Senior AWS Site Reliability Engineer

Salary: £70,000 - 70,000 per year

Requirements:

• We are looking for 3-6 years of hands-on experience in a similar role, with a strong emphasis on systems engineering, automation, and service reliability.
• We need proficiency in at least one programming language such as Python, Go, Java, or C#, along with scripting skills in Bash or PowerShell.
• We require a solid grasp of cloud platforms like AWS, including how core services such as EC2, ECS, Lambda, and DynamoDB operate under reliability constraints.
• We expect practical experience with infrastructure-as-code tools like CloudFormation or Terraform.
• We need in-depth knowledge of CI/CD principles and hands-on experience with tools such as Jenkins, GitLab CI/CD, or CircleCI.
• We require strong understanding of containerization, including Docker and Kubernetes, and microservices architecture.
• We expect skilled use of observability and monitoring tools such as Prometheus, Grafana, ELK stack, or AWS CloudWatch.
• We are looking for excellent analytical and troubleshooting abilities, especially within complex distributed systems.
• We require proven experience handling incident management and conducting blameless postmortems, including leading cross-functional teams through resolution and communication during critical outages.
• We would value practical experience managing large-scale Kubernetes clusters; Kubernetes certifications are a strong bonus.
• We would value hands-on familiarity with the Grafana Observability Suite, including Loki, Mimir, and Tempo.
• We would value background in administering or developing with monitoring and automation tools such as Splunk, Datadog, PagerDuty, or Rundeck.
• We would value experience using configuration management platforms like Ansible, Puppet, or Chef.
• We would value professional certifications in cloud DevOps, such as AWS Certified DevOps Engineer or Google Cloud Professional DevOps Engineer, or similar credentials.

Responsibilities:

• We oversee the production environment by ensuring system availability and maintaining a comprehensive view of overall health.
• We develop tools and software to support and streamline the management of platform infrastructure and key applications.
• We focus on enhancing the dependability, performance, and delivery speed of our software products.
• We analyse and fine-tune system performance to anticipate user demands and drive innovation.
• We provide operational support and technical oversight for several large-scale distributed applications.
• We monitor and interpret system and application metrics to fine-tune performance and troubleshoot issues effectively.
• We collaborate closely with developers to enhance service quality through thorough testing and structured release practices.
• We engage in architectural discussions, manage platform operations, and contribute to capacity forecasting.
• We design and implement automated solutions to build resilient, scalable systems.
• We maintain a strong focus on delivering new features while ensuring stability and adherence to service level goals.

Technologies:

• AWS
• Lambda
• Ansible
• Bash
• C#
• CI/CD
• Cloud
• CloudWatch
• Datadog
• DevOps
• Docker
• EC2
• ELK
• GitLab
• Grafana
• Incident Management
• Support
• Java
• Jenkins
• Kubernetes
• PagerDuty
• PowerShell
• Prometheus
• Puppet
• Python
• Splunk
• Terraform
• microservices
• Fine-tuning

More:

We deliver cutting-edge enterprise software solutions across cloud and on-premises environments, helping organisations improve customer experiences, maintain regulatory compliance, and fight fraud. We are trusted by businesses worldwide to enable seamless, intelligent customer interactions. The role is offered with hybrid working, including 3 days from home, and includes benefits such as life insurance at 4 x annual salary, private medical insurance, a bonus scheme, an employee assistance programme, and GP online assistance.

last updated 37 week of 2026