Senior Platform Engineer

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 WTWs 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 services.

The 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 requirements.
• Lead by example getting directly involved in the day-to-day delivery of work with hands-on development following best practices for maintainability testability and performance.
• Participate in sprint planning meetings daily stand-ups and sprint retrospectives striving to continuously improve the team velocity its processes and engineering practices.
• Coach and mentor colleagues where appropriate fostering a collaborative and quality-focused engineering culture.

What youll bring

• Platform and controlplane engineering

  • Practical experience designing and developing management and controlplane capabilities for lineofbusiness or SaaS applications including stack/environment management API design for platform services and developer/operator UX.

  • Experience working with or designing Azure stamp-based or scaleunit architectures including multi-region or multi-tenant deployments isolation and blastradius reduction and automated stamp lifecycle management.

• SaaS product lifecycle

  • Demonstrated experience across the full SaaS development lifecycle: requirements analysis estimation architecture/design implementation unit and system testing deployment operations monitoring and incident management.

• Software engineering fundamentals

  • Strong grounding in objectoriented design design patterns SOLID principles clean code practices code review documentation and Agile delivery.

• Core technical stack

  • Handson experience with C# (Core/6) for backend and service development.

  • Strong 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 microservices

  • Experience 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 management.

• Infrastructure as Code and platform automation

  • Experience with IaC using OpenTofu or Terraform on Azure producing modular reusable and maintainable infrastructure definitions.

  • Experience automating environment and stamp provisioning implementing blue/green or canary deployments and detecting/remediating infrastructure drift.

• CI/CD and DevOps

  • Handson experience building CI/CD pipelines in Azure DevOps (Pipelines Repos) including environments and quality gates.

  • Familiarity with GitHub and GitHub Actions for reusable workflows build/test/deploy automation and integration with platform tooling.

• Automation and testing of infrastructure and platforms

  • Experience implementing automated testing for infrastructure and platform components including IaC unit/integration tests deployment validation policyascode (Azure Policy OPA) and IaC linting.

• Security and compliance

  • Strong 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 multiregion considerations in multitenant Azure environments.

• Technical leadership and communication

  • Ability to run proofs of concept with emerging technologies and present outcomes to both technical and nontechnical audiences.

  • Comfortable partnering with application teams to gather requirements and shape platform capabilities.

Other highly desirable but not essential skills are:

• Microsoft Azure certifications (e.g. AZ204 AZ400 AZ305).

• Kubernetes certifications (e.g. CKA CKAD CKS).

• Degree in Computer Science Engineering Mathematics or equivalent industry experience.

• Experience with highvolume lowlatency SaaS systems.

• Experience with distributed and eventdriven architectures (Azure Service Bus Event Hubs Event Grid Kafka).

• Experience building multitenant architectures including tenant provisioning routing and pertenant configuration/quota management.

• Experience with Azure ingress and global routing solutions such as Azure Front Door Application Gateway and Azure API Management.

• Experience with identity and access management using Azure AD/Entra ID B2B RBAC OAuth2 OIDC JWT and claimsbased authorisation.

• Experience 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 platforms.

• General knowledge of the insurance industry or other regulated domains.

What we offer

Enjoy a benefits package designed to help you thrive both professionally and personally. Youll 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

Were 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

(ICTTECH TD202624)