Advent of Code 2021
Catawiki raffle
Congratulations to Zeyu Chen!

Thank you to everyone who participated, you made this a really fun challenge... and we hope you'll join us again next year!

Catawiki is happy to be sponsoring Advent of Code 2021.

Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like. Every day from 1st to 25th December, there are two challenges. For each challenge you solve, you’ll be rewarded with 1 star.

We’ve set up a few private leaderboards for this challenge, where you can compete and hopefully win a prize through our raffle!

The skills required for this challenge are similar to those used by our Tech team at Catawiki to solve some complex development tasks that result from our continually increasing numbers of sellers and buyers (14 million monthly visitors and rising!). We’ve already implemented localisations for various European countries and we’ll be expanding even further, outside of Europe, in the near future.

Learn more about technology at Catawiki
How to enter
  • Create an Advent of Code account
  • Fill out the form through the link below and join one of our private leaderboards
  • Win at least 35 stars to enter the raffle
  • Win all 50 stars and get an extra raffle ticket
  • Only 1 participation per person. Catawiki employees are not eligible to participate in the raffle
  • Winner will be picked at random on January 7th at 12:00 CET
Prize for the raffle winner
  • €200 Catawiki voucher, and
  • €200 (or $ if that's your thing) Amazon gift card.
Ready to participate?

If you have any questions, contact

Click here to enter the contest
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