Haseeb Q.

I build iOS and Android apps with React Native and production AI features: LLM agents, AI chatbots, and generative AI. 20+ apps shipped on the App Store, Google Play, and the web, some with 100K+ downloads, for startups that went on to raise $300K+ in seed funding. Where I can help I work with founders, startups, and product teams that need one developer to own the complete product: mobile UI, front-end development, API integration, AI features, testing, and App Store submission. Instead of coordinating three contractors across frontend, backend, and AI, you work with one full-stack developer who understands the whole system. ✓ AI mobile app development: new iOS and Android apps with AI at the core ✓ Mobile app development with React Native and Expo, from first prototype to store release ✓ SaaS development: subscriptions, user accounts, usage limits, and web dashboards ✓ Native app development in Swift and Kotlin when a React Native app needs native modules ✓ Making AI-generated code production-ready: taking apps started in Replit, Cursor, or similar tools and fixing the architecture, bugs, and security issues My AI and LLM engineering experience The hard part of AI app development isn't calling an API. It's making AI features reliable, responsive, and useful for real users. ✓ Integrating OpenAI, Claude, and other LLM APIs into mobile and web apps ✓ LLM agent development: agents that use tools, call backend APIs, and complete multi-step tasks ✓ AI chatbot development, virtual assistants, and conversational interfaces ✓ Generative AI video and content creation, including Sora 2 and Veo 3 integrations ✓ Managing long-running AI jobs and recovering from failed generations ✓ Streaming AI responses and showing clear generation progress ✓ Connecting AI features to subscriptions, user accounts, and usage limits How I work I start with your product and the user flows that matter, not just the screens. You get a working build early, honest estimates, and regular progress updates. I write clean, maintainable TypeScript that another developer can pick up without a rewrite. My technology stack Mobile: React Native, Expo, TypeScript, Swift, Kotlin, iOS, Android Frontend: React Backend: Node.js, Express, Python, FastAPI, REST APIs, WebSockets AI/LLM: OpenAI, Claude, LLM agents, streaming, generative AI pipelines Data: Firebase, Supabase, PostgreSQL, MongoDB, Redis Infrastructure: AWS, Docker, CI/CD, App Store Connect, Google Play Console I take on a limited number of projects at a time so I can stay focused. If you have a mobile app or AI-powered product in mind, send me the rough idea and I'll tell you honestly whether I'm the right fit.