Senior Mechanical Engineer

About us
Xeryon is a fast-growing and innovative Leuven-based scale-up that focuses on the development and production of groundbreaking nano-motors. Supported by strong investors, we are determined to conquer the market and have a global impact. Today we produce 2,000 motors per year and our goal is to go to hundreds of thousands of motors per year within a few years. We are looking for an experienced Mechanical Engineer to join our team and help us achieve our ambitious goals. Job Summary: As Senior Mechanical Engineer at Xeryon, you are the mechanical engineering expert in a fast-growing scale-up. You set the standard for every step of our engineering process: specification and concept, simulation, prototyping and validation, a robust and manufacturable series design, and control over its lifecycle. You raise the level of the whole team by defining how we design, verify and manage our products.

Key Responsibilities
You join the mechanical engineering team within R&D. Working closely with our multidisciplinary engineering team, you develop new motion products based on our patented ultrasonic piezo technology and improve existing ones.
• Precision product development: Design compact motion products based on our ultrasonic piezo motors, from the technical requirements definition through 3D modelling to production-ready part and assembly drawings with sound GD&T. Our products integrate many precision functions in a very small volume, so every design means balancing tight tolerances, interacting mechanical effects and limited space. Contribute to technology development for future product generations.
• Simulation & analysis: Use FEA (structural, modal, thermal) and analytical models to predict stiffness, dynamics and thermal drift, gain early design insights and correlate the results with test data.
• Hands-on prototyping: Assemble and test your own prototypes to connect the CAD model to the real world. Get a true feel for our products and feed what you learn back into the design.
• Reliability support: Support our reliability engineering with your design expertise. Contribute to FMEAs and design-review risk discussions, help define reliability requirements, acceptance criteria and test plans, and review lifetime and validation test results. Drive root-cause investigations of mechanical failures and turn the findings into design improvements.
• Engineering standards: Set the standard for every step of the engineering process. Take ownership of our SOPs and work instructions for the engineering design process and improve them, so that every design is developed, verified and released with consistent, traceable quality.
• Design data & lifecycle management: Maintain disciplined CAD/PDM data, BOMs and revisions. Drive a structured engineering change process, and own products from NPI through series production to end-of-life, together with our quality and operations teams.
• Customer projects: Support customer projects by analysing, testing and debugging complex mechanical systems. Engineer custom and OEM solutions, and act as technical counterpart in complex integration projects. Qualifications You are an experienced precision engineer who combines strong design intuition with analytical rigour. You enjoy fitting complex functionality into compact designs and think at system level about how mechanics, actuation and sensing interact. You have a hands-on mentality: you are as comfortable assembling and testing a prototype as behind the CAD screen. You know that a design is only finished when it is specified, verified, documented and producible at volume, and you like turning that know-how into clear standards for the whole team. You communicate clearly with colleagues, suppliers and customers alike.

Requirements:
• Master's degree in Mechanical or Electromechanical Engineering, or equivalent experience.
• At least 8 years of experience in mechanical product development in the precision mechanics or high-tech industry, including compact, complex products taken from requirements to series production.
• Strong 3D CAD and drawing skills, including GD&T and tolerance stack-up analysis.
• Experience with FEA and analytical modelling, including correlation with test data.
• Experience with PDM/PLM systems, revision control and engineering change management.
• Experience with design for manufacturing and assembly (DfMA), in close collaboration with suppliers.
• Hands-on experience assembling, testing and debugging prototypes and mechanical systems.
• Experience writing or improving engineering procedures such as SOPs, work instructions or design guidelines.
• Experience with piezo actuation, encoders or drive electronics is a plus.
• Fluent in English. Knowledge of Dutch is a plus.

What We Offer
• A dynamic and energetic work environment in a fast-growing scale-up company.
• Opportunities to grow into various roles across engineering, quality, production or sales roles.
• A chance to directly influence product development and customer experience.
• A supportive team culture focused on innovation, ownership, and continuous learning.
• Competitive salary and benefits tailored to your experience and growth potential. Ready to engineer the future of motion? If you are enthusiastic, driven, and ready to make your mark in precision engineering, we want to hear from you Apply now by sending your CV to jobs@xeryon.com. Following an initial screening, suitable candidates will be invited for an interview at our office in Leuven.