Site Reliability Engineer in London

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Job Description
Excellent opportunity for Site Reliability Engineer to be part of our Cloud Infrastructure & Security services practice. Cognizant Infrastructure Services – Provides IT infrastructure & Cloud services for clients across industry verticals, including both Consulting/Professional and Managed Services, across Enterprise Computing, Cloud services, Security Services, DevOps, Data Centres, End User Computing, Service Desk, Network Services and Environment Management Services.
Candidate should be SC Cleared
Key responsibilities
Build CI/CD you can trust: Design, implement, and operate pipelines in GitHub Actions and Jenkins that deliver zero‑touch, repeatable releases with quality gates, automated tests, and policy‑as‑code controls. Containerise services with Docker and standardise build images. Provision everything as code: Model cloud resources using Terraform (workspaces, modules, registries, drift detection), enabling composable, reviewed changes across environments. Run scalable compute: Stand up and operate container platforms — Kubernetes (incl. EKS, AKS, GKE), ECS, and Azure Container Instances (ACI) — including cluster lifecycle, node pools, autoscaling, ingress, service mesh, secrets, and backup/restore. Observability : Instrument services and infra with New Relic, Grafana (incl. Loki/Tempo where applicable) and cloud‑ telemetry. Define SLIs/SLOs, build actionable dashboards, alerts, and runbooks that drive fast MTTR. Engineer for reliability & cost: Apply SRE practices (error budgets, change management, resilience testing), right‑size resources, and use cloud provider tooling for security/cost posture. Incident response & on‑call: Participate in a fair, documented on‑call rota; lead and/or contribute to incident handling, comms, post‑incident reviews, and corrective actions. Security & compliance by design: Embed IAM least‑privilege, secrets management, image/provenance scanning, and guardrails into pipelines and Terraform modules.
Key Skills and Experience:
Proven experience operating production systems on a major cloud (AWS/Azure/GCP) with solid cloud fundamentals (networking, IAM, storage, compute, HA/DR). Hands‑on IaC with Terraform (modules, state, CI validation, policy checks). Strong CI/CD skills in GitHub Actions and/or Jenkins (runners/agents, reusable workflows, secrets, matrix builds, artefact management). Containers & orchestration: Kubernetes administration knowledge (controllers, scheduling, ingress, autoscaling, troubleshooting) and experience with EKS/AKS/GKE and/or ECS/ACI. Observability: Practical use of New Relic and Grafana to define metrics/traces/logs, tune alerts, and drive SLOs. Scripting & automation: Proficiency in Python and Bash; experience with boto3 or equivalent SDKs. Incident management: Exposure to production incidents, on‑call participation, and post‑incident review practices. Clear communication, stakeholder partnership, and a bias to automate, document, and simplify.
At Cognizant you will experience an exciting mix of innovation by design, creativity, collaboration, and efficiency within a framework of stimulating objectives and a passion for delivering the best to our customers.
You will be joining a network of some of the most creative, innovative, and dedicated people in the industry with ample opportunities to learn and develop your career.
Our Associates are chosen for their attitude, skills, knowledge, and enthusiasm but above all, their belief that anything is possible.
Cognizant is an equal opportunities employer, and we welcome all applications regardless of , , , , , or beliefs, , , , political opinions, or trade union membership.
If you are interested in applying for this job please press the Apply Button and follow the application process. Energy Jobline wishes you the very best of luck in your next career move.
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Location:
London
Job Type:
FullTime
Category:
Engineer, Reliability Engineer, Reliability, Engineering, Site

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