Demo

Test Engineer

H55
Sion, MA Full Time
POSTED ON 11/23/2025
AVAILABLE BEFORE 2/19/2026

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.
  • Ideally 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 based systems is a strong asset.
  • Open-minded and co-operative
  • 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.

Salary.com Estimation for Test Engineer in Sion, MA
$80,183 to $93,478
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