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Junior Mechanical Engineer
Q-CTRL
Other Engineering
Sydney, NSW, Australia
Posted on Nov 3, 2025
About the team
The Sensing Engineering team at Q-CTRL transforms quantum research into deployable technologies that address real-world problems. We design, build, and field-validate an array of quantum sensors that support our key products, including Ironestone Opal - our solution for GPS-denied navigation.
You don’t need a background in quantum to make an impact here. We value strong engineering fundamentals, a product mindset, and a drive to solve the hardest engineering problems in quantum sensing today.
About the role
We are seeking a Mechanical Engineer to join our Quantum Sensing division. Working closely with a world-leading team of physicists and engineers, you will be hands-on with the design, assembly, and testing of some of the world’s most sensitive gravimeters, magnetometers and laser systems.
In this role you’ll be a part of the mechanical and optics team, and will assist in the design and testing of our quantum sensing technology. You will work closely with a team of engineers, physicists and technicians to support our technology development and bring our quantum technology out of the lab and into the field.
You will join a growing team focused on quantum sensing for defence and aerospace, and work with experts in fields such as cold-atom interferometry, magnetometry, and inertial navigation to develop state-of-the-art technology.
What you’ll be doing:
- Design and prototype enclosures, jigs and fixtures, and components of our quantum sensors
- Contribute to the integration, commissioning and support trials outside the lab of our sensor technology
- Work with physicists, engineers and stakeholders to design the highest-precision measurement systems in the world
- Be part of the team responsible for integration, test and validation of newly commissioned sensors.
Ideally you’ll have:
- Bachelor's degree or higher in mechanical engineering
- Relevant experience in designing and prototyping mechanical systems
- Hands-on experience in prototyping, and familiarity with CNC machining, 3D printing, and sheet metal bending
- Experience with engineering analysis, drawings and tolerancing, assembly etc.
- Demonstrated experience designing with Inventor or similar CAD software
Nice to have,
- Experience with fast-paced prototyping, especially through student design competitions
- Experience with operating in an R&D or research environment
About Q-CTRL
Q-CTRL is the global leader in AI-powered quantum control infrastructure software. We build the tools that make quantum technology useful, solving the hardest challenges in quantum computing and quantum sensing to deliver real-world impact.
Founded in 2017, we operate globally with offices in Sydney, Los Angeles, San Francisco, Berlin, and Oxford. Our teams bring together technical and multi-disciplinary expertise across the product lifecycle, and we’re hiring talent to help scale every part of the business. We work quickly to turn cutting-edge science into deployable technology.
In 2024 we raised US$113 million in Series B funding, the largest aggregate investment for a quantum software company. Six months later we delivered the first commercial quantum advantage with Ironstone Opal, our field-validated quantum navigation solution for defense and industry.
At Q-CTRL, we prioritize outcomes over hours. We offer flexibility, equity potential, and competitive benefits that reflect our high-performance culture. If you’re ready to help shape the future of quantum, we’d love to hear from you!
Please be advised that our communications will only come from the @q-ctrl.com domain. All our active job postings are available on our company website.
To recruitment agencies, we do not accept unsolicited branded profiles and are not responsible for any fees related to unsolicited resumes.