Sr. Power Electronics Engineer - HW Design at Supernal

Rise above. Are you ready to take human possibility to a new dimension with us?

Supernal is an Advanced Air Mobility (AAM) company that’s developing an electric vertical take-off and landing (eVTOL) vehicle and the ground-to-air ecosystem to support the emerging industry. By creating a sustainable, integrated, and human-centered ecosystem, we are committed to taking a thoughtful and responsible approach to entering the AAM market with a product that meets the high level of safety and reliability in today’s air transportation system.

The future of mobility starts with people. We believe in creative thinking and collaboration to help build a better mobility experience for everyone, improving people’s ability to move – whether for work or play. Join our dynamic team as we strive to be a part of something greater where potential powers tomorrow!

Supernal provides an inviting open-space workplace designed to foster collaboration, which aligns with one of our core values. This position is required to work on-site 5 days a week.

What we do: 

The Sr. Power Electronics Engineer - HW Design focuses on architecting, design & development of BMS HW (hardware) and electrical systems at Module level and Pack level from concept to completion for our Energy Storage Systems (ESS). The role is responsible for detailed HW design, design analysis, prototype verification and production support for testers and product manufacturability. This role works closely with other SW / Algo / Cell Engineers in the Battery team and other multi-functional team members to develop SW requirements and to support integration testing at the Powertrain, ESS system, or Cell module level.

• Responsible for BMS hardware or other mixed signal power electronics design, development and design releases with complete configuration control


• Responsible for interface definition development between peer sub systems


• Responsible for hands on board bring up, BMS verification, Battery verification efforts


• Support architectures development for HVBMS for new and innovative ESS solutions


• Ensure requirement traceability between BMS and other higher and lower-level system


• Develop and release board level and system level requirement specifications


• Simulate ESS and BMS using MATLAB/ Simulink and linking with aircraft level models and hardware-in-the-loop (HIL) systems for parallel validation of BMS functionality


• Analyze the schematic and layout designs to verify its conformance to the design requirements using Reliability studies, fault tree analysis, DFMEA or similar approaches


• Conduct and participate in design reviews, incorporate team feedback, and release design documents


• Develop validation requirements for HVBMS and approve validation results confirming agreed upon performance.


• Other duties as assigned

• Bachelor’s degree in electrical engineering or electronics engineering; Master’s or PhD degree preferred


• Minimum of five (5) years of demonstrated experience in BMS hardware or mixed signal and power electronics hardware development for industrial, automotive, large consumer products or aerospace applications (an equivalent combination of education and experience may be considered)


• Experience in HV battery management system design or similar HW development for a production-released product


• Experience in low voltage BMS HW design and good analog / mixed-signal / power electronics design 


• Proficiency in architecting and designing analog & mixed signal high voltage, high accuracy and medium speed PCB designs using the latest cell monitors and master BMS microcontrollers


• Proficiency in HV DC/DC, contactors, fuse selection for HV ESS applications with excellent understanding of HV safety and protection methods


• Proficiency in HW simulation tools like PSpice, LTspice and modeling tools like MATLAB, SIMULINK


• Proficiency in HV circuit design, protection, and safety aspects as applicable to HV batteries


• Proficiency in ECAD tools like Altium for schematics and layout


• Excellent skills required in technical communication, and reliance on data for issue resolution and decision making


• Excellent hands-on electronic development and testing skills and experience required


• Good understanding of lithium-based cell chemistries, their protection requirements, and gauging challenges


• Ability to design HW to meet environmental, EMI/EMC, thermal, shock & vibration per industry standards or aviation standards like DO160


• Experience in conducting and documenting tolerance analysis, part stress analysis, safety hazard analysis, FMEA, and FTA


• Experience in designing with varies communication interfaces like CAN, SPI, SCI, I2C and Ethernet


• Excellent verbal and written communication skills


• Proactive delivery of communication and follow up


• Excellent organizational skills and attention to detail


• Must have the ability to independently prioritize and accomplish work within time constraints


• Proficiency with Excel VLOOKUP, pivot tables, MS Office Suite

• Familiarity with aviation standards like DO254, ARP4754, ARP4761 preferred

Base pay offered may vary depending on skills, experience, job-related knowledge and location. This position is also eligible for a bonus as part of total compensation.

The pay range for this position is:

$122,750—$157,500 USD

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Any offer of employment is conditioned upon the successful completion of a background check. We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, citizenship, sex, gender, gender expression, sexual orientation, age, marital status, veteran status, disability status or any other category or class protected under applicable federal, state or local law. Individuals with disabilities may request a reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation at:

This position may include access to certain technology and/or software source code subject to U.S. export controls laws and regulations. If an export authorization from an applicable US regulatory agency is required in connection with your employment, your employment is contingent upon Supernal’s receipt of such regulatory authorization(s) and your continued compliance with all conditions and limitations pursuant to such authorization(s).