Kamil Dzieniszewski Warsaw, Poland

Frontend lead who ships the tools developers keep open.

I lead React and TypeScript teams in Warsaw, build LLM features into products, and publish Chrome extensions with over a thousand users. I also co-organize meet.js.

Email me See the extensions
Kamil Dzieniszewski speaking at a Devin (formerly Windsurf) community meetup in Warsaw

Chrome extensions

Small, focused tools published on the Chrome Web Store. All work

CSR vs SSR Detector

Shows whether a page is server- or client-rendered, right on the toolbar icon. Keeps a history of the sites you checked.

github.com SSR
First HTML response 
<main>
  <h1>Build and ship software on a single platform</h1>
  <p>Join the world's most widely adopted developer…</p>
</main>

Server-rendered: the HTML arrives with the content already in it.

1,000+users, rated 4.6
Add to Chrome

YouTube Overlay Opacity

Makes YouTube's translucent player controls readable over bright video.

290+ users, rated 4.5

Comment Vibe

Reads the sentiment and tone of a comment section with an LLM.

Newest, rated 5.0

ZUREQ Shopper

Searches 8,900+ independent shops on the ZUREQ network, compares markets and builds ready-to-pay cart links. Listed on zureq.io as an independent-developer project.

7 users, rated 5.0

Community and talks

Meetups I help run, and sessions I've given.

All talks

Hiring a frontend lead?

Product engineering and AI features where the interface matters as much as the model behind it.

Email me