Physics Simulation Engineer

Flexcompute is an early-stage technology startup founded by engineers from MIT and Stanford. It develops ultra-fast, GPU-native physics simulation and AI-powered engineering technology used by more than 250 companies and academic institutions to design aircraft, vehicles, chips, and photonic systems. The company works at the frontier of physical modelling, numerical algorithms, GPU computing, high-performance computing, AI, and engineering automation, aiming to make high-fidelity engineering simulations practical for real design decisions.

• Completed or near completion of an MSc or PhD in physics, aerospace engineering, mechanical engineering, computational science, applied mathematics, computer science, or a related technical field.
• Strong foundations in physics, mathematics, or engineering, with hands-on experience in numerical simulation or quantitative modelling.
• Ability to write practical scripts, preferably in Python, to automate work, analyse data, and test ideas.
• Motivation by real engineering problems, product impact, and industrial applications.
• Clear communication skills, quick learning, and demonstrated ownership, persistence, and intellectual curiosity.

Nice to have:

• Experience with CFD, fluid mechanics, aerodynamics, aeroacoustics, heat transfer, structural mechanics, electromagnetics, photonics, quantum physics, or adjacent fields.
• Application engineering, technical consulting, customer collaboration, or commercial simulation software experience.
• Knowledge of numerical methods for PDEs, linear algebra, optimization, inverse design, computational geometry, or uncertainty analysis.
• Skills in C++, Rust, GPU computing, CUDA, MPI, OpenMP, distributed computing, or performance optimization.
• Experience with AI or machine learning applied to engineering, simulation, scientific workflows, or technical data.

• Understand challenging industrial and research problems, identify the relevant physics, and formulate an appropriate simulation strategy.
• Build, run, validate, and interpret simulations in one or more physical domains.
• Investigate unexpected results, convergence behaviour, modelling assumptions, boundary conditions, mesh sensitivity, and discrepancies with experiments or reference data.
• Create clear and reusable Python workflows, examples, benchmarks, and technical demonstrations.
• Collaborate with customers, application engineers, product teams, and solver developers; translate user needs and physical insight into actionable product feedback.
• Communicate complex engineering ideas clearly through discussions, written explanations, presentations, and technical content.
• Take ownership of difficult, ambiguous problems and drive them toward trustworthy results.

This role is based in Flexcompute's Poland office in Katowice. Regular in-person collaboration is valued but permanent daily office presence is not required. Candidates should be able to spend meaningful time with the Poland team when needed.