Senior Back-end Engineer
#LI-DNI
Develop the backend systems that keep our platform running smoothly and smartly
At Gomibo, we build almost all of our backend systems ourselves—from payments and logistics to order processing and content management. Our backend teams design and maintain the core systems that keep the platform running smoothly. As a Senior Backend Engineer, you'll lead complex projects, make key architectural decisions, and help your team deliver reliable systems that make a real impact.
This is a hands-on engineering role. You'll write code, make architectural choices, and work closely with product managers, designers, and fellow engineers to design backend solutions that stand the test of scale and complexity. You'll think in systems, not just features—spotting architectural bottlenecks, identifying cross-team dependencies, and designing solutions that scale smoothly as we grow.
English | Nederlands
What do you do as a Senior Back-End Engineer?
You'll work in a cross-functional product team of backend and frontend engineers, a product designer, and a product manager. You'll take ownership of technical solutions, improve backend performance, and help your team ship great features.
Some things you might tackle:
Lead or co-lead backend projects from design to deployment
Build new services and improve existing ones in PHP
Refactor parts of the order or invoicing system for scalability
Review merge requests and pair on complex features or bugs
Debug tough issues like unexpected race conditions in Redis
Collaborate with other teams on shared models or interfaces
Help shape the team's technical roadmap and priorities
Dive into Kubernetes and infrastructure topics
Provide thoughtful feedback and mentor others
We value engineers who care about maintainable code, make decisions with intention, and help others grow through coaching, feedback, and collaboration.
Our tech & workflow
Our backend is built for performance, reliability, and scale. We combine powerful languages, frameworks, and tools to support complex logic and high data volumes with clarity and control.
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
You'll join a team of approximately 5-6 engineers, a product manager, and a designer. Teams have clear ownership and collaborate closely when features span across domains.
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:

Terms of Employment
A good salary based on your experience
25 vacation days, with the possibility to buy more.

Growth
A clear path to expand your technical impact and leadership. You'll help your peers, shape architecture, and contribute to the team's technical strategy and long-term evolution.

Tools & learning
New MacBook Pro and premium hardware.

Culture
Friendly, pragmatic team where the best idea wins – regardless of who suggests it. We value clean code, thoughtful trade-offs, and improving things incrementally
Who are you?
You have strong backend experience, know how to build reliable systems, and enjoy working with others to ship high-quality code.
We expect:
6+ years of backend development experience
Proficiency in PHP
Experience with MySQL/MariaDB and caching with Redis
Understanding of distributed systems and messaging queues (e.g., RabbitMQ)
Familiarity with Docker, Kubernetes, GitLab CI/CD, and observability tools
Experience with GraphQL is a plus
Clear communication around architecture and trade-offs
Pragmatic approach to legacy code
Comfortable mentoring others through reviews or pairing
You are a technical and cultural role model for within the team
English | Nederlands
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.