Production Test Engineer

Job Description

Do you want to work with cutting-edge quantum technology? Do you have a solid technical background and do you work with a lot of perseverance and accuracy? Do you want be part of a diverse and dynamic scale-up company? Then we invite you to read on and apply!

IN SHORT Single Quantum () makes the world's fastest and most-sensitive light-detection systems limited only by the laws of physics! As a scale-up company, we are growing steadily in both size and presence worldwide. We are looking for a dedicated engineer to join our test team as aSystem Test Engineer in our optics lab. We are looking for a full-time engineer to be based at our headquarters in Delft, preferably starting in February 2026.

Note:
Due to the holiday season, do expect some delays in our communication.

As our Production Test Engineer (System Test Engineer), you will be responsible for the testing, characterization, and validation of our flagship superconducting nanowire single photon detector (SNSPD) systems, to prepare them for our wide range of customers. You will be joining an international and innovative environment and will be working in our Production Labs in Delft, alongside our team of physicists and engineers.

• Perform optical and electrical characterization of SNSPDs by using a variety of lab equipment.
• Execute quality control and performance validation of our complete systems.
• Troubleshoot and problem solve any issues that arise.
• Check and maintain characterization setups to ensure accuracy.
• Mount detectors and check the performance of the cryostats.
• Regular communication with Sales teams to meet deadlines and quality expectations.
• Be a part of the feedback cycle involving Detector Testing, Cryostat and Driver Assembly, and Development teams to ship the best single photon detectors possible.

You will work closely with other team-members, but the actual testing is performed independently. You will need real tenacity and great accuracy to follow through. You will play an important part in getting our systems on time to our scientific customers all over the world, and in helping the company reach its detector quality goals.

As we scale up, our processes need to evolve to improve efficiency and effectiveness in the lab, as well as improve quality where possible. We would also ask you to contribute to these processes.

We are looking for someone who has...

• A Bachelor’s or HBO degree in the field of Physics, Optics, Photonics, Nanotechnology, or equivalent;
• A precise working attitude;
• Great communication and teamwork skills;
• A high sense of commitment and responsibility;
• Good time management skills;
• Confidence in working independently;
• Confidence in practical work;
• Fluent in English;
• And a passion for physics and unique technologies.

The following are a plus:

• Experience with laser set-ups;
• Experience with fiber-based optics;
• Experience with Python and with automation;
• Experience with nanofabrication;
• Experience with cryogenics;
• Knowledgeable about (quantum) optics;
• Work experience in a physics lab or clean room.

We hope for the candidate to start in February 2026.

Note:
Due to the holiday season, do expect some delays in our communication.

• A collaborative, international team working at the forefront of high-tech innovation, with colleagues from various (and international) background.
• Salary in accordance to the CAO (Collective Labour Agreement) Metalelektro, complemented by secondary benefits.
• Comfortable workplace perks, including coffee, fresh fruit, and weekly catered lunches.
• A solid retirement plan to support your future (provided by PME).
• Up to 40 vacation days per year (based on full-time employment).
• Plenty of space to share your ideas and take initiative—your voice matters from day one.
• A company culture that genuinely supports personal growth and professional development.
• Comprehensive social security benefits in accordance with the Metalelektro Collective Labor Agreement (CAO Metalelektro).

If the job description and Single Quantum excites you, we encourage you to submit your CV as well as a motivation or cover letter explaining why you think you're a good fit for the position, along with what attracts you to the position.

At Single Quantum, we celebrate diversity and are committed to creating an inclusive environment for all employees. We are proud to be an equal opportunity workplace.

If you have any questions before applying or would like to have a general conversation about Single Quantum, you can contact our HR Business Partner, Jacqerina Jarad on or email to