I build the product and the systems behind it.

Portrait of Jubayer Al Mamun

I've spent the last few years shipping production software end to end, from Postgres schemas to pixel-tight UI. I care about well-considered interfaces, fast systems, and code that ages well.

Currently a Software Engineer at WeCycle. CS graduate, mostly self-taught, still learning in public.

Experience
4+ years
Stack
TypeScript, React, Node.js
Based in
Dhaka, UTC+6

Open to freelance work

Work

Selected work

All projects

2026

Syncroll

Designer & Engineer · Personal product

Chrome extension that scroll-syncs two tabs in Chrome's native Split View. Works on standard pages, chat UIs, and canvas apps like Figma.

Sync modes
3
Chrome target
v145+
Pairs
Cross-mode

2026

Focrel

Designer & Engineer · Personal product

Local-first macOS focus app that binds wallpaper, music, to-dos, and macOS Focus mode to each context. Switch the realm with one click.

Platform
macOS native
Data
Local-first
Status
Free beta

2025 to Present

Triplone

Engineer · Triplone

AI-driven travel platform for tour planning, marketing automation, and agency management for tourism, all under one roof.

Surfaces
Customer · Agency · API
AI tools
8+
Status
Pre-launch

Writing

Recent writing

All writing

7 min read

AI Skills vs MCP: When to Use What

A practical guide to AI agent skills and the Model Context Protocol. What each one is, what it costs you in context, and how to pick the right one without overthinking it.

Now

Working on

Scaling the backend infra and the CI/CD pipeline at WeCycle. Gradually migrating to microservice from the monolith architecture.

Updated

What I'm up to now

Contact

Get in touch

Fastest way to reach me is a DM on X or LinkedIn. I reply almost instantly. You can also email me or ask my CV through the chat on this site.

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