Principal Electrical Engineer I - Phased Array Unit Lead

***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 highly skilled **Principal Electrical** **Engineer** to lead the design, development, integration, test, and flight qualification of advanced spaceborne payloads.

This post focuses on the role of **Unit Lead (aka Responsible Engineer) in our Phased Array product line, focusing on Ka-band Active Electronically Steered Arrays (AESAs)**. CesiumAstro AESAs are state-of-the-art electronics assemblies consisting of an antenna element array, RF electronics, digital array control, and power conversion – engineered into a single box using a modular but optimized approach.

The Unit Lead is responsible for **both** **technical definition and execution** of a new AESA product. This combines deep, multi-disciplinary technical accountability with responsibility for on-time schedule execution. The project may include the development of new active antenna modules, new RF and power/digital backplanes, new array control and power conversion, and/or new software features, coming together into a qualified, customer-ready product.

The Unit Lead is the leader of the multidisciplinary technical team, the primary point of contact for the program manager, and often a key interface point for our customers. Success in this role requires deep expertise in technical topics as well as project management, leadership, and communication in a fast-paced startup environment.

### JOB DUTIES AND RESPONSIBILITIES

• Serve as the AESA Unit Lead and primary technical point of contact for the box throughout the product development lifecycle.
• Lead the end-to-end engineering effort for the box, including architecture, design, prototyping, integration, test, environmental qualification, and flight readiness.
• Coordinate and direct a team of RF, digital, power, mechanical, thermal, software, and systems engineers to ensure consistent and timely technical execution.
• Hold schedule accountability for the box development.
• Develop and review payload control schemes, internal data interfaces, command & telemetry architecture, and firmware/software integration as needed.
• Manage all flight qualification activities, including environmental test planning (thermal vacuum, vibration, shock, EMC), margin assessment, and final acceptance testing.
• Own the transition to volume production, including manufacturability, testability, and customer-facing documentation.
• Generate and maintain box-level documentation: requirements, ICDs, block diagrams, test plans, verification matrices, risk registers, and design reviews.
• Interface with spacecraft systems engineering, mission assurance, manufacturing, vendors, and test facilities.
• Drive root cause analysis, anomaly resolution, and technical risk mitigation throughout development and test campaigns.
• Communicate status, technical trades, risks, and design decisions to internal leadership and external customers.

### JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS

• Bachelor’s degree or higher in Electrical Engineering or a related field.
• 9+ years of engineering experience in electronics hardware development.
• Hands-on experience with related technologies such as active phased array antennas.
• Expertise in antennas and board-level RF electronics.
• Strong familiarity with power/digital support circuitry and design for manufacturability.
• Experience testing active antennas, including measuring EIRP and G/T.
• Leadership experience, including mentoring or leading multidisciplinary engineering teams.
• Strong knowledge of systems engineering practices, requirements flowdown, verification/validation, and configuration management.
• Excellent communication skills with ability to present complex technical information to diverse audiences.

### PREFERRED EXPERIENCE

• Proven experience executing or overseeing flight qualification and environmental test campaigns (TVAC, vib/shock, EMC, radiation considerations).
• Experience managing hardware/software product development projects.
• Experience with radiation-tolerant design.
• Experience with high-rate manufacturing, rapid development cycles, and/or NewSpace ecosystems.
• Prior role as a Responsible Engineer, Technical Lead, IPT Lead, or Chief Engineer on flight hardware.
• Experience in high-frequency antenna design e.g. Ka band.
• Experience mentoring less-experienced project engineers and design engineers in associated discipline.
• High energy and a “get it done” attitude.