Principal Electrical Engineer

Join to apply for the Principal Electrical Engineer I role at Cesium Astro.

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 Cesium Astro, 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, Cesium Astro is the place for you.

We are actively seeking passionate, collaborative, energetic, and forward‑thinking individuals to join our team.

At the Principal level, you will be tasked with full‑stack hardware development for complex modules and hardware systems. You will have the opportunity to start at concept development and progress through detailed design, analysis, layout, build, test, and delivery, doing hands‑on work at each phase. The Principal level also includes technical leadership opportunities, gaining responsibility for critical designs and teams of engineers developing new products and systems.

At a small company and a startup, your work will make direct contributions to the success of the business. The work is challenging and impactful, requiring both breadth and depth of technical knowledge. Our products are made for high‑reliability space and airborne applications, so designs require high levels of technical rigor while maintaining the agility of a startup environment.

The successful candidate will also present engineering design review materials to our customers and executive team. As such, excellent written and verbal communication skills are required.

This role will initially be remote, with a planned transition to in‑person work once our Florida office is established.

• Own end‑to‑end design of complex electronics modules and systems, from concept and architecture through schematic, layout, test, and production.
• This role focuses on high‑speed digital or mixed‑signal hardware development. Product lines include state‑of‑the‑art software‑defined radios (SDRs) and single‑board computers (SBCs) for space and airborne applications.
• Lead teams of hardware engineers to develop new products with multiple electronics modules.
• Provide subject‑matter expertise in support of digital and mixed‑signal hardware development across the company.
• Develop hardware architecture and write hardware requirements for systems of high complexity.
• Perform detailed and complete schematic design for complex boards, ranging from key components to supporting passives.
• Perform detailed PCB layout in Altium Designer for complex boards, often working with a PCB Drafter.
• Complete analysis such as worst‑case circuit analysis, signal integrity analysis, and power integrity analysis. Guide analysis methodology.
• Develop bring‑up plans and design verification plans for new hardware and complex systems.
• Perform bring‑up and key verification testing of modules and complex integrated systems, often working with a team to complete validation.
• Release modules and assemblies to production, working with the Manufacturing and Test Engineering teams.
• Mentor junior and senior engineers to build technical understanding and professional development.
• Use strong working knowledge of adjacent fields, such as software and mechanical, to streamline development of complex hardware systems.

• Bachelor of Science (BS) degree or higher in Electrical Engineering from an accredited university.
• Minimum of 9 years of industry or university research experience in board‑level electronics design, analysis, and test.
• Direct experience designing high‑reliability electronics and small systems for space or defense applications, including part derating, worst‑case analysis, and thermal…