Kotlin/Java Development Engineer

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

About Drillster

Drillster is a young and innovative EdTech company that markets a new way of learning. The adaptive and demand-driven learning application ensures that users quickly and intelligently develop, easily maintain and actually retain knowledge and skills. 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

The Kotlin/Java developer will be responsible for:

  • 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 e-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

Our ideal candidate will have:

  • Higher educational or university degree in software development or equivalent work experience;
  • Expert knowledge of Kotlin and Java, experience with Spring;
  • Experience in test-driven development and code modularization;
  • Experience with NoSQL and distributed SQL technologies, notably Cassandra and Yugabyte;
  • Experience with distributed architectures or micro services;
  • 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;
  • Is based in The Netherlands (no relocation benefits are offered);
  • A fun colleague!

What we offer

  • A flexible, dynamic and professional work environment.
  • A beautiful centrally located workspace with a view of Utrecht.
  • Appreciation. Work hard, play hard, so regular time for socializing.
  • Freedom and space for own initiative. Good idea? Work it out and go for it!
  • A cool product with great potential and great customers.
  • An international vibe.
  • Space to learn and grow, because our slogan is: learning with you!
  • Healthy shared lunch in our Drillster kitchen.
  • Competitive salary.

Do you recognize yourself in this description and are you ready for a new challenge? Then contact us using the form below, and who knows we’ll see you soon!

Drillster DNA

Want to know what our DNA is and if it fits you? Check below to see if we match!


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!
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