Full-Time

Principal Power Electronics Engineer 1

CesiumAstro

CesiumAstro

201-500 employees

Designs satellite communications hardware and software

Compensation Overview

$142k - $189.5k/yr

+ Stock Options

No H1B Sponsorship

Westminster, CO, USA

In Person

US Citizenship Required

Bachelor's, Master's, PhD

Category
Electrical Engineering
Required Skills
MATLAB
Simulink
Oscilloscope
LTSpice

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Requirements
  • Bachelor of Science (BS) degree or higher in Electrical Engineering from an accredited university.
  • Minimum of 9 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 designing, testing and qualifying single-phase and three-phase off-line AC-DC power supplies, and DC-DC power supplies for industrial, airborne, or military systems
  • 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 analysis and simulation tools such as SPICE, LTSPICE, SIMetrix/SIMPLIS, PLECS, Simulink, MATLAB, MathCAD, ANSYS Q3D and SiWave, or HyperLynx
  • Experience with isolation and grounding, failure mode effects analysis and fault tolerant design, and thermal management of power electronics
  • Experience designing and testing power electronics units to meet industry standards and requirements in the automotive, industrial, aircraft, or military markets (e.g., FCC, CISPR, UL safety standards, ECSS, NASA, MIL standards)
  • Excellent written and verbal communication skills
Responsibilities
  • Lead the development of power system architectures and derive power subsystem requirements.
  • Design DC-DC power converters, power supplies, and power distribution systems ranging from a few watts to more than 20 kW of power in the 0.8 V to 400 V range.
  • Design single-phase and three-phase AC-DC power supplies and power distribution systems ranging from a few kilowatts to more than 20 kW.
  • Perform comprehensive analysis of AC-DC and DC-DC power supplies 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 supplies.
  • Lead board bring-up and design verification testing of analog and power electronics circuits.
  • Lead system integration, qualification campaigns, and production release of power supply modules and power systems.
  • Mentor younger engineers and foster knowledge sharing.
  • Lead a small team of power electronics engineers to drive project execution.
Desired Qualifications
  • Experience designing and testing isolated and non-isolated DC-DC power converters (e.g. discrete linear regulators, Buck, Boost, Buck-boost, Flyback, Forward)
  • Experience designing or specifying custom power magnetics for power supplies and power line filters
  • Knowledge of power stage design and control methods for power factor correction (PFC) converters and active rectifiers
  • Experience generating statements of work and requirements for external vendors, vendor selection, and vendor management for power supply and power system rack developments
  • Experience with electronics schematic capture and printed circuit board (PCB) layout tools such as Altium, OrCAD, Allegro or Xpedition
  • Experience running board-level power integrity simulation using tools such as Ansys SiWave, or HyperLynx
  • Knowledge of soft switching and resonant power converter topologies (e.g. LLC, CLLC, series resonant, phase shifted full bridge, dual active bridge, etc.)
  • Programming skills to support hardware test and data processing (Python, MATLAB, etc.)

CesiumAstro develops end-to-end space and airborne communications systems, including active phased array antennas, software-defined radios, and complete payloads. Its technology enables electronically steered beams for inter-satellite links, high-rate downlinks, lunar and deep-space communication, and 5G/NTN networks. It ships plug‑and‑play, commercially manufactured hardware and SDR software as a full-stack solution, reducing development time and cost. The company targets both government programs (NASA, DoD) and commercial space ventures, aiming to make space-based connectivity more accessible and adaptable.

Company Size

201-500

Company Stage

Debt Financing

Total Funding

$678.2M

Headquarters

Austin, Texas

Founded

2017

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Simplify Jobs

Simplify's Take

What believers are saying

  • February 2026 capital raised $470 million, funding Element production and engineering expansion.
  • Bee Cave headquarters adds 270,000 square feet and targets operations in Q1 2027.
  • Vidrovr acquisition on February 26, 2026 embeds AI into RF optimization and autonomy.

