Upstream 2023
live coding event

join us for fun & interesting C#, #PHP and #Go coding challenges on May 23rd
wifi: upstream

pw: Welcome@Annabel

Upstream 2023
live coding challenge

join us for fun & interesting C#, #PHP and #Go coding challenges on May 23rd


Who & why should join?

Meet your next employer

Are you looking for a company that doesn't just take CVs and resumes? By participating in our coding challenge, you can connect with such employers!

Scale-up career fair

Interested in meeting visionary founders and companies? Are you a full-stack, front-end developer, back-end developer, or data scientist? We've got the best entry-, mid, & senior-level jobs at fast-growing companies like i3d (Ubisoft Company) and and more.

Networking & side events

Come enjoy our fireside chat, get your professional photo taken, and meet Rotterdam's tech community.

register free

Open to job opportunities*
GDPR approval*

Our visionary sponsors

When & Where?

Tuesday, May 23, 2023, 2:00 p.m. to 5:30 p.m.
at Poppodium Annabel, Schiestraat 20, 3013 AH Rotterdam


Please register your ticket early on!



This leaderboard will update at 18:00, 23 May 2023

about upstream festival & the rotterdam tech ecosystem

Connect with the frontrunners of the next economy. In 2023, the Rotterdam Metropolitan area transforms into the place where junior tech professionals meet visionary startup and scaleup founders, other tech talent, students, investors, policymakers, and bold corporates.  Upstream is the place where all this comes come together to make a positive impact on the world.

Read more about Upstream Festival here and get full access with our discount code here

upstream 2022 aftermovie
Play Video about upstream 2022 aftermovie


You get a free ticket via this link if you would like to attend the May 23, Talent Day. Use this discount code link to buy a ticket to other Upstream Festival events.


If you wish to attend physically then you need a ticket. The ticket for developers is FREE. Register your free ticket here:

Poppodium Annabel, Schiestraat 20, 3013 AH Rotterdam -> click this link to navigate to Annabel 

*A “coding challenge” is a gamified bite-sized online problem-solving competition. It shows a software engineer’s technical skills; her/his approach to problem-solving; their ability to understand requirements and think clearly under pressure.

This fun coding event will take place at Annabel, Rotterdam, during Upstream Festival 2023.

Those who cannot attend the coding challenge can still participate online by signing up on this page. Once the challenge begins, we will send you the link to the competition.

It is not possible to register as a team. Individuals are eligible to participate in this coding event.

Please bring your laptop for the most comfortable setup. We cannot guarantee laptops on the spot.