DevOps Engineer

Willis Towers Watson; Reigate; Hybrid; GBP 90,000 - 130,000; Full time

Benefits offered by this job

Hybrid working options

25 days annual leave

Private healthcare

Job summary

Willis Towers Watson is seeking a Senior DevOps Engineer to join our global SaaS platform team. You will help evolve Radar Live SaaS, applying IaC, CI/CD, cloud automation, and SRE practices to ensure reliability and security at scale.

You’ll work across Dev, Ops, Security and Architecture in an Agile environment, building automated deployments, improving observability, and guiding best practices for Azure, OpenTofu, Terraform and AKS. Hybrid working options available.

Qualifications

• OpenTofu/Terraformを用いたIaCの実務経験が必須
• AKSクラスタの運用・オートスケーリングの実務経験
• IaC自動化の実務経験
• Azure DevOpsにおけるパイプライン設計・実装経験
• SRE思考を持ち、信頼性・可観測性の改善ができる
• 観測性の設計・導入（ログ・メトリクス・トレース）
• PowerShell/Bash/Pythonを用いた自動化スクリプト作成
• DevSecOpsのアーキテクチャ・ツールの知識

Responsibilities

• IaCモジュールの維持・拡張
• プラットフォームの信頼性・可観測性・性能の改善
• 自動化テスト・セキュリティスキャンの組み込み
• Azure DevOps YAMLパイプラインの構築と最適化
• blue/greenやカナリア等のローリスク展開を導入

Skills

OpenTofu/Terraform IaC

AKS cluster ops

IaC automation

Azure DevOps pipelines

SRE mindset

Observability

PowerShell/Bash/Python scripting

Security integration

Education

Degree in Computer Science / Engineering

Tools

AKS

Azure Front Door

APIM

Azure DNS/Key Vault

Datadog

Azure Monitor

Terraform/OpenTofu

ADO Pipelines

Job description

Description

As a Senior DevOps Engineer, you will join a substantial global engineering organisation and work in a team of highly skilled engineers in the SaaS platform area. You will be part of a team that follows Agile methodologies to deliver market-leading insurance solutions. This is a new position created as the organisation continues to grow and accelerate the delivery of innovative solutions that harness the latest advances in technology.

The role is to work on the evolution of the SaaS delivery platform for WTW’s flagship product Radar Live SaaS. You will have worked on large scale and globally deployed SaaS applications that have a mature stack management capability. A sound technical background is essential to be successful in this role with experience in delivering large scale Cloud services.

The ideal candidate will enjoy building automated, environment-agnostic cloud platforms. Have strong troubleshooting and operational instincts. Prefer IaC and policy-driven automation over manual work. Be comfortable working across Dev, Ops, Security, and Architecture. Can balance reliability, quality, speed, and practical engineering trade-offs.

The Role

As a Senior DevOps Engineer, you will be expected to:

Infrastructure-as-Code (IaC)

• Maintain and extend IaC modules using OpenTofu (Terraform fork).
• Implement reusable, parameterized templates for Azure infrastructure.
• Automate environment provisioning across development and production.
• Manage backend state, pipelines, and state-change detection integrations.

Platform Engineering & SRE

• Own and improve reliability, observability, and performance of the platform.
• Implement SLOs, alerting, dashboards, and auto remediation where possible.
• Troubleshoot cluster level, networking, and workload deployment issues.
• Lead root cause analysis (RCA) and drive long-term reliability improvements.

Automation & Tooling

• Develop automation scripts and tooling in PowerShell.
• Build and optimize Azure DevOps (ADO) YAML pipelines.
• Integrate automated testing, security scanning, and automated rollout strategies like blue/green or canary where appropriate.

Workflow & Delivery

• Work in an Agile environment using ADO for planning and tracking.
• Collaborate closely with developers, platform engineers, and security.
• Participate in on-call rotations (if required).

Qualifications

What you’ll bring

The essential skills/experience for this position are:

• Strong experience with OpenTofu/Terraform for IaC.

• Hands‑on expertise with AKS, including:

  • cluster operations

  • node pools & autoscaling

  • ingress, cert-manager, CNI

  • workload deployment patterns

• Experience of Azure Cloud Services:

  • Azure Front Door (AFD) and API Management (APIM)

  • Azure DNS, Key Vault, MSI, networking, identity / Azure Entra ID

• Monitoring: Datadog, Log Analytics, Azure Monitor

• Skilled in Scripting (PowerShell, Bash, Python) automation.

• Proficient in Azure DevOps: repos, pipelines, artifacts.

• Solid understanding of Azure networking, DNS/private endpoints, Certificate/Secret management etc

• Strong debugging and operational experience (SRE mindset).

• Solid experience of DevSecOps architecture, processes & tooling

• Solid understanding of Observability

  • Process & Tooling

  • Logging, metrics, traces, dashboards

Other highly desirable, but not essential skills are:

• Experience with:

  • GitOps - ArgoCD or GitOps workflows

  • Zero downtime deployments (blue/green/canary patterns)

  • Prometheus/Grafana

• Microsoft Azure Certification (Az-104, Az-305, Az-400).

• Kubernetes Certification (CKA).

• Terraform Associate / OpenTofu equivalent (when available).

• Experience with high volume low latency SaaS systems.

• Experience with distributed and event driven architectures.

• Experience with Ingress Solutions such as Azure Front Door and API Management.

• Experience with IAM, Authentication / Authorisation.

• Degree-educated in Computer Science, Engineering, Mathematics or equivalent industry experience

• Appreciation of current and emerging technologies along with their potential benefits and limitations.

• General knowledge of the Insurance Industry.

What we offer

Enjoy a benefits package designed to help you thrive, both professionally and personally. You'll receive 25 days of annual leave plus an extra WTW day to relax and recharge. Our comprehensive health and wellbeing offering includes private healthcare, life insurance, group income protection, and regular health assessments, all giving you peace of mind. Secure your future with our defined contribution pension scheme, featuring matched contributions up to 10% from the company.

We support your growth and balance with hybrid working options, access to an employee assistance programme, and a fully paid volunteer day to make a difference in your community. On top of these, you can opt into a variety of additional perks including an electric vehicle car scheme, share scheme, cycle-to-work programme, dental and optical cover, critical illness protection, and much more. Start making the most of your career and wellbeing with a range of benefits tailored for you.

Equal Opportunity Employer

We’re committed to equal employment opportunity and provide application, interview and workplace adjustments and accommodations to all applicants. If you foresee any barriers, from the application process through to joining WTW, please email [e-mail]

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