Senior Mechanical Engineer

We are seeking a Senior Mechanical Engineer to join our R&D team in Geneva. In this hands-on role, you will design, validate, and continuously improve mechanical enclosures and subsystems that integrate optical and electronic components for our quantum products. You will take ownership of mechanical solutions from early prototyping through to industrialized product release, with a strong focus on delivering compact, robust, and cost-effective designs. Your work will ensure compliance with dimensional, thermal, and manufacturability requirements, including for highly demanding applications such as cryogenic systems.

Responsibilities

Own mechanical design from prototype to industrialised product, including CAD documentation, assembly bring-up, and validation testing; Drive thermal management (heat sinking, conduction/convection, interfaces and materials), dimensional stability, and manufacturability through design, simulation, and optimization, working closely with cross-functional teams and suppliers; Perform thermal simulation to predict temperatures, gradients, and heat flows; correlate models with lab measurements and iterate designs and their optimization accordingly; 3D modelling and documentation, engineering calculations and simulations, and hands-on testing to validate thermal dissipation and mechanical performance; Collaborate closely with optical, electronic, and system engineers to optimise interfaces and block specifications; Engage with external suppliers to prototype and manufacture parts efficiently; Help improve design practices, promote a rigorous engineering approach, and support multiple projects as a mechanical subject-matter expert

Requirements

Bachelor’s or Master’s degree in Mechanical Engineering, Microtechnology, or equivalent; at least five years of relevant experience in mechanical design and product development; hands-on experience designing with sheet metal and/or machined parts; strong ability to develop thermal dissipation solutions for compact systems; rigorous, organized, and proactive; able to work independently while collaborating effectively in a multidisciplinary and Agile environment; strong communication skills; fluency in English; solid mechanical engineering foundation with proven experience delivering compact, industrial-grade designs; structured, collaborative engineer with hands-on approach to validation; knowledge of applicable norms and compliance requirements, including EMC and electrical/product safety aspects; employment contingent on U.S. export control requirements, including verifying U.S. Person status or obtaining necessary license

Nice to have

Familiarity with cryogenic systems is an advantage; French is considered a plus; Experience with compact thermal management and exposure to cryogenic constraints are strong assets

Benefits

comprehensive medical, dental, and vision plans; matching 401(k); unlimited PTO and paid holidays; parental/adoption leave; legal insurance; home technology stipend