DevOlympics and 42workspace ran the first ever Rotterdam Coding Challenge as part of the Upstream Festival on the 1st of June.

You can still try this problem-solving exercise for full-stack software developers. The challenge is cloud-hosted, just sign up on the right hand side and code!

The challenge takes 5-10 minutes to solve and can be completed in these languages:

C, C#, C++, Go, Java, Javascript, Kotlin, PHP, Python, Ruby, Swift, TypeScript

WHERE WE ORGANIZED THIS EVENT: 42Workspace at the “Vault“, Schiedamse Vest 154, 3011BH Rotterdam, NL (click to navigate)

WHEN: 12:00 – 17:00, 1st June

We announced the top 3 winners in Vault at 17:00 on the day of the event.

The winner has received his Top Coder Certificate shortly after the announcement.


People can mingle with scale-ups at the network drinks (17:30 - 18:30) (free ticket for talent day) Or get a 15% discounted 3-day pass to join all days, including the closing party on Thursday.

register here!

Open to job opportunities*
GDPR approval*

When you submit your details you explicitly agree to the Upstream Festivals terms and conditions.