Li@ng

Vibe coding — what next?

3 months ago • AI • vibe-coding • culture

AI is boosting how fast we ship. But if the person who built it doesn't understand it, how do we keep the product sustainable?

Rewriting is a beautiful trap

5 months ago • refactoring • legacy • migration

Developers hate spaghetti code and love the idea of starting fresh. But rewriting not always goes the way you think it will.

You ain't gonna need it

11 months ago • 2 cents • platform

We built our new gateway multi-regional by default. It sounded great. In practice the gains were small and the cost was real. A reminder that YAGNI applies to architecture too.

Good enough for now and improve it later?

1 year ago • 2 cents • culture

"Improve it later" and "good enough for now" are sometimes necessary. But even with time pressure, some things you can compromise on and some you can't.

Why you should say no to feature requests

2 years ago • platform • culture

As a platform team you get requests from many clients. Knowing when to say no protects your service, your team, and your users.

Know your unknowns

2 years ago • 2 cents • learning • career

Frameworks come and go. The anxiety comes from fear of the unknown. Here's my 2 cents to mitigate the anxiety.

Works for 10, breaks at 10k

3 years ago • debugging • scale • reliability

At low traffic, many bugs stay invisible.

Scratching My Own Itch: A Set of Micro-Utilities

3 years ago • PoC • utilities

A handful of small, focused utilities born out of curiosity and real itches worth scratching.

Conflicts as Always? Yes, and That Is Normal

3 years ago • team-building • culture

Conflict in engineering teams is unavoidable. The question is not how to eliminate it, but how to make it productive. Some thoughts from a tech lead perspective.

AleOJ

4 years ago • hobby-project • sandbox • golang

A LeetCode-style online coding judge built end-to-end — from sandboxed code execution in Docker to the React frontend — driven by curiosity about runtime isolation and secure multi-tenant execution.

Helbus: Turning Open Data into a Public Good

7 years ago • hobby-project • real-time-systems • mobile • civic-tech

A real-time bus tracking app for Helsinki, born from a personal painpoint in Finnish winters and built on HSL's open MQTT data — reached top 10 in the App Store travel category before HSL shipped their own.

Realtime Chat Room

8 years ago • hobby-project • web-app • websocket

A WeChat-style responsive chat room built as a single-page app from scratch.

ResQue: Kill the Queue, Not the Time

8 years ago • open-source • real-time-systems • mobile • civic-tech

An online queuing system that replaces physical queue machines.

Smart Campaign

8 years ago • data-mining • machine-learning • hackathon

A recommendation pipeline that models customer preferences from social media, matches them to live events worldwide, and generates personalized Finnair campaign offers with flight tickets.