Mechanical Engineer and GNC Engineer

_{01st July, 2026}

About the Company:
Join an innovative Australian technology company developing advanced electromechanical systems for high-performance, mission-critical applications.
 
Working alongside highly experienced engineers and global technology partners, you'll play a key role in delivering advanced solutions from concept through to deployment.
 
Job Title: Senior / Principal Mechanical Engineer
Location: Sydney, NSW
Salary: Competitive salary package (commensurate with experience)
Work Set-up: Full-time | Permanent | On-site
 
About the Role:
We are seeking a highly experienced Senior to Principal Mechanical Engineer to lead the mechanical design and development of advanced electro-optical systems and precision gimbal assemblies.
 
This is a technically challenging hands-on/leadership role where you will take ownership of mechanical architecture, precision design, thermal analysis, structural optimisation, and product industrialisation. You'll collaborate closely with multidisciplinary engineering teams while driving products from concept through prototype, qualification, and commercial deployment.
 
Key Responsibilities:

• Lead the end-to-end mechanical design and development of advanced EO/IR gimbal systems.
• Develop mechanical requirements, specifications, verification plans, and technical documentation.
• Design precision mechanical assemblies using CATIA and modern CAD tools.
• Define mechanical interfaces across optics, electronics, sensors, actuators, and structural components.
• Perform or oversee FEA, thermal analysis, CFD simulations, and structural optimisation.
• Lead precision bearing, actuator, and motion system selection.
• Optimise mechanical performance through tolerance analysis, dynamic balancing, vibration isolation, lightweight structures, and backlash reduction.
• Support sensor alignment, boresight processes, and manufacturing method development.
• Drive Design for Manufacture (DFM) and Design for Supportability initiatives.
• Lead engineering design reviews, technical risk assessments, and engineering change activities.
• Support system-level performance optimisation alongside controls, electronics, optical, software, and systems engineering teams.

• Bachelor's degree or higher in Mechanical Engineering or Mechatronics Engineering.
• 5-10+ years of experience in advanced mechanical product development.
• Proven experience delivering products from concept through commercial production—not just prototype development.
• Strong expertise in precision mechanical design, CATIA, FEA, thermal analysis, and structural engineering.
• Experience with precision mechanisms, servo systems, stabilised platforms, or motion control.
• Knowledge of tolerance analysis, vibration isolation, dynamic balancing, and lightweight structures.
• Experience leading technical design reviews and cross-functional engineering teams.
• Previous experience acting as a Design Authority or technical lead is highly regarded.
• Experience within Defence, Aerospace, EO/IR, Robotics, or other high-precision engineering environments is advantageous.
• Ability to obtain and maintain an Australian Defence NV1 Security Clearance.

• Design and develop guidance, navigation, and control architectures for EO/IR systems.
• Develop and optimise line-of-sight stabilisation and target tracking algorithms.
• Design servo control systems and advanced control loops.
• Model gimbal dynamics and analyse control-structure interactions.
• Develop pointing, tracking, stabilisation, and jitter performance budgets.
• Integrate IMUs, gyroscopes, encoders, resolvers, and actuator systems.
• Develop simulation environments using MATLAB/Simulink or equivalent platforms.
• Perform stability analysis, frequency-domain analysis, and dynamic system modelling.
• Support sensor calibration, boresighting, verification, qualification, and flight testing.
• Develop engineering specifications, interface definitions, verification plans, and technical documentation.
• Conduct technical trade studies and engineering risk assessments.
• Support production transition and continuous product improvement.
• Collaborate with multidisciplinary teams including software, electronics, optical, mechanical, systems, and test engineers.

• Bachelor's degree in Aerospace, Mechanical, Electrical, Mechatronics Engineering, or a related discipline.
• 5-15+ years of relevant engineering experience.
• Strong experience developing control systems for high-performance electromechanical systems.
• Expertise in servo control, stabilisation systems, guidance algorithms, and motion control.
• Strong understanding of classical and modern control theory.
• Experience with MATLAB/Simulink or equivalent modelling tools.
• Knowledge of frequency response analysis, state-space control, PID control, Bode plots, and stability analysis.
• Experience integrating inertial sensors and precision motion systems.
• Proven experience delivering products from prototype through commercial deployment.
• Experience leading technical reviews and multidisciplinary engineering teams.
• Strong communication and stakeholder management skills.
• Previous Design Authority or Technical Lead experience is highly regarded.
• Defence, Aerospace, EO/IR, Robotics, Autonomous Systems, or Precision Motion Control experience is advantageous.
• Ability to obtain and maintain an Australian Defence NV1 Security Clearance.

• Work on world-leading defence technologies.
• Solve technically complex engineering challenges.
• Collaborate with highly experienced multidisciplinary teams.
• Ongoing technical development and international collaboration.
• Competitive salary package.
• Stable long-term career with innovative defence programs.