Job Advertisement: Researcher in Flight Signatures

The Total Defence Research Institute (FOI) is a government agency conducting world-leading research in defence and security to support Sweden's military and civil defence. The research spans several areas, such as underwater, cyber defence, space, electronic warfare, sensor systems, civil defence, CBRNe (chemical, biological, radiological, nuclear, and explosive materials), military platforms including weapons and protection, as well as security policy analyses. FOI's research plays a key role in building Sweden's defence capability.

About the Position

For future military aircraft platforms, the trade-off between signature and traditional flight performance becomes very important. At FOI, research and technology development is conducted in the field of flight signatures.

This position is for you who have experience in multiphysics and technical calculations within the signature area. In your work, you will use commercial software to perform signature calculations for our clients. You will develop, maintain, and distribute FOI's in-house developed calculation tools for radar signatures. The work is conducted independently in collaboration with other aviation-related activities at FOI.

About the Unit

FOI serves as a government, industry-independent expert resource for the Armed Forces, the Government Offices, and other authorities. You will be part of the Flight Technology unit, where we conduct well-founded analyses, formulate and study important issues and trends, foresee possible developments, and translate this into knowledge, tools, and capabilities that meet the needs of our clients today and in the future. The Flight Technology unit is part of the Defence Technology department. Please read more about what we do: Defence Technology.

Do you have the competence profile we need?

Requirements

We are looking for someone who;

• is a civil engineer or equivalent in technical physics with a focus on computational physics,
• has experience in using and developing software for radar signature calculations,
• has theoretical knowledge of numerical methods for electromagnetics (finite element, finite difference, and physical optics) and programming, which you can demonstrate through work experience or completed university studies,
• has a good ability to communicate clearly and concisely in both spoken and written form, in Swedish as well as in English.

To succeed in the role, it is important that you have good collaboration skills, are self-driven, and push your work forward, as well as having strong problem-solving analytical skills. We place great emphasis on your personal qualities.

Meritorious

It is meritorious if you have;

• industry experience in the aviation or defence sector.
• a doctoral degree,
• experience working with electromagnetic problems applied to cavities.

What do we offer you?

We offer you stimulating and challenging tasks in a knowledge-intensive research environment. Our operations are needs-driven and primarily developed in collaboration with our main client, the Armed Forces and FMV. The operations are long-term, which provides good opportunities to follow the research and develop deep knowledge in your area of expertise. There are also good opportunities for international contacts and collaborations in your field.

FOI offers a unique workplace, where you have the opportunity to work on what is important for both total defence and society as a whole. FOI is a government agency under the Ministry of Defence and is one of Europe's leading research institutes in defence and security.

We consciously work for a good working environment with a good balance between work and private life. In addition, we offer a range of benefits. Read more about what it is like to work with us: Work with us (https://www.foi.se/jobba-hos-oss).

The position is a permanent employment starting with a six-month probationary period.

Do you want to help find answers for a safer world?

Welcome with your application in the form of a CV and cover letter via the application button by February 16, 2026.

For more information about the position, you are welcome to contact Mattias John Quas. Union representatives are Staffan Lindgren (Saco-S) and Magnus Lindström (OFR/S – ST). All can be reached at 08-555 030 00.

As the position is classified, Swedish citizenship is required. A security clearance with a background check will be conducted prior to employment in accordance with the Security Protection Act (2018:585). For the security clearance, certified copies of relevant education and service certificates will be requested.

As we are a government agency, submitted application documents are considered public records and may be disclosed to third parties upon request in accordance with the Public Access to Information and Secrecy Act.

Offers from recruitment companies are not welcome.