Ahsan

AI Full Stack Engineer

PDC

Nov 2023 - Present • 2 yrs 10 mos

I built a full-stack Web3 platform for PDC, including a Next.js frontend, token sale dashboard, smart contracts, and wallet integration supporting 150+ Web3 wallet connections. I handled token claims, Ethers.js integration, and end-to-end testing across the entire Web3 stack.

COO & AI Full Stack Engineer

NWFIT AI

May 2022 - Present • 4 yrs 4 mos

I work as COO & AI Full Stack Engineer for a subscription-based AI fitness SaaS platform with 140K+ users. I help lead product development across the mobile app, web app, backend, payments, subscriptions, analytics, AI systems, and day-to-day product operations. My work includes: • Managing Flutter development for iOS and Android • Building web apps and funnels with Next.js • Supporting backend and API systems using Express.js and MongoDB • Improving an AI workout recommendation engine built with Python and FastAPI • Managing Stripe payments, subscriptions, webhooks, and access logic • Working with RevenueCat and Superwall for mobile subscriptions and paywalls • Integrating Firebase, Meta SDK, GA4, GTM, CAPI, and Microsoft Clarity • Driving organic growth through App Store Optimization (ASO), keyword research, and mobile app marketing strategies • Running paid user acquisition on Apple Search Ads and Google App Campaigns for installs, subscriptions, and in-app purchases • Reviewing developer work, testing features, fixing bugs, and shipping production updates • Helping resolve customer, payment, and subscription access issues This role gives me hands-on experience building and scaling real SaaS, AI, and mobile products used by 140K+ users.