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QuintessenceLabs Careers

Why Work for QuintessenceLabs?

QuintessenceLabs, a world leader in quantum cybersecurity, offers challenging and exciting careers for talented and creative professionals who are excited to tackle difficult problems. Our team members welcome responsibility and are driven to deliver real products to the market. We have a diverse, inclusive, and highly skilled team including specialists in software development, hardware engineering and quality assurance.

We have just completed a major funding round and are poised to exploit the rapidly growing market for quantum technologies.

Challenging work
at the leading edge
of cybersecurity
Small and
highly skilled
Options for
remote or
flexible work

Current Positions Available

Quantum Optics Researcher
Location: Australia

About the Position

As a quantum optics researcher at QuintessenceLabs, your work will cover ongoing R&D on our Quantum Key Distribution product line.

Depending on your experience, you may also get a chance to work on our Quantum Random Number Generator products. You will work as part of a small, multi-disciplinary team (5-10 people) to improve the quality of our product and increase its speed, distance, stability, and manufacturability while maintaining security.

You will interact with specialists outside your group from the roles of logistics, quality assurance, and product support. You will work with remote customer sites to support and measure proof-of concept deployments of first-generation products and feed the results into improved designs.

Your ultimate goal will be to give people tools to protect their information and systems in an increasingly challenging world.


  • A citizen of Australia, the U.S., United Kingdom, or Canada
  • Willing to move to Canberra and work on-site in our lab facility
  • PhD in experimental optics, quantum-optics, optical communication systems or related field, or
    equivalent experience
  • Experience with scientific programming languages such as Matlab, Mathematica, or Python
  • Some experience with design and maintenance of complex experimental systems including
    optical, electronic and computerised components
  • Familiar with laser safety standards and safe work practices
  • Excellent oral and written English language skills and a demonstrated ability to work
    collaboratively in a multi-disciplinary team

Nice to Haves

Experience with one or more of the following concepts is not required, but will help you stand out from the crowd:

  • Background in Quantum Optics Theory 
  • As much experience as possible with:
    •  Electro-optical modulators and homodyne receivers
    • Optical phase-locked loops and/or intradyne receivers
    • Building custom detectors
    • Fibre-optics systems
    • RF electronics components such as amplifiers, filters, mixers, …
    • System optimisation
    • Digital Signal Processing (DSP)
    • Packaging of optical systems
    • Use of the Linux operating system
    • The C programming language

Benefits of Working at QuintessenceLabs

  • Work on cutting-edge technology and see it deployed and operating in real-world settings
  • Continue to push the state of the art in CV-QKD systems
  • Learn from experts in QKD theory, information theory, error correction, electronics, and
    software development
  • Work with a small company with professional, friendly colleagues
  • Our lab is located at the beautiful Brindabella Business Park campus, including cycling and gym
    facilities, ample parking, childcare centre, sports grounds / tennis courts and plentiful green
  •  We offer flexible working arrangements when possible
  • Competitive remuneration package for the right candidate

How to Apply

Email your resume and a brief cover letter addressing the key criteria we are looking for to