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Shipping web and mobile products
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Shipping web and mobile products
31 followers · 17 following

Achievements

Achievement: Pair Extraordinairex3Achievement: Pull Sharkx3Achievement: QuickdrawAchievement: YOLO

Achievements

Achievement: Pair Extraordinairex3Achievement: Pull Sharkx3Achievement: QuickdrawAchievement: YOLO

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mehedisarkar2k/README.md

Mehedi Hasan Sarkar

Full-Stack Engineer, web and mobile. For 4+ years I have built booking, payment and learning products for clients in Australia, Sweden and the UK.

I start with what can go wrong before I build a feature. The case studies show the problem, the decision and the trade-off: https://www.mehedisarkar.com/work?ref=github

What I work on

  • Booking platforms. A 10-minute slot hold, so two people cannot book the same court at the same moment. Reminders, cancellations and club payouts. Case study
  • Payments. Stripe across 4 products: manual capture, Connect payouts, refunds and 3D Secure. Money only moves when the booking is really going ahead. Case study
  • Inherited systems. On one salon booking system I documented 31 defects, fixed them in priority order and cut the mobile payload from 17.2 MB to 1.7 MB. Case study
  • AI content pipelines. Gemini OCR that turns scanned textbooks into typed content blocks, with per-page timeouts, retries and recovery after a worker crash. Case study
  • Mobile apps. Led a mobile team of 3 developers on 2 products and owned the App Store and Google Play releases. Worked on a padel booking app with 100K+ Google Play downloads.

Stack

TypeScript, Node.js, Express, NestJS, React, Next.js, React Native, Expo, MongoDB, MySQL, Redis, BullMQ, Stripe, Docker, GitHub Actions, Vercel, AWS.

Side projects

  • desco-balance-check: Telegram bot for prepaid electricity customers in Dhaka.
  • task-flow: project management app with a permission-aware AI assistant.
  • MindPop: offline-first brain-break games app, live on Google Play.

LinkedIn

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  1. desco-balance-check desco-balance-check Public

    Telegram bot for DESCO prepaid electricity customers in Dhaka. Balance, days-left forecast, low-balance alerts, and Bangla or English chat through Gemini with a fixed tool set.

    TypeScript

  2. task-flow task-flow Public

    Project management app with an AI assistant that acts only within the signed-in user's permissions (Azure OpenAI function calling). Next.js, Express, PostgreSQL, Prisma.