KTH Royal Institute of Technology
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Doctoral Student in Cryptology KTH Royal Institute of Technology in Sweden
Degree Level
PhD
Field of study
Computer Science
Funding
Available
Deadline
Sep 16, 2026
Country
Sweden
University
KTH Royal Institute of Technology
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About this position
KTH Royal Institute of Technology is advertising a doctoral position in cryptology within the research area of computer science. The position is connected to the Center for Cyber Defense and Information Security (CDIS), where KTH collaborates with the Swedish Armed Forces and other authorities to strengthen research in cyber defense and cybersecurity. The project is especially focused on advanced cryptologic research relevant to the challenges raised by quantum computing and the protection of critical societal functions.
The doctoral student will work in a unique setup combining academic research at KTH with practical placement at Must (the Swedish Armed Forces’ intelligence and security service), giving access to leading experts in cryptology and information security. The role is described as 80% doctoral studies at KTH and 20% placement at Must, offering an unusual blend of theory and practice in a strategically important field.
The project is supervised by Johan Håstad and Martin Ekerå (proposed supervisors, final decision at admission). The research environment is strongly connected to cryptography, cyber defense, information security, and quantum-era cryptographic challenges. The job information also highlights that the position may be security-classified, in which case a security clearance process will apply.
Eligibility: applicants must meet the formal requirements for admission to doctoral education at KTH, including an advanced degree or equivalent, or at least 240 higher education credits with at least 60 at advanced level. In addition, Swedish citizenship is required, Swedish language skills in both speech and writing are required for daily work, and English proficiency equivalent to English B/6 is mandatory. Selection will give significant weight to personal qualities, including independence, collaboration, professionalism, and the ability to handle complex problems.
Funding and employment: this is a doctoral employment with a monthly salary according to KTH’s doctoral salary agreement. The appointment is temporary and normally lasts up to four years full-time for doctoral study. The successful candidate is employed as a doctoral student only after admission to the doctoral programme.
Application deadline: 2026-09-16 at 23:59 (CET/CEST). Applications must be submitted via KTH’s recruitment system and include degree certificates and transcripts, proof of language requirements, a CV, a short motivation letter, and representative publications or technical reports.
Funding details
Available
What's required
Applicants must have basic eligibility for doctoral education: a degree at advanced level, at least 240 higher education credits with at least 60 credits at advanced level, or equivalent knowledge acquired in Sweden or abroad. Swedish citizenship is required. The candidate must be able to use Swedish in both speech and writing for daily work. English proficiency equivalent to English B/6 is also required. The selection places substantial weight on personal qualities such as the ability to work independently, collaborate with others, maintain a professional approach, and analyze and work with complex issues.
How to apply
Apply through KTH’s recruitment system. Include degree certificates and transcripts, proof of language requirements, a CV, a cover letter describing your academic interests and motivation, and representative publications or technical reports. Make sure the application is complete before the deadline.
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