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Description
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.
This 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 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.
Qualifications
What you’ll bring
Platform and control plane engineering
- Practical experience designing and developing management and control plane capabilities for line of business 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 scale‑unit architectures, including multi-region or multi-tenant deployments, isolation and blast‑radius 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 object-oriented design, design patterns, SOLID principles, clean code practices, code review, documentation and Agile delivery.
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Core technical stack
- Hands-on experience with C# and .NET (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
- Hands-on 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, policy-as-code (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 multi-region considerations in multi-tenant Azure environments.
Technical leadership and communication
- Ability to run proofs of concept with emerging technologies and present outcomes to both technical and non-technical 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., AZ-204, AZ-400, AZ-305).
- Kubernetes certifications (e.g., CKA, CKAD, CKS).
- Degree in Computer Science, Engineering, Mathematics or equivalent industry experience.
- Experience with high-volume, low-latency SaaS systems.
- Experience 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 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 claims-based 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.
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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 candidatehelpdesk@wtwco.com
(ICT_TECH TD_2026_24)
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