Maximize your impact

About the Challenge

Back-End Developers are in charge of the architecture and (business) logic in the background of an application. They usually manage the database and the underlying conceptual business model, fitting in new requirements when necessary. As a Back-End Developer, you have the technical skills to integrate with a lot of external systems and the application's front end as well. Most back-end developers are also familiar with cloud technologies.

Your responsibilities include: 

Implementing functional requirements in a working (technical) solution

Reviewing, testing and refactoring to ensure the system's correctness throughout the lifecycle

Anticipating and communicating (technical) caveats to other developers and stakeholders

Delivering quality software that is maintainable and extendable by other developers

Staying informed and up-to-date of the latest technologies and practices


Your skills

As a Back-End Developer, it's important that you know how to write decent code. You also need good problem-solving skills, research skills, and an analytical mindset. To communicate with all stakeholders, good communication skills are important as well. 

Besides that, you can demonstrate: 

Decent knowledge of at least one major back-end framework

Basic design knowledge

Proficient with version control (e.g. Git)

Good knowledge of scripting languages (Bash, PowerShell, Python, etc.)

Knowledge of (PL)SQL + ElasticSearch and other NOSQL databases

Knowledge of Cloud-stack (AWS or Azure)

Knowledge of Agile tools

Fluency in English

Our offer

Exellys isn’t your typical recruiting or consulting agency, we’re a different breed. We are a tech talent incubator, which is every bit as cool as it sounds. Here’s what you can expect from us: 

You’ll join an awesome community and enter one of our Smart Programs, based on where you are in your career and where you want to go. Did we mention you’ll get a personal coach as well?

Next to a generous monthly salary, you'll receive a flexible mobility budget and tons of other benefits (pension, daily compensations, etc.)

You’ll spend most of the time at (y)our client’s, except for regular Exellys trainings, fun events, tribe meet-ups, after works, knowledge sharing sessions, etc.

After two years of coaching and upskilling from Exellys, you’ll get the opportunity to join (y)our client’s organization as an internal employee. Or if you prefer to stay with us, you could explore our follow-up Smart Programs as well.

Key figures

  • Founded in 2014
  • Offices in Mechelen, Diegem, Amsterdam and London
  • Part of ProjectiveGroup
  • Awesome community of 300 consultants

Company insights

More about this organisation

Our mission is to attract, develop and retain the finest tech talent. We find the perfect match, so our consultants can fully develop their skills while also feeling happy in their jobs. 

What distinctly sets us apart, is our focus on training and coaching. Every Exellyst gets a generous personal training budget and is also assigned a Talent Development Manager (TDM). Your TDM is your point of contact for every issue you encounter, large or small. Our goals is to see you shine, grow and succeed faster than your peers who don’t benefit from the Exellys model.

Since we encourage our consultants to integrate with the client after two years, we’re always on the look-out for fresh talent. That’s where you come in.

Next steps


  • Apply now
    We'll get back to you asap
  • Ace a phone call
    Don't worry, this won’t take long
  • Convince us
    You can expect up to 2 rounds of interviews
  • Show your skills
    A series of technical tests based on your expertise
  • Sign the contract
    Welcome and congratulations!

Go for gold. Be excellent

Maximize your impact. Get in touch.

Bonne van der Laan