Senior Precision Mechanical R&D Engineer (F/M/D)
First seen by Alion on Sep 18, 2026.
Facing the challenges of our time -Help us grow and be more impactful!
For more than three decades, CSEM has contributed to demanding European space missions through the development of precision mechanisms, scientific instruments and dedicated support equipment. Our work bridges applied research and flight-oriented hardware development, from early concepts to integrated and tested systems.
The Precision Mechanisms group of CSEM's Instrumentation Business Unit, based in Neuchatel, is looking for a Senior Precision Mechanical Engineer to strengthen its space hardware development activities. We are seeking an experienced, hands-on engineer who can rapidly take ownership of mechanical developments and contribute across the full lifecycle, from detailed design to assembly, integration, testing and technical problem solving.
Maximum duration contract of 2 years.
Your mission
You will play a key role in delivering precision mechanical hardware for demanding applications. From early concepts and requirements to assembly, integration, and verification, you will transform ideas into robust, manufacturable hardware. As a senior engineer, you will own mechanical work packages, coordinate subcontractors and suppliers, and solve practical engineering challenges throughout the development and qualification process.
Your responsibilities
- Design precision mechanisms, mechanical structures, optomechanical interfaces and custom test equipment. This includes 3D models, technical drawings, interface data, tolerances and manufacturing documentation.
- Prepare procurement specifications, select and coordinate suppliers and subcontractors. Define incoming inspection plans, acceptance criteria, and manage technical clarifications and non-conformances.
- Take technical ownership of mechanical work packages from concept selection through manufacturing, assembly, integration and testing.
- Prepare and execute assembly, integration, including work in cleanroom and contamination-sensitive environments.
- Prepare and execute performance and environmental test campaigns on-site and off-site.
- Contribute to risk analyses, design reviews, failure investigations and root cause analyses.
- Collaborate closely with multidisciplinary teams covering systems, optics, electronics, thermal engineering, analysis, quality and testing.
- Contribute to customer and partner exchanges, technical reviews, project documentation and proposal activities when required.
Your profile
Bachelor’s or Master’s degree in Mechanical Engineering, Microtechnology or a related field.
Know-how
Essential know-how
- Senior-level experience in the development, manufacture, assembly, integration and testing of precision mechanisms, with the autonomy to take ownership of complex mechanical developments and deliver workable hardware.
- Proven experience with 3D CAD and the production of high-quality technical drawings and manufacturing documentation.
- Practical experience of hardware integration, mechanical inspection, test preparation and execution.
- Experience in supplier and subcontractor coordination, including technical specifications, manufacturing follow-up and non-conformance handling.
- Sound understanding of tolerancing, materials, manufacturing processes and design for assembly in high-precision applications.
- Ability to communicate and document technical decisions clearly in a multidisciplinary and customer-facing environment.
Highly valued experience
- Hands-on experience with cleanroom assembly and contamination-sensitive hardware. This is a strong advantage for rapid operational contribution.
Nice to have
- Experience in the development of compliant mechanisms
- Knowledge of ECSS standards and space project development practices.
- Experience with mechanical simulation as part of design and verification activities.
- Experience with optomechanical systems, scientific instrumentation or custom ground support equipment.
- Experience contributing to formal project reviews and verification documentation.
- Machining skills (milling, drilling, lath).
Interpersonal skills
- Autonomous, organised and results-oriented, with a strong sense of technical ownership.
- Hands-on, pragmatic and comfortable moving between design work, supplier discussions, laboratory activities and testing.
- A collaborative mindset and the ability to work effectively with specialists from different engineering disciplines.
- Clear communication and technical writing skills, including the ability to explain decisions, risks and trade-offs.
- Curiosity, sound engineering judgement and a structured approach to solving unexpected hardware problems.
- Fluency in English and French.
CSEM mission and values
We believe in a future that is imagined, shared, and created TOGETHER.
At CSEM, we don’t just innovate, we envision technologies that shape tomorrow.
Since 1984, our purpose has remained constant: to harness science and technology for the benefit of society. Today, with over 650 people across Switzerland, we remain committed to our mission: to develop and transfer world-class solutions in digital technologies, precision manufacturing, and sustainable energy systems. In doing so, we empower Swiss industry to innovate and remain competitive.
Our strength is the excellence of our people. We believe that strong values support the successful development of our organization as well as the harmonious and balanced development of all our employees.
We are
- A unique place between research and industry at the cutting edge of new technologies
- An innovative, non-profit, and employee-driven company
- A dynamic, multidisciplinary, and multicultural environment
- A solar team focused on enabling solutions to energy challenges for a sustainable world
Working@CSEM means
- Being part of a passionate community
- Flexibility, attractive working conditions, and opportunities of development
- Benefit from a management style based on trust & feedback
Our recruitment process
- First contact with one or two of our engineers.
- HR interview to get to know you and explain what it is like to be part of the CSEM teams.
- You prepare a case and present to your future team members and top management (depending on the position assessment).
We are committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity.
We look forward to receiving your complete application file via (CV, cover letter, certificates & diplomas) our job page. Preference will be given to professionals applying directly.