Avionics EWIS Engineer

What you'll do

• Establish and own the Electrical Wiring Interconnection System (EWIS) capability at Hypersonica, defining architectures, design rules, and integration practices from first principles.
• Design and route high reliability power and signal harnessing across flight and ground systems operating in extreme thermal, vibration, and EMI environments.
• Own harness architecture, connector strategy, shielding, grounding, and separation philosophy to ensure signal integrity and system robustness.
• Work hands-on with hardware, from early prototypes through flight articles, supporting build, integration, troubleshooting, and rework.
• Partner closely with avionics, propulsion, structures, and test teams to ensure electrical systems are flight-ready, manufacturable, and rapidly iterated.
• Define and evolve EWIS documentation, schematics, and configuration control in a fast moving development environment.
• Use test, integration, and flight feedback to continuously improve designs and eliminate single point failures.

Who you are

• An avionics or EWIS engineer with 3+ years’ experience designing cable harnesses in aerospace, space, or defence environments.
• Deeply experienced in high-power, low-power, and mixed-signal harness design, with an instinct for robustness and signal integrity.
• Comfortable owning detailed design decisions, from part selection and connector choice through to full BOM definition.
• Experienced producing manufacturing-ready documentation, not just concept designs.
• Someone who understands how electrical design choices show up in build, integration, and test, and designs accordingly.
• Able to balance engineering rigour with startup speed, making sound decisions with incomplete data.
• Motivated by building core capability from the ground up in a small team where your designs directly affect flight success.
• Energised by responsibility, ownership, and seeing your work fly, fail, and improve fast.

What we offer

• A mission driven environment with the opportunity to work on one of Europe’s most consequential defence challenges, with direct impact on sovereign capability and security.
• Daily collaboration with top experts across engineering, operations, and defence, with real opportunity to learn from the best, contribute, and grow.
• High ownership and autonomy; no time tracking, no micromanagement, just clear objectives and accountability for outcomes.
• A fast paced environment where good ideas are implemented quickly, and feedback from test and flight drives real decisions.
• A culture that values clarity, integrity, and excellence, and supports people who take initiative and push boundaries responsibly.
• Competitive compensation and real share options aligned to responsibility and impact, not tenure or hierarchy.