Junior Research Software Engineer for Sustainability Science - Full Stack
Leiden Univ · Netherlands ·
- Work mode
- Hybrid
- Seniority
- Junior
- Employment
- Contract
- Category
- Fullstack
- Company size
- 1000+
- Salary
- EUR 3,708 – 5,057 / month
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Junior full-stack research software engineer at Leiden University's Institute of Environmental Sciences, building dashboards, web apps, APIs, and reproducible data pipelines for sustainability and circular-economy research tools. Core stack: Python, JavaScript/TypeScript, React, D3/Plotly, FastAPI/Django/Flask, Docker.
Junior Research Software Engineer for Sustainability Science - Full Stack Job Description Junior Research Software Engineer for Sustainability Science - Full Stack Vacancy number: 16684 Job type: Academic staff Contract hours min: 38 Contract hours max: 38 Location: Leiden Applying is possible up to and including: 31 December 2026
The Institute of Environmental Science CML at Leiden University is looking for a motivated Junior Research Software Engineer (RSE) with experience in full-stack development, data visualization, and modern software engineering practices to turn scientific insights into reliable and user-friendly software. In this role, you will help design, build, and maintain the next generation of industrial ecology research tools that support sustainability, circular economy analysis and decision making, as well as reproducible science across the institute. You will work closely with researchers to help create dashboards, APIs, and visual analytics that communicate scientific results to academic users, policymakers, and the wider public. Your contributions will directly empower transparent, open, and reproducible research within for sustainability decision making.
In your role, you will work closely with a Senior Research Software Engineers, Principal Investigators and PhDs to strengthen the scientific software engineering basis of our institute. Specifically, you will be responsible for tasks such as:
Leiden University is situated between Amsterdam (36 km) and The Hague (15 km) and was founded in 1575, making it the oldest university in the Netherlands. It houses around 35,000 students originating from 112 nationalities, facilitated by approximately 8,000 staff.
The Institute of Environmental Science (CML) at Leiden University offers a vibrant and supportive community of scientists committed to the challenges of sustainability. CML distinguishes itself for its attention to professional development in coordination with the interests of its scientists. As such, there are plenty of opportunities to learn new skills, expand your knowledge, collaborate across disciplines, and experiment in a friendly environment fully embodying academic freedom across all career levels.
The core focus of CML is to perform research and education in the interdisciplinary field of Environmental Sciences. CML focuses on the sustainable use of natural resources and preservation of natural capital and biodiversity. CML has a culture of mutual support and collaboration between researchers. CML has two Departments: Industrial Ecology (CML-IE) and Environmental Biology (CML-EB). Presently, about 150 fte (including postdocs and PhDs) are employed at CML. CML further collaborates with TU Delft and Erasmus University in the Leiden-Delft-Erasmus Centre for Sustainability (LDE-CfS), and with the Naturalis Biodiversity Centre.
The Institute of Environmental Sciences (CML) is positioned in the Faculty of Sciences. The Faculty of Science is a world‑class faculty where staff and students work together in a dynamic international environment. It is a faculty where personal and academic development are top priorities. Our people are committed to expanding fundamental knowledge by curiosity and looking beyond the borders of their own discipline; their aim is to benefit science and to make a contribution to addressing the major societal challenges of the future. The research carried out at the Faculty of Science is very diverse, ranging from mathematics, information science, astronomy, physics, chemistry and bio‑pharmaceutical sciences to biology and environmental sciences. The research activities are organized in eight institutes. These institutes offer eight bachelor’s and twelve master’s programmes. The faculty has grown strongly in recent years and now has more than 2.800 staff and almost 6000 students. We are located at the heart of Leiden’s Bio Science Park, one of Europe’s biggest science parks, where university and business life come together.
For more information, see www.universiteitleiden.nl/en/science . Information about CML can be found at www.universiteitleiden.nl/en/science/environmental-sciences .
We offer an initial one‑year contract, with an option to extend to a permanent contract based on performance, following the pay scale 9 in accordance with the Collective Labour Agreement for Dutch Universities. Salary ranges from € 3.708 to € 5.057 gross per month based on a full‑time position.
At our institution, we believe in flexibility and work‑life balance! With a full‑time position (38 hours per week), you are entitled to 232 vacation hours per year, which is equivalent to 30.5 vacation days (based on a 38‑hour work week). If you value flexibility, you have the freedom to adjust your working hours. For example, you could choose to work 40 hours per week, earning extra compensation hours. Alternatively, if you prefer a shorter work week, you can work 36 hours per week by using some of your vacation days to create more time for yourself. You’ll work closely with your supervisor to tailor your schedule in a way that suits both your needs and the team’s.
In addition, we offer a comprehensive benefits package, including:
We are committed to offering a flexible, supportive, and rewarding work environment, designed to help you grow both professionally and personally. For more information about the working conditions, please visit: https://www.universiteitleiden.nl/en/working-at/job-application-procedure-and-employment-conditions
At the Faculty of Science, we value inclusiveness and strive for a diverse community with equal opportunities for all. We give full support to our staff in achieving their potential to become independent academic researchers and teachers. For more information about our policy on diversity and equality please go to the diversity page on our website: https://www.universiteitleiden.nl/en/dossiers/diversity
Female researchers are also welcome to join the Researchers In Science for Equality network of the Faculty of Science (rise.nu).
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