About H-55
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.
Your Role As an Electronic Hardware Engineer, you will contribute to the design, development, and verification of Electronic Control Board Assemblies (ECBA), with a focus on Battery Modules for next-generation Energy Storage Systems (ESS) .
Working within a multi-disciplinary team, you will operate under the EASA Part-21J Design Organization (DO) framework and adhere to the rigorous standards of safety-critical development (e.g., DO-254, DO-160, CS-23 ). This position is ideal for an engineer with a passion for innovation, precision, and compliance in high-reliability systems.
Key Responsibilities Schematic & Layout Design :
Design and simulate mixed-signal circuits (analog/digital, HV/LV, temperature, current sensing)
Integrate input protections, EMI/ESD filters, and power supply blocks (e.g., DC/DC converters)
Include digital communication protocols (CAN, RS485, RS232) and microcontrollers (MCU-based systems)
Develop complete schematics and layout using Altium Designer or equivalent ECAD tools (DWG, GBR, SCH, PcB, PnP,...)
Specialized within Analog is a plus
Documentation & Compliance :
Produce detailed Design Descriptions, calculations (FMEA; MTBF), and analysis reports (ASR)
Maintain traceability and version control of all engineering data per DO-254 guidelines
Testing & Integration :
Author and execute Qualification Test Plans (QTP) and Verification Test Procedures (VTP)
Perform debugging, de-risking, and integration of PCBs at the module and system level
Support the development of test benches and define Acceptance Test Procedures (ATP)
Conduct environmental and functional testing in accordance with RTCA/DO-160
Process Rigor :
Ensure adherence to internal and regulatory processes for configuration management, safety, and documentation
Maintain high-quality standards through structured peer reviews, checklists, and change control
Your Profile Education & Experience Bachelor’s or Master’s degree in Electronics Engineering
CFC or technical apprenticeship in electronics (strong asset)
3–5 years of experience in safety-critical hardware development (e.g., aerospace, automotive, industrial, or medical sectors)
Technical Skills Expertise in:
Mixed analog/digital circuit design and simulation (SPICE-based tools such as Simetrix )
Power electronics (e.g., DC/DC converters ), circuit protection, and filtering
High-speed digital interfaces and communication protocols (CAN, RS485, etc.)
Schematic capture and PCB layout ( Altium Designer or similar tools)
Familiarity with:
EMI/EMC principles and PCB layout best practices
IPC standards for PCB design and manufacturability
Thermal and mechanical considerations in hardware enclosures (asset)
Environmental and qualification testing per DO-160
Aerospace standards such as DO-254, CS-23, EASA/FAA certification frameworks
Tools: Altium, MATLAB, Simetrix, version control/configuration tools
Soft Skills Fast learner with a rigorous, structured, and detail-oriented mindset
Strong documentation discipline and ability to work in a certification-driven environment
Excellent analytical and problem-solving skills
Capable of working independently while collaborating effectively within a multidisciplinary team
Fluent in English (oral and written); French is a strong asset
Why Join H55 (as a Consultant)? Work on cutting-edge energy storage technologies at the core of tomorrow’s aircraft
Bring your aerospace experience to a mission-driven, fast-paced environment
Collaborate within a culture built on TRUST, TEAMWORK, COURAGE, and PERSEVERANCE
Help shape the certification and engineering excellence of next-gen clean aviation systems
Sounds interesting? We look forward to meeting you!
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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