The Helsinki Institute of Physics invites applications for a
DOCTORAL RESEARCHER AND POSTDOCTORAL RESEARCHER IN EXPERIMENTAL PARTICLE PHYSICS in the HIP CMS experiment group starting on September 2025, or as agreed, in a fixed-term contract until 31.8.2029.

DOCTORAL RESEARCHER POSITION

The doctoral researcher will work on the implementation of a general JEC online calibration framework with DQM-type monitoring, and on a related physics analysis, for instance HLT scouting jet analysis of boosted Z->bb or H->bb, or a Higgs boson measurement or search for new physics in hadronic final states where performance is critical for sensitivity. A 6-12 -month presence at CERN is foreseen in 2026 to familiarize oneself with the software environment and to start implementation already during the last data-taking months of LHC Run-3. Length of the contract is until 31.8.2029.
We are seeking a talented and motivated doctoral researcher (PhD student) who recently completed their MSc degree in the field of experimental particle physics, applied physics, computer science or in a closely related field. MSc students near the completion of their degree are also encouraged to apply.

The candidate should have:

• Willingness to pursue a PhD degree in experimental particle physics
• Good skills in written and spoken English
• Interest in performing research on topics close to the project scope
• Researcher’s mindset and ability for independent creative thinking
• Skills in computer programming and experience with Linux and possibly machine learning

The appointee should either already have the right to pursue a doctoral degree at the University of Helsinki by the start of the appointment or apply for the right and obtain it within the probationary period of six months of their appointment. If the candidate does not already have the right to pursue a doctoral degree at the University of Helsinki, it must be applied for separately. Please find more information how to apply to doctoral programmes and the requirements for pursuing a doctoral degree at the University of Helsinki.
The candidate will be able to attend international conferences and present their scientific work in local and international meetings. As an employee of the University of Helsinki, the researcher will receive occupational health care, and will be entitled to sports facilities, and opportunities for professional development such as CERN Data-analysis School (CMSDAS) and CERN School of Computing (CSC). The employment contract will include a probationary period of six months.

POSTDOCTORAL RESEARCHER POSITION

The postdoctoral researcher will work on the general JEC online calibration framework, focusing on JEC global fit, exploiting the various channels and JEC validation. A 6-12 -month presence at CERN is foreseen in 2026 to familiarize with the software environment and to start implementation already during the last data-taking months of LHC Run-3. Length of the contract is until 31.8.2029.
We are seeking a talented postdoctoral researcher, who has completed their doctoral degree in the field of experimental particle physics or a closely related field, and is looking forward to challenging projects, which they can lead and develop. Work duties include performing research, writing articles, supervising M.Sc and possibly PhD students as well as contributing to teaching in the Master’s Programme in Particle Physics and Astrophysical Sciences.

The candidate should have:

• A good knowledge of experimental particle physics, previous expertise in jet energy corrections, trigger systems and calibration is considered an asset
• Strong programming skills
• Interest in performing research on topics close to the project scope
• Excellent skills in written and spoken English
• Researcher’s mindset and ability for independent creative thinking

The candidate will be able to attend international conferences and present their scientific work in local and international meetings. As an employee of the University of Helsinki, the researcher will receive occupational health care, and will be entitled to sports facilities, and opportunities for professional development. The degree requirement must be met by the beginning of the employment. The employment contract will include a probationary period of six months.

Please refer the Job description for details