Software Engineer (Open Source - 4TU.ResearchData)

Are you an enthusiastic software developer who wants to dive deep into reproducibility and research data and software workflows for machine learning and AI? Then we would love to meet you!

Job description
4TU.ResearchData is looking for an experienced Software Engineer to help strengthen and extend our repository for data and software. The 4TU.ResearchData repository uses in-house free and open source software called Djehuty. As part of our commitment to open science and the FAIR principles, we continuously work to improve the interoperability and reproducibility of data and software. Specifically for this purpose, we are seeking a Software Engineer who will mainly contribute to two projects funded by Open Science NL (part of NWO):

• Enabling FAIR for AI: Infrastructure for Transparency and Reproducibility of Research Software

This project aims to make research data and software easier to reuse, verify and build upon. At present, software shared alongside research outputs often lacks the context and metadata needed to fully reproduce results. To address this, the project will improve transparency, interoperability and long-term usability by enhancing Djehuty, the open source repository platform used by 4TU.ResearchData and Nikhef. This work will support researchers by providing clearer guidance and more robust tools for responsibly sharing, citing and maintaining software, especially software associated with ML/AI models. Key project outcomes will include criteria for a graded badge to assess the quality and reproducibility of data, software and models, a software reproducibility service, and improved deposit, curation and reproducibility workflows.

• Towards a community-driven and sustainable Research Software Directory (RSD):

The RSD is an open source platform that highlights the impact of research software using a broad range of qualitative indicators. This project aims to expand the RSD with a peer-review mechanism for software, improve curation support for communities and organisations, and link to ready-to-run cloud instances and reproducibility packages (being developed by 4TU.ResearchData) to stimulate software reuse.

In this role, you will collaborate closely with project partners from several Dutch institutions and work as part of the 4TU.ResearchData team at the TU Delft Library, contributing directly to the further development of Djehuty. You will coordinate development with other software engineers at 4TU.ResearchData to ensure alignment. You will also contribute to the maintenance and operation of the 4TU.ResearchData repository.

Your tasks and responsibilities:

• Guide and contribute to collaborative national projects, focusing on functionalities and workflows supporting reproducibility of software and AI/ML models;
• Research, design and implement solutions within the current architecture, extending functionalities where needed;
• Communicate design and implementation choices to project partners and the open source community, including updating documentation;
• Collaborate and coordinate development with project partners and the 4TU.ResearchData team to ensure alignment;
• Contribute to the maintenance and operation of the 4TU.ResearchData repository;
• Support other colleagues as needed.

About 4TU.ResearchData
4TU.ResearchData is a research infrastructure, community and training provider whose mission is to enable researchers from science, engineering and design disciplines to make a global impact with research data and software. We provide a trusted digital repository which support Findable, Accessible, Interoperable and Reusable (FAIR) data and software by offering curation, sharing, long-term access and preservation. The repository has a broad community of users and supporters who advance FAIR data and software practices. 4TU.ResearchData is governed and led by a consortium of four technical universities in the 4TU.Federation (TU Delft, University of Twente, TU Eindhoven and Wageningen University & Research) and is hosted by TU Delft.

Please note that this position is based in the Netherlands (working remotely from abroad is not possible).

Job requirements

• Strong proficiency in Python and its standard libraries;
• Proficiency with GNU/Linux, HTML/CSS, Javascript, Git;
• Full-stack web development awareness;
• Solid understanding of software engineering principles, including design, testing and version control;
• Comfortable working with complex systems, data workflows or research-oriented environments;
• Ability to translate requirements into technical solutions;
• Experience working with community-driven open source projects;
• Awareness of the FAIR principles;
• Good communication and team-working skills.

Desirable:

• Experience with research software, AI/ML workflows and model deployment;
• Familiarity with metadata standards, reproducibility frameworks and research data infrastructures;
• Experience contributing to or maintaining community-driven open source projects.

TU Delft (Delft University of Technology)
Delft University of Technology is built on strong foundations. As creators of the world-famous Dutch waterworks and pioneers in biotech, TU Delft is a top international university combining science, engineering and design. It delivers world class results in education, research and innovation to address challenges in the areas of energy, climate, mobility, health and digital society. For generations, our engineers have proven to be entrepreneurial problem-solvers, both in business and in a social context.

At TU Delft we embrace diversity as one of our core values and we actively engage to be a university where you feel at home and can flourish. We value different perspectives and qualities. We believe this makes our work more innovative, the TU Delft community more vibrant and the world more just. Together, we imagine, invent and create solutions using technology to have a positive impact on a global scale. That is why we invite you to apply. Your application will receive fair consideration.

Challenge. Change. Impact!

University Corporate Office – TU Delft Library
TU Delft Library is the largest technical-scientific library in the Netherlands, a physical and virtual meeting place. The Library helps to find valuable knowledge needed for education and research, and to publish and store the knowledge generated at TU Delft. We believe it is important that knowledge is easily accessible and freely available to everyone. In this way, knowledge can flow freely and TU Delft's knowledge can become valuable to others. The Library is also a place where everyone can study in peace and quiet. This fits in with our inclusive organisation. The Library has chosen three strategic themes to guide its daily activities. 1) Open Science. We make an important contribution to TU Delft's broad strategic programme "Open Science - Research and Education in the Open Era". 2) Visibility and impact. With our expertise and tools in the field of research data management, research intelligence and publishing, we increase the findability, visibility and impact of TU Delft knowledge. 3) Inspiring learning and working environment. Through stimulating programming, we show how freely available and reliable knowledge makes life richer. This makes the Library a place where you can find new ideas and insights.

https://www.tudelft.nl/en/library/

Conditions of employment

• Duration of contract is 3 years. Temporary
• A job of 32-40 hours per week.
• A salary based on Scale 11 of the CAO for Dutch Universities with a salary between €4728 - €6433 gross per month based on a fulltime contract (38 hours), plus 8% holiday allowance and an end-of-year bonus of 8.3%.
• An excellent pension scheme via the ABP.
• The possibility to compile an individual employment package every year.
• Discount with health insurers on supplemental packages.
• Flexible working week.
• Every year, 232 leave hours (at 38 hours). You can also sell or buy additional leave hours via the individual choice budget.
• Plenty of opportunities for education, training and courses.
• Partially paid parental leave
• Attention for working healthy and energetically with the vitality program.

Additional information
For more information about the job content, please contact Gabriela Kuhn at G.Kuhn@tudelft.nl. For information about the employment conditions, please contact Daniel Bangert at d.f.bangert@tudelft.nl

Application procedure
Are you interested in this vacancy? Please apply no later than 10 April 2026 via the application button and upload the following documents:

• CV (max. 2 pages)
• Motivational letter (max. 2 pages)

Both documents must be in English. You can address your application to Daniel Bangert.

Please note:

• You can apply online. We will not process applications sent by email and/or post.
• As part of knowledge security, TU Delft conducts a risk assessment during the recruitment of personnel. We do this, among other things, to prevent the unwanted transfer of sensitive knowledge and technology. The assessment is based on information provided by the candidates themselves, such as their motivation letter and CV, and takes place at the final stages of the selection process. When the outcome of the assessment is negative, the candidate will be informed. The processing of personal data in the context of the risk assessment is carried out on the legal basis of the GDPR: performing a public task in the public interest. You can find more information about this assessment on our website about knowledge security.
• Please do not contact us for unsolicited services.