Ruby Ruby Ruby Ruby
Ruby Ruby Ruby Ruby
Ruby Ruby


11.04.2023 @ Barka, Podgórska 16

KRUG #2 / 2023 powered by community :)

KRUG #1 / 2021 powered by Infakt

Browar Lubicz, Lubicz 17J

Hello Ruby Enthusiasts!

It's time for the next KRUG meetup!

This time, we will have two great technical talks! The second one will be presented by Samuel Williams, who is a Ruby core committer!

KRUG #1/2021 is powered by inFakt (

inFakt has been transforming the accounting services market since 2008. inFakt has come to the path from a simple invoicing web app, next to a solution for self-service accounting, up to the most sophisticated service called Full Service Accounting. inFakt is changing the accounting industry by automating accounting processes.
They are the biggest accounting company in Poland, connecting software and accountants for contractors and limited liability companies.

Meetup details: KRUG #1/2021 -[masked] @ Browar Lubicz 19:30.


- 19:30 - Opening - A Few Words from Organizers
- 19:45 - "Błędy się opłacają" czyli o naszych doświadczeniach z programem BugBounty po 2 latach by Team inFakt [PL/PL]
- 20:30 - Q&A session
- 21:00 - Event Driven Concurrency with the Ruby Fiber Scheduler by Samuel Williams [EN/EN]
- 21:45 - Q&A session
- 22:00 - Networking

Good to see you after long break :)

Useful links:

inFakt (
KRUG meetup page ( )
KRUG Facebook page ( )
KRUG Github organization page ( )


Would you like to share your concepts or dilemmas on one of our KRUG events? Or maybe you are up for sponsoring one of them? If your answer is yes to any of the two questions, drop us a message at