Senior Platform Engineer in Reigate, United Kingdom

As a Senior Software Engineer (SaaS), you will join a substantial global engineering organisation and provide leadership to highly skilled engineers in the software 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 is a dedicated role to work on the evolution of ICT Platform Infrastructure capabilities which are the foundation of many of WTW’s market leading products. 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 https://jobeax.com/link/tHIqorVnn7E6RAlq Role:Provide technical input, guidance and leadership to the team (including code quality, best practices, processes, some aspects of release management, etc.).Assist in the design and documenting of solutions meeting functional and non-functional https://jobeax.com/link/NK5DncGd3n25IBb9 by example getting directly involved in the day-to-day delivery of work with hands-on development, following best practices for maintainability, testability and https://jobeax.com/link/KYq0jGpcRb9CMN78 in sprint planning meetings, daily stand-ups and sprint retrospectives, striving to continuously improve the team velocity, its processes and engineering https://jobeax.com/link/89iywp0t9FoZpKnU and mentor colleagues where appropriate, fostering a collaborative and quality-focused engineering https://jobeax.com/link/qTOskaaLXJQ0BhV4 you’ll bringPlatform and control plane engineeringPractical experience designing and developing management and controlplane capabilities for line of business or SaaS applications, including stack/environment management, API design for platform services, and developer/operator https://jobeax.com/link/tbwtbDAYxbAUuJEK working with or designing Azure stamp-based or scale‑unit architectures, including multi-region or multi-tenant deployments, isolation and blast‑radius reduction, and automated stamp lifecycle https://jobeax.com/link/htMeAVmrbrFTP67Q product lifecycleDemonstrated experience across the full SaaS development lifecycle: requirements analysis, estimation, architecture/design, implementation, unit and system testing, deployment, operations, monitoring and incident https://jobeax.com/link/Qv4x6TwlRO2uuw14 engineering fundamentalsStrong grounding in objectoriented design, design patterns, SOLID principles, clean code practices, code review, documentation and Agile https://jobeax.com/link/N0GTPln4goQWIw15 technical stackHands‑on experience with C# and .NET (Core/6+) for backend and service https://jobeax.com/link/AP9AWyjrn6vAFyBC practical experience with Azure cloud and SaaS services (e.g., Container Apps, AKS, Azure Storage, Azure SQL/Cosmos DB, Key Vault, Azure Monitor, Log Analytics).Containers, Container Apps, Kubernetes and microservicesExperience designing, building and operating containerised microservices, including Docker image design, optimisation, Container Apps, Kubernetes (preferably AKS) deployment and scaling strategies, and Kubernetes configuration, secrets and traffic https://jobeax.com/link/uAbwflYt5Bh4qHP6 as Code and platform automationExperience with IaC using OpenTofu or Terraform on Azure, producing modular, reusable, and maintainable infrastructure https://jobeax.com/link/yNvWcsJQr0CiQ1xI automating environment and stamp provisioning, implementing blue/green or canary deployments, and detecting/remediating infrastructure https://jobeax.com/link/KAQU0xjwrzLENH5H and DevOpsHands‑on experience building CI/CD pipelines in Azure DevOps (Pipelines, Repos), including environments and quality https://jobeax.com/link/2PkwJmjGbrRaJUF3 with GitHub and GitHub Actions for reusable workflows, build/test/deploy automation and integration with platform https://jobeax.com/link/XmLvJO2tKxDhzw1D and testing of infrastructure and platformsExperience implementing automated testing for infrastructure and platform components, including IaC unit/integration tests, deployment validation, policy‑as‑code (Azure Policy, OPA) and IaC https://jobeax.com/link/11xE9Wgr5WpAGcRY and complianceStrong understanding of cloud and SaaS security best practices: least privilege, managed identities, secret management, network security, private endpoints, and secure software supply chain practices (image scanning, SBOM, dependency governance).Awareness of compliance, data residency and multi‑region considerations in multi‑tenant Azure https://jobeax.com/link/ksvHrvgTZzhwKDJM leadership and communicationAbility to run proofs of concept with emerging technologies and present outcomes to both technical and non‑technical fortable partnering with application teams to gather requirements and shape platform https://jobeax.com/link/piW6AV4apHKsAfe8 highly desirable, but not essential skills are:Microsoft Azure certifications (e.g., AZ‑204, AZ‑400, AZ‑305).Kubernetes certifications (e.g., CKA, CKAD, CKS).Degree in Computer Science, Engineering, Mathematics or equivalent industry https://jobeax.com/link/6sJyHYEbWQH22DWl with high‑volume, low‑latency SaaS https://jobeax.com/link/FOCjSGTxxwh8gD1l with distributed and event‑driven architectures (Azure Service Bus, Event Hubs, Event Grid, Kafka).Experience building multi‑tenant architectures, including tenant provisioning, routing and per‑tenant configuration/quota https://jobeax.com/link/nmLZ1400PPvbPH4K with Azure ingress and global routing solutions such as Azure Front Door, Application Gateway, and Azure API https://jobeax.com/link/nmLZ1400PPvbPH4K with identity and access management using Azure AD/Entra ID, B2B, RBAC, OAuth2, OIDC, JWT and claims‑based https://jobeax.com/link/gS0GMFT46J3htiAs in platform engineering or SRE roles: building internal platforms, defining SLIs/SLOs, managing error budgets, and implementing observability (centralised logging, metrics, distributed tracing).Strong awareness of emerging cloud, AI, DevOps and platform technologies, with an understanding of their applicability to SaaS https://jobeax.com/link/EOVateDcCiwmg1k7 knowledge of the insurance industry or other regulated https://jobeax.com/link/u5baTm1pDuMumB1q we offerEnjoy 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 https://jobeax.com/link/ugvWulHi7uACgZo1 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 https://jobeax.com/link/v3vpOxdDEFiBpHRU 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 candidatehelpdesk@(ICT_TECH TD_2026_24)Full timePosting Date: 2026-08-26