Satellite Electrical Power Systems Engineer

Location

Reading (London)

Employment Type

Full time

Location Type

On-site

Department

Satellite

Your Role

We are seeking a Satellite Electrical Power Systems Engineer to lead the design, development, and delivery of the electrical power subsystem for our satellite missions. You will own the end-to-end power system architecture — from energy generation and storage to power conditioning and distribution — ensuring reliable, efficient operation throughout the mission lifecycle. Your expertise in smallsat-class spacecraft will enable you to optimise performance under tight mass, volume, and schedule constraints in a fast-paced, agile environment.

Key Responsibilities

• Define and maintain power subsystem requirements, architecture, and interface control documents (ICDs).
• Design and analyse solar array, battery, and power regulation/distribution systems to meet mission needs.
• Conduct power budget analysis and sizing for all mission phases, including contingency scenarios.
• Perform modelling, simulation, and worst-case analyses to verify system robustness.
• Select and qualify components for ULEO space environments, including radiation tolerance, atomic oxygen exposure, and thermal considerations.
• Support manufacturing, assembly, integration, and testing of the power subsystem.
• Develop and execute subsystem-level and integrated system-level test plans (functional, thermal vacuum, vibration).
• Lead power subsystem reviews (PDR, CDR, TRR) and support system-level design and readiness reviews.
• Interface with all spacecraft subsystems and engage in system-level trade-studies.
• Support launch and early orbit operations, including on-orbit power performance monitoring and troubleshooting.

Fundamental Requirements

• >3 years of experience in spacecraft or satellite power subsystem engineering, with at least one smallsat-class mission delivered to orbit.
• Strong technical knowledge of spacecraft electrical power systems, including solar array design, battery technology, and power electronics.
• Experience with power budget modelling, simulation tools, and hardware test campaigns.
• Familiarity with space-qualified components and radiation/thermal design considerations.
• Hands-on experience in integration & testing in cleanroom environments.
• Excellent problem-solving skills and the ability to work in agile, cross-disciplinary teams.
• Strong communication skills to work with suppliers, subsystem teams, and mission partners.

Why [Employer hidden]?

• Pioneering Space Technology – You'll contribute to launching groundbreaking technology into space. Your work on our revolutionary ion propulsion system and ULEO satellite platform will redefine satellite operations and disrupt traditional LEO operations.
• Unmatched Ownership and Impact – You'll experience a level of ownership that's rare in the space industry. You will participate in the full lifecycle of satellite technology.
• Equity and Competitive Salary – You'll receive not just a competitive salary but also company ownership stakes. Your dedication and hard work are rewarded with a share in the technology you help build, ensuring you're a part of our collective success.
• Comprehensive Benefits Package –Including private health insurance with dental and optical coverage, annual healthcare check-ups etc.
• Hybrid Work - A hybrid setup with one dedicated remote day per week.
• Visa Sponsorship & Relocation Support - We provide a relocation package and sponsor your visa if you’re joining us from abroad.