Electronics Engineer | Space Missions at cosine · Sassenheim

Your (space) mission

As the Electronics Engineer at cosine you play a key role in developing the electronic subsystems that power, connect and control advanced optical payloads for space missions. You translate system requirements into reliable electronic designs and work closely with multidisciplinary teams to bring hardware from concept through integration and verification. By combining technical expertise with a pragmatic engineering approach, you help deliver mission-critical electronics that enable Earth observation, environmental monitoring, defense-related remote sensing and planetary science missions.

Tasks & responsibilities

In this role you will:

• Define and develop electronic subsystems and architectures for optical payloads, translating system requirements into robust hardware designs, interfaces and technical specifications
• Take ownership of electronic subsystem developments throughout the project lifecycle, working closely with systems, optical, mechanical and software engineers
• Drive procurement and supplier interactions for electronic components, assemblies and subsystems, including technical alignment, trade-off analyses and make-or-buy assessments
• Support integration, verification and environmental testing activities, ensuring electronic hardware meets performance, reliability and mission requirements
• Contribute to technical reviews, risk assessments and continuous improvement initiatives across development projects

Your profile

We are looking for candidates with the following qualifications:

• A Master's degree in electronics engineering, electrical engineering, avionics, aerospace engineering or a related field
• Proven experience in electronics development for aerospace, space, defense or other high-reliability applications
• Experience designing, developing and validating electronic hardware such as power electronics, mixed-signal electronics, control electronics, sensor interfaces or data handling systems
• Familiarity with supplier management, procurement processes and industrialization of electronic hardware
• Ability to prepare and review technical documentation such as specifications, interface control documents and verification plans
• A proactive and pragmatic engineering mindset, with strong communication skills and the ability to operate effectively in multidisciplinary teams

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
• The opportunity to deliver end-to-end solutions in autonomous project teams, in close collaboration with customers
• A competitive salary with an annual bonus based on individual and company performance
• 27 days of annual leave (based on full-time employment)
• Hybrid working options, including the possibility to work partially from home
• Company bicycle and fitness plans
• A personal development budget
• 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.