What critics are saying

  • AnySignal trade-secret lawsuit, filed March 25, 2024, signals talent leakage and IP fragility.
  • Large defense programs like GMD and SDA create customer concentration and protest exposure.
  • The 2027 HQ buildout depends on flawless scale-up; execution failure burns EXIM-backed credibility.

What makes CesiumAstro unique

  • CesiumAstro vertically integrates phased arrays, SDRs, payloads, and satellites across one Texas manufacturing stack.
  • EXIM called its January 2026 financing a Make More in America benchmark.
  • April 21, 2026 GMD IFICS award validates Skylark for missile-defense modernization.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

Health Savings Account/Flexible Spending Account

401(k) Retirement Plan

Stock Options

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

0%

2 year growth

-1%
AInvest Fintech Inc.
Jun 9th, 2026
CesiumAstro raises $270.5M in private placement offering

CesiumAstro has raised $270.5 million in a private placement offering, according to a Form D filing with the Securities and Exchange Commission. The offering was conducted under Regulation D, Rule 506. The filing provides details about the offering structure, including shares issued and offering price, though the company did not disclose the identities of participating investors or specific terms beyond SEC requirements. The capital will support CesiumAstro's business operations and strategic initiatives. The Form D filing is a standard requirement for Regulation D offerings to provide regulatory transparency. The company has not indicated whether additional offerings are planned.

CesiumAstro
Apr 21st, 2026
CesiumAstro selected to support GMD Weapon System (GWS) in-flight interceptor communications system (IFICS) for Missile Defense Agency.

CesiumAstro selected to support GMD Weapon System (GWS) in-flight interceptor communications system (IFICS) for Missile Defense Agency. Image Credit: CesiumAstro AUSTIN, Texas, April 21, 2026 - CesiumAstro, a leader in advanced space communications, has been awarded a contract to deliver a new active phased array variant as part of an expansion to its Skylark product line. This large-aperture array, built on CesiumAstro's scalable active phased array architecture, will support modernization of the Ground-based Midcourse Defense (GMD) Weapon System (GWS), a critical part of missile defense. This award underscores Skylark's value as a software-defined, mobile-ready terminal. The system's modular design allows it to adapt to evolving mission needs, including integration across a wide range of platforms, from ground vehicles to next-generation airborne assets. "We are honored to support the Missile Defense Agency in strengthening national security through resilient, high-performance communications," said Shey Sabripour, Founder and CEO of CesiumAstro. "With our phased array architecture and ability to deliver advanced solutions with speed and reliability, CesiumAstro will provide our customer and the Missile Defense Agency a high-performance solution." CesiumAstro will collaborate with the customer to meet mission requirements with a focus on ensuring the system meets the highest standards for performance, security and readiness. About CesiumAstro CesiumAstro is a global leader in advanced connectivity solutions for space and defense, delivering next-generation systems that connect, detect, and defend across commercial, government and national security missions. Its standardized product platforms span satellites, high-performance communications payloads, terminals and advanced computing systems, all designed for scalable production and mission-ready deployment. CesiumAstro maintains complete vertical integration with in-house design, manufacturing and testing capabilities certified to AS9100D and ISO 9001:2015 standards. Headquartered near Austin, Texas, the company operates additional facilities in Colorado, California, the United Kingdom, Germany and Japan. To learn more, visit cesiumastro.com. Media Contacts Griffin Communications Group: [email protected] Aimée Ahiers, CesiumAstro: [email protected]

TXF
Mar 9th, 2026
CesiumAstro expands Texas headquarters with $500m investment

CesiumAstro expands Texas headquarters with $500m investment. CesiumAstro announced an expansion of its global headquarters in Bee Cave, Texas, with the acquisition of nearly 270,000 square feet of advanced manufacturing space, expanding capacity for continued growth tomorrow.The expansion represents a $500 million capital investment over the next five... Not yet a subscriber? Join TXF today to continue accessing content without any restrictions Or to request access to TXF Intelligence contact TXF

Business Wire
Feb 26th, 2026
CesiumAstro Announces Acquisition of Vidrovr to Enhance Space Communications Systems and Build Planetary Intelligence Layer

CesiumAstro announces acquisition of Vidrovr to enhance space communications systems and build planetary intelligence layer. CesiumAstro announced its acquisition of Vidrovr to advance the integration of AI-driven analytics and real-time signal intelligence across its space communications systems, payloads, and satellite platforms. AUSTIN, Texas-(BUSINESS WIRE)-CesiumAstro Inc., a global provider of space and defense communications systems and satellites, today announced the acquisition of Vidrovr, an artificial intelligence (AI) company specializing in real-time multimodal signal analysis. The acquisition accelerates CesiumAstro's strategy to embed AI directly into space telecommunications and ISR (intelligence, surveillance, and reconnaissance) infrastructure, enabling intelligent radio frequency (RF) optimization, autonomous operations of payloads and satellites, and reconfigurable AI-enabled edge compute across its product lines. From mission-critical hardware to software, firmware, and waveforms, this acquisition positions CesiumAstro to further elevate its best-in-class digital processors and active phased array technologies. By embedding analytics and autonomy directly into our communications payloads and Element family of satellites, CesiumAstro is establishing a real-time planetary intelligence layer. Share "Our systems must operate in an increasingly congested and contested environment," said Trey Pappas, Chief Revenue Officer at CesiumAstro. "By embedding AI directly into our telecommunications payloads, we enable adaptive RF optimization, autonomous tasking, and real-time decision-making at the edge. This reduces latency, improves spectrum efficiency, and allows our customers to operate resilient, self-optimizing space networks at scale." AI-enabled workload orchestration allows satellites to determine which data should be processed on orbit and which should be routed to ground-based cloud and enterprise systems, creating a unified, distributed compute fabric spanning space and Earth. Following the acquisition, Vidrovr co-founder Joe Ellis is leading the integration of machine learning capabilities across CesiumAstro's product portfolio, with a focus on next-generation, AI-native space systems. "By embedding analytics and autonomy directly into our communications payloads and Element family of satellites, CesiumAstro is establishing a real-time planetary intelligence layer," said Ellis. "This layer will not only observe global activity, but interpret it, prioritize it, and route the necessary data intelligently across an expanding network of space-based assets." "What attracted me to CesiumAstro was the opportunity to operationalize AI inside production-scale space systems," continued Ellis. "Together, we're enabling distributed intelligence that connects space and terrestrial infrastructure. Our goal is to bring machine learning inference as close to the data as possible, on orbit, and quickly route the most important data to where it should be processed on Earth." The acquisition reinforces CesiumAstro's commitment to vertically integrated, scalable production of high-performance communications payloads and satellites for national security and commercial customers. By combining advanced RF hardware, software-defined architectures, and embedded AI, CesiumAstro delivers adaptive, mission-ready space systems designed for increasingly complex operational environments. Explore how CesiumAstro is integrating Vidrovr's technology in this Q&A with Joe Ellis: https://www.cesiumastro.com/joe-ellis-q-a About CesiumAstro CesiumAstro is a global leader in advanced connectivity solutions for space and defense, delivering next-generation systems that connect, detect, and defend across commercial, government, and national security missions. Its standardized product platforms span satellites, high-performance communications payloads, terminals, and advanced computing systems, all designed for scalable production and mission-ready deployment. CesiumAstro maintains complete vertical integration with in-house design, manufacturing, and testing capabilities certified to AS9100D and ISO 9001:2015 standards. Headquartered near Austin, Texas, the company operates additional facilities in Colorado, California, the United Kingdom, Germany, and Japan.

SpaceNews
Feb 26th, 2026
CesiumAstro acquires Vidrovr to embed AI in space communications systems

CesiumAstro has acquired Vidrovr, a startup specialising in artificial intelligence for multimodal signals analysis. The transaction closed in late 2025, though financial terms were not disclosed. The acquisition aims to accelerate CesiumAstro's efforts to embed AI in space telecommunications and intelligence, surveillance and reconnaissance infrastructure, enabling advanced radio-frequency capabilities. Vidrovr's AI technology will be integrated into CesiumAstro's communications systems. The deal reflects growing interest in applying AI to space-based communications and monitoring infrastructure.