About

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Photo of Ivan Esmantovich

Hello!

I'm Ivan, software engineer, who likes to experiment with web technologies and write about it.

I'm currently working as a frontend developer at Kontur, where i lead UX/UI engineering for Kontur.Talk, building the bridge between creative design and technical implementation, with a focus on performance, maintainability and accessibility.

I also like lifting weights, running, playing badminton and cooking.

I'm currently based in Sochi 🌅

I was born in Norilsk and lived there for 15 years ❄️

You can write to me via email.

Notes

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On Keyboard Ergonomics and RSI Prevention

For longer hacking sessions

August 3, 2025

Norilsk

My hometown

August 2, 2025

Thoughts

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Losing my mind again debugging HTTP signatures. So easy to have flakiness between implementations.

April 8, 2025

Upgraded to the latest Tahoe beta and now a couple of apps seem to be confused. Nova thinks it’s expired. I have an older serial number, but they should work forever just without updates. I think something might be weird with the system keychain

April 8, 2025

Mac folks, any bugs you’ve noticed recently in the Micro.blog app? Fixing a couple little things for macOS 26 Tahoe beta

April 2, 2025

Résumé

For recruiters

Blogroll

Great People of the Web

About this site

This site is built with Astro and deployed via Cloudflare Pages.

All images are compressed with Squoosh and processed using Atkinson Dithering.

The source code is available on GitHub.

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