IT Lead Engineer

Linuxconfig; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Equity options

10% employer pension contribution

Free office lunches

Job summary

PhysicsX is a deep-tech company accelerating hardware innovation with AI-driven simulation. We seek an IT Lead Engineer to own HPC infrastructure, cluster management, and high-availability IT operations for CPU/GPU workloads.

You will mentor engineers, shape processes, and improve developer tooling in a fast-growing scale-up with a hybrid model, including New York office presence and remote work days.

Qualifications

• 7–10 years of experience in IT infrastructure, systems administration, or HPC support.
• Hands-on experience managing HPC infrastructure including cluster administration, job schedulers, and performance tuning.
• Experience with compliance frameworks (SOC 2, ISO 27001) and translate control requirements into technical implementation.
• Strong Linux administration skills; comfortable with Linux/macOS/Windows environments.
• Experience supporting developer tooling and workflows including CI/CD systems, version control, license management, and internal platforms.
• Experience in cloud-native environments across multiple cloud vendors.
• Experience designing and setting up zero-trust environments.
• Comfort working in a scale-up with ownership and process-building.
• Strong networking fundamentals and hands-on operational experience.
• Excellent structured troubleshooting and ability to teach the method.
• Strong automation and scripting (Python, Bash, PowerShell) with IaC and CM as default.

Responsibilities

• Own and evolve our HPC environment: cluster administration, job scheduling (Slurm/PBS/LSF), performance tuning, and capacity planning for compute-heavy engineering workloads.
• Experience with Entra ID Governance: Access Reviews, Identity Protection, Privileged Identity Management (PIM) at scale.
• Provide hands-on IT support across the company with an automation-first mindset
• Mentor and develop junior IT/support engineers, building a culture of ownership and technical rigor
• Act as an escalation point for complex or high-priority issues across HPC, dev tooling, and general IT support.
• Configure, support and improve developer tooling (Github Actions/Workflows, JFrog, Chainguard)

Job description

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.

The Role

As IT Lead Engineer, you'll own the infrastructure that lets our engineers push CPU/GPU-heavy physics simulations without hitting a wall. You'll bring HPC operator experience rather than generalist sysadmin breadth, paired with the calm to fix a boardroom AV fault and the judgment to mentor the engineer who caused it. This is a high-ownership role in a scale-up: you'll be building process as much as running it, and you'll be the person people escape to when "it's slow" needs a real root cause, not a restart.

What you will do

• Own and evolve our HPC environment: cluster administration, job scheduling (e.g., Slurm/PBS/LSF), performance tuning, and capacity planning for compute-heavy engineering workloads.
• Experience with Entra ID Governance: Access Reviews, Identity Protection, Privileged Identity Management (PIM) at scale.
• Provide hands‑on IT support across the company with an automation‑first mindset
• Mentor and develop junior IT/support engineers, building a culture of ownership and technical rigor rather than ticket-closing.
• Act as an escalation point for complex or high-priority issues across HPC, dev tooling, and general IT support.
• Configure, support and improve developer tooling (e.g. Github Actions/Workflows, JFrog, Chainguard)

What you bring to the table

• 7–10 years of experience in IT infrastructure, systems administration, or HPC support, with at least 2–3 years in a lead or senior technical role.
• Demonstrable hands‑on experience managing HPC infrastructure including cluster administration, job schedulers, and performance tuning for CPU/GPU workloads.
• Experience with compliance frameworks (e.g. SOC 2, ISO 27001) and able to translate control requirements into actual technical implementation (access reviews, logging, encryption, change management), not just pass an audit checklist.
• Strong Linux administration skills, plus comfort supporting a mixed Linux/macOS/Windows environment typical of an engineering org.
• Experience supporting developer tooling and workflows including CI/CD systems, version control, license management, and internal engineering platforms.
• Experience in cloud-native environments across multiple cloud vendors.
• Strong experience designing and setting up zero trust environments.
• Comfort working in a scale-up: fewer guardrails, more ownership, and a need to build process as well as solve problems.
• Strong networking fundamentals and hands‑on operational experience: routing and switching, segmentation, firewalls, VPN, enterprise wireless, DNS/DHCP/IPAM and TLS/PKI, with confident packet-level troubleshooting.
• Excellent structured troubleshooting: you can take an ambiguous "it's slow" report, isolate the layer, prove the cause and prevent the recurrence and teach that method to someone else.
• Strong automation and scripting ability (Python, Bash, PowerShell) with infrastructure as code and configuration management as your default way of working.

Nice to Have Skills

• Strong AV experience: designing and building AV from scratch, not just supporting existing setups.
• Experience configuring security tooling and working with security teams.

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.

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 New York 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-