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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

Quality Assurance (QA) Engineer
Location: Australia

About the Position

We are looking for a Quality Assurance (QA) Engineer to develop and execute exploratory and automated tests to ensure product quality. The QA Engineer will be responsible for testing and reporting on whether the product is doing what it is designed to do consistently, from the customers’ perspective. This includes ensuring the developed product meets customers’ requirements.

Key Responsibilities

  • Review requirements, specifications, and technical design documents to provide timely and meaningful feedback
  • Create effective test matrix and test cases from requirements using various testing techniques
  • Update, create and maintain regression test cases using automated scripts
  • Maintain the QA Automation Framework
  • Perform system integration testing manually as well as through test automation scripts
  • Report bugs and errors clearly with supportive details in JIRA
  • Work with cross-functional teams to ensure quality throughout the software development lifecycle
  • Provide inputs to Test lead for test planning, strategy & effort estimation
  • Assist with Root Cause Analysis and troubleshooting of defects
  • Stay up to date with new testing tools and test strategies


  • Qualification in Computer Science, Engineering, or related field preferred
  • Minimum 3 years experience as a Quality Assurance Engineer

Nice to Haves

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

  • Experience in firmware testing
  • Experience with performance and/or security testing is a plus
  • Knowledge and/or experience in cloud computing platforms such as AWS/Azure 

Technical Skills

  • Proficient with at least one programming language – Python (Preferred), Java. Exposure to other programming languages is desirable – C, SQL, HTML/JavaScript
  • Extensive experience in writing test framework and processes including test plans/strategy, advanced scripting, execution, and reporting of critical web-based applications and APIs
  • Solid skills with UI automation using Selenium Web driver UI or any similar tools
  • Solid skills in writing automation tests building pipeline jobs to integrate them on CI pipelines like Jenkins
  • Good understanding of GIT and version control
  • Exposure to tools like Eclipse is a plus
  • Experience in system integration testing in different Operating Systems (Linux, Windows)
  • Familiar with networking and cyber security concepts 

Soft Skills

  • Strong communication skills, adaptable to technical and non-technical audiences
  • Well-developed organisational skills including excellent time management skills plus the ability to prioritise workload in response to time-critical targets
  • Initiative including the ability to work flexibly in a team and work comfortably without direct supervision
  • Attention to detail, yet able to step back and see the big picture when the situation requires
  • Excellent analytical & problem-solving skills and out-of-the-box thinking abilities

Benefits of Working at QuintessenceLabs

  • QuintessenceLabs encourage and respect diversity in the workplace and work-life balance.
  • Learning and development opportunities
  • Opportunity to work with great people in an inclusive environment
  • Office benefits such as kindle library, basic breakfast supplies, and barista coffee
  • Newly fitted-out office, with a relaxed, friendly work environment

How to Apply

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