Kotlin/Java Development Engineer

To expand our backend engineering team, we are looking for a hands-on Kotlin/Java development engineer with a proven track record.

About Drillster

Drillster is a smart learning application that keeps critical knowledge, awareness, and skills top of mind, so employees can deliver top performance, using the right competencies at the right time. Drillster serves clients such as: AirFrance KLM, Rabobank, World Book, Achmea, the Dutch Railways, Helan, PerrySport, Univé, and many others There is a lot of attention for work-life balance, inclusiveness, diversity, and social development. There are now 9 nationalities working within the company (of +/- 27 employees). The internal working language is English.

What you will do

  • Direct input into the functional design and implementation of all of Drillster’s Java and Kotlin-based applications, as part of an existing software development team;
  • Implementing new and improving existing backend functionality, served through REST APIs;
  • Active participation in the entire product development and software development cycle, with a direct impact on the functionality and performance of a fast-growing digital learning platform;
  • Assisting our support department in answering the toughest customer questions;
  • Continuously thinking of how to improve our platform to allow it to scale up and to meet our ambition of becoming the leading memorization platform.

What you bring

  • Higher educational or university degree in software development or equivalent work experience;
  • Expert knowledge of Kotlin and/or Java, experience with Spring;
  • Experience in test-driven development and code modularization;
  • Experience with NoSQL technologies;
  • Experience with distributed architectures or microservices;
  • Experience with event-driven design;
  • Knowledge of and experience with REST APIs;
  • Good communicative skills;
  • A good command of the English language (other language skills are greatly appreciated);
  • A self-starting and self-motivating attitude.


What we offer

  • Fulltime or parttime job in Utrecht, The Netherlands;
  • The chance to make a meaningful impact on the future of learning;
  • An innovative product with great potential and great customers, like KLM, VodafoneZiggo, and Port of Rotterdam;
  • A flexible, dynamic, and diverse work environment;
  • A cool workspace in Dotslash, the start-up and scale-up hub of Utrecht;
  • Of course, you can also partially work from home;
  • Lots of freedom and space for own initiative; 
  • An international vibe. The working language at the office is English;
  • Competitive salary;
  • Space to learn and grow, because Drillster is: learning with you!

If you are an ambitious and hands-on Kotlin/Java developer, then please send an email addressed to Thomas Goossens with your cv and cover letter to jobs@drillster.com. We ask headhunters to refrain from calling or emailing us about this position.

Are we a match made in heaven?

Check if our DNA matches yours:


We work with inspiration and passion. Everyone on the team wants to help people get the most out of their abilities every day. That passion and genuine desire to help people learn better is the #1 core value of every Drillster colleague.


Knowledge is the basis from which we have developed and continue developing Drillster. This can be found in our scientifically supported method, in the ambition to be seen as an authority in our industry and in the ambition of the people who work for us. They are experts in their field and work continuously to improve their knowledge.


We love development. We see it as a challenge to constantly adapt to developments in the market, in technology and in educational science. Not a static whole, but a dynamic, ever-evolving team and product that moves with you. We always want to be one step ahead of our customers.


This goes a step further than customer friendliness, customer focus or collegiality. Reliability is through thick and thin, the highs but also the lows, thinking along, empathizing, communicating, co-creating: being a real partner to fall back on. This is how we deal with clients, and this is how we deal with each other.


Fill out the form below, upload a short motivation and your CV and send it off quickly. Would you like to know more about Drillster or the position? You can always call +31 88 375 05 00 and ask for Thomas Goossens.

I would like to join your team!

Great that you’re interested in a job at Drillster! Fill out the form, upload your cv and a short cover letter and maybe we’ll meet soon!