SW & FW Developer / Physicist - European Organization for Nuclear Research (Geneva)

About this position

The summary below is published by European Organization for Nuclear Research on the official vacancy notice. Our own analysis — salary realism, comparable openings, career trajectory, language profile — follows further down the page.

Key responsibilities

According to the vacancy notice, the role centres on the following duties:

• Develop and maintain pipelines for end-to-end ML algorithm development, optimization, and implementation into Global firmware framework
• Support ATLAS Global community in using these pipelines
• Contribute to Global hardware integration activities at CERN
• Explore, develop, and optimize novel ML algorithms for Global
• Play a leading role in developing trigger menu and strategy for HL-LHC programme start
• Explore, develop, and optimize anomaly detection, trigger-level analysis, and data scouting concepts in ATLAS
• Explore potential and applicability of novel industry technologies to enhance ATLAS Global system
• Team supervision responsibilities

Are you eligible?

Check these requirements from the notice before investing time in an application:

• Education: PhD in Physics, Computer Science or related field, or Master's degree
• Experience: Master's degree with 2 to 6 years of post-graduation professional experience, or PhD with no more than 3 years of post-graduation professional experience
• Languages: English (spoken…), French (commitm…)
• Key skills: Modern C++ and Python programming techniques, Writing and testing algorithms for data processing and filtering, Knowledge of hardware description languages (HDL) or high-level synthesis (HLS) tools and concepts, Strong track record in developing novel ML algorithms in particle physics experiments, Strong background in computational statistics, Good knowledge of digital electronics for data acquisition
• Eligibility: You have never had a CERN fellow or graduate contract before

Contract and working arrangements

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

Working arrangements: Fully Onsite.

Hiring unit: CERN Data Processing team within ATLAS Trigger Section.

Position details

Reference

EP-ATL-TRG-2026-123-GRAP

Last Verified

20 July 2026

Position overview

This is the official EU Careers listing for SW & FW Developer / Physicist at CERN based in Geneva (Other). The vacancy reference is EP-ATL-TRG-2026-123-GRAP. The role falls under the Research domain.

The Global Hardware Trigger is part of the upgrade to the Trigger and Data Acquisition that ATLAS plans to deploy for the High-Luminosity LHC programme (HL-LHC). It is a custom hardware, real-time data processing and filtering system, currently under construction, that uses fine-granularity detector information and will employ advanced pattern recognition algorithms.

These algorithms will be implemented on state-of-the-art field programmable gate array (FPGA) systems, which employ novel system-on-chip architectures capable of high-speed machine learning (ML) inference. You will join the CERN Data Processing team within the ATLAS Trigger Section as part of the [Next Generation Trigger](https://cernbox.cern.ch/pdf-viewer/public/sjvCAmaAPTwr7tJ/CERN%20NextGen%20Triggers%20Proposal%20V1_2_dist.pdf) programme.

Your responsibilities

* Develop and maintain pipelines to streamline the end-to-end process of developing, optimising, and implementing ML algorithms into the Global firmware framework, and support the ATLAS Global community in using these pipelines. * Contribute to Global hardware integration activities at CERN. * Explore, develop, and optimise novel ML algorithms for Global, and play a leading role in developing the trigger menu and strategy for the start of the HL-LHC programme. * Explore, develop, and optimise concepts of anomaly detection, trigger-level analysis, and data scouting in ATLAS using the Global system. * Explore the potential and applicability of novel industry technologies (e.g., AMD AI Engines) to enhance the reach of the ATLAS Global system. * This role includes team supervision responsibilities. * More information [here](http://https//nextgentriggers.web.cern.ch/t21/).

Your profile:

* Strong track record in developing novel ML algorithms, especially in the context of particle physics experiments. * Strong background in computational statistics. * Good level of knowledge of digital electronics for data acquisition.

Skills:

* Modern C++ and Python programming techniques. * Writing and testing algorithms for data processing and filtering. * Knowledge of hardware description languages (HDL) or high-level synthesis (HLS) tools and concepts is highly desirable. * Spoken and written English, with a commitment to learn French.

Eligibility criteria:

* You have a professional background in PhD in Physics, Computer Science (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.

Job closing date: 20.07.2026 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-TRG-2026-123-GRAP

Field of work: Applied 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](https://careers.cern/)

Application timeline

This vacancy was first listed on 7 July 2026, 15 days ago.

No closing date is published in the source feed for this position. EU vacancies typically remain open for four to eight weeks; check the official vacancy notice for the cut-off date and time.

Last verified against the EU Careers feed on 20 July 2026 (2 days ago).

Where to learn more

For headcount, mission, and other open vacancies at CERN see the CERN institution page; for the cost of living, correction coefficient, and other postings in Geneva see our Geneva location page; for related vacancies in the Research field browse our Research domain page.

New to EU careers? Our beginner's guide walks through entry routes, EPSO competitions, and what to prepare. For application logistics see application tips and EPSO competitions.