let's build something together
I build production SaaS platforms, cross-platform apps, and AI-integrated systems.