Lead Observability Engineer

Location: Hybrid, three days per week in either the London or Paris office, with occasional travel between them

Company

H builds computer-use agents that take actions in browsers and desktop applications.

What you will do

• Set and implement a unified observability strategy across teams and technical stacks.
• Own systems for metrics, logs, traces, alerts, dashboards, and telemetry integrations.
• Define product-level and technical SLAs, SLOs, and SLIs with product, research, and infrastructure teams.
• Build end-to-end visibility of system dependencies, including visualisations for users and context for agents.
• Automate tracking for coverage, reliability, alert quality, execution cost, and compliance reporting.
• Lead adoption across infrastructure, product, engineering, and research while remaining hands-on.

Requirements

• Experience setting the direction for substantial engineering work, delivering it, and driving adoption across teams.
• Hands-on experience building production instrumentation and telemetry integrations.
• Experience defining product-level and technical-level SLAs, SLOs, and SLIs.
• Experience with error budgets, burn rates, MTTA, MTTR, and MTTM.
• Experience building self-managed observability systems using tools such as OTEL, Prometheus, Grafana, Loki, Mimir, Alloy, Elasticsearch, or Kibana.
• Experience with Kubernetes at scale, enterprise multi-tenancy, inference, or asynchronous agent workflows.

Nice to have

• Experience with AI is not required.

Culture & Benefits

• Hands-on lead role with ownership across the full technical stack.
• Collaboration with every team across infrastructure, product, engineering, and research.
• Competitive package.
• Hybrid work from the London or Paris office with occasional travel between locations.

Hiring process

• 30-minute call with the Talent team.
• 60-minute technical assessment and 60-minute system design interview.
• 30-minute closing conversation with the hiring manager.