Site Reliability Engineer (Middle)

We're fast learners,
hard workers, natural collaborators... and we Make Modern Happen!

Our ambition is to
unlock the potential of our digital world so that organisations everywhere can
innovate and thrive securely.

We aim to achieve
this goal by bringing together the world’s most talented people and the most
powerful technologies, combining them to address our customers' challenges and to
build something stronger together.

If you share our
vision, join us!

Right now, we are
looking for a Site Reliability Engineer (Middle) to drive
reliability across multiple services and enable product velocity through
stability. You will develop organisation-wide SLO and error budget practices,
improve observability and automation, and contribute to disaster recovery and
reliability engineering. Hands-on experience operating production workloads on
GCP and Azure is required.

Your responsibilities
include:

• Design and document organisation-wide SLO frameworks and error
  budget policies;
  
• Architect observability for metrics, logs, traces and alerting,
  including SLO-based alerting and anomaly detection;
  
• Drive reliability engineering practices, including chaos
  engineering and load testing;
  
• Plan disaster recovery and deliver at least two DR plans with
  tested procedures;
  
• Contribute to infrastructure capacity planning and cost
  optimisation;
  
• Deliver complex automation projects and reliability workflows,
  including self-healing systems;
  
• Lead or support incident response as an escalation point for
  complex incidents; conduct reproducible investigations using evidence across
  services;
  
• Integrate diagnostic and AI-assisted tools into repeatable
  investigation and preventive reliability workflows, validating their outputs
  and measuring their effectiveness;
  
• Participate in architecture reviews with a reliability focus;
  
• Mentor Junior SREs in incident response, automation and responsible
  use of diagnostic tools;
  
• Prepare quarterly reliability reviews for leadership.
  

You must have:

• Hands-on experience operating production workloads on GCP and Azure;
  
• Advanced Kubernetes operations experience, including multi-cluster
  environments, service mesh and observability;
  
• Knowledge of distributed-systems reliability, including consensus,
  replication and failure modes;
  
• Advanced monitoring experience, including SLO-based alerting,
  anomaly detection and tracing;
  
• Infrastructure as Code experience with Terraform or Pulumi,
  including reliability patterns;
  
• Load-testing and performance-engineering experience, including k6,
  JMeter or chaos engineering;
  
• Knowledge of database reliability, including replication, failover
  and backup/restore strategies;
  
• In-depth networking knowledge, including load balancing, CDN and
  DDoS mitigation;
  
• Security operations experience, including certificate management,
  secrets rotation and patching;
  
• Cloud architecture knowledge covering multi-region, disaster
  recovery and high availability;
  
• Experience designing diagnostic workflows, correlating evidence
  across services, evaluating AI-generated outputs, conducting reproducible
  investigations and integrating safe automation;
  
• Incident command and crisis management skills;
  
• Strong cross-team collaboration, technical writing, mentoring and
  knowledge-sharing skills;
  
• A data-driven approach and the ability to balance reliability with
  delivery velocity.
  

We value:

• Kubernetes CKA + CKS;
  
• Azure DevOps Engineer Expert;
  
• Chaos Engineering certification.
  

We
offer:

• Regular
  professional development;
  
• Certification
  paths resources;
  
• Regular teambuilding programs;
  
• Friendly workplace.
  

Workplace: Lisbon / Porto (Hybrid)  

Claranet: Make Modern
Happen!