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H55

Process and Prototype Technician

Join H55 in Sion, Switzerland as a Process and Prototype Technician. Build and test aerospace prototypes, support manufacturing process development, and work in a dynamic team shaping electric aviation. Enjoy a prime Alpine location and a multicultural environment.
H55
H55
Sion, Switzerland On-site Full time UTC+01:00

H55

Company Overview

H55 SA

Lausanne, Switzerland

2017

Business Model

Aerospace and Electric Aviation

Development of electric propulsion systems for aircraft.

Sales of electric propulsion systems and related technologies.

Locations & Geography

Switzerland, France, Germany, Italy, and the United States.

Company Culture

Their mission is to accelerate the transition to sustainable aviation through innovative electric propulsion technologies.

They promote a collaborative and innovative work environment focused on sustainability.

They offer training and development programs to enhance employee skills in electric aviation technologies.

Activities & Projects

They are currently working on the development of the H55 electric propulsion system for light aircraft.

They have introduced a modular battery system designed for aviation applications.

They focus on reducing carbon emissions in aviation through electric propulsion solutions.

Career Opportunities

Typical job openings include engineering roles, project management, and research positions.

They offer competitive salaries, flexible working hours, and opportunities for professional growth.

Contact Information

LinkedIn

Careers at H55 SA


Last updated on Feb 26, 2026 | Report an issue

Job Description

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.

H55 is financed by a reputable group of investors from Silicon Valley and Switzerland, and as such, is well positioned for its next stage of its development. The company's short-term priorities include building up out of engineering team, putting into place production facilities, and creating a north American subsidiary.

About the role

Process and Prototype technician will join our Manufacturing team and report to the Head of Production Organisation.
The role focuses on building, testing, and refining prototypes while working closely with engineers to implement and optimize manufacturing methods.

The main mission will be:

  • Build and assemble prototypes of aerospace components and subsystems (energy storage system).
  • Support development and validation of manufacturing processes together with process engineers.
  • Operate and set up machines and equipment used in production.
  • Prepare materials and tooling required for experimental builds and process trials.
  • Assist in debugging manufacturing processes and identifying production issues.
  • Collect and record process data, including parameters, results, and observations during testing.
  • Support process trials and experiments to evaluate materials and manufacturing methods.
  • Maintain detailed documentation and logs for prototype builds and process tests.
  • Ensure proper handling of materials and compliance with safety procedures.
  • Collaborate with engineering, production, and quality teams during development and validation phases.

Your profile

  • 3-5 years of experience in the similar role.
  • CFC in polymechanics, micromechanics, manufacturing, materials or equivalent.
  • Hands-on experience with manufacturing processes and machine operation.
  • Good understanding of materials used in engineering applications (metals, composites, polymers, etc.).
  • Experience in prototype fabrication, assembly, and testing.
  • Ability to follow technical drawings, work instructions, and engineering documentation.
  • Strong attention to detail and documentation.
  • Proficiency in English, French is a plus.

What we offer

  • An amazing work Location in Sion, Valais in the heart of Swiss Alps.
  • A highly dynamic and multicultural environment where you can grow and learn by working on ambitious challenges to shape the future of Electric Aviation.
  • We offer a position which contributes to valuable and impactful work in a stimulating an international environment

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.

Apply now

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About the role

March 20, 2026

Full time

Company

March 20, 2026

On-site

Energy Storage , Hydrogen

H55

h55.ch

  •  Sion, Switzerland

3-5 years

UTC+01:00