L0 Muon Trigger Development (SW&FW) (EP-ATL-TRG-2026-122-GRAP)

Job Description

The objective of the project is to introduce novel selections in the ATLAS trigger to enhance performance in challenging parts of the parameter space, including exotic signatures and rare Standard Model processes, and to improve the robustness of the muon trigger.

Together with Nex Gen doctoral students, the selected candidate will work on the design of new algorithms for the L0 muon trigger.

This position is part of the Next Generation Trigger programme.

• Your Responsibilities
• Develop new algorithms to improve the robustness of the L0 Muon trigger against changing detector conditions and enhance triggering for challenging signatures, such as exotic long‑lived particles.
• Identify detector scenarios and challenging trigger signatures, and develop new algorithms, including the use of AI/ML, to target them using tools such as simulations.
• Collaborate closely with ATLAS trigger experts and the TDAQ upgrade community.
• This role includes team supervision responsibilities.

Your Profile

• Experience in AI/ML.
• Experience with trigger systems.
• Experience with FPGAs and digital electronics.

Skills

• Strong background in collider physics.
• Strong software skills.
• Excellent communication and presentation skills.
• Experience with student supervision, or willingness to supervise students.
• Spoken and written English, with a commitment to learn French.
• Eligibility Criteria
• You have a professional background in Ph D in Physics or CS or equivalent (or a related field) and have either:
• Master's degree with 2 to 6 years of post‑graduation professional experience;
• Ph D with no more than 3 years of post‑graduation professional experience.
• You have never had a CERN fellow or graduate contract before.
• Additional Information

Job closing date

Contract duration: 24 months, with a possible extension up to 36 months maximum.

• Working hours: 40 hours per week
• Job flexibility: Fully Onsite
• Target start date: 01-October-2026

This position involves

• Work during nights, Sundays and official holidays, when required by the needs of the Organization.
• Job Reference
• EP-ATL-TRG- -GRAP
• Field of Work
• Applied Physics
• Benchmark job
• Applied Physicist
• Global Benefits
• A monthly stipend between 6 372–7 004 Swiss Francs per month (tax free) depending on your degree.
• 30 days of paid leave per year plus 2 weeks annual closure.
• Coverage by CERN’s comprehensive health insurance scheme (for yourself, your spouse and children), and membership of the CERN Pension Fund.
• Family, child and infant monthly allowances depending on your individual circumstances.
• A relocation package (installation grant and travel expenses) depending on your individual circumstances.
• Possibility to extend your contract up to 36 months.
• On‑the‑job and formal training including language classes.
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