Piotr Pasztor

👋

[Szymon Rybczak @SzymonRybczak]

🔜

[Marcin Uchacz @marcin_u2]

hosted @SzymonRybczak from @TesterArmy (YC P26) and @TheTuso at our office in Cracow today.

Szymon is building an AI QA platform. product's great, already using it at @unabyssapp :)

if you're a founder visiting cracow, hit us up ☕

@bartosikdominik @philip_kub @morawski_aw

[Szymon Rybczak @SzymonRybczak]

just had an amazing conversation with @zenorocha

crazy how much you can learn from legends like Zeno in just 30 minutes

[Szymon Rybczak @SzymonRybczak]

good morning YC Demo Day!

[Szymon Rybczak @SzymonRybczak]

hanging out with @theo at YC Alumni Day! 🫶

[TesterArmy (YC P26) @TesterArmy]

TesterArmy now supports testing on Android 🤖

You can upload your .apk and start testing in minutes.

Try it now for free!

[Szymon Rybczak @SzymonRybczak]

this is what AUTOMATED UI testing looks like

> Sign up and send a message

testing @expensify iOS app with a single prompt

[Oskar @o_kwasniewski]

new @TesterArmy landing page just dropped 👀

[Kamil Stanuch @KamilStanuch]

Cafe @cursor_ai Krakow is back! 🇵🇱☕️

Time to burn some tokens and buuuuuild.

So on Tuesday May 12th, we’re taking over Targowa2 at Stare Podgórze for a full day of building, networking, and high-quality caffeine.

What exactly is Cafe Cursor?

It’s a global series of pop-up co-working events where we "take over" a local cafe to bring the Cursor community together. Originally started in San Francisco and expanded to tech hubs like London and New York, it’s a space where developers can bring their laptops, work on their latest projects, and exchange ideas in a relaxed, high-energy environment.

The Plan:
💻 Co-work: Grab a table and build alongside other local developers.
☕️ Fuel: Coffee is on us for the duration of your stay!
💳 Perks: Exclusive Cursor credits for those who come to work

Last time we hit 200% capacity in 48h so this time we are taking over a slightly bigger space.

When: Tuesday, May 12 | 09:30 - 16:00
Where: Targowa2, Targowa 2 Kraków

How to join:
We have limited co-working slots (9:30-13:00 or 13:00-16:00). Please register via the Luma link below to secure your spot. If you just want to pop by for a quick coffee and a chat, feel free to drop in anytime!

👉 Link to luma: https://t.co/t3cFpO2bx1

Again, special thanks to @benln & @ftnabeelah for your incredible support in making this happen!

[Michał Podlewski @trajektoriePL]

I met @SzymonRybczak a day before his flight from Kraków to US. It’s rare to see a 19-year-old with such a razor-sharp focus and relentless motivation to build something great. Make sure to follow him and @testerarmy on their journey. Soon we will record a conversation about building an AI startup in San Francisco, so stay tuned!

[Szymon Rybczak @SzymonRybczak]

we just moved to San Francisco to participate in @ycombinator P26 batch 🇺🇸

we're taking @TesterArmy to the next level and building the future of testing web & mobile apps 🪖

we're so back

[Kamil Stanuch @KamilStanuch]

Long story short: join us for the next Cursor Meetup in Kraków on April 15th!

Last time we met for a coffee, reached 200% capacity in 48h so this time we're bringing together developers, indie hackers, and AI builders for a proper meetup to exchange ideas, workflows, and lessons learned from actually shipping things.

Grab your ticket (limited spaced): https://t.co/1vrkO4bSFE

What to expect?

​🍕 Pizza, drinks & warm-up
We’ll kick things off casually - grab a slice, meet other builders, and get into the flow.

​🎙️ Speakers (TBA)
We’re lining up practitioners who use Cursor and similar tools in real workflows. Expect practical insights, not theory. Speakers will be announced soon.

BTW want to be a speaker? Let me know!

​🛠️ Builders scene
This is the core. Bring your laptop. Show what you’re working on. Get feedback, share your setup, or pitch your product.

​If you’ve been building with Cursor - or thinking about it - this is the room you want to be in. See you there! 👋

[Szymon Rybczak @SzymonRybczak]

very excited to build with @krzysztof_moch again!

shipping products with friends from high school is the way! 🔥

[Szymon Rybczak @SzymonRybczak]

just got into @ycombinator's next batch while still in high school!

we're building a new devtool company @TesterArmy

our mission is to change how testing web (and soon mobile!) apps will look like 🫡

moving to San Francisco for the batch and beyond! 🇺🇸 DMs open

[Szymon Rybczak @SzymonRybczak]

we're working on a new devtool company

the goal is to provide reliable feedback to humans and agents whether new feature/bugfix/refactor works correctly.

it's time to remove testing bottleneck.

DMs are open, feel free to reach out for early access!

[Adam Pietrasiak @pie6k]

Thanks @cursor_ai @KamilStanuch for organizing!

I have quite some thoughts about Krakow startups/talent landscape after meeting all the folks:

- It was extremely inspiring to see those 17-year-olds already doing absolutely stunning things (like yc), having a great mindset, being humble and confident at once in a very good way
- We have a great talent pool of 25+ yo people, but a few things concerned me:
- In SF, you’d likely hear “I work on this and that.”
- Here you often hear: “I work at this software house, but in reality I’d love to work on this and that.”

Some hypotheses and conclusions:
- for those young folks - some help and guidance (maybe financial) might make a difference between them creating a unicorn or doing it for someone else
- There is huge wasted potential of creating great products here and creating some “valley” which is drained elsewhere and also might be caused by some suboptimal mindset which I’m not sure what could fix

[Szymon Rybczak @SzymonRybczak]

usually we’re here at this venue for @appjsconf

but this time we’re here for school prom

100 days until graduation! 📝

[Szymon Rybczak @SzymonRybczak]

first day at @borndotcom today!

time to build some amazing React Native apps 🚀

[Szymon Rybczak @SzymonRybczak]

Today is my last day at @callstackio! It's been a ride! 🫡

◆ joined when I was 16 as the youngest employee,
◆ found and fixed a bug in React Native core, became youngest contributor ever,
◆ post with announcement went viral on X,
◆ grew my X account from 0 → 5k followers,
◆ made 10+ public talks,
◆ celebrated my 18th birthday at a company party,
◆ worked with ∞ core contributors, framework creators and people shipping RN apps to millions of users

Amazing 3 years pushing React Native to limits! 🔥

[Born @borndotcom]

We’re excited to welcome @o_kwasniewski and @SzymonRybczak to Born.

They are exceptional engineers and fit perfectly into our mission to rethink how people connect with AI friends through our upcoming product.

Together, we’re building the category-defining company in companionship.