Mechanical Engineer / Mechanical Engineeress

H55 SA - April 20, 2026

About H55

As the technological spin-off of Solar Impulse, the first electric airplane to fly around the world, H55's mission is to make aviation clean, safe, and affordable. The company’s strengths and competencies lie in developing propulsion and energy storage solutions that are modular, lightweight, and certifiable. H55 is reaffirming its position as a key enabler in the electric aviation market by having integrated and flown four electric airplanes.

About the Role

In the context of its product development (Electric Propulsion System and Modular Battery Pack), H55 is seeking a Mechanical Design Engineer to work on the various components of the system, with a particular focus on its Battery Module.

Your Responsibilities

As a Mechanical Design Engineer at H55, your primary mission will be to craft cutting-edge products integral to our electric propulsion system. Your responsibilities will include:

  • Designing lightweight, manufacturing-optimized, and cost-efficient products, focusing on the Battery Module.
  • Ensuring designs adhere to regulatory Aerospace agency rules, with a concentration on industry safety and performance standards.
  • Substantiating your designs with robust engineering practices and calculations.
  • Reviewing drawings, schematics, bills of material, and other documentation necessary for manufacturing, testing, installation, and commissioning of products.
  • Defining tests to ensure the correlation and advancement of simulation models and technology derisking & validation.
  • Monitoring and managing problem reports and change requests.
  • Providing essential support to product production by analyzing deviation requests among others.
  • Supporting suppliers by addressing technical questions under general design guidelines.

Your Profile

  • A university degree with 4-7 years of experience in designing and validating mechanical components and assemblies, particularly with plastics and/or composite materials.
  • Experience in the mechanical design of Battery modules is a significant advantage.
  • Familiarity with Airworthiness Certification Specifications (e.g., EASA CS-23 or FAA Part 23) and industry standards is preferred; experience in another highly regulated domain is acceptable.
  • Proficiency in CAD programs like Autodesk Inventor.
  • Proven experience in FEA is appreciated, with mastery of the Ansys bundle considered an asset.
  • Knowledge of manufacturing processes focusing on machining and plastic molding.
  • Hands-on experience in prototyping, testing, and manufacturing.
  • A motivated self-starter with a keen eye for organization and precision.
  • A strong commitment to quality.
  • Capability to work both independently and collaboratively in multidisciplinary teams.
  • Fluent in both written and spoken English and French.
  • This role may require rare travel to our headquarters in Switzerland.

Join Us

We offer a highly dynamic and multicultural environment where you can grow and learn by tackling ambitious challenges that shape the future of Electric Aviation. If this role excites you and aligns with your career goals, apply online using the form below. Only applications matching the job profile will be considered. We look forward to receiving your application!

Location : Sion
Country : Switzerland

Application Form

Please enter your information in the following form and attach your resume (CV)

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