Electronics / Avionics Engineer

Your (space) mission

As the Electronics / Avionics Engineer at cosine you play a key role in shaping the electronic backbone of high-performance optical payloads that operate at the frontier of space. You help define and realise robust avionics architectures that enable Earth observation, environmental monitoring, defence-related remote sensing and planetary science missions. From concept to procurement and integration, your work ensures that every electronic subsystem performs reliably in the most demanding space environments. You translate complex system needs into practical, buildable and procurable solutions that directly contribute to mission success and high-impact decision-making from orbit.

Tasks & responsibilities

In this role you will:

• Define and support the electronics and avionics architecture of optical payloads and translate system requirements into robust electronic concepts, interfaces and specifications
• Drive procurement activities for electronic subsystems, including supplier selection, technical alignment, quotations and make-or-buy decisions
• Act as the technical interface with suppliers and subcontractors, ensuring alignment on design, quality, delivery and performance expectations
• Support engineering reviews, including requirements, design, test readiness and manufacturing data assessments
• Contribute to system-level integration, verification and test of electronic subsystems across development and production phases
• Support risk management activities including obsolescence analysis, component availability and procurement planning

Your profile

We are looking for candidates with the following qualifications:

• A Master’s degree in electronics engineering, avionics, aerospace engineering, electrical engineering or a related field
• Experience in electronics or avionics development for aerospace, space, defense or other high-reliability systems
• Strong understanding of electronic architectures including power, data handling, control electronics and sensor interfaces
• Experience with procurement, supplier management or sourcing of electronic components, boards or subsystems
• Ability to write and review technical documentation such as specifications, interface documents and supplier statements of work
• A structured, pragmatic and delivery-oriented mindset with strong communication skills across 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
• 20 days of annual leave (based on full-time employment)
• 13th month salary payment
• Hybrid working options, including the possibility to work partially from home
• A personal development budget

About cosine

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

Founded in 1998 and headquartered in Sassenheim, the Netherlands, cosine is a world-leading developer of space instrumentation and measurement systems. Our expertise spans Silicon Pore Optics — including optics developed for ESA's NewAthena X-ray observatory — as well as hyperspectral remote sensing solutions for Earth Observation and planetary science. With over 25 years of experience and facilities across the Netherlands, Germany, and Italy, cosine brings deep scientific and engineering expertise to some of the most demanding missions in the space sector.

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.