About the role

Our leading-edge expertise, software, and electronics enable organisations to make scientific breakthroughs, deliver state-of-the-art cancer treatments, develop healthcare innovations and bring clean fusion energy to the world.

In this role, you’ll help build software for complex medical devices—where integration, regulation, and reliability are non-negotiable. We’re looking for a senior engineer who prefers ownership over hand-offs: shaping system requirements and architecture, treating risk management as part of design, and driving work through verification & validation and commissioning. You’ll tackle multi-subsystem integrations and multiple software interfaces with medical-grade documentation and disciplined engineering processes.

Key tasks and responsibilities

• Design and develop software for medical systems (radiotherapy) and research systems (particle accelerators).
• Own the full lifecycle: requirements → architecture & design → implementation → verification & validation.
• Work on complex, multi-component architectures and integration across systems, dataflows, and workflows.
• Collaborate in a cross-functional team (software, testers, integrators, systems engineers) and act as a technical interface for international customers.
• Take ownership of software quality (tests, reviews, reliability) and drive solutions to completion.

Required qualifications and skills

• 5+ years of software engineering experience; strong OOP foundation (C++ preferred; Java/C# also welcome).
• A proactive, delivery-oriented mindset: comfortable working in less rigidly defined environments and driving clarity where needed.
• Proven experience delivering customer-facing solutions: understanding requirements, communicating clearly, and making sound technical decisions.
• Strong analytical skills, autonomy, and willingness to learn new technologies and domains.

Education

• B.Sc. in Computer Science, Electrical Engineering, or other related technical disciplines, or five years of related experience and/or training.
• Fluency in spoken and written English.

Bonus points if you have

• Experience with embedded / IoT / device-layer integration, PLCs/controllers, middleware or communication frameworks (e.g., MQTT).
• Experience in regulated environments (medical or similar), including technical documentation and disciplined engineering processes.
• Comfortable switching between architect and hands-on developer roles; strong system architecture & design patterns.

What we offer

• Employment contract for an indefinite period with a six-month probationary period.
• A work environment with flexible working hours and a hybrid work model.
• Plenty of personal and professional growth opportunities combined with a competitive and periodically updated salary tailored to your skills, experiences, and results.
• Interesting work full of challenges in an international working environment.
• Opportunities to work abroad.
• High-impact learning culture: regular in-house and external training sessions and a team of international professionals eager to help you grow.
• Many recreational after-work activities, additional health insurance (Specialists+), unlimited coffee, soft drinks, fruit, and other well-being goodies.
• Cosylab events (Teambuilding, New Year’s Party, Picnic … ).

Why join Cosylab?