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Perplexity

Member of Technical Staff (Site Reliability Engineer, Crawler)

London, United Kingdom
Where
London, United Kingdom
Salary
Not stated
Level
Lead and above
Employment
Full-time
Field
Software
Posted
11 h ago

The role at a glance

Keeping a crawler running is not the same as keeping it productive. Queues can grow while servers look healthy, and a small change can become a fleet-wide bottleneck.

Who can apply

The location field says: London (Arbeitnow)

The employer doesn't say whether they sponsor visas. Check before you apply.

About the job

Keeping a crawler running is not the same as keeping it productive. Queues can grow while servers look healthy, and a small change can become a fleet-wide bottleneck. On Perplexity's Crawler team, you'll improve throughput, plan capacity, and build operational reliability through safer deployments, better observability, and durable fixes.

Responsibilities

  • Operate and optimize Kubernetes workloads and supporting infrastructure for crawler services, including fetching and rendering fleets.

  • Build and maintain infrastructure as code and CI/CD pipelines, with safe rollouts, validation, and fast rollback.

  • Define SLOs and build monitoring, alerting, and observability for availability, latency, throughput, and resource saturation.

  • Own capacity planning and resource efficiency; diagnose queue backlogs, network failures, and resource bottlenecks with service owners.

  • Participate in the team's on-call rotation, lead incident response, and turn blameless postmortems into durable reliability improvements.

  • Write production software to automate diagnosis and routine remediation, with validation and approval gates for high-impact actions.

Qualifications

  • 5+ years of experience in SRE, production engineering, or infrastructure-heavy backend roles, with strong programming skills in Python, C++, Rust, or Go.

  • Hands-on experience with cloud infrastructure, production Kubernetes, infrastructure as code such as Terraform, and automated deployment workflows.

  • Strong Linux and networking fundamentals, including TCP/IP, DNS, TLS, HTTP, and load balancing.

  • Experience building observability with tools such as Datadog, Prometheus, or Grafana, and using SLOs to guide reliability improvements.

  • Proven experience diagnosing distributed-system failures, leading production incidents, and improving system performance or resource efficiency.

Nice to have

  • Experience operating web crawlers, search infrastructure, or browser fleets at scale.

  • Experience with distributed queues, backpressure, workload isolation, or multi-region recovery.

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