Senior Backend Developer

You develop for multiple user groups the backends of our AI applications. Of course you also support end users and product owners in the best possible manner. And together with your team members you run, maintain and improve the applications in the teams’ portfolio. In collaboration with the other developers and the UX designer you’ll design, build and implement new backend components and update existing ones making sure that the frontend and the backend work together seamlessly. As a scrum team member you actively contribute to the self organisation of the team and you coach your colleagues if requested. And do you enjoy presenting your work not only within your scrum team, but also within Naturalis and with our partners? Go for it! Here's what we have to offer A gross monthly salary of € 4.131,- to € 5.516,- for a full-time contract (36 hours). End-of-year bonus of 3.4% of your gross annual salary and 8% holiday pay. Time off thanks to 27 days of leave per year with full-time employment. Plus 1 extra day that you can use for a holiday that is important to you. Commuting allowance depending on your means of transport. Pension scheme via PFZW, where Naturalis pays 60% of your premium. A focus on your work-life balance . You can work partly from home and schedule your workday between 07.00 and 19.00. Plenty of development opportunities . We support your growth and give you unlimited access to the online training platform Goodhabitz. Fascinating knowledge events . These help you stay up to date on the latest developments in both your own field and outside it, such as our lectures and gatherings on various (scientific) topics. You can also attend – or take part in – the fascinating internal information session Naturalis Draait Door. A laptop and phone allowance. Nice extras such as discounts on software and hardware for private use, collective health insurance plans, and a bicycle scheme. You’ll also enjoy discounts in our museum restaurant and unlimited free access to our award-winning museum for you and your family. Fun team outings. We also get together for drinks every month, organise an annual BBQ and a fantastic New Year's party. Not your scene? That's fine too, of course. All team activities are voluntary. A unique work environment in a state-of-the-art building where you will feel proud to work every single day – we guarantee it! The world lies at your feet! Literally. Whatever your role may be, you contribute to the preservation of our planet on a daily basis. Naturalis Biodiversity Center... is the national research and knowledge institute and a key player in biodiversity data and infrastructures. houses one of the largest natural history collections in the world. welcomes 500,000 museum visitors per year. collaborates with universities, expertise centres and museums around the world. has a staff of diverse colleagues in various functions and with many different nationalities, with whom you will work together in an informal atmosphere. This is your team Contributions that really matter for biodiversity. You can do that within the Application Development and Management department, where you work together with 27 enthusiastic IT colleagues. What characterizes us? The diversity. We count different job functions - from junior to lead -, multiple nationalities and we work on the most diverse applications. We work in four product teams that have stepwise improvement in their DNA. And we are innovative: we work platform-independently and are at the forefront of using new technologies. Whenever possible, we use open source technology and make the software we develop available as open source as well. The product team you will be a member of consists of software developers and machine learning engineers. Your team is responsible for managing, maintaining, improving and renewing the applications in the teams’ portfolio. In addition, your team also works on new applications. You make sure that the applications are safe, stable, scalable and user-friendly and work closely with colleagues from other departments and internal and external stakeholders. What you bring to the table A collaborative attitude and an open mindset, allowing you to adapt smoothly when working with colleagues, developers to researchers. You are a good listener who can turn complex information into clear solutions. Not only by yourself, but also by supporting your teammates to help them find solutions. You stay calm when issues occur, analyse them, and always look for the best way forward for the whole team. Furthermore you have: Bachelor-level or Master-level in a relevant field, such as IT or Computer Science. Familiar with different programming paradigms: functional programming, object-oriented programming and low-level programming At least 5 years of relevant experience in a similar role, with expert knowledge of our stack which includes Python (Flask), Postgres, REST/OpenAPI, Docker, SQL, bash and Linux. Experience with Agile working like Scrum or Kanban. Know how to work with - and setup - modern CI/CD workflows (GitHub/GitLab, Docker, Ansible, Terraform) and production systems. Experience with distributed systems e.g. Kafka, RabbitMQ, Cassandra would be useful. Become our new Senior Backend Developer Upload your CV and motivation letter via the application button no later than Tuesday the 4th of August 2026. Want to know more about the position before you apply? Call Wilfred Gerritsen, head of the Application Development and Management department via 06 – 227 07 176 or send an email to [email protected] . For more information about the application procedure, you can send an email to our colleagues in the P&O department via [email protected] . We are managing the recruitment for this vacancy ourselves; unsolicited acquisition is therefore not desired.