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Manash Kumar

@manashkumar1

Tech Lead at HUMB Global who architected a crypto exchange’s microservices and multi-chain wallet custody.

At HUMB Global, I led development across backend services, web, an admin panel, and a Flutter app for a centralized crypto exchange. I architected microservices and multi-chain wallet custody, and engineered a matching engine with asynchronous settlement and an exactly-once money model.

I also scaled trading services across replicas and deployed them on Azure Container Apps. At HackWit Technologies, I built a Flutter trading app with real-time cryptocurrency data; for Google Summer of Code at Liquid Galaxy, I visualized rocket launches, missions, and Starlink satellites.

Experience

Work history, roles, and key accomplishments

Current

Tech Lead

Current

HUMB Global

Jan 2025 - Present (1 year 9 months)

Led backend, web, admin panel, and Flutter app development for a centralized crypto exchange, architecting microservices and multi-chain wallet custody. Engineered a matching engine, compliance service, and scaled trading services with leader election and Redis locks.

Microservices Flutter NodeJS MongoDB Redis Azure Container Apps Key Vaults Blob Storage Socket.IO BLoC Provider AML KYC (Sumsub)Shorebird

Software Developer

HackWit Technologies

Mar 2024 - Dec 2024 (9 months)

Built a cross-platform Flutter trading app displaying real-time cryptocurrency and market data, optimizing WebSocket streams and REST calls for low-latency rendering. Integrated FlutterFire, deep-link routing, and payment flows.

Flutter WebSockets REST FlutterFlow Push Notifications Deep Linking WebView Caching Performance Optimization

Google Summer of Code Developer

Liquid Galaxy

May 2023 - Aug 2023 (3 months)

Visualized real-time data of launches and 3D models of rockets and satellites using SpaceX API v4 on the Liquid Galaxy Rig. Implemented filtering, sorting, and accessibility features, improving user experience by 56%.

SpaceX API SSH Client KML Google Earth Pro Caching Asynchronous Accessibility Multilingual Support