Site Reliability Engineer (Observability)

Requirements

• Extensive experience in an SRE, DevOps, or Platform Engineering role
• Comfortable writing Python and/or Go for tooling and automation
• Hands‑on experience operating open‑source observability stacks (logs, metrics, traces, alerting)
• Working knowledge of Kubernetes and GitOps workflows
• Practical experience with infrastructure‑as‑code (Terraform, Ansible, Puppet, or similar) and solid Linux system administration skills
• (Desirable) Familiarity with OpenTelemetry
• (Desirable) Experience running ClickHouse for log and metric storage at scale
• (Desirable) Interest in or experience with AI/ML tooling

What the job involves

• We're a small, tool‑agnostic team that owns the observability infrastructure behind Proton's services — the logs, metrics, traces, and alerts that keep systems running smoothly for the millions of users who trust us with their privacy
• We run on open‑source stacks across Proton's on‑premise data centers, and we dogfood heavily: we're our own first customers
• We favor simple, solid solutions over large engineering efforts, and we believe good systems emerge iteratively
• You'll join a group that values frank, open communication and a problem‑solving mentality — if you want narrow scope and a fixed backlog, this isn't the right fit
• Design, deploy, and operate observability pipelines for logs, metrics, traces, and alerts across Proton's services using open‑source technologies
• Partner with development and platform teams to ship practical alerting, dashboarding, and integration solutions that engineers actually rely on
• Build reusable templates and tooling that streamline onboarding, incident response, and analysis
• Champion observability best practices across teams and raise the bar for how Proton instruments its systems
• Build AI‑powered tooling that sharpens detection, analysis, and response capabilities
• Evolve the observability platform iteratively to meet the real needs of internal stakeholders