Senior Backend Engineer

Tech stack: PHP, TypeScript, MariaDB, Redis, RabbitMQ, Docker, Kubernetes, Helm, Flux, GitLab (CI/CD), Sentry, Graylog, ElasticSearch, Postgres, GraphQL (Lighthouse)

Fulltime | 32-40h/w | wo-level | Head Office Groningen

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.

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?

Are you joining our team? Then we’ll not only make sure you have a great job, but also attractive employment benefits. Take a look at our full employment conditions here.

In addition to a good salary, a favorable pension scheme, and 25 vacation days per year (option to buy 5 more), you can also count on:

Terms of employment

• Monthly vacation allowance so you don’t have to wait for it.
• Lots of discounts at local businesses.
• Friends & Family vouchers.

Personal growth

• Training programs, one-on-one coaching, and peer learning sessions.
• The opportunity to take on more and more responsibility.

Culture & activities

• Plenty of (optional) social activities such as board game and video game nights, chess, bouldering, and Friday afternoon get-togethers.

Tools & hybrid working

• A good laptop
• Flexible starting times (between 8:00 and 9:00).
• Hybrid working: up to two days working from home.

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

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.