Cleanroom Operator for Space Optics

Cosineinnovations; Netherlands; Hybrid; EUR 32,000 - 42,000; Full time

Benefits offered by this job

27 days of annual leave

Annual bonus

Hybrid working options

Company bicycle and fitness plans

One-year contract with long-term

Job summary

cosine is seeking a Cleanroom Operator to support the assembly and inspection of ultra-sensitive silicon components for space missions.

You will work in a state-of-the-art cleanroom in the Netherlands, handling high-value parts and documenting results with precision. This role offers hybrid working options, a one-year contract, and opportunities for long-term collaboration within an international environment.

Qualifications

• Education at MBO or HBO level in a technical, laboratory or manufacturing-related field.
• 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 willingness to learn and understand complex technologies and processes.

Responsibilities

• 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.

Skills

Attention to detail

Manual dexterity

English communication

Curiosity

Education

MBO or HBO level education in technical/lab/manufacturing

Job description

As a Cleanroom Operator 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.

Tasks & responsibilities

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

Your profile

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

What we offer

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
• 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
• Initial one-year contract, with the aim of long-term collaboration

About cosine

Founded in 1998, cosine is a world-leading developer of space instrumentation and measurement systems, making the invisible measurable and the complex actionable.
Its expertise spans High-Energy Optics, including optics developed for ESA’s future NewAthena X-ray observatory, as well as remote sensing solutions for Earth Observation and planetary science.
With over 25 years of experience and advanced cleanroom and assembly facilities across the Netherlands, Germany, and Italy, cosine brings deep scientific and engineering expertise to some of the most demanding missions in space and on Earth.
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.