Ahmed F.

If you're building a mobile product that needs a native app, a solid backend and AI features that work in production, I deliver all three as one accountable engineer. I'm a Top Rated Upwork freelancer (100% Job Success) whose apps have passed 500,000 downloads. WHAT I BUILD • Native iOS and Android apps: Swift/SwiftUI and Kotlin/Jetpack Compose, built for speed, offline use and stability at scale. • Backends and APIs: FastAPI, Node.js, PostgreSQL, Firebase/Supabase, AWS, Docker. • AI features that ship: OpenAI, Gemini and Anthropic integrations with schema-enforced output, RAG pipelines and vector search (pgvector, Pinecone), built to be tested, not just demoed. • OS-level and hardware work when the product needs it: call screening (TelecomManager, CallKit), AOSP/kiosk launchers, BLE and NFC. • Rescue work: store-compliance upgrades (Google Play API 34-36, 16 KB page alignment, Apple privacy manifests) and web-to-native migrations. WHY CLIENTS HIRE ME AGAIN 18 client reviews, nearly all five stars. One client wrote: "All work was delivered on time, with clean, well-organized code and excellent communication." HOW I WORK • I ask about your business goal before your stack, then send a written technical approach within 24 hours. • Fixed-scope milestones, weekly demos, clean documented code that you own. • Based in Pakistan (UTC+5); I schedule calls around your timezone. • MPhil candidate in Computer Science at Quaid-i-Azam University (operating systems architecture), which is why I debug at the binary level. START HERE Send me (1) what the app does, (2) what's missing or broken, and (3) your deadline. You'll get a scoped plan and a quote within 24 hours.