Job Advertisement: Researcher in Signal Intelligence

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, including 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 analysis. FOI's research plays a key role in building Sweden's defence capability.

Do you want to help develop the next generation of signal intelligence systems for radio communication? Do you want to work with advanced applied research and development? Then FOI could be your new workplace! We offer a balanced work life, a developing work environment, and a socially important job!

About the Position

You will work at the forefront of technology and drive theoretical applied development. Our clients ask us to challenge the limits of physics, which means we develop solutions that not only use the latest technology but also future technology. Your tasks will include research and technology development of methods and algorithms in our development projects. This may involve estimating unknown parameters from radio signals using advanced signal processing and developing new methods.

You will have excellent opportunities to follow an idea from sketch to finished system, while also keeping up with academic research in your field. Since our unit covers a wide range of technologies, there are great opportunities for varied tasks, including close contact with interested recipients within the Armed Forces.

We work in project form where your contribution becomes a significant part of the whole, and there is a real opportunity to influence the results. Since we test our systems in realistic environments with field measurements, there is also the possibility to work outside the everyday office and lab environment.

About the Unit

You will be part of the unit for Signal Intelligence against Radio Communication, which belongs to Cyber Defence and Command Technology. Together with colleagues in the Radio operational area, we work with the Armed Forces' needs regarding electronic warfare and robustness aspects for radio applications.

The unit's mission aims to develop reconnaissance methods that strengthen situational awareness, locate the opponent's radio transmitters, and thereby support the disruption of the opponent.

We work with the entire chain from advanced algorithms to hardware prototypes, which are often tested in real environments. We are close to our clients but also have good contacts in the academic world and the defence industry.

Do you have the skill profile we need?

Requirements

We are looking for someone who:

• is a technical doctor with a focus on signal processing or equivalent. You may be newly graduated or have a few years of experience.
• has good knowledge of Swedish and English in both speech and writing.

As an employee at FOI, you will have a job with great freedom, the opportunity to influence, and space for your own initiatives. Therefore, you need to be structured and self-driven. Since the work is project-based, you need to have good collaboration skills, enjoy developing solutions together with others, and be goal- and result-oriented.

Meritorious

It is an advantage if you have:

• experience from the Armed Forces, defence industry, or other defence-related authorities.

What do we offer you?

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. We offer a unique workplace where you have the opportunity to work on what is important for total defence and society as a whole. The research is applied both within defence authorities and among civil actors and plays a crucial role in building a relevant and effective defence capability.

We consciously work for a good work 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.html)

The position is a permanent employment that may begin with a six-month probationary period.

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

Welcome with your application in the form of a CV and cover letter via the application button by February 25, 2026!

For more information about the position, please contact Christian Gustavsson. Union representatives are Niclas Wadströmer (Saco-S) and Anette Frid (OFR/S – ST) All can be reached at 08-555 030 00.

As the employment is placed in a security class, Swedish citizenship is required. A security screening with a background check will be conducted before employment according to the Security Protection Act (2018:585). For the security screening, certified copies of relevant education and service certificates will be requested.

FOI is an authority, and submitted application documents become public documents that can be disclosed to outsiders upon request according to the Public Access to Information and Secrecy Act.

Offers from recruitment companies are not welcome.