Senior Software Engineer - Platform Runtime (Remote)

About the Role

Join PhysicsX as a Senior Software Engineer - Platform Runtime and become a key player in our mission to revolutionize engineering and manufacturing through AI-driven simulation software. This Senior Software Engineer - Platform Runtime remote position allows you to work at the forefront of technology, collaborating with top-tier engineering teams to enhance our platform's capabilities.

What You'll Do

• Design, build, and operate production-grade Kubernetes Operators that manage the full lifecycle of PhysicsX workloads, including provisioning, scaling, health management, and graceful termination.
• Own the runtime architecture across multi-cloud and on-premises environments, ensuring consistent behavior regardless of where compute runs.
• Drive the adoption and evolution of service mesh capabilities using Istio, including traffic management, mutual TLS, and observability integration.
• Collaborate with platform and infrastructure teams to define and maintain clear runtime interfaces and contracts.
• Establish and own reliability practices for runtime components, including SLOs, alerting, and incident playbooks.
• Mentor engineers across the platform organization and contribute to engineering standards, design reviews, and technical direction.
• Evaluate and integrate upstream Kubernetes ecosystem tooling, contributing back where appropriate.

Requirements

• At least 3 years of professional experience in Golang development.
• Proven experience designing, building, and operating production Kubernetes Operators.
• Deep understanding of Kubernetes API machinery, reconciliation loops, and controller runtime.
• Hands-on experience with Istio in a production environment.
• Experience with multi-tenancy and isolation using vCluster or equivalent tooling.
• Strong background in distributed systems design and troubleshooting.
• Experience operating Kubernetes across multiple cloud providers and on-premises infrastructure.
• Familiarity with AI infrastructure tools such as Kubeflow or Kedro.

Nice to Have

• Experience contributing to open-source Kubernetes projects.
• Exposure to GPU workload scheduling or accelerated compute environments.
• Kubernetes certifications such as CKA, CKAD, or CKS.

What We Offer

• Equity options – share in our success and growth.
• 10% employer pension contribution – invest in your future.
• Free office lunches – great food to fuel your workdays.
• Flexible working – balance your work and life in a way that works for you.
• Hybrid setup – enjoy our Shoreditch office while keeping remote flexibility.
• Enhanced parental leave – support for life's biggest milestones.
• Private healthcare – comprehensive coverage.
• Personal development – access to learning and training to help you grow.
• Work from anywhere – extend your remote setup to enjoy the sun or reconnect with loved ones.

At PhysicsX, we value diversity and are committed to equal employment opportunities. We encourage individuals from groups traditionally underrepresented in tech to apply. Join us in making a difference!