
Curious engineer digging large-scale legacy Rails apps. @RailsEventStore core and former leader. Organizing @drugpl and @wrocloverb conference.
Wrocław, PL
Joined May 2009
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Paweł Pacana retweeted
I'm happy to see that my appearance in @wrocloverb had some lasting impact:
skatkov.com/posts/2026-07-01…
Paweł Pacana retweeted
That’s a wrap on wroclove.rb 2026! What we’ll remember most are the smiles, great discussions, and afterparty vibes. That energy keeps us going – sending a heartfelt thank you to everyone who joined us 🫶
May this postcard bring you all warm memories of wroclove.rb 2026!
Paweł Pacana retweeted
wroclove.rb kicks off tomorrow! Brace yourselves for a weekend of inspiring talks, fresh ideas, and great energy 🔥
Quick reminders for Day 1:
• Registration → 13:00
• Workshops → 14:00
• Talks → 17:00
• Afterparty → 20:00 🍻
See you soon!
Paweł Pacana retweeted
"...it would be a shame to think of it simply as time to rest-up for more work. Sadly, this is the mindset for many us caught up in a world of pressure, productivity, and, well... more, More, MORE! We've got it wrong if we think of vacations (or even weekends) as a way to recharge for work. To put it another way, we shouldn't be resting so we can work. Work is necessary. Work is important. Meaningful even. Being effective at work matters. But we work so that we may rest. Rest is where the most important things live: families, friends, hobbies, play. The things that feed our souls. Fill yourself with those things and, somehow, you'll also be better at work."
world.hey.com/jz/sabbaticals…
Paweł Pacana retweeted
Stoked to be showing geneva_drive at Wroclove.rb in April! It's going to be fun (and highly durable too).
And it's live: ptrchm.com/actionbar/
✅ GitHub Actions in your macOS menu bar.
Always wanted this simple app, but couldn't find it.
A menu bar app that shows @github Actions runs with their statuses.
Now it exists.
Paweł Pacana retweeted
You already know @_m_b_j_ from his mutation testing workshop that he will run at #wrocloverb. And now he’s stepping on stage as a speaker too 🎤
Markus will give a talk titled “My core skill never was the typing” - expect sharp insights and plenty of food for thought.
Paweł Pacana retweeted
Blogged
Stop using DateTime in 2026 (unless you work for UNESCO)
blog.arkency.com/stop-using-…
Paweł Pacana retweeted
Ready to get hands-on with mutation testing?
@_m_b_j_ joins us to run a "Setup and operation of mutation testing in agentic world" workshop. As the author of Mutant, a mutation testing tool for Ruby, there’s no better person to guide you through it 🔥
Gonna be a good one!
Paweł Pacana retweeted
Have you noticed how great the Ruby docs looks like for the master?
docs.ruby-lang.org/en/master…
Thank you @_st0012 and the entire team contributing to RDoc for these improvements.
Paweł Pacana retweeted
The second batch of tickets is almost gone - we can't wait to see you all at #wrocloverb! 🤩
If you'd like to join us as a speaker, our CFP is still open and we're waiting to hear your ideas! Inspire your fellow developers, submit your talk here ➡️ papercall.io/wrocloverb2026
Paweł Pacana retweeted
Let's kick off the new week with exciting news - a new batch of tickets just dropped! 🥁
Don't miss your chance: grab your ticket and see you on April 17-19, 2026 at #wrocloverb ➡️ buytickets.at/wrocloverb/190…
Paweł Pacana retweeted
CFP closes in 1 day. Time is running out. Go, go, go! #Ruby #RubyConfAT
Paweł Pacana retweeted
Are you passionate about Ruby and have insights to share💡?
Step up to the #wrocloverb stage and inspire your fellow developers with your unique experiences and knowledge.
Discover what speaking at wroclove.rb entails and submit your talk➡️wrocloverb.com/speakers
Paweł Pacana retweeted
We love organizing #wrocloverb each year, but our monthly Ruby meetup is the cherry on top!
Come by this Monday, Nov 17, for an evening of great talks from by @hschnedlitz, @pankowecki and @mostlyobvious.
meetup.com/drugpl/events/311…
Paweł Pacana retweeted
We are blessed with amazing community partners at #RubyConfAT . Folks that are doing beautiful things for the #Ruby community day in - day out.
Thank you for being a part of our journey!
@sfrubyconf (tickets on sale!) @rubyconitaly (tickets on sale!)
Paweł Pacana retweeted
A feature I have never popularized in mutant: the build in parallel test runner.
github.com/mbj/mutant/blob/m…
Paweł Pacana retweeted
Ruby 3.4 warnings led me to refactor 100+ Slack message methods.
What started as a frozen string literal fix ended with a 20-line class that sparked joy.
Sometimes the simplest abstractions are the most satisfying.
blog.arkency.com/the-joy-of-…
Paweł Pacana retweeted
Did you know that `Time#utc` modifies the receiver? 😱
Use `Time#getutc` instead.
#rubyonrails






















