Site Reliability Engineer (Mid) — Observability & Resilience

Claranet Portugal; Lisboa; On-site; EUR 60,000 - 90,000; Full time

Job summary

Claranet Portugal is seeking a Site Reliability Engineer (Middle) to drive reliability across services and enable product velocity through stability. You will build SLOs, improve observability, and contribute to disaster recovery and reliability engineering on production workloads in GCP and Azure.

You will design and document SLO frameworks, implement advanced monitoring and engage in incident response, architecture reviews, and mentoring of junior SREs.

Qualifications

• Hands-on experience operating production workloads on cloud platforms (GCP/Azure).
• Advanced Kubernetes operations, multi-cluster environments, service mesh and observability.
• Strong knowledge of distributed-systems reliability, including consensus and failure modes.
• Advanced monitoring with SLO-based alerting, anomaly detection and tracing.
• IaC experience with Terraform or Pulumi and reliability patterns.
• Load-testing/chaos engineering experience (k6, JMeter or similar).
• Database reliability: replication, failover, backup/restore strategies.
• Networking knowledge: load balancing, CDN, DDoS mitigation.
• Security operations: certificate management, secrets rotation and patching.
• Cloud architecture: multi-region, disaster recovery and high availability.

Responsibilities

• Design and document organisation-wide SLO frameworks and error budget policies.
• Architect observability for metrics, logs, traces and alerting.
• Drive reliability engineering practices including chaos engineering and load testing.
• Plan disaster recovery and deliver tested DR plans.
• Contribute to capacity planning and cost optimisation.
• Deliver automation projects and reliability workflows, including self-healing systems.
• Lead or support incident response and conduct reproducible investigations.
• Integrate AI-assisted diagnostic tools and validate outputs.
• Participate in architecture reviews with a reliability focus.
• Mentor Junior SREs in incident response and automation.
• Prepare quarterly reliability reviews for leadership.

Skills

Kubernetes operations

SLO-based alerting

Observability

Incident response

Disaster recovery

Cross-team collaboration

Technical writing

Mentoring

Tools

Terraform

Pulumi

k6 / JMeter

Job description

Claranet Portugal is seeking a Site Reliability Engineer (Middle) to drive reliability across services and enable product velocity through stability. You will build SLOs, improve observability, and contribute to disaster recovery and reliability engineering on production workloads in GCP and Azure.

You will design and document SLO frameworks, implement advanced monitoring and engage in incident response, architecture reviews, and mentoring of junior SREs.