Software Engineer for Quantum Key Distribution - DTU Physics

Do you want to bring quantum technology into action by building a quantum key distribution systems? Then we have a great opportunity for you!

Quantum key distribution (QKD) is a quantum technology that enables data encryption with future proof security in contrast to current cryptographic methods which can be broken by quantum computers. This makes QKD an important technology to protect governmental communication, critical infrastructure and financial data.

Our motivation is to boost our continuous-variable QKD systems to higher speed and larger distances. The work is part of the EU project QCI.DK and the IFD project CyberQ where our team of researchers, hardware and network engineers works on deploying QKD in a metropolitan network in Copenhagen and on advanced QKD systems using squeezed states of light.

The job
As a software engineer, you will have the opportunity to develop software for our continuous-variable quantum key distribution system. You will: 

• interface hardware and develop a software controlling the key distribution process and managing the subsystems
• developed QKD data processing software (Rust)
• develop a monitoring interface (SNMP)
• continue the development of our information reconciliation library (Rust, C++ and CUDA)
• work with a team of engineers with backgrounds in electrical, quantum and telecommunication engineering

Our expectations of you
To be able to thrive in the position, we imagine that you have:

• Proficiency in software development using Rust, C++, CUDA, and Python.
• Experience with developing high-performance applications and optimizing code for efficiency.
• A solid understanding of algorithms, data structures, and system design.
• Hands-on experience with GPU programming.
• A track record of working on complex projects from conception to deployment.

Furthermore, it is an advantage if you are familiar with Linux, Linux services, dbus and git.

Moreover, you should be:

• Highly motivated and dedicated to developing Europe’s best QKD system.
• Willing to work in larger teams and collaborate effectively with colleagues.

Professional competencies that would be a great addition to our team include:

• Strong problem-solving skills and the ability to think critically and creatively.
• Excellent communication skills, both written and verbal, to articulate complex ideas clearly.

Personal qualities that we value:

• A proactive and positive attitude towards challenges and new opportunities.
• Adaptability and flexibility in a dynamic work environment.
• A collaborative mindset and the ability to work well with diverse teams.

What we offer in return
We offer an interesting and challenging job in an international atmosphere with the focus on research, teaching, innovation and scientific advice for the benefit of the surrounding community. We place emphasis on a high level of professionalism among our staff, so skills development is an integral part of our organization. We offer a great flexibility in the position. In the area of technical and natural sciences, DTU is one of the leading research and education institutions in Europe.

You will be working in the Quantum Physics and Information Technology Section of DTU’s Department of Physics. Our section offers a culturally rich environment comprised of around 40 people with diverse backgrounds.

Salary and appointment terms
The appointment will be based on the collective agreement with the Danish Confederation of Professional Associations. The allowance will be agreed upon with the relevant union. The period of employment is 2 1/2 years.

Application and contact
Please submit your online application no later than 10 March 2025 (23:59 Danish time) . Open the “Apply online” link, fill out the form and attach your motivated application, CV and exam certificates. 

If you would like additional information about the position, please contact Associate Professor Tobias Gehring, [email protected] . 

Applications received after the deadline will not be considered.

All interested candidates irrespective of age, gender, disability, race, religion or ethnic background are encouraged to apply. As DTU works with research in critical technology, which is subject to special rules for security and export control, open-source background checks may be conducted on qualified candidates for the position.

DTU Physics is a modern department with an emphasis on strong professionalism. We want to be elitist in physics and we demand a lot of our employees and students. We focus on research, teaching, and innovation in areas with fundamental challenges and application potentials. We cover areas such as surface physics, materials science, computer-based material calculations, fluid dynamics, biophysics, plasma physics, and quantum physics, and we encourage collaboration between the areas. Applications range from sustainable energy and the materials of the future to quantum technology.

Technology for people
DTU develops technology for people. With our international elite research and study programmes, we are helping to create a better world and to solve the global challenges formulated in the UN’s 17 Sustainable Development Goals. Hans Christian Ørsted founded DTU in 1829 with a clear mission to develop and create value using science and engineering to benefit society. That mission lives on today. DTU has 13,500 students and 6,000 employees. We work in an international atmosphere and have an inclusive, evolving, and informal working environment. DTU has campuses in all parts of Denmark and in Greenland, and we collaborate with the best universities around the world.