Dress your code

Saturday, June 4th, 2016

12 pm CEST for 24 hours


What we build at Zalando is complex. Technology lies at the heart of all the products and services offered on the Zalando fashion platform - from our online shop, to brand solutions to warehouse management and logistics. Our goal: ensuring a world class user-experience for our 18+ million customers buying fashion and the 1,500 brands selling fashion on our platform.

Get your teeth into some of the challenges that keeps us on our toes everyday. Tackle them by using your programming skills, creativity and endurance.

Good Luck!


Rank #2-5

200 Euro gift voucher of your choice

Hackathon Hoodie

Rank #1

Pebble Watch

200 Euro gift voucher of your choice

Hackathon Hoodie

Rank #6-20

Hackathon Hoodie


  • The contest takes place on Saturday, June 4, 2016 from 12:00 PM CEST to Sunday, June 5, 2016 12:00 PM CEST.

  • There are eight system-graded challenges to solve. Scoring details for each system-graded challenge will become available when the contest begins. HackerRank's scoring decisions are final for system graded challenges.

  • All challenges will be coded directly on the site. The system supports 20 major languages. You can take a look at the environment in which your code will run.

  • All the challenges will have a predetermined score. Score of a game is calculated using Bayesian Approximation.

  • Please refrain from discussing strategies during the contest.

About Zalando

Zalando is transforming from an e-commerce company into a multi-service platform that provides fashion as a service. We make it our mission to imagine and predict the infinite points of interaction between fashion and people - and develop the technology to make them possible. The 1000+ members of Zalando Technology build most of our products in-house and open source, from our logistics software to our mobile applications. We use Scala, Java, Clojure, Spark, React, Swift, and Docker- to name just a few.

Working at Zalando gives you the opportunity to experience the growth and opportunities that large companies offer, yet allows you to work in an environment where you start fresh everyday. When it comes to how we work, we believe that trusting each other is key. Through our culture of Radical Agility, we let the principles of Autonomy, Mastery and Purpose guide us. Our 90+ teams are made up of over 70 nationalities. Diversity is a key factor to our success - from the variety of skill sets and interests to the tools and languages our teams choose to use.