EMI/EMC Engineer

About H-55 

As the technological spin-off of Solar Impulse, the first electric airplane to fly around the world, H55's mission is to make aviation clean, safe, and affordable. 

The company’s strengths and competencies lie in developing propulsion and energy storage solutions that 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

In the frame of its product development (Energy Storage System), H55 is hiring an EMI/EMC Engineer. 

Within a multidisciplinary team, you will be responsible for ensuring the compliance of electronic and electrical systems with Electromagnetic interference (EMI) and electromagnetic compatibility (EMC) standard. You will be part of Part-21J Design Organization (DO). 

Specifically, you will be responsible to: 

• Develop and implement EMI/EMC test plans, procedures, and protocols for aerospace applications. 

• Conduct EMI/EMC testing (Anechoic Chamber, Spectrum Analyzer, probe measurement) to ensure compliance with industry standards and regulatory requirements (e.g., DO-160, MIL-STD-461, MIL-STD-464). 

• Analyze test results, troubleshoot EMI/EMC issues, and provide detailed reports (Shielding, Filtering, Grounding, Bonding,…) 

• Collaborate with design and engineering teams to incorporate EMI/EMC mitigation techniques in product development. 

• Write design documentation: EMI/EMC analysis reports, compliance matrices, and test reports. 

• Maintain meticulous documentation throughout the entire process. 

• Manage all EMI/EMC data under your responsibility according to our DO-254 development methodologies and configuration management rules. 

• Stay updated on the latest EMI/EMC standards, regulations, and testing methodologies. 

• Participate in product design reviews to ensure EMI/EMC considerations are integrated from the outset. 

• Provide training and support to engineering teams on EMI/EMC best practices (design, troubleshooting, testing, ...). 

• Knowledge of EMI/EMC at aircraft level, system level and item level apply to aerospace is a plus. 

Your Profile: 

• Bachelor’s or Master’s degree in Electrical Engineering, Electronics, or a related field. 

• 3-5 years of experience in EMI/EMC testing and compliance, preferably in high-reliability and/or safety-critical industries (aerospace, automotive, medical, or industrial). 

• Proactive and team player attitude is key to success. 

• Good knowledge of: 

  • EMI/EMC standards (e.g., CISPR, FCC, IEC, DO-160, MIL-STD-461) 
  • EMI/ESD/EFT protection and filtering techniques 
  • Mixed analog/digital circuit design, power supply (DC/DC), and circuit simulation tools (e.g., Simetrix, Spice) 
  • Proficiency in Schematics entry and circuit board layout (e.g., Altium Designer). 

• Experience with PCB IPC standards. 

• Aerospace/aviation process and standard knowledge is a plus (under EASA/FAA CS-23 or equivalent). 

• Notions in Thermal Engineering (cooling) and Mechanical Engineering (enclosure) is a plus. 

• Proficiency in Matlab and Altium use is a plus. 

• Experience in environmental testing (temperature, vibration, EMI/EMC, DO-160) and aviation development assurance standards (DO-254) is a plus. 

• Fast learner, rigorous, with analytic problem-solving capabilities and ability to properly document. 

• Well-organized, capacity to prioritize & pro-active (start-up mindset) 

• Fluency in English, French is a strong asset. 

What we offer: 

• An amazing work location in Sion, Valais in the heart of the 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. 

• A position that contributes to valuable and impactful work in a stimulating international environment. 

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. 

#LI-DNI