Lead Simulation Physicist - High-Performance Detector Simulation

Responsible for developing, maintaining, and validating physics simulation software for particle interactions in high-energy physics detectors. Focuses on detector and physics simulations for GPU and parallel computing architectures to support High-Luminosity LHC and future experiments.

Responsibilities

• Further develop the Geant4-based GPU-enabled component, AdePT, ensuring its smooth integration into the LHC experiments' software frameworks, and lead the consolidation and implementation of key components, possibly including relevant physics processes.
• Design and run regression tests comparing GPU results against CPU reference physics, ensuring no degradation in physics fidelity.
• Coordinate with LHC experiments (ATLAS, CMS, LHCb, ALICE) and FCC studies to prioritise related developments.
• Contribute to the overall project organisation, including work planning, organising workshops and training activities, and representing the project and its vision.
• Engage with Geant4’s worldwide user community, foster collaboration within the SFT group, the EP department, CERN, and external partners, and encourage contributions from laboratories and universities.
• Supervise team members and coordinate tasks relevant to the Geant4 project.

Requirements

• PhD or equivalent relevant experience in the field of Physics or a related field.
• Demonstrated experience with Monte Carlo techniques applied to particle transport simulation, particularly their implementation using modern software technologies and hardware architectures such as GPUs.
• Proficiency in scientific computing and deep knowledge of advanced programming.
• Knowledge in large collaborative software projects, particularly Monte Carlo simulation toolkits, relying on continuous integration, code reviews, as well as issue-based workflows.
• Experience with tools and methods that support all phases of the life cycle of large scientific code bases particularly software design, development, testing, and performance optimisation.
• A strong track record of scientific publications and high-level communication (for example, through invited conference presentations).
• Experience in supervising and managing external contributors would be considered an advantage.

Skills

• Monte Carlo Simulation
• Particle transport simulation
• GPU computing
• Scientific Computing
• Advanced programming
• Software Design
• Software Development
• Software Testing
• Performance Optimization
• Continuous Integration
• Code Reviews
• Issue-based workflows
• Large scientific code bases
• Physics simulation software
• Parallel Computing
• Supervising contributors
• Scientific Article Publication
• Conference presentations

Languages

English, French