Senior Platform Engineer – Cloud-Native SaaS Lead

WTW group; Greater London; Hybrid; GBP 90,000 - 120,000; Full time

Benefits offered by this job

Hybrid working options

Private healthcare

Life insurance

Employee assistance programme

Share scheme

25 days annual leave

Job summary

WTW is seeking a Senior Software Engineer (SaaS) to join a global engineering team. You will provide technical leadership, hands-on development, and drive best practices across platform services and cloud infrastructure.

You will work on Azure-based, multi-region SaaS systems, guide architecture and deliver secure, scalable software, while mentoring engineers in an agile environment with a strong focus on quality and performance.

Qualifications

• Leadership and mentoring experience in large teams.
• Strong background in OO design, SOLID, and clean code.
• Proven expertise with C#/.NET backend and cloud SaaS platforms.
• Experience with Azure services and containerized microservices.

Responsibilities

• Provide technical input, guidance and leadership to the team.
• Design and document solutions for functional and non-functional requirements.
• Lead by example with hands-on development and quality practices.
• Participate in sprint ceremonies and improve team velocity.

Skills

Leadership

Agile methodologies

C# / .NET

Azure cloud

Kubernetes

CI/CD

Security best practices

DevOps tooling

Education

Bachelor's degree in CS/Engineering

Tools

Azure AKS

Terraform/OpenTofu

GitHub Actions

Azure DevOps

Container Apps

Cosmos DB/SQL

Key Vault

Job description

WTW is seeking a Senior Software Engineer (SaaS) to join a global engineering team. You will provide technical leadership, hands-on development, and drive best practices across platform services and cloud infrastructure.

You will work on Azure-based, multi-region SaaS systems, guide architecture and deliver secure, scalable software, while mentoring engineers in an agile environment with a strong focus on quality and performance.