Job 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.

About the role

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In the frame of its product development (Electric Propulsion System and Modular Battery Pack), H55 is searching for a senior embedded software engineer.


Within a multi-disciplinary team, you will be responsible for the software development and verification, ensuring that the design implementation meets the required needs, safety and reliability objectives.


You will report directly to the Software Team Leader.

What you'll do:

Define and shape software architecture that balances real-time constraints, hardware integration, and long-term maintainability. Develop and review of software requirements, architecture, and code (C, C++, Python). Drive continuous integration & process automation with Jenkins. Ensure rigorous documentation and compliance across the full development lifecycle. Manage data and deliverables in line with DO-178C methodologies and configuration management standards. Maintain certification framework and lead project level discussion with certification authorities (EASA)

Your Profile

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Bachelor or Master degree in the relevant domain Sound experience in embedded software development in aerospace domain, verification background is a plus. Experience with following languages : C, C++, Python Demonstrated ability to follow through and bring projects to completion Target-oriented, with analytic problem-solving capabilities and communication skills Capacity to prioritize, manage time effectively and multi-task Fluency in English (oral and written), French an asset.


Will be an advantage, but not a must:Experience with AI-powered tools Experience in software verification: Rapita RVS, Polyspace Experience in continuous integration: Jenkins Experience in requirement management: CodeBeamer or other Experience with Model-Based Design (Mathworks)

What we offer

An amazing work Location in Sion, Valais in the heart of Swiss Alps Highly dynamic, multicultural environment where you'll grow, learn, and take on ambitious challenges in shaping the future of Electric Aviation with one of the industry's leading innovators.

We hope this role sounds exciting and could be your next step, if so follow the steps to apply, we are looking forward to receiving your application.

H55 is an equal opportunity employer and welcomes applications from all qualified individuals regardless of race, 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.




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