# Jubayer Al Mamun

> Jubayer Al Mamun is a software engineer based in Dhaka, Bangladesh (UTC+6), currently a Software Engineer at WeCycle. This is his personal site: writing on TypeScript, React, Astro and AI tooling, and case studies of products he has built end to end.

Every post and case study below links to a plain Markdown version. The complete text of the site, including his CV, is in [llms-full.txt](https://jubayeramb.com/llms-full.txt).

## Writing

- [Jev and System One Models: When You Need a Decision, Not a Chat](https://jubayeramb.com/writings/jev-system-one-model-vs-llms.md): What TypeSafe AI's Jev is, how a System One Model differs from an LLM, what the workflow benchmarks actually show, and when it makes sense to reach for one.
- [AI Skills vs MCP: When to Use What](https://jubayeramb.com/writings/ai-skills-vs-mcp-when-to-use-what.md): 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.
- [2024 Year in Review and Setting Goals for 2025](https://jubayeramb.com/writings/2024-year-in-review-and-next-goals.md): A look back at the successes, lessons, and hurdles of 2024, along with a roadmap for personal and professional growth in 2025.
- [2023 Year in Review and Next Goals](https://jubayeramb.com/writings/2023-year-in-review-and-next-goals.md): Reflection on the accomplishments and challenges of the year 2023 and outline the goals for the next year.
- [Handle JavaScript Promises in a Better Way](https://jubayeramb.com/writings/handle-javascript-pormises-better.md): Learn different strategies to handle data and errors in JavaScript promises.
- [Tailwind CSS Dark Mode without `dark:` Prefixes](https://jubayeramb.com/writings/add-dark-mode-tailwind-css-astro.md): Add dark mode to your Astro (or whatever) website using Tailwind CSS without `dark:` prefixes. Also supports `prefers-color-scheme` media query.

## Projects

- [Syncroll](https://jubayeramb.com/projects/syncroll.md): Chrome extension that scroll-syncs two tabs in Chrome's native Split View. Works on standard pages, chat UIs, and canvas apps like Figma.
- [Focrel](https://jubayeramb.com/projects/focrel.md): Local-first macOS focus app that binds wallpaper, music, to-dos, and macOS Focus mode to each context. Switch the realm with one click.
- [Triplone](https://jubayeramb.com/projects/triplone.md): AI-driven travel platform for tour planning, marketing automation, and agency management for tourism, all under one roof.

## About

- [About](https://jubayeramb.com/about/): Background, experience, recognition, education and stack
- [Now](https://jubayeramb.com/now/): What he is focused on right now
- [Contact](https://jubayeramb.com/contact/): How to reach him; fastest is a DM on X or LinkedIn

## Optional

- [GitHub](https://github.com/jubayeramb)
- [LinkedIn](https://www.linkedin.com/in/jubayeramb/)
- [X (Twitter)](https://twitter.com/jubayeramb)
- [Bluesky](https://bsky.app/profile/jubayeramb.com)
- [RSS feed](https://jubayeramb.com/rss.xml)
- [JSON Feed](https://jubayeramb.com/feed.json)