➡️ What I Do I help companies build software that actually scales - from zero-to-launch MVPs to production systems serving millions of users. If you're dealing with a complex product to build, a backend that's buckling under load, a payments integration, or a system that's grown messy and needs a proper architecture, that's where I come in. I take full ownership of what I work on. You won't need to hand-hold me through requirements or chase me for updates. You get production-ready engineering with clear communication from day one. ➡️ Why Work With Me 14+ years as a professional software engineer and 16+ years of freelancing (since 2008), across fintech, logistics, e-commerce, and AI systems Core engineer at [login to view URL] (Y Combinator S15), Bangladesh's largest online grocery platform - built the React web app, React Native mobile app, and distributed backend infrastructure serving millions of users from scratch Led Payments & Integrations: PSP systems, eKYC, 3D Secure flows, PCI DSS compliance, and high-availability fintech microservices Delivered enterprise-grade platform and AI-first developer tooling used by companies like Zoom, PayPal, Toyota, and Salesforce Internationally recognized: featured by AFP, Al Jazeera, and major Bangladeshi outlets for freelancing impact; awarded Best New Freelancer (BASIS SOFT EXPO, 2011) Proven technical leader in system architecture, team mentoring, and scaling engineering organizations ➡️ Tech Stack Frontend: React, React Native, TypeScript Backend: Node.js, .NET Core, F#, microservices, REST & GraphQL APIs Infrastructure: Kubernetes, distributed systems, cloud-native architecture Fintech: Payment gateways, eKYC, 3D Secure, fraud prevention, banking integrations ➡️ What I Take On I work best on projects that have real complexity - greenfield builds, system redesigns, performance overhauls, fintech integrations, or mobile/web products that need a senior hand from architecture through delivery. I'm available for both fixed-scope projects and ongoing engagements. If your project sounds like a fit, send me a message with a brief overview and let's talk.