"One of the hottest startups in Amsterdam" - WIRED


Backend developer


Are you looking for an enthusiastic and committed team that is working together to make the world a little fairer? Do you want to work in a company where people from diverse backgrounds are more than welcome? Are you highly driven to grow yourself, our software and the company? Then keep reading! 👇


What will you do?

  • Contributing ideas on, and implementing code.
  • Adding new features.
  • Working test-driven.
  • Ensuring seamless integrations.
  • Collaborating with the rest of the tech team.
  • Investing in personal and professioonal growth.

Who are we looking for?

  • You have at least 3 years of experience as a backend developer.
  • You are used to working with Python (familiar with similar languages instead? We are still happy to have a chat!)
  • You have worked with several other languages, so you have a good understanding of the possibilities.
  • You are familiar with integrating with API's.
  • You have (basic) knowledge of (front-end) languages such as JavaScript/TypeScript, HTML, and CSS.
  • You like to apply design patterns, test-driven development, and security best practices.
  • You have experience with GitHub, GitLab, or a comparable version control system.
  • You preferably have basic knowledge of command-line tools (Linux). Not required, but a plus.
  • You can think and work on a level similar to a college or higher educational level. (A diploma is not necessary).
  • You are willing to work 40 hours a week.
  • You enjoy working at the office and are a real team player. At the same time, you can work independently and take responsibility.
  • You thrive in a dynamic and rapidly changing work environment, while you are working in a structured and precise manner.
  • You enjoy challenges, like to take the initiative, and are always looking to expand your knowledge.
  • You have a (professional) command of the English language. Command of the Dutch language is a bonus.

What do we offer?

  • A tech stack of primarily Python, JavaScript/TypeScript (Svelte), and AWS.
  • For version control and CI/CD, we use GitHub.
  • Monthly salary between €4500 and €6000 gross.
  • Share package (SAR).
  • Lunch and 8% holiday allowance on top of your salary.
  • A Macbook to do your work with.
  • 25 days off (based on 40 hours).
  • Flexible holidays + Good Friday and Liberation Day as extra standard holidays.
  • Lots of room for personal and professional growth, including external and personal coaching.
  • Plently of get-togethers, company parties, and team activities.
  • Becoming part of a driven team with a social mission.

The challenge

As a Backend developer, you are responsible for the further development and optimisation of our software. You bring several years of experience and expertise in building (web) apps as a backend developer. You are able to think along about the best-suited solutions and then implement these for a variety of issues. Moreover, you work together with a team of talented developers with whom you strive for top quality, user-friendliness and scalability for both your code and the product.


  • Thinking about, and implementing code to add new features to the product in a scalable way.
  • Working test-driven, with an eye for existing code, performance, and security. With this, you monitor and improve the overall quality of the codebase.
  • You will also ensure seamless integrations. Both between our own backend and frontend and also with external HR tools.
  • You will collaborate with the rest of the tech team and actively contribute to code reviews, technical discussions and knowledge sharing. Together, we will learn from our experiences and continue to grow. We are a small team, so your input is more than welcome.
  • Additionally, you will also get a lot of space to develop yourself both personally and professionally. So investing time and energy in training and development is also part of the job.

Acquisition in response to our vacancies is not appreciated.

Our tech stack:

Apply directly

Also if you feel you don't meet 100% of the criteria but are very enthusiastic about the role, we'd love to hear from you!

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Questions about the vacancy?
Feel free to reach out via email or request a callback.
Weergeven staat het sollicitatieproces wanneer er een kandidaat solliciteert op een vacature bij The Selection Lab

Step 1: application

Are you interested in joining our team? Send in your application!

Step 2: phone chat

If your resume aligns suffciently, we will schedule a (brief) introductory phone chat to get to know each other.

Step 3: assessment

When we are both positive after the phone interview, you will receive our soft skills assessment. This way you can get to know our product and at the same time we can get to know you yet a bit better.

Step 4: interview

If the outcomes of the assessment fit well, we will invite for an on-site job interview (sometimes more than 1). After the interview(s), we can decide together whether you will get on board.

Step 5: contract

When you get on board and agree on our offer it is time to sign your contract and jointly toast on our the partnership!

*The process can sometimes differ slightly from one job posting to another, due to an additional step relevant to a specific position.

Some of our extras

Daily free lunch
Providing a great and motivating working environment is one of our priorities. As part of this, we provide all our employees with a free lunch, for example.

Weekly drinks
A good team spirit is something we value highly. Our weekly get-togethers give us the perfect opportunity to bond, laugh and grow as a team.

Monthly parties and/or activities
We don't leave it at weekly get-togethers, once a month we take some more time to look back at our progress while enjoying food and a drink (or two) - provided by us, of course.

General moments of celebration
Not only do we believe it is important to achieve our goals as a team, we also like to celebrate our milestones together.

Meet the founders

Lotte Welten, the CEO of The Selection Lab

Lotte Welten-Everaers

"I am Lotte, co-founder and CEO of The Selection Lab. I have worked on four different continents with the aim of empowering minorities. I have become convinced that working together is the only sustainable way to fight prejudice. With The Selection Lab, I want to increase diversity and inclusiveness in the workplace and give everyone an equal chance at their dream job."

Joeri Everaers, the COO of The Selection Lab

Joeri Everaers-Welten

"I'm Joeri, co-founder and COO of The Selection Lab. I have a background in marketing and have always been fascinated by the intersection of data and intuition. Since within recruitment and selection choices are still overwhelmingly based solely on intuition, my goal is to add useful data to that process. In this way, with The Selection Lab, I want to ensure that companies start basing their HR decisions more on objective data."

Jordi Wippert, the CTO of The Selection Lab

Jordi Wippert

"I'm Jordi, CTO of The Selection Lab. As CTO of The Selection Lab, I am responsible for developing and maintaining our software. I believe that seamless integrations within (HR tech) ecosystems offer the opportunity to reduce the ever-growing number of tools. At the same time, we strive to build a product that simplifies the work for HR wherever possible."