Radek Pietruszewski

Building something new…

🐘 @[email protected]

Advisor&ex-CTO @Nozbe, board member @hackerspacepl, prev: @TadamApp @BeamValley @thepodcastfm, @radex_io

[Radek Pietruszewski @radexp]

⚡️ I made JSON.parse() 2x faster. Adventures in hacking @HermesEngine internals for fun and profit!

https://t.co/aGCjJMUrx9

[Radek Pietruszewski @radexp]

I recorded a short jsonnet tutorial (so you never have to use json or yaml for configuration files again).

Clickbait courtesy of q3k.

https://t.co/Yz1wVIooPI

[Filip Jerzy Pizło @filpizlo]

Fil-C: the memory safe C/C++ implementation you always wanted

https://t.co/UA10qZfGiE

[Radek Pietruszewski @radexp]

@Dimillian Do you miss Objective-C ?

[Radek Pietruszewski @radexp]

@mo__javad @kacperkapusciak @reactuniverse_ looks like someone introduced you to the 🇵🇱 funny number

[Radek Pietruszewski @radexp]

The third place was disputed, but I lost rock paper scissors to @EricVicenti 😄 Fun race

[Marc @mrousavy]

Mike is the best driver and React Native engineer in the world. 😐
(i made a stupid bet)

[Radek Pietruszewski @radexp]

@radko93 @GroundControl @mo__javad @reactuniverse_ i was caught in a trap of my own making

[Radek Pietruszewski @radexp]

@radko93 @GroundControl @mo__javad @reactuniverse_ why? so easy, so therapeutic

[Radek Pietruszewski @radexp]

I have it on good authority that this is funny to people working on JavaScript engines 😁 @HermesEngine

[Radek Pietruszewski @radexp]

JavaScript is like an onion. It has many layers, and the deeper you peel, the more your eyes water.

[Radek Pietruszewski @radexp]

@mrousavy @reactuniverse_ Wait until you learn about Objective-C++ !

[Radek Pietruszewski @radexp]

Giving FREE* Objective-C advice on @reactuniverse_

* - you get what you pay for

[Radek Pietruszewski @radexp]

@jamonholmgren @Baconbrix @reactuniverse_ Transforming "impossible" into merely "late" 😎

[React Universe Summit | June 23, 2026 @reactuniverse_]

@radexp: “Objective-C is great actually” - change my mind

[Radek Pietruszewski @radexp]

I'm in Wrocław for @reactuniverse_ this week!

[Radek Pietruszewski @radexp]

@J_Lempart @boczemuniepl O proszę, cześć koledzy! 👋

[Radek Pietruszewski @radexp]

@zats Yep, we do, happy birthday ❤️

[Radek Pietruszewski @radexp]

It's my birthday today

Unrelatedly, Sunday's elections' results became official today. And democracy prevailed, and there is hope. 🇵🇱

[Szymon Pifczyk @sheemawn]

It's 2023, 109 years after WW1 started, yet the pre-WW1 imperial borders are still visible on the election map of Poland - and on many others, for that matter.

A thread 🧵🧵🧵-->

[Radek Pietruszewski @radexp]

@zats Seems like it!

[Radek Pietruszewski @radexp]

🇵🇱 Fingers crossed for the result of today's parliamentary elections 🤞