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Staff Software Engineer, Infrastructure - Python & Kubernetes

PhysicsX· Product
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Hybrid (London, UK)£0full-timePosted 4w ago

About the role

Senior Platform SRE / Core Infrastructure engineer responsible for design, provisioning and operation of the shared infrastructure used by PhysicsX platform across multi-cloud and on-prem environments, with focus on Kubernetes, secrets, GPU drivers, networking, multi-tenancy and reliability.

Responsibilities

  • Own the design and delivery of core infrastructure across multi cloud providers (AWS, GCP, Azure) and on premises environments using Terraform and Crossplane.
  • Architect and operate Kubernetes clusters supporting both single tenant and multi tenant workloads, with a strong emphasis on isolation, performance and reliability.
  • Define and implement infrastructure provisioning patterns using Crossplane compositions and Terraform modules, ensuring reproducibility and auditability across environments.
  • Design and operate secrets management solutions, including dynamic secret provisioning, rotation and fine grained access control integrated with cluster identity.
  • Manage and maintain GPU driver configurations and accelerated compute node pools, ensuring compatibility and performance for AI and simulation workloads.
  • Own cluster networking design including CNI selection, Istio service mesh integration, ingress strategy and cross cluster connectivity.
  • Implement and maintain vCluster based multi tenancy to provide strong workload isolation within shared infrastructure.
  • Develop lightweight Kubernetes Operators or controllers where automation of infrastructure lifecycle tasks requires it.
  • Establish SLOs and reliability targets for core infrastructure components and lead the response to production incidents.
  • Partner with security and platform teams to enforce infrastructure governance, network policies and compliance controls.
  • Contribute to and uphold engineering standards across the platform organisation.

Qualifications

  • Kubernetes depth – 5+ years of production experience; CKAD/CKA/CKS desirable.
  • Crossplane expertise – hands-on design and operation of Crossplane compositions, providers and managed resources in production.
  • Terraform proficiency – scale, state management, module design and CI integration.
  • Multi cloud and on premises – experience across multiple clouds and on premises environments; identity, networking and storage differences understood.
  • Multi tenancy architecture – design and implementation of single tenant and multi tenant Kubernetes architectures with strong isolation and governance.
  • Secrets management – experience with Vault, External Secrets Operator or cloud native secret stores, including dynamic provisioning and rotation.
  • Networking – solid Kubernetes networking knowledge, CNI, Istio, ingress; cross-cluster/hybrid connectivity valued.
  • vCluster and virtual clusters – experience providing lightweight isolated environments within shared clusters.
  • GPU and accelerated compute – familiarity with GPU driver management and device plugins.
  • Kubernetes Operators – lightweight experience writing or extending Operators/controllers, preferably in Golang or Python.
  • Software engineering capability – automation of infrastructure; Python and Golang primary languages; exposure to functional languages appreciated.
  • Platform engineering mindset – infrastructure as a product, usability, documentation and maintainability.
  • Distributed systems – understanding of failure modes, consistency and operating at scale.

Skills

Required:KubernetesCrossplaneTerraformMulti-cloud / on-premises infrastructureMulti-tenancySecrets managementNetworking (Kubernetes, Istio, CNI, ingress)GPU driver managementKubernetes OperatorsPython

Benefits

  • Equity options
  • 10% employer pension contribution
  • Free office lunches
  • Enhanced parental leave – 3 months full pay paternity and 6 months full pay maternity leave
  • YellowNest nursery scheme
  • 25 days of Annual Leave (+ Public Holidays)
  • Private medical insurance – 100% employee cover
  • Wellhub Subscription
  • Eye tests
  • Personal development support
  • Employee Assistance Programme (EAP)
  • Bike2Work scheme and Season ticket loan
  • Octopus EV salary sacrifice
Last updated Sep 23, 2026. Interested? Apply on the company site.

About PhysicsX

Accelerating Industrial Innovation with AI

PhysicsX is deploying AI to transform how physical systems are engineered, embedding intelligence across the entire product lifecycle, from concepting and design to manufacturing and operations.

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