Senior Software Developer | Utrecht

The Dutch subsurface plays a key role in the energy transition. How? Think of underground storage of sustainable energy in former gas fields or the extraction of geothermal heat. All major energy and climate topics require access to more and more data through various applications. As a Senior Developer at TNO, you develop both frontend and backend services to meet the information needs of researchers, governments, and commercial parties. You can also focus on database technology. The choice is yours—we’re looking for a Senior Developer with a passion for the latest technologies and a strong interest in (geo)data!

As a Senior Software Developer, you contribute to TNO’s legal responsibilities in subsurface data registration, such as for the BRO and the Mining Act. In a Scrum team, you build services that help the Netherlands move forward, including the BROloket. You improve existing features, add visualizations, and develop new applications. Your work will be diverse: from information systems to permit applications. Prefer to focus on databases? Then you’ll bridge relational and NoSQL technologies for migrating old and developing new databases.

Your home base is one of the two development teams of the BRO, part of the GeoData & IT department of the Geological Survey of the Netherlands. You’ll work closely with developers, testers, product owners, and end users. Ask anyone—they’ll agree: you’ll join a great team that works hard and supports each other. Your Scrum team is self-managing, and you actively collaborate on questions and ideas.

Read more about TNO Geological Survey of the Netherlands

You enjoy working in an Agile environment and take responsibility as a team to achieve the best results. Teamwork requires strong communication skills—in both Dutch and English—since TNO is an international organization. You are also familiar with working under architecture and have an interest in geodata and geo-ICT.

You also bring:

• A bachelor’s or master’s degree in Computer Science or equivalent.
• Over 5 years of experience with Java/JEE and solid knowledge of XML/XSD, SOAP, and JSON. Experience with web frameworks like Angular is a plus, as is knowledge of Quarkus.
• Experience with Kubernetes, Docker, Microservices, MicroProfile, JPA, REST, and Jackson.
• Knowledge of and experience with automated testing (JUnit, Mockito, SOAPUI/ReadyAPI), tools (Maven, Git), and the development pipeline (Sonar, GitHub).
• Experience with GIS products and Postgres/PostGIS is a plus.
• Experience creating mock-ups and demos.
• Good understanding of the Dutch and English language.

Challenging and varied work with a real impact. And plenty of opportunities as, at TNO, you are in charge of shaping your career. We offer a gross monthly salary between €4.473,- and €7.406,- (based on your knowledge and experience), 8% holiday pay, a 13th month bonus of 8.33% and a flex budget (5.58% + € 180). In addition, you will be given every opportunity to develop yourself.

TNO offers optional employee benefits, enabling you to tailor your benefits package to match your personal situation. You may also expect:

• An extremely professional, innovative working environment where colleagues are leading experts in their field.
• The opportunity to attend courses, workshops and conferences, and to receive training and coaching based on your needs.
• 33 days annual leave on a full-time basis.
• An employer that values and encourages diverse talent, with initiatives like the Female Leadership Program, our Rainbow Community and round tables on inclusion topics.
• We offer a comprehensive and flexible mobility plan that also includes full compensation for public transportation for commuting and business travel.
• Great social events with your team and other TNO colleagues. That’s how you will get to know a lot of people really quickly.
• Flexible working hours, the possibility to work parttime (32 of 36 hours) and the possibility of working from home.
• Extensive relocation package for international candidates.
• A good pension scheme.

Read more about tailoring your benefits package.

At TNO, we innovate for a healthier, safer and more sustainable life. And for a strong economy. Since 1932, we have been making knowledge and technology available for the common good. We find each other in wonder and ingenuity. We are driven to push boundaries. There is all the space and support for your talent and ambition. You work with people who will challenge you: who inspire you and want to learn from you. Our state-of-the-art facilities are there to realize your vision. What you do at TNO matters: impact makes the difference. Because with every innovation you contribute to tomorrow’s world. Read more about TNO as an employer.

At TNO we encourage an inclusive work environment, where you can be yourself. Whatever your story and whatever unique qualities you bring to the table. It is by combining our unique strengths and perspectives that we are able to develop innovations that make a real difference in society. Want to know more? Read what steps we are taking in the area of diversity, equity and inclusion.

Please apply before the 21st of September, 2025. The selection process comprises two interview rounds. The preliminary interview takes place on the 1st and 3th of October, 2025. The second interview round has been scheduled for the 14th of October, 2025. In a final meeting we will discuss the terms of employment and your tailored benefits package. We aim to finalize the entire process within four weeks.

The selection process may include an online assessment and a reference check.

A certificate of Conduct (VOG) is required before starting a new job at TNO.