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Senior Test Engineer

H55 Sion, Wallis, Switzerland

hybridfull-time
Posted Feb 19, 2026Apply by May 20, 2026
  • Role & seniority

    • Senior/lead test engineer in aerospace (7+ years experience)

    • Reports to Head of Aircraft Integration & Testing

    • Location: Sion, Switzerland; on-site, full-time

  • Stack/tools

    • Electrical/electronic system testing; test bench assembly/commissioning

    • Documentation: test procedures, reports, technical descriptions

    • Configuration management; coordination with internal teams and external suppliers

    • LabVIEW (or similar) knowledge is a strong asset

    • Safety-focused high-voltage testing

  • Top 3 responsibilities

    • Define test activities and strategies to enable V&V of the electric propulsion system

    • Execute/coordinate complex tests (electrical, mechanical, software, control, instrumentation); ensure safety and data quality

    • Create and maintain documentation; manage test assets and traceability; coordinate with in-house teams and external suppliers

  • Must-have skills

    • Degree in System/Aerospace/Power Electronics/Energy Systems (Bachelor+)

    • 7+ years in aerospace or other highly regulated domains

    • Experience in electronics and electrical system testing

    • High-voltage safety awareness

    • English fluency (written and spoken)

  • Nice-to-haves

    • French language skills

    • LabVIEW or similar test-automation systems

    • Strong cross-functional coordination and teamwork mindset

  • Location & work type

    • Sion, Switzerland; on-site

    • Full-time role with interaction across internal and external stakeholders

Full Description

About H55 As the technological spin-off of Solar Impulse, the first electric airplane to fly around the world, the mission of H55, is to make aviation clean, safe, and affordable. The company’s strengths and competencies lie in developing propulsion and energy storage solutions which are modular, lightweight, and certifiable. Having integrated and flown 4 electric airplanes, the Swiss start-up has been selected by Pratt & Whitney Canada to provide the battery pack for its regional hybrid-electric flight demonstrator. This recent announcement is a further illustration of H55’s position as a major enabler in the electric commuter market. At H55, you will work with a very forward-looking team who are changing the paradigms of air transportation. H55 is composed of highly experienced engineers, entrepreneurs and managers and is seeking like mind talented professionals who understand how to couple creativity and innovation with technical and business considerations. About the role The position will be based in the H55’s headquarters in Sion, Switzerland. This role will report to the Head of Aircraft Integration & Testing, and is primarily focused on the development of defining test activities, and strategies, to enable successful product demonstration (V&V) of the Electric propulsion system (at different periods of time you can be working with different components of the system). Specifically, your responsibilities will include Liaison with product and system development teams to capture test needs. Definition of appropriate test set-ups to provide test data in support of prototype development, qualification, verification and demonstration of Safety of Flight Test. The creation of documentation, including technical descriptions, test procedures and reports, as well as participating to test bench design. Executing complex tests involving electrical, mechanical, software, control and instrumentation elements, while maintaining safety as a priority. Coordination of test activities with both H55 in-house test teams and external suppliers. Management of external suppliers. Configuration management of test assets to ensure traceability of test activities. Assist test and development teams with trouble-shooting, debugging and lessons learnt activities. Track and log activities as required. Provide timely formal and informal status as required by project management. Your profile University degree (min. bachelor) in a relevant engineering discipline (System engineering, Aerospace engineering, Power Electronics, Energy Systems). Ideally you enjoy a role with a variety of aspects. At different times you may be involved in planning and coordinating, electrical/mechanical design, technical documentation, test bench assembly and commissioning or testing, as well as project coordination. 7+ years of experience in Aerospace industry or other highly regulated domain (Automotive,..) Experience in electronics and electrical system testing. Good awareness of the safety challenges associated with high voltage testing. Knowledge in the use and set up of Labview or similar based systems is a strong asset. Open-minded and co-operative Taste for team and project coordination and transversal collaboration. Fluency in English (oral and written), French an asset. Sounds interesting? We look forward to meeting you! At H55, you will work with a very forward-looking team who are changing the paradigms of air transportation. H55 is composed of highly experienced engineers, entrepreneurs and managers and is seeking like mind talented professionals who understand how to couple creativity and innovation with technical and business considerations. H55 is an equal opportunity employer and welcomes applications from all qualified individuals regardless of nationality, sex, disability, religion/belief, sexual orientation or age. All aspects of employment including the decision to hire, promote, discipline, or discharge, will be based on competence, performance, and business needs.

Test Activities DefinitionTest StrategiesProduct DemonstrationVerification and ValidationElectric Propulsion SystemTest Set-upsPrototype DevelopmentQualificationSafety of Flight TestTechnical DocumentationTest ProceduresTest ReportsTest Bench DesignElectrical TestingMechanical TestingSoftware Testingmulti-location

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