Senior Power Electronics Engineer

Woven; El Segundo (CA); On-site; USD 140,000 - 168,000; Full time

Benefits offered by this job

Stock options

Health, dental, vision benefits

Retirement plans and generous benefits

Job summary

CesiumAstro is seeking a Senior Power Electronics Engineer to join our spacecraft payload development team. You will lead the design of power system architectures, perform trade studies, and drive verification from definition through production release for satellite power electronics.

You will model, simulate, and test DC-DC converters, power management, and control loops, ensuring reliability, EMC, and high performance in space environments. Collaboration across engineering teams is essential.

Qualifications

• BS in Electrical Engineering from an accredited university.
• Minimum 5 years designing analog and power electronics.
• Experience with power architecture and SWAP-C trade studies.
• Experience with DC-DC converter topologies (buck, boost, buck-boost, flyback, forward).
• Voltage-mode / peak current-mode control modeling for DC-DC converters.
• Power filters design for low-noise outputs and EMC.
• Experience with design verification plans and production acceptance tests.
• Hands-on testing with lab instruments and PCB troubleshooting.

Responsibilities

• Define power system architecture and derive subsystem requirements.
• Design DC-DC converters and power conditioning circuits end-to-end.
• Perform detailed analog and power electronics designs from concept to production release.
• Model and analyze circuits including FMEA and reliability.
• Develop verification and qualification test plans and production acceptance tests.
• Lead board bring-up and verification testing.
• Mentor engineers and drive knowledge sharing.
• Research and monitor power electronics trends to drive innovation.

Skills

Power electronics design

DC-DC converters

WCA / FMEA / reliability analysis

Control theory / loop stability

PCB layout tools

Schematic capture / PCB tools

Power integrity / EMC

Lab testing with oscilloscopes

Modeling/simulation tools

Programming for test data (Python,MATL

Education

Bachelor of Science in Electrical Engineering

Master of Science in Electrical Engineering (preferred)

PhD in Electrical Engineering (preferred)

Tools

Altium

OrCAD

Allegro

Xpedition

LTspice

SIMetrix/SIMPLIS

PLECS

MATLAB

ANSYS Q3D / SiWave

HyperLynx

Job description

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.

AtCesiumAstro, 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 aSenior 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 ide of power system architectures and trade studies to detailed circuit design, simulation, printed circuit board (PCB) layout, verification and integration testing, production transition, and manufacturing support.

DUTIES AND RESPONSIBILITIES

• Define electrical power system architecture, and derive power subsystem requirements

• DesignDC-DC power converters,power conditioning, powermanagementand control circuitsfromconcept toproductionrelease

• Perform detailed design forlow to highcomplexity analog and power electronics circuits ranging from single DC-DC power converters to multi-output power supply modules

• Perform modeling andanalysisof analog and power electronics designs includingworst-case circuit analysis(WCA),stress analysis, small signal modelinganalysis,failure modes and effects analysis (FMEA), reliability analysis,and power integrity analysis

• Develop design verificationtestplans, requirement compliance matrices, system integration and qualification test plans, and production acceptance test plansforpower converters and power supply designs

• Lead boardbring-up and design verification testing of power electronics circuits and modules

• Lead systemintegration,qualification campaigns, and releaseofanalog and power electronics designsinto production

• Mentor younger engineers and foster knowledge sharing

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

REQUIREMENTS AND MINIMUM QUALIFICATIONS

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

• Minimum of 5 years of experience designing analog and power electronics

• Experience working with electrical power systemsandsubsystems, including developing power architecture and power requirements,performingtrade studiesfor size, weight, power, and cost optimization (SWAP-C),selectingpower convertertopologies,anddefining power management and control blocks

• Experience with power stagedesign ofcommonDC-DC power convertertopologies (e.g.discretelinear regulators,Buck,Boost,Buck-boost, Flyback,Forward)

• Experiencewith voltage mode control and peak current mode control modeling and characterization for DC-DC converters

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

• Experiencedesigningpower filters for low noiseoutputsandforpower line electromagnetic compatibility (EMC)

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

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

• Extensive h hands-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

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

• Experience with analysis and simulation tools such as SPICE, LTSPICE,SIMetrix/SIMPLIS, PLECS, Simulink, MATLAB,MathCAD, ANSYS Q3D andSiWave,orHyperLynx

• Excellent written and verbal communication skills

PREFERRED EXPERIENCE

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

• Experience designing high-reliability analog and power electronics forautomotive,space or defense applications

• Knowledge of space radiation environmentsand radiation effects in electronics

• Experience in power electronics applications utilizingGaNorSiCwide bandgap power semiconductor devices

• Experience running board-level power integrity simulationusingtools such as AnsysSiWave, orHyperLynx

• Experience designing customsignal and powermagnetics,and power filters for low noise and electromagnetic compatibility (EMC)

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

• Knowledge ofpower stage design forinverters and motor drives

• Knowledgeofmodeling and control ofinverters and motor drives

• Experience withadvanced control schemes for DC-DC power converters (e.g.voltage mode with feedforward control, constant on-time control, V2constant on-time control, phase shift modulation, average current mode control)

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

• Programming skills to support hardware test and dataprocessing(Python, MATLAB, etc.)

$140,000 - $168,000 a year

CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate’s work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package including health, dental, vision, HSA, FSA, life, disability and retirement plans.

CesiumAstro is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard torace, color, religion, sex, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.

Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.