Software Engineer - Simulation Workbench

The Role

PhysicsX is developing a platform used by Data Scientists and Simulation Engineers to build, train, and deploy Deep Physics Models. The core of this platform relies on handling massive volumes of complex simulation data, enabling high-fidelity multi-physics simulation through AI inference.

We are looking for a Software Engineer with a strong background in Data Engineering to join our team. You will not just be moving data from A to B; you will be architecting and building the distributed systems, services, and APIs that form the backbone of our data strategy. You will bridge the gap between complex physical simulations and modern data infrastructure, implementing storage solutions for AI/ML pipelines and creating the analytical layers that allow our engineers to visualize and understand their results. This is a role for a builder who loves coding robust software as much as they love designing efficient data architectures.

What you will do

• Design and build scalable distributed systems, microservices, and APIs focused on storing, processing, and serving high-dimensional simulation data.
• Create robust, automated data and analytical pipelines that ingest, process, and transform multimodal data from physics simulations to feed our AI training loops and inference engines.
• Implement and integrate with modern Data Warehouses and Data Lakes (or Data Lakehouses) to ensure our data is organized, accessible, and queryable at scale.
• Build internal BI systems and complex scientific data visualizations that allow researchers and engineers to interact intuitively with massive datasets and simulation results.
• Implement high-performance storage solutions capable of handling the unique demands of complex simulations and deep learning workloads.
• Drive best practices in software engineering across the team, including CI/CD, automated testing, and infrastructure-as-code, ensuring our data systems are as reliable as they are powerful.
• Own your work from architectural design and prototyping through to deployment and maintenance in a fast-paced, agile environment.

What you bring to the table

• A passion for the evolving craft of software engineering and for sponsoring a culture of excellence in the craft.
• A strong foundation in software engineering (algorithms, data structures, system design) with a passion for writing clean, maintainable, and testable code (strong command of Golang and Python).
• Proven experience building distributed systems with big data processing pipelines in a production environment, moving beyond simple scripting to robust engineering solutions (e.g. Databricks/Delta Lake, Snowflake, BigQuery), practical experience integrating with and architecting around Data Warehouses and Data Lakes.
• Experience building custom data visualizations or integrating complex BI systems to expose data insights to end-users.
• A proactive mindset with the ability to diagnose complex performance bottlenecks in data processing and storage systems.
• Excellent communication skills to discuss data needs with research scientists and translate them into technical specifications.

Ideally

• Polyglot Programming Mastery: deep expertise in Python combined with mastery of high-performance compiled languages such as Golang, C++, or Rust.
• Big Data Scale: Real-world experience designing and maintaining big data systems, with a proven track record of running complex analytics on massive datasets in production.
• Multimodal Data Exposure: Experience working with multimodal databases or storage engines capable of handling diverse data types (e.g., combining relational data, vector embeddings, and large binary blobs) seamlessly.
• Domain Knowledge: Understanding of 3D geometry processing (meshes, point clouds) and the specific data structures used in physics-based simulations.

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.

💪 Wellhub Subscription - gain access to thousands of gyms, classes and wellness apps, supporting both physical and mental wellbeing.

👀 Eye tests - because good work depends on good health.

📈 Personal development - dedicated support for learning, development, and leveling up over time.

💛 Employee Assistance Programme (EAP) - confidential wellbeing support, available whenever you need it.

🚲 Bike2Work scheme and 🚆 Season ticket loan - to make getting to work easier and greener.

🚗 Octopus EV salary sacrifice - for a simpler, more sustainable way to drive electric.

🔎 Watch this space, we’re continuing to build this as we grow…