Applied Physicist for ATLAS Trigger Reconstruction (EP-ATL-OSW-2026-124-GRA at CERN

Geneva, Geneva, Switzerland -

Full Time

Start Date

Immediate

Expiry Date

05 Oct, 26

Salary

7004.0

Posted On

07 Jul, 26

Experience

2 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Collider Physics, AI/ML, Trigger Systems, Software Development, Communication, Presentation Skills, Student Supervision, English Proficiency

Industry

Research Services

Description

Job Description The goal of this project is to introduce innovative selections into the ATLAS trigger system to improve the identification of events in difficult regions of the parameter space, including rare Standard Model processes and exotic signatures. In collaboration with NextGen doctoral students, the selected candidate will contribute to the development of the trigger menu for the High-Luminosity Large Hadron Collider (HL-LHC) era. The position is part of the Next Generation Trigger programme. Your responsibilities Design new triggering algorithms and strategies, including alternative data flows and ML/AI-based approaches. Develop tools to support HL-LHC trigger menu studies. Simulate trigger selections and estimate trigger rates using data and HL-LHC Monte Carlo samples. Ensure that proposed solutions meet trigger menu constraints on processing resources and rate limits. Implement solutions within the central ATLAS trigger software. Collaborate closely with ATLAS trigger and TDAQ upgrade experts. This role includes team supervision responsibilities. Your profile Strong background in collider physics. Experience with AI/ML and trigger systems. Skills Strong software skills Excellent communication and presentation skills. Experience with, or willingness to supervise, students. Spoken and written English, with a commitment to learn French. Eligibility criteria: You have a professional background in PhD in Physics or a related field, and have either: a Master's degree with 2 to 6 years of post-graduation professional experience; or a PhD 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: 22.07.2026 at 23:59 CEST. 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-OSW-2026-124-GRAP Field of work: Experimental Physics Benchmark job: 200140 - Applied Physicist Global Benefits A monthly stipend between 6372-7004 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. Overview of CERN - Discover a world where the impossible is made possible! At CERN, the European Organization for Nuclear Research, we are pushing the frontiers of science and technology. Our groundbreaking work brings together not only physicists but also a diverse range of professionals from engineering, technical, scientific, and administrative fields. Together, we foster an environment where innovation and collaboration thrive. Every day, we face exciting new challenges and opportunities to contribute to cutting-edge research that shapes our understanding of the universe. We meet these challenges through the diverse perspectives within our teams, ensuring every contribution is valued and driving our shared sense of inclusion and purpose. Diversity is a core value of CERN since its foundation, and it remains central to our mission and continued success. If you are ready to be part of a dynamic, inclusive community pushing the boundaries of knowledge, CERN is the place where your curiosity and skills can thrive. Be part of our mission to uncover what lies at the heart of the universe! TAKE PART! More information about us, here: careers.cern

Responsibilities

Design and implement innovative triggering algorithms and ML/AI-based approaches for the ATLAS trigger system during the HL-LHC era. Collaborate with experts to simulate selections, estimate rates, and supervise doctoral students.