Konstantin Velichko

Konstantin Velichko

Senior Frontend Developer

Architecting DX-focused UI systems · Fastify · Accessibility · Web Performance

Vue / Astro / React / Node.js

Who I am

I'm a Senior Frontend Developer based in Bishkek, Kyrgyzstan. I build fast, accessible websites. In 13 years I've gone from IE6-compatible layouts and email templates to architecting frontend systems and custom frameworks.

Technical problems hold my attention more than feature work. If something's broken in a non-obvious way, or needs building from scratch, I want to be on it.

What I'm working on

Right now I'm working with Astro.js, Vue 3, and Fastify. Performance and accessibility are recurring themes. I also use AI coding agents (Claude Code and OpenAI Codex) and build the tooling around them: automation hooks, commands, and structured code generation.

I also built @zoxon/nux, a lightweight JavaScript framework for component lifecycle management (how it works). Writing it taught me more about TypeScript and framework internals than anything else has.

Beyond code

Outside of work, I play video games: ones with either good gameplay or strong stories.

I also like working with my hands — fixing things, building DIY projects. I spend most of my time outside work with my wife and our kids, Kirill and Alice.

If you have a frontend project in mind, reach out.