Senior Power Electronics Engineer

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.

At CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team.

We are seeking a Senior Power Electronics Engineer to join our growing spacecraft payload development team . In this position, you will contribute across the entire development lifecycle of next-generation power electronics hardware for satellites and space power systems payloads - from leading the defin ition of power system architectures and trade studies to detailed circuit design, simulation, printed circuit board (PCB) layout, v erification and integration testing , production transition, and manufacturing support.

DUTIES AND RESPONSIBILITIES

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Define electrical power system architecture, and derive power subsystem requirements

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Design DC-DC power converters, power conditioning, power management and control circuits from concept to production release

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Perform detailed design for low to high complexity analog and power electronics circuits ranging from single DC-DC power converters to multi-output power supply modules

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Perform modeling and analysis of analog and power electronics designs including worst-case circuit analysis (WCA), stress analysis, small signal modeling analysis, failure modes and effects analysis (FMEA), reliability analysis, and power integrity analysis

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Develop design verification test plans, requirement compliance matrices, system integration and qualification test plans, and production acceptance test plans for power converters and power supply designs

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Lead board bring-up and design verification testing of power electronics circuits and modules

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Lead system integration, qualification campaigns, and release of analog and power electronics designs into production

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Mentor younger engineers and foster knowledge sharing

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Perform research and monitor power electronics industry trends to drive innovation and generate intellectual property in this area

REQUIREMENTS AND MINIMUM QUALIFICATIONS

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Bachelor of Science (BS) degree or higher in Electrical Engineering (or related) from an accredited university

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Minimum of 5 years of experience designing analog and power electronics

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Experience working with electrical power systems and subsystems, including developing power architecture and power requirements, performing trade studies for size, weight, power, and cost optimization (SWAP-C), selecting power converter topologies, and defining power management and control blocks

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Experience with power stage design of common DC-DC power converter topologies (e.g. discrete linear regulators, Buck, Boost, Buck-boost, Flyback, Forward)

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Experience with voltage mode control and peak current mode control modeling and characterization for DC-DC converters

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Knowledge of control theory and stability of power electronics, including experience characterizing control loops and impedances in the laboratory

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Experience designing power filters for low noise outputs and for power line electromagnetic compatibility (EMC)

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Experience developing design verification test plans, requirement compliance matrices, system integration and qualification test plans, and production acceptance test plans

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Experience performing worst-case circuit analysis (WCA), stress analysis, failure modes and effects analysis (FMEA), and reliability analysis for power supplies

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Extensive h ands-on experience with testing and troubleshooting electronics and power converters using laboratory instruments such as oscilloscopes, impedance analyzers, spectrum analyzers, electronic loads, and signal generators

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Experience with electronics schematic capture and printed circuit board (PCB) layout tools such as Altium, OrCAD, Allegro or Xpedition

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Experience with analysis and simulation tools such as SPICE, LTSPICE, SIMetrix/SIMPLIS, PLECS, Simulink, MATLAB, MathCAD, ANSYS Q3D and SiWave, or HyperLynx

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Excellent written and verbal communication skills

PREFERRED EXPERIENCE

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Master of Science or PhD in Electrical Engineering with research focus in power electronics

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Experience designing high-reliability analog and power electronics for automotive, space or defense applications

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Knowledge of space radiation environments and radiation effects in electronics

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Experience in power electronics applications utilizing GaN or SiC wide bandgap power semiconductor devices

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Experience running board-level power integrity simulation using tools such as Ansys SiWave, or HyperLynx

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Experience designing custom signal and power magnetics, and power filters for low noise and electromagnetic compatibility (EMC)

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Knowledge of soft switching and resonant power converter topologies (e.g. LLC, CLLC, series resonant, phase shifted full bridge, dual active bridge, etc.)

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Knowledge of power stage design for inverters and motor drives

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Knowledge of modeling and control of inverters and motor drives

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Experience with advanced control schemes for DC-DC power converters (e.g. voltage mode with feedforward control, constant on-time control, V 2 constant on-time control, phase shift modulation, average current mode control)

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Experience with isolation and grounding, failure mode effects analysis and fault tolerant design, and thermal management of power electronics

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Programming skills to support hardware test and data processing (Python, MATLAB, etc.)