Senior Simulation Data Engineer

About us

PhysicsX is a deep-tech company with roots in numerical physics and Formula One, dedicated to accelerating hardware innovation at the speed of software.

We are building an AI-driven simulation software stack for engineering and manufacturing across advanced industries.

By enabling high-fidelity, multi-physics simulation through AI inference across the entire engineering lifecycle, PhysicsX unlocks new levels of optimization and automation in design, manufacturing, and operations — empowering engineers to push the boundaries of possibility.

Our customers include leading innovators in Aerospace & Defense, Materials, Energy, Semiconductors, and Automotive.

Note: We are currently recruiting for multiple positions, however please only apply for the role that best aligns with your skillset and career goals.

The Role

The Senior Simulation Data Engineer will extend and operate the infrastructure that powers our research Data Factory. You will be responsible for the end-to-end pipeline: from geometry preparation and simulation orchestration through validation, post-processing, and delivery to downstream ML training systems, using PhysicsX platform orchestration services where synergies exist.

This role sits at the intersection of HPC engineering and data engineering. You will orchestrate long-running CFD simulations at scale, build robust data pipelines, and ensure that every simulation we produce meets rigorous quality standards.

Team Context

In this role, you will be vertically embedded in Research , working daily with:

Research Scientists who define data requirements and quality standards

ML Engineers who consume Data Factory outputs for model training

ML Infrastructure Engineers who are accountable for downstream training infrastructure

You will have end-to-end responsibilities over the Data Factory, with the autonomy to make architectural decisions and the responsibility to keep data flowing reliably.

Horizontally, you will be part of an infrastructure engineering group responsible for infrastructure across the company.

What you will do

Simulation Orchestration

Extend and operate the Data Factory infrastructure that orchestrates thousands of CFD simulations per day on cloud compute

Design and operate job scheduling systems that maximize throughput while handling failures gracefully

Build monitoring and alerting to detect simulation failures, convergence issues, and resource bottlenecks early

Data Pipeline Engineering

Build high-performance data pipelines that move simulation outputs from solver results to ML-ready training data

Implement geometry preprocessing workflows (mesh preparation, morphing, watertightness validation)

Design and operate post-processing pipelines: surface decimation, field interpolation, format conversion

Optimize I/O performance for large mesh datasets

Data Quality and Validation

Implement comprehensive validation checks at every pipeline stage: solver convergence, physical field bounds, post-processing fidelity

Build systems that capture and quarantine bad data before they reach training pipelines

Track and report data quality metrics across the entire Data Factory

Work towards full provenance: training samples should be traceable back to their source geometry and simulation configuration

Integration and Delivery

Deliver validated datasets to downstream ML training infrastructure in formats optimized for efficient data loading

Design data versioning and cataloging systems that support reproducible training runs

Work closely with ML Infrastructure Engineers to ensure smooth handoff between data production and model training

Support multi-dataset training workflows

What you bring to the table

Ability to scope and effectively deliver projects, prioritising activity as needed.

Problem-solving skills and the ability to analyse issues, identify causes, and recommend solutions quickly.

Excellent collaboration and communication skills, especially in a research setting. You can translate "the model isn't converging" into infrastructure hypotheses and solutions, and can bridge technical abstractions with implementations.

5+ years of experience in data engineering, HPC engineering, or simulation infrastructure.

Strong experience with orchestration systems: SLURM, Kubernetes, Temporal

Production data pipeline experience: you've built and operated pipelines that process large volumes of data reliably

Proficiency in Python for pipeline development and automation

Systems engineering fundamentals: Linux, networking, storage systems, performance debugging

Experience with cloud infrastructure; ****ideally CoreWeave or similar GPU/HPC-focused clouds

Background in HPC for simulation engineering: experience with CFD, FEA, or similar computational workflows (StarCCM+, OpenFOAM, ANSYS, etc.)

Experience with geometry processing: mesh manipulation, CAD formats, PyVista

Familiarity with scientific data formats: HDF5, VTK, NetCDF, Zarr

Data quality engineering experience: validation frameworks, anomaly detection, data observability

Ideally

Understanding of CFD fundamentals, enough to interpret solver outputs and validation metrics

Experience with 3D geometry pipelines (mesh decimation, field interpolation)

Familiarity with ML data loading patterns and how training systems consume data

What we offer

Build what actually matters

Help shape an AI-native engineering company at a formative stage, tackling problems that genuinely matter for industry and society. This is work with real-world impact - and something you can be proud to stand behind.

Learn alongside exceptional people

Work with a high-caliber, collaborative team of engineers, scientists, and operators who care deeply about doing great work, and about helping each other get better. We come from diverse backgrounds, but we share a commitment to operating at the highest level and addressing some of the most complex challenges out there. If you’re ambitious, thoughtful, and driven by impact, you’ll feel at home.

Influence over hierarchy

We operate with a flat structure: good ideas win - wherever they come from. Questioning assumptions and challenging the status quo isn’t just welcomed, it’s expected.

Sustainable pace, long-term ambition

Building meaningful technology is a marathon, not a sprint. We believe in balancing focused, ambitious work with a life beyond it. Our hybrid model blends time together in our Shoreditch office with work-from-home days, giving you the flexibility to work sustainably while staying connected in person.

And it doesn’t stop there …

🚀 Equity options - share meaningfully in the company you’re helping to build.

🏦 10% employer pension contribution - because investing in future matters.

🍽️ Free office lunches - to keep you energised and focused.

👶 Enhanced parental leave - 3 months full pay paternity and 6 months full pay maternity leave, to provide extra flexibility during the moments that matter most.

🍼 YellowNest nursery scheme - to help working parents manage childcare costs.

☀️ 25 days of Annual Leave (+ Public Holidays) - because taking time to rest matters.

🏥 Private medical insurance - 100% employee cover, giving you complete peace of mind.