Senior Full-Stack Software Engineer with OAuth

Endava is a technology company partnering with leading organisations to solve complex business challenges by combining AI-native engineering, industry expertise and a people-centric mindset. The role supports a strategic partnership with WTW, a global leader in insurance software and advisory services, aiding the next generation of products and services for insurers worldwide.

Software Engineering:

• 6+ years experience with C# and modern .NET.
• Strong experience designing and developing REST APIs.
• Experience building scalable enterprise applications or shared platforms.
• Strong object-oriented programming and software design principles.

Identity & Security:

• Strong understanding of OAuth 2.0, OpenID Connect (OIDC), and JWT.
• Knowledge of modern authentication and authorization concepts.
• Experience integrating with enterprise identity providers.
• Understanding of secure API design and identity-based access control.

Cloud & Platform Engineering:

• Experience developing cloud-native applications on Microsoft Azure.
• Experience with Azure DevOps, Git, and CI/CD pipelines.
• Experience with Infrastructure as Code using Terraform or OpenTofu.
• Understanding of Azure API Management or similar API Gateway technologies.

Front-End Development:

• Experience developing Angular applications using TypeScript.
• Experience building administrative or developer-facing web applications.

Engineering Practices:

• Experience writing automated tests (unit, integration, API).
• Experience working in Agile Scrum teams.
• Strong communication and collaboration skills.
• Ability to work across multiple product teams and influence technical outcomes.

Preferred Skills and Experience:

• Auth0
• Fine-Grained Authorization (FGA)
• Google Zanzibar authorization model
• Azure API Management (APIM)
• SCIM integrations
• Identity Federation
• Datadog
• Playwright
• Trivy
• GitLeaks
• Invicti
• Experience building reusable developer platforms
• Experience working with enterprise shared services

Identity Platform Development:

• Design, develop and maintain authentication and authorization services using modern .NET technologies.
• Develop reusable platform services supporting secure authentication and authorization.
• Build scalable REST APIs and integration services.
• Develop and maintain Angular-based administration portals.
• Contribute to Fine-Grained Authorization (FGA) capabilities and centralized access management.

Platform Services & Developer Experience:

• Develop reusable SDKs, libraries, and APIs for enterprise identity platform integration.
• Build developer tooling for onboarding and adoption.
• Produce and maintain technical documentation.
• Design stable, reusable platform interfaces.
• Lead technical work packages and guide other engineers.

Cloud & Platform Engineering:

• Develop cloud-native services on Microsoft Azure.
• Build and maintain reverse proxy with Azure API Management.
• Support Infrastructure as Code using OpenTofu/Terraform.
• Contribute to CI/CD pipelines with Azure DevOps.
• Improve platform scalability, security, and resilience.

Engineering Excellence:

• Write unit, integration, and automated tests.
• Participate in peer reviews and architecture discussions.
• Promote Clean Code, automated testing, and secure development.
• Collaborate with Product Owners, Architects, QA, and Platform Engineers.
• Mentor less experienced engineers.

Operations & Collaboration:

• Participate in third-line production support and on-call rotation.
• Investigate production issues and enhance reliability.
• Collaborate with multiple product teams integrating with the platform.
• Contribute to Endava's ownership of Authentication & Authorization capability.