Principal Avionics Engineer

ALTEN is a global engineering and technology consultancy operating across over 35 countries worldwide. We partner with industry leaders across sectors including Aeronautics, Aerospace, Defence, Naval, Automotive, Energy, Rail, IT and many more to deliver innovative engineering solutions that drive technological advancement & support sustainable transformation.

Our teams of passionate and agile engineers work on cutting‑edge projects that shape the future of technology and sustainability. At ALTEN, we empower talented engineers to innovate, solve complex challenges, and deliver impactful solutions that build tomorrow’s world—today.

Join us and start building tomorrow’s world today!

As part of our continued growth within the Space sector, we are seeking a Principal Avionics Engineer to provide technical leadership on the development of next‑generation space systems.

This role is ideal for a senior engineer looking to drive avionics strategy, architecture, and delivery while mentoring engineering teams and contributing to technically complex programmes.

• Location: London
• On Site: 1-2x a month
• Clearance: Clearable
• Experience Level: Mid Level

• Leading the development and definition of spacecraft avionics architectures.
• Driving technical decisions and providing subject matter expertise across avionics disciplines.
• Defining avionics requirements and ensuring alignment with system‑level objectives.
• Supporting the integration of onboard computing, communications, power management, and data handling systems.
• Managing avionics interfaces across multidisciplinary engineering teams.
• Leading engineering trade studies, risk assessments, and technical investigations.
• Supporting verification, validation, qualification, and acceptance activities.
• Contributing to design reviews and customer‑facing technical discussions.
• Mentoring and supporting junior engineers within the team.

• Significant experience in avionics engineering for spacecraft, satellites, launch systems, or other space platforms.
• Strong understanding of spacecraft avionics architectures and subsystem integration.
• Experience leading technical activities within complex engineering programmes.
• Knowledge of onboard data handling systems, flight computers, communications systems, and electrical architectures.
• Experience with requirements management, verification, and validation processes.
• Strong understanding of systems engineering principles and full product lifecycle development.
• Experience managing technical interfaces across multidisciplinary teams.
• Ability to produce and review high‑quality technical documentation.

• A Bachelor’s or Master’s degree in Engineering
  , or equivalent
  military experience
  .

• Experience with ECSS standards and space‑qualified hardware development.
• Knowledge of spacecraft communications, telemetry, telecommand, and onboard networking architectures.
• Familiarity with embedded systems, flight software, and avionics integration activities.
• Experience supporting Assembly, Integration & Test (AIT) and qualification campaigns.
• Understanding of fault tolerance, redundancy architectures, and mission assurance principles.
• Experience participating in major programme reviews such as SRR, PDR, CDR, and qualification reviews.
• Previous technical leadership or team mentoring experience.
• Strong stakeholder engagement and customer‑facing communication skills.
• Experience working within consultancy or multi‑partner delivery environments.

We bring together entrepreneurial, tech‑driven people to deliver innovative solutions for leading companies.

At ALTEN, you’ll work on exciting projects, supported by ongoing learning, mentoring, and clear career development tailored to your goals.

Join a passionate team and help build tomorrow, today.

• A personalised career path and a rewarding management style
• A huge diversity of engineering projects and industries
• Private Medical Insurance
• Cycle & Tech Scheme
• Employee assistance programme
• Life insurance & Pension Scheme
• Social atmosphere, regular gatherings & team buildings
• Flexible way of working…