Cleanroom Technician for Space Optics

As a Cleanroom Technician at cosine you help build the advanced optical components that will power future space missions. Working at the intersection of precision engineering and space exploration, you handle and inspect ultra-sensitive silicon components that may ultimately become part of a telescope operating hundreds of thousands of kilometres from Earth.
This is a role for someone who enjoys working with their hands, takes pride in precision, and understands that exceptional quality is achieved through attention to the smallest details. Every component you touch has the potential to become part of a space instrument that will operate far beyond Earth for years to come.

In this role you will:

• Work extensively in a state-of-the-art cleanroom environment, handling delicate and high-value silicon components
• Perform inspections and quality checks on silicon plates using standardized procedures and advanced equipment
• Support the preparation, stacking and assembly of optical components for space applications
• Accurately document inspection results, process data and quality findings according to established procedures
• Collaborate closely with engineers, scientists and quality specialists to continuously improve processes and product quality
• Take ownership of your work area and contribute to maintaining the highest cleanroom, quality and safety standards 

We are looking for candidates with the following qualifications:

• MBO or HBO level education, preferably in a technical, laboratory or manufacturing-related field
• A strong sense of responsibility and commitment to delivering high-quality work
• Excellent attention to detail and manual dexterity for handling fragile and precision-engineered components
• Curiosity and a willingness to learn and understand complex technologies and processes
• Experience in a production, cleanroom, medical, pharmaceutical or other quality-driven technical environment is a strong advantage
• Good communication skills in English; Dutch is considered a plus
• Affinity with technology, innovation and the space sector

At cosine, we highly value our employees, and we will support your professional and personal development. We also provide our employees with:

• A unique, international working environment at the intersection of physics and engineering
• A competitive salary in the range of €2,850 and €3,100 gross per month excluding holiday allowance
• 27 days of annual leave (based on full-time employment)
• Annual bonus based on personal and company performance
• Hybrid working options, including the possibility to work partially from home
• Company bicycle and fitness plans
• A personal development budget 

cosine transforms high-stakes measurement challenges into scalable, real-world solutions.

What sets cosine apart is its integrated approach, linking insight, science, and engineering to deliver solutions that work in the real world, enable science and make an impact for humanity. Backed by over 25 years of heritage, expertise and deep systems thinking, cosine guides partners from defining the real need to deploying reliable, precision-built technologies that enable progress across space and planet.

What makes cosine a unique place to work is that your work goes end-to-end: from concept and design to building, testing, and delivering hardware that actually flies in space. You work in small, highly skilled teams where you have real ownership and impact, alongside experts in optics, physics, nanofabrication, and systems engineering.

cosine is committed to providing an inclusive and equal opportunities work environment where everyone can thrive. As a proud member of the Women in Aerospace community, we recognise the importance of diversity, inclusion, and equal opportunity in the workplace.