Platform Reliability Engineer

SIS Ltd; Milton Keynes; On-site; GBP 70,000 - 95,000; Full time

Job summary

Platform Reliability Engineer at SIS Ltd. as part of a team ensuring reliability and performance of 24/7 platforms. You will drive automation, observability and improvements across cloud platforms, applications and engineering teams.

You will support Azure-hosted services, Kubernetes environments and cloud-native tech, delivering robust incident response and proactive reliability enhancements that reduce toil and improve service resilience.

Qualifications

• 3+ years in Site Reliability Engineering or equivalent production role.
• Experience supporting 24/7 high-availability services.
• Strong knowledge of Microsoft Azure and cloud best practices.
• Experience with Kubernetes and AKS for containerised workloads.
• Knowledge of Grafana, Prometheus and Azure Monitor.
• Troubleshooting complex applications and distributed systems.
• Automation, scripting and CI/CD practices experience.
• Strong incident management and analytical skills.
• Proactive mindset for reliability, resilience and efficiency.
• Experience with Java/Spring Boot or .NET support and messaging tech.

Responsibilities

• Support highly available, business-critical apps and cloud platforms.
• Investigate incidents and perform root-cause analysis for rapid restoration.
• Improve platform reliability via automation and monitoring initiatives.
• Enhance observability with dashboards, logging, metrics, tracing and alerts.
• Support AKS/Azure-hosted services and cloud-native technologies.
• Contribute to CI/CD pipelines and deployment readiness activities.
• Drive improvements to reduce toil and increase resilience and performance.
• Collaborate with Software, Platform, Infra and Security teams.

Skills

SRE experience

Cloud operations

Azure knowledge

Kubernetes

Monitoring/observability

CI/CD practices

Incident management

Automation scripting

Problem solving

Proactive reliability

Tools

Grafana

Prometheus

Azure Monitor

AKS

Terraform

Bicep

FluxCD

Argo CD

Ansible

StackStorm

Job description

At SIS, we're looking for a Platform Reliability Engineer to help ensure the reliability, performance and operational excellence of the platforms and applications that power our 24/7 products and services.

This is an opportunity to work across cloud platforms, applications and engineering teams, supporting business-critical systems while driving automation, observability and continuous improvement. You'll play a key role in enhancing service reliability, reducing operational risk and helping shape the future of our technology operations capability.

What you'll be doing

• Supporting and maintaining highly available, business-critical applications and cloud platforms
• Investigating and resolving incidents, ensuring rapid restoration of services and effective root-cause analysis
• Improving platform reliability through automation, monitoring and continuous improvement initiatives
• Enhancing observability through dashboards, logging, metrics, tracing and alerting
• Supporting Azure-hosted services, Kubernetes environments and cloud-native technologies
• Contributing to CI/CD pipelines, deployment processes and operational readiness activities
• Driving improvements that reduce operational toil, increase resilience and improve service performance
• Collaborating closely with Software Engineering, Platform Engineering, Infrastructure and Security teams to deliver reliable, scalable solutions

What we're looking for

You'll bring:

• At least 3 years' experience in Site Reliability Engineering (SRE), platform support, cloud operations or a similar production engineering role
• Experience supporting high-availability, business critical services in a 24/7 environment
• Strong knowledge of Microsoft Azure and cloud operational best practices
• Experience supporting containerised workloads, ideally within Kubernetes and Azure Kubernetes Service (AKS)
• Knowledge of monitoring and observability tools such as Grafana, Prometheus and Azure Monitor
• Experience troubleshooting complex applications, cloud infrastructure and distributed systems
• Familiarity with automation, scripting and CI/CD practices
• Strong incident management, problem-solving and analytical skills
• A proactive mindset and passion for improving reliability, resilience and operational efficiency
• Experience with Java and Spring Boot or .NET application support.
• Knowledge of Apache Artemis, Red Hat AMQ, IBM MQ or similar messaging technologies.
• Experience with Ansible, StackStorm or other configuration and workflow automation tools.
• Experience with infrastructure-as-code and GitOps tooling such as Terraform, Bicep, FluxCD or Argo CD.
• Knowledge of chaos engineering, performance testing or continuous testing tools.

At SIS, you'll join a team that values:

You'll have the opportunity to work on modern cloud technologies, influence reliability engineering practices and contribute to the continuous improvement of platforms that support critical services across the business. Working alongside talented engineers in a collaborative environment, you'll help drive operational excellence while developing your technical expertise and career.