Senior Software Engineer - Identity & Authentication; Backend

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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.

• Build and evolve backend services that support login,
  MFA
  , and client authentication
• Design and implement REST APