Khalid S.

I build production-grade Flutter apps across some of the most demanding domains in mobile — fintech, ride hailing, e-commerce, AI, and enterprise. In 7+ years I've shipped apps with real users, real transactions, and real stakes. Industries I've shipped in: — E-commerce & retail (full cart, checkout, order management) — Ride hailing (live tracking, driver/passenger flows, booking) — Fintech & payments (Stripe, PayPal, Apple Pay, Google Pay, in-app purchases, 1Link, JazzCash, EasyPaisa, MongoPay, Mastercard) — HRMS & POS systems (employee management, attendance, billing) — Repair lab & service management (job cards, invoicing, customer portal) — Travel applications (booking flows, itineraries, live APIs) — AI-integrated apps (Coach AI with real-time AI responses, personalised user flows) Payment integrations are one of my strongest areas. I've connected apps to international gateways (Stripe, PayPal, Apple Pay) and Pakistani payment rails (1Link, JazzCash, EasyPaisa, MongoPay) — handling webhooks, failure states, refunds, and compliance edge cases that most developers skip. On the AI side, I've built Flutter apps with live LLM integration — not just a chatbot wrapper, but context-aware, personalised experiences that actually retain users. What working with me looks like: → I ask the right questions before writing a single line of code → Daily updates — you always know where the project stands → I flag risks early, not at deadline → Video walkthroughs of every major milestone → Clean, documented code your next developer won't hate Whether you have a Figma file ready or just a problem to solve, I'll give you an honest scope, realistic timeline, and a working app at the end. Stack: Flutter · FlutterFlow · Dart · Firebase · Riverpod · REST/Dio · Stripe · PayPal · 1Link · JazzCash · EasyPaisa · Google Maps · FCM · SQLite · Android · iOS