I will build a custom billing, tracking, or internal business web app

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samiul_a_sumel
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samiul_a_sumel
Samiul A Sumel
build a custom billing, tracking, or internal business web app
Full Screen
build a custom billing, tracking, or internal business web app
Full Screen
build a custom billing, tracking, or internal business web appbuild a custom billing, tracking, or internal business web app

About this gig

I turn manual, paper-based, or Excel-only business processes into real web apps because that's exactly what I've done for my own employer.

I work at Bangladesh's second-largest seaport, handling billing and cargo/vehicle tracking daily. I built the fix myself: a wharfrent billing calculator (slab-based charges, VAT/levy, print-ready output), an overtime payroll system, and a vehicle tracking dashboard with real-time sync across 8 locations, charts, and Excel export all live and in daily use.

What I can build for you: billing calculators, tracking dashboards, internal ops tools, booking systems, admin panels with CRUD, and data-driven dashboards with export. Stack: React, Next.js, Node.js, Cloudflare Pages/Workers, MongoDB or your preferred stack if reasonable.

I use Claude Code as part of my workflow, but I design the system and verify every piece myself you get a working tool, not an unreviewed output.

  • Programming language

    • JavaScript

  • Expertise

    • Debugging
    • Performance
    • Security
    • Databases
    • Source control

  • Frontend framework

    • Next.js
    • React.js
    • Tailwind CSS

  • Backend framework

    • Express.js
    • FastAPI
    • Node.js

  • AI & low/no code builders

    • Claude

Get to know Samiul A Sumel

Samiul A Sumel

Full Stack Web Developer React Next JS Node JS and MongoDB

  • FromBangladesh
  • Member sinceAug 2024
  • Avg. response time1 hour

  • Languages

    Bengali, English
I build full-stack web apps with React, Next JS, Node JS, and MongoDB, and I've shipped 3 into daily production use, not just portfolio pieces. 12+ years in port operations at Mongla Port Authority (Bangladesh's 2nd-largest seaport) taught me to spot real workflow problems. I taught myself to code and built a wharfage billing calculator, a vehicle tracking dashboard, and an overtime billing system, all used daily by real staff. Completed a full-stack bootcamp covering React, Next JS, Node, Express, MongoDB, auth, Stripe, and deployment. Reliable, detail oriented, available worldwide.

My Portfolio

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