Fatima Z.

I build production-grade web and mobile apps across healthcare, fintech, fitness, and marketplaces. React, React Native, and Node, from architecture to launch. Over five years I have shipped products that have to work in the real world, not just demo well: HIPAA compliance, secure data, payment flows, real-time features, and the infrastructure that holds up when you have thousands of users. That last part is what most builds get wrong, and it is what I am good at. I currently build healthcare products for a US software company, including a full patient platform with Stripe subscriptions, lab provider routing, scheduling integrations, role-based access, and a health dashboard, all kept HIPAA-compliant in production. What I have built: - Healthcare platforms with subscription billing, lab integrations, and secure patient data, serving thousands of users - FinTech and trading apps with real-time dashboards, compliance reporting, and large transaction volumes - Fitness and health apps with AI personalization, computer-vision tracking, and subscription billing - Marketplace, booking, and social apps shipped to the App Store and Google Play with 4.5+ star ratings I work full stack, so there is no handoff gap between frontend, backend, database, and deployment. You get one person who owns the whole build and does not disappear when it gets hard. My core stack: React, Next.js, React Native, Node.js, Express, NestJS, TypeScript, PostgreSQL, MongoDB, Supabase, Firebase, AWS, Stripe, WebRTC, Twilio. I also work in Angular, Python, and Flask when a project calls for it, and I build AI-first features using Claude and OpenAI. If you have a product that actually needs to work in production, whether it is healthcare, fintech, fitness, a marketplace, or something else entirely, send me the details and I will tell you honestly how I would build it.