I'm a builder. Give me an idea, and my instinct is to turn it into something real — designed, coded, tested, and live in users' hands.
Over 5 years I've taken that instinct across four platforms: my apps are live today on Google Play, the App Store, the Chrome Web Store, and macOS. Some I lead professionally — like a marketplace operator app used by merchants worldwide. Others I built completely alone, nights and weekends: TripSplit (travel expense tracker with a backend I designed from schema to API), Ramadan Planner (offline-first, privacy-first), Focus Time (browser extension), CleanReserve (native macOS tool). Every one of them taught me something no tutorial could.
What defines how I work:
🚀 I finish things. Shipping is a skill of its own — store reviews, rejections, native build failures at 11 PM, the last 10% that takes 50% of the effort. I've been through that cycle enough times that it doesn't scare me anymore.
🔧 I go as deep as the problem needs. React Native and TypeScript are my home, but I've debugged Hermes linking errors, written Node.js backends with Prisma and PostgreSQL, built streaming AI chat interfaces, and shipped RTL Arabic layouts that actually work. The stack serves the product — not the other way around.
📈 I'm never done learning. Currently deepening AWS and DevOps, because I want to understand my products from the user's tap all the way down to the infrastructure. I work best remote, async, and with real ownership — I've done it my whole career across international teams and time zones.
If you're building something in mobile or full-stack and want someone who treats your product like their own — let's talk.
🔗 ahsanullah.online · 📬 ahsanullahsunsbd@gmail.com
Skills
Junior Developer
Apr 2022 – Feb 2023
• Built and optimized React Native mobile app features with a focus on app performance and smooth user experience.
• Worked on server-side development with Node.js and SQL databases, including data modeling and schema design for RESTful APIs.
• Collaborated remotely with a cross-cultural team on web projects, code reviews, and codebase quality.
Full Stack / Frontend Developer
Jul 2021 – Jul 2026
• Web platform: Build and maintain Next.js (SSR/ISR) storefronts, dashboards, and marketing sites used across marketplace tenants; designed a three-layer modular architecture (React, TypeScript, RTK Query) reused across client projects, significantly reducing setup time.
• API & data layer: Design typed API layers with RTK Query — caching, invalidation, and optimistic updates — over the platform's REST APIs; built webhook-driven workflows and integrated third-party services end to end.
• Payments: Integrated Stripe subscriptions, guest checkout, flows, and a seller Manual Payout workflow; debugged production payment-gateway failures (422/403).
• Mobile apps: Lead developer on the company's published React Native apps (Tradly SuperAdmin, Lynxo, TradlySocial, Platform Prototype) on iOS and Android, plus multiple client B2C/C2C marketplace apps — features, releases, and native build pipeline.
• AI features: Built an embeddable AI Shopping Agent and AI Search — streaming chat UI, SSR-safe React hooks, and widget architecture used by third-party storefronts.
• Backend-side features: Built a TypeScript email-template generation system with structurally distinct layouts per content type, and a tenant-configurable image watermarking feature driven by admin config JSON.
• Production debugging: Fixed cross-stack issues: serverless sitemap generation timeouts on Vercel, stale service-worker caches after config saves, React effect race conditions, and WAF-related export failures.
• Auth & localization: Implemented OAuth 2.0 and social login flows, a WordPress OAuth plugin integration, and multilingual + RTL support across web and mobile.
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