Back-end Developer (NL/EN)

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Junior Backend Engineer

Tech stack: PHP, Laravel, TypeScript, GraphQL, MariaDB, Redis, RabbitMQ, Docker, Kubernetes, GitLab CI/CD, Sentry, Elastic

Fulltime | 32 to 40 hours/week | HQ Groningen

#LI-DNI

Help build the systems that serve millions of customers

At Gomibo, we do almost everything in-house—from payments and logistics to warehousing and our product catalog. Our backend systems make all of that possible. As a Junior Backend Engineer (Software Engineer I), you'll be writing production code from the start—working on real features, fixing bugs, and improving the systems that power our platform in over 30 European countries.

You'll contribute independently to well-scoped tasks while developing a deeper understanding of our architecture and tooling. Experienced teammates are there to support you, but we expect you to take initiative, write reliable code, and ask smart questions when things get tricky.

Nederlands | English

Our tech & Worklow

  • Languages: PHP, TypeScript

  • Datastores: MariaDB, Postgres, Redis, ElasticSearch
    Messaging: RabbitMQ

  • Infra & tooling: Docker, Kubernetes, Helm, Flux, GitLab (CI/CD), Sentry, Graylog, Grafana, Prometheus, Loki

  • Frameworks & libraries: Laravel, ActiveRecord, GraphQL, Composer

  • IDE: PhpStorm

  • Workflow: Agile, daily standups, code reviews, open feedback culture

We work in focused teams—usually 5-6 engineers, a product manager, and a designer. You'll have ownership over your work and plenty of support when needed.

What you'll do

You'll work closely with frontend engineers, product managers, and occasionally a product designer. Together, you'll build and maintain systems that are central to how we run the business.

Some of the things you might work on:

  • Write backend features in PHP that power our core processes

  • Improve performance of queries and endpoints

  • Fix bugs, improve logging, and handle edge cases gracefully

  • Refactor code to improve clarity and maintainability

  • Review code from others and participate in technical discussions

  • Pair with teammates to learn new tools and work through difficult issues

  • Use Docker, GitLab, and Kubernetes in your daily workflow

What do we offer?

Next to a good salary, special Belsimpel Benefits, a beneficial pension plan and 25 vacation days a year, we also offer:

Growth

A clear path to level up your skills and responsibilities. You'll be paired with a mentor to support your development and learning goals.

Hybrid work

You'll work from our Groningen office throughout your onboarding. After that, you can work remotely up to 2 days per week

Tools

New laptop with premium hardware

Culture

A team where the best idea wins — not the person with the most experience. We value pragmatic choices, clean code, and continuous improvement.

What we are looking for

You've already built backend systems—on your own, in a previous job, or as part of a serious project. You don't need to know everything yet, but you should be confident writing backend code, debugging issues, and working in a team.

We'd love to see that you:

  • Have solid experience with real-world OOP production code

  • Understand SQL and can write efficient, readable queries

  • Are familiar with backend concepts like caching, databasing and APIs

  • Know your way around Git and the command line

  • Care about writing clear, maintainable code

  • Work well with others and communicate clearly—especially when something's unclear

If you have any questions regarding this vacancy, you can always contact our Talent & Recruitment Specialists. They are available on business days between 9:00 and 17:30 at the phone number 050-2113856. You can also send an email to werken@belsimpel.nl.

Do you want to know what the application process looks like? Click here.

Gomibo Benefits

Will you be there soon? And only if you want to, because if you don't like it, that's fine too. At Gomibo, everyone can be themselves.

Here at Belsimpel, we go above and beyond for our customers every day. With millions of possible combinations, this can be quite a challenge. Luckily, we love challenges, so it’s one we seize with both hands. Is this something you would love to be part of? Come and join us! 
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