We're building aircraft that fly faster, further, and to space.

Hypersonix is an Australian aerospace engineering and advanced manufacturing company building hydrogen-powered scramjet aircraft. We work at the bleeding edge of hypersonic technology, delivering aircraft that fly faster, reach further, and open new pathways to space - and we're a small, highly capable team doing work that genuinely matters.

The Opportunity

As a GNC Engineer II , you’ll take ownership of guidance, navigation and control engineering of Hypersonix flight vehicles. You’ll develop and verify GNC algorithms, building and maintaining physics-based vehicle simulation models, and support integration and test of GNC subsystems through development, qualification and flight. You’ll be a key member of the team, delivering on complex projects as well as providing mentorship and guidance to junior engineers.

This is a unique opportunity to work with cutting-edge hypersonic technology and make a real impact in a high-growth environment. If you’re passionate, innovative and want true autonomy to do your best work, we’d love to hear from you!

What you’ll be doing

Responsibilities Include

• Design, tune and verify GNC algorithms across all mission phases – boost, separation, glide, cruise
• Develop and evolve high-fidelity 6‑DoF simulation models to support algorithm validation and flight software integration
• Conduct Monte Carlo and sensitivity analyses to ensure performance and robustness under uncertainty
• Lead and execute MIL, SIL and HIL test campaigns, defining scenarios, instrumentation and success criteria
• Integrate and characterise navigation sensors (IMU, GNSS, air data, optical), including calibration and alignment
• Analyse and correlate flight and test data with simulation, continuously improving model accuracy and confidence

Life at Hypersonix

We're a 60-person company moving fast in one of the most demanding fields in aerospace. The pace is fast, expectations are high and the environment is constantly evolving. The people who thrive here are energised by that — not unsettled by it.

You’ll thrive here if you

• Take ownership of your work and keep things moving, even when the picture isn’t complete
• Care about doing things well and getting them done — and learn to balance both
• Stay calm and constructive when priorities shift.

What you’ll bring

To hit the ground running in this role, you’ll need:

• Bachelor’s degree in aerospace engineering, electrical engineering, mechatronics or a related engineering field
• 5+ years’ experience in GNC, control systems, flight dynamics or vehicle simulation in aerospace/defence
• Strong grounding in control theory, estimation (Kalman filtering) and 6‑DoF modelling
• Hands-on expertise with MATLAB/Simulink for control design, simulation and auto-code generation

Bonus Points For

• Postgraduate qualification (master’s or PhD) in GNC, control systems, flight dynamics, estimation or a closely related field.
• Experience in hypersonic, launch vehicle, missile, UAV or high-performance flight vehicle programmes.
• Experience with aeroelastic effects on GNC and reduced-order model integration with flight dynamics.

Ready to Fly Faster?

Benefits Include

• Competitive salary
• Equity participation
• Flexible working – we care about output, not hours
• Funded Professional development
• Confidential Employee Assistance Program

Apply with your resume and a short note on what draws you to this role today!