Software Tester

At S[&]T we contribute to a safer life on Earth by translating space data into valuable and actionable insights. With this, we help organizations, governments and commercial entities to strengthen their information position and thereby improve their decision-making. We focus on 4 domains: Space & Science, Defence & Security, Environment & Sustainability and the High-Tech Industry. We control all levels of the data value chain from data source to user applications, and apply our expertise within our innovations, customer projects and talent acquisition services. Our headquarters are in Delft, The Netherlands and we have two satellite offices in Oslo, Norway and Rome, Italy with a total of 125 experts employed at S[&]T.

About the role:

Are groundwater levels sufficient to support future drinking water needs? Is the soil stable enough for large-scale construction projects? Which areas are most suitable for storing renewable energy? Reliable information about the subsurface is essential for answering complex societal and environmental challenges.

As a Software Tester, you will be a key member of an Agile development team responsible for developing and maintaining critical data-driven applications that support the collection, management, and distribution of large-scale geoscientific and environmental information. You will help elevate the organization's testing capabilities while contributing to solutions that support informed decision-making and sustainable development.

What will you do?

You will play a vital role in ensuring that the applications we develop are reliable, high-quality, and fit for purpose. Working within an Agile development team, you will use your expertise to improve software quality and strengthen testing practices across the organization.

In your daily work, you will collaborate closely with developers, product owners, fellow testers, and other stakeholders. You will design, execute, and maintain both manual and automated tests, ensuring new functionality performs as expected while safeguarding the stability of existing systems. Your forward-thinking approach enables you to develop effective testing strategies that support long-term product quality.

You will work with tools such as ReadyAPI, Playwright, and Groovy to automate testing processes and provide actionable feedback that helps teams deliver high-quality software efficiently.

Beyond hands-on testing, you will actively contribute to improving quality assurance practices and fostering a strong quality-focused culture. Working alongside senior colleagues, you will help define testing standards, guide best practices, and ensure every release meets established quality requirements.

What we expect from you:

You are naturally curious and passionate about delivering high-quality results. You enjoy working in multidisciplinary teams and can communicate technical concepts clearly to both technical and non-technical audiences. You have a strong eye for detail while maintaining focus on broader business objectives.

You take initiative, embrace continuous improvement, and inspire others through your commitment to software quality and test automation. You are proactive, well-organized, and able to remain effective under pressure. You continuously seek opportunities to improve processes, tooling, and ways of working.

What you bring:

• A completed Bachelor's or Master's degree, preferably in Computer Science, Software Engineering, or a related field. Experience with geospatial, environmental, or scientific data systems is considered an advantage.
• At least 5 years of experience as a tester within Agile software development teams.
• Demonstrated experience with test automation, preferably using ReadyAPI, Playwright, and Groovy.
• Experience developing test strategies, test plans, and quality assurance approaches.
• Familiarity with testing APIs (SOAP and REST) and modern web applications.
• Strong communication skills in both Dutch and English.

Interested? Then click to apply or send your CV and motivational letter to recruitment@stcorp.nl.

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Please note that if you do not hear back from us within 10 days of your application, you may assume that we have selected another candidate we would like to interview for this position. We do our best to get back to you individually, however, due to a high volume of responses, it can be that we have not been able to reject your application in person.

We kindly request that recruitment agencies do not contact us regarding this vacancy. We are not seeking assistance and will not be liable for any fees or charges associated with unsolicited CVs or candidate introductions. Any candidates submitted by agencies without prior written agreement will be considered our direct applicants and may be employed without obligation or fee.