Overview H55 is the technological spin-off of Solar Impulse, working to make aviation clean, safe, and affordable. The company develops propulsion and energy storage solutions that are modular, lightweight, and certifiable. H55 has integrated and flown 4 electric airplanes, and has been selected by Pratt & Whitney Canada to provide the battery pack for its regional hybrid-electric flight demonstrator.
About The Role
In the frame of its product development (Electric Propulsion System and Modular Battery Pack), H55 is searching for a senior embedded software engineer. You will be part of a multidisciplinary team and responsible for software development and verification to ensure that the design implementation meets required 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 software requirements, architecture, and code (C, C++, Python)
Drive continuous integration and 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 discussions with certification authorities (EASA)
Your Profile
Bachelor or Master degree in the relevant domain
Solid experience in embedded software development in the aerospace domain; verification background is a plus
Experience with C, C++, Python
Demonstrated ability to follow through and bring projects to completion
Target-oriented with analytical problem-solving, good communication skills
Ability to prioritize, manage time effectively, and multi-task
Fluency in English (oral and written); French an asset
Nice to have
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, at the heart of the Swiss Alps
A highly dynamic, multicultural environment where you’ll grow, learn, and tackle ambitious challenges in shaping the future of Electric Aviation with one of the industry’s leading innovators
EEO
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 decisions to hire, promote, discipline, or discharge, will be based on competence, performance, and business needs.
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