Catawiki / Job offers

Back-End Developer

Job Type: Permanant
Expected payrate: €35K – €55K
Job location: Amsterdam
Experience: Not relevant
Industry: Online Auction
Founded in: 2008
Total employees: 500
More about Catawiki...


  • Redis
  • ElasticSearch
  • JavaScript
  • Ruby
  • Git
  • nginx
  • Rails

Job description

What you will do As one of the fastest growing Online companies in Europe, we offer a unique opportunity for you, as a Back-End developer. We are rapidly expanding our Development team to facilitate the tremendous growth of the company. 

The team has to collaborate on solving 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 will be expanding even further, outside of Europe, in the near future. That is why we need your help; we want to expand our team by introducing even more expert knowledge. 

You will work on challenges around scale, microservice architecture and implementing new features in Product focused innovation teams in which Front-End developers, Back-End developers, a Designer, a Data Scientist, and a Product Owner all work closely together. 

We are driven by A/B-testing and automated testing, which allows us to do multiple releases per day on our high-traffic website. You will work with Ruby on Rails, nginx, MySql, Redis, ElasticSearch, Javascript, React, and Git in an agile development team of 60+ developers (and growing). We have headquarters in both Assen and Amsterdam in The Netherlands.

What we expect from you, What you can expect from us

Who you are

A Back-End Developer who speaks excellent English. You have

  • Significant experience in building complex web applications, ideally using RoR.
  • Excellent problem solving, communication and collaboration skills.
  • Experience with relational databases (MySQL)
  • Worked on high-traffic websites (preferred)
  • Experience with A/B-testing and conversion optimisation (preferred)

What we offer

This is your chance to become part of Europe's fastest growing tech company! You will have an exciting job in a young, fast-growing, dynamic & international organisation. In addition we will make sure you have a soft landing, should you have to relocate to the Netherlands.

Additionally, you can expect:

  • 25 days Paid holiday & holiday allowance
  • The Catawiki pension plan (no contribution from the employees, so Catawiki is paying for the whole pension plan)
  • Excellent opportunities for career development
  • Sponsored events and afternoon drinks
  • A fun team in a fast-growing online company facing complex challenges
  • Lots of room to work on great ideas, and to learn and grow

A capability test, informal reference check, Certificate of Conduct (VOG) and interviews in English are all part of our recruitment process.

Interested ?

Send an email with your CV to