Infrastructure Engineer (Platform) - Paris

You'll be joining the team responsible for the infrastructure behind all of H's products: clusters, networking and security. It's the foundation that lets the rest of the company deliver value directly to customers.

Responsibilities

• From your first quarter, you'll own a real piece of our move from AWS to an environment-agnostic platform. The team moves fast and the problems are novel: each model release and each new customer changes what the infrastructure has to support.
• Running and scaling Kubernetes clusters and networking
• Building authentication and authorization systems
• Refactoring the stack to be environment agnostic
• Speeding up deployment for our Forward Deployed Engineers (FDEs)
• Building Kubernetes-native services, such as controllers and operators
• Writing and maintaining infrastructure as code
• Your team and your users
• The role sits in the Infrastructure team, with our VP of Engineering as hiring manager. Your users are H's product and platform engineers and, through our FDEs, our external customers.
• What we think it takes

Requirements

You're likely a good fit if you

• Write Python or Go well enough to solve real problems with it
• Have built and operated a Kubernetes-based platform at significant scale and can put numbers on its clusters, services and users
• Have worked with more than one cloud provider (AWS, Azure, GCP), or have strong knowledge of fundamental systems engineering (Linux, eBPF)
• Have built and owned infrastructure as code, CI/CD and observability
• Handled petabyte-scale data, or high-frequency, latency-sensitive workloads

Worked with agentic systems, particularly in security

• Worked with GPUs and tools such as Dynamo, vLLM or SGLang
• Five stages, about 3.5 hours in all: a 30-minute call with our Talent team, a 30-minute conversation with the lead of the Infrastructure team, a 60-minute coding interview, a 60-minute system design interview and a closing 30-minute conversation with our VP of Engineering.

Preferred

• Worked with complex network topologies (multi-cluster, dual-stack) and CNIs such as Cilium or Calico

How we hire

Practicalities

The role is hybrid, with three days a week in our Paris or London office. We offer a competitive package.