Site Reliability Engineers (DV Security Clearance)

CGI Group Inc.; Gloucester; Sur place; GBP 65 000 - 110 000; Plein temps

Résumé du poste

CGI Group Inc. in the UK is seeking experienced Site Reliability Engineers to join cross-functional teams supporting secure, cloud-based and big-data platforms. You will design, build, operate, and continuously improve highly reliable systems in a government-grade secure environment.

This on-site role requires UK nationals with DV/HLC clearance. You will work with AWS and OpenShift, automate infrastructure with Terraform and CI/CD pipelines, and help ensure resilience, performance, and security

Qualifications

• Proven experience as a Site Reliability Engineer, DevOps Engineer, or similar role supporting cloud-based or secure systems.
• Strong automation and scripting skills (Python, Bash, Go, or similar).
• Hands-on experience with CI/CD pipelines (Jenkins, GitLab CI/CD, etc.).
• Strong knowledge of Infrastructure as Code (Terraform, CloudFormation, Ansible).
• Solid understanding of AWS and cloud-native architectures.
• Experience with Linux-based environments and production troubleshooting.
• Familiarity with containerisation and orchestration (OpenShift or Kubernetes).
• Experience with monitoring, logging, and observability tools.
• Comfortable supporting live services in production environments.
• Strong communication skills and a proactive, problem-solving mindset.
• Skills: English
• GitLab
• Cloud Native Development

Responsabilités

• Architect, build and operate cloud infrastructure.
• Design and deliver secure, scalable, fault-tolerant infrastructure across AWS (and potentially Azure/GCP).
• Support and operate live systems.
• Maintain deployment environments, support production systems, and manage changes to live services in mission-critical environments.

Connaissances

Cloud infrastructure design

Python scripting

CI/CD pipelines

AWS

Linux

OpenShift/Kubernetes

Security practices

Automation

Communication

English

Outils

Jenkins

GitLab CI/CD

Ansible

Kubernetes

OpenShift

Terraform

Description du poste

We are seeking experienced Site Reliability Engineers to join our cross-functional teams supporting secure, cloud-based and big-data platforms. Working closely with clients and internal delivery teams, you will help design, build, operate, and continuously improve highly reliable, scalable systems within a secure environment.

Due to the nature of the work, this role requires onsite attendance and applicants must be solely UK Nationals (not dual nationals and not visa holders) with existing HMG DV / HLC clearance.

Your future duties and responsibilities

• Architect, build and operate cloud infrastructure
• Design and deliver secure, scalable, fault-tolerant infrastructure across AWS (and potentially Azure/GCP), optimised for performance, availability, and cost.
• Support and operate live systems
• Maintain deployment environments, support production systems, and manage changes to live services in mission-critical environments.

Technology stack

• Languages & Scripting: Java, Python, Go, JavaScript (TypeScript), Bash
• Frontend: Vue
• CI/CD & Automation: Jenkins, GitLab CI, Ansible, Cucumber
• Cloud & Platforms: AWS, OpenShift, Linux
• Infrastructure as Code: Terraform
• Data & Streaming: Apache NiFi
• Monitoring & Logging: Grafana, ELK Stack, SonarQube
• Version Control: GitLab
• Automation & Infrastructure as Code (IaC)
• Automate infrastructure provisioning, configuration, and CI/CD pipelines using Terraform, Ansible, CloudFormation, and scripting languages.
• CI/CD & Platform Engineering
• Build, maintain, and improve CI/CD pipelines using Jenkins, GitLab CI/CD, and related tooling.
• Monitoring, reliability & optimisation
• Implement and manage monitoring, logging, alerting, and performance optimisation using tools such as Grafana, ELK Stack, CloudWatch, Prometheus, and SonarQube.
• Security & compliance
• Implement IAM, encryption, network controls, and secure configurations in line with government and industry standards (e.g. GDPR, ISO 27001).
• Disaster recovery & resilience
• Design and test backup, disaster recovery, and self-healing strategies to ensure system reliability and availability.
• Collaboration & documentation
• Work closely with development, DevOps, security, and operations teams; produce runbooks, architecture documentation, and knowledge-sharing materials.

CGI's Space, Defence and Intelligence business unit delivers innovative, mission-critical solutions to some of the UK government's most complex and challenging problems. We design, build, and operate bespoke, secure systems that help keep the nation safe and secure. Our work spans cloud, on-prem, and hybrid environments, underpinned by strong cyber and engineering best practices.

Required qualifications to be successful in this role

• Proven experience as a Site Reliability Engineer, DevOps Engineer, or similar role supporting cloud-based or secure systems
• Strong automation and scripting skills (Python, Bash, Go, or similar)
• Hands-on experience with CI/CD pipelines (Jenkins, GitLab CI/CD, etc.)
• Strong knowledge of Infrastructure as Code (Terraform, CloudFormation, Ansible)
• Solid understanding of AWS and cloud-native architectures
• Experience with Linux-based environments and production troubleshooting
• Familiarity with containerisation and orchestration (OpenShift or Kubernetes)
• Experience with monitoring, logging, and observability tools
• Comfortable supporting live services in production environments
• Strong communication skills and a proactive, problem-solving mindset
• Skills: English
• GitLab
• Cloud Native Development

What you can expect from us

Together, as owners, let's turn meaningful insights into action.

Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you'll reach your full potential because ...

You are invited to be an owner from day 1 as we work together to bring our Dream to life. That's why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company's strategy and direction.

Your work creates value. You'll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise.

You'll shape your career by joining a company built to grow and last. You'll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons.

Come join our team - one of the largest IT and business consulting services firms in the world.

Position Description

CGI was recognised in the Sunday Times Best Places to Work List 2025 and named one of the World's Best Employers by Forbes. We offer a competitive salary, excellent pension, private healthcare, and a share scheme (3.5% + 3.5% matching), making you a CGI Partner rather than just an employee.

We are committed to inclusivity and building a genuinely diverse community of technology professionals.