CesiumAstro

Designs satellite communications hardware and software

Senior Power Electronics Engineer

Power Systems EngineeringConfirmed live in the last 24 hours

Full-timeEl Segundo, CA, USAIn-person

About the Job

Requirements

A Bachelor of Science degree or higher in Electrical Engineering or a related field from an accredited university.
At least 5 years of experience designing analog and power electronics.
Experience with electrical power systems and subsystems, including developing power architecture and power requirements, performing trade studies for size, weight, power, and cost optimization, selecting power converter topologies, and defining power management and control blocks.
Experience designing power stages for common DC-DC power converter topologies, including discrete linear regulators, buck, boost, buck-boost, flyback, and forward converters.
Experience with voltage mode control and peak current mode control modeling and characterization for DC-DC converters.
Knowledge of control theory and power electronics stability, including experience characterizing control loops and impedances in the laboratory.
Experience designing power filters for low-noise outputs and power-line electromagnetic compatibility.
Experience developing design verification test plans, requirement compliance matrices, system integration and qualification test plans, and production acceptance test plans.
Experience performing worst-case circuit analysis, stress analysis, failure modes and effects analysis, and reliability analysis for power supplies.
Extensive hands-on experience 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 layout tools such as Altium, OrCAD, Allegro, or Xpedition.
Experience with analysis and simulation tools such as SPICE, LTspice, SIMetrix/SIMPLIS, PLECS, Simulink, MATLAB, MathCAD, ANSYS Q3D, SiWave, or HyperLynx.
Excellent written and verbal communication skills.

Responsibilities

Define electrical power system architecture and derive power subsystem requirements.
Design DC-DC power converters, power conditioning, and power management and control circuits from concept through production release.
Perform detailed design of low- to high-complexity analog and power electronics circuits, ranging from single DC-DC power converters to multi-output power supply modules.
Model and analyze analog and power electronics designs, including worst-case circuit analysis, stress analysis, small signal modeling, failure modes and effects analysis, reliability analysis, and power integrity analysis.
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.
Lead board bring-up and design verification testing of power electronics circuits and modules.
Lead system integration, qualification campaigns, and release of analog and power electronics designs into production.
Mentor younger engineers and foster knowledge sharing.
Research and monitor power electronics industry trends to drive innovation and generate intellectual property in this area.

Desired Qualifications

A Master of Science or PhD in Electrical Engineering with a research focus in power electronics.
Experience designing high-reliability analog and power electronics for automotive, space, or defense applications.
Knowledge of space radiation environments and radiation effects in electronics.
Experience in power electronics applications using gallium nitride or silicon carbide wide-bandgap power semiconductor devices.
Experience running board-level power integrity simulation using tools such as Ansys SiWave or HyperLynx.
Experience designing custom signal and power magnetics and power filters for low noise and electromagnetic compatibility.
Knowledge of soft switching and resonant power converter topologies, such as LLC, CLLC, series resonant, phase-shifted full bridge, and dual active bridge.
Knowledge of power stage design for inverters and motor drives.
Knowledge of modeling and control of inverters and motor drives.
Experience with advanced control schemes for DC-DC power converters, such as voltage mode with feedforward control, constant on-time control, V2 constant on-time control, phase shift modulation, and 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 testing and data processing, such as Python and MATLAB.

Salary Range: 140000 to 168000 (Currency: USD) (Pay period: per-year-salary)

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 developmentteam. In this position, you will contribute across the entire development lifecycleof next-generation power electronics hardware for satellites and space power systems payloads—from leading the definition 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

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

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

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

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

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

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

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

Experience with 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

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

Extensive 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 or Xpedition

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

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 for automotive, space or defense applications

Knowledge of space radiation environments and radiation effects in electronics

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

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

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

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

Knowledge of power stage design for inverters and motor drives

Knowledge of modeling and control of inverters and motor drives

Experience with advanced control schemes for DC-DC power converters (e.g. voltage mode with feedforward control, constant on-time control, V2 constant 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 data processing (Python, MATLAB, etc.)

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 to race, 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.

About the Company

CesiumAstro

Designs satellite communications hardware and software

CesiumAstro builds end-to-end space and airborne communications systems, combining hardware and software to connect satellites, UAVs, and ground stations. Its products include active phased array antennas, software-defined radios, and complete RF payloads that enable electronically steered links for inter-satellite communication, high-rate downlinks, lunar communications, and 5G/NTN networks. The company ships plug-and-play, commercially manufactured, full-stack systems designed to be flexible and cost-efficient, rather than bespoke one-off solutions. Its goal is to make space-based connectivity more accessible and adaptable across space, air, and ground networks for both government and commercial customers.

Company size: 501-1,000
Company stage: Debt Financing
Total funding: $1.6B
Headquarters: Bee Cave, TX
Founded: 2017

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