Senior Software Engineer - Identity & Authentication (Backend) - Contractor

In the European Client Identity team, we are building and operating Vanguard’s authentication and MFA platform used by hundreds of thousands of clients across the UK and Europe.

This is a hands-on senior backend role focused on designing, building, deploying, and operating cloud-based identity services. You will work in a highly regulated environment where security, reliability, and operational discipline matter.

You don’t need to be an identity expert on day one—but you do need strong backend fundamentals, cloud experience, and a responsible, methodical engineering mindset.

This is a contractor role, available for up to 12-months.

In this role you will

• Build and evolve backend services that support login, MFA, and client authentication
• Design and implement REST APIs using NestJS / TypeScript
• Integrate with identity and MFA platforms (e.g. Auth0, Transmit Security)
• Deploy and operate services on AWS, using Infra...