I'm Abdul Hamid Shuvo. I have spent 17 years building software, including 9 years at Chaldal (YC S15), where I built and shipped national scale grocery and logistics products from scratch.
I started freelancing in 2009 and later co founded Dwetech. From 2009 to 2016, we delivered more than 60 projects for clients in the USA, UK, Canada, and Australia.
In January 2017, I joined Chaldal (YC S15, about 2,200 staff) when the company had only a minimal desktop site and no production mobile web or native shopper apps. I built the mobile web from zero, rebuilt the desktop experience, and shipped Android and iOS shopper apps as primary engineer.
“Real engineering shows up in reliability, especially under unstable networks and operational pressure.”
I build and own products end to end, from first release to long term production support. Since 2017 at Chaldal, I have worked across mobile web, native shopper apps, Chalao ride sharing, Chalao Driver logistics, and Protocol.
ChaldalConsumer grocery app for Chaldal’s national delivery platform. Primary engineer on the original Android and iOS build from the ground up, with ongoing releases and production ownership across the shopper stack.
Android: 1M+ downloads and 4.4 stars. iOS: 4.8 stars. Supports national scale traffic, payments, and fulfillment in a regulated retail environment.
GogoBanglaMerchant facing fulfillment app for Chaldal’s B2B logistics platform. Ecommerce and f commerce sellers use it for picking, storage, and last mile delivery on the same network used for national grocery scale.
Live on Google Play with ongoing releases. Supports merchant order fulfillment, pickups, and exchanges across Chaldal’s logistics footprint, including dozens of large stores and hundreds of online merchants.
ChalaoConsumer ride-hailing app licensed under Chaldal. I built the application and owned the regulatory path: BRTA meetings, documentation, and enlistment so we could operate in that category.
Chaldal was listed among operators receiving BRTA enlistment certificates in The Daily Star (Dec 2019). The ride sharing line did not continue.
Chalao DriverProduction React Native app for Chaldal’s own last mile drivers. Covers dispatch, navigation, earnings, and field operations.
Designed for real world constraints such as unstable connectivity, location reliability, and battery limits. Full product ownership from specification through production.
ProtocolInternal and mobile collaboration platform used by operations, finance, HR, and engineering teams.
Improved task visibility and coordination at scale with a practical workflow model used by 1,000+ internal users.
Subject / EggShellOpen-source application stack contribution focused on frontend layer APIs and foundational component patterns.
Shaped early architecture decisions and reusable building blocks for the frontend layer.
Senior Software Engineer
[ CORE SYSTEMS ]
A random micro challenge on each visit. Topics include TypeScript, React, Tailwind, and web APIs.
Frontend lab
A tiny interactive skill demo loads after mount so every visit can get a different challenge without changing the server-rendered markup.
Arcade break
Quick retro distractions — no account, just play.
Snake
Score 0Arrow keys or pad below
Reflex
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