Site Reliability Engineer Performance Testing

Job Description

Role Title: SRE Performance Testing

Location: Farnborough (3 days on-site per week)

Duration: Until 31/03/2026

Day Rate: £297.50 Inside IR35

The Role

We are seeking a skilled Site Reliability Engineer (SRE) – Performance Testing to join our team in Farnborough. The successful candidate will play a key role in designing, implementing, and maintaining performance testing frameworks to ensure application reliability, scalability, and efficiency. This role combines expertise in performance engineering, infrastructure automation, and observability to optimise system performance across production and pre-production environments.

Your Responsibilities

• Design and implement performance testing strategies using tools such as JMeter, Gatling, or LoadRunner.
• Monitor and analyse system performance metrics to identify bottlenecks and optimise infrastructure.
• Develop and maintain CI/CD pipelines to support performance testing and automated deployments.
• Collaborate with development and operations teams to ensure applications meet performance and reliability standards.
• Automate operational tasks and environment provisioning using Ansible, Terraform, or Python scripting.
• Build and maintain monitoring and alerting solutions using Prometheus, Grafana, and related tools.
• Participate in incident response and conduct root cause analysis for performance-related issues.
• Document performance benchmarks, testing procedures, and system configurations to support continuous improvement.
  
  

Your Profile

Essential Skills & Experience

• Proven experience in performance testing and system reliability engineering.
• Strong hands-on experience with JMeter, Gatling, or LoadRunner.
• Solid understanding of CI/CD pipelines and automation tools such as Jenkins or GitLab CI.
• Proficiency in scripting languages such as Python or Bash.
• Experience with Infrastructure as Code tools (Ansible, Terraform).
• Strong knowledge of monitoring and observability tools (Prometheus, Grafana).
• Familiarity with Linux environments and cloud platforms (AWS, Azure, or GCP).
• Excellent analytical, problem-solving, and communication skills.
  
  

Desirable Skills

• Experience with Kubernetes and container-based environments.
• Exposure to chaos engineering or resilience testing.
• Understanding of network performance tuning and application load balancing.
• Relevant certifications in performance testing or cloud engineering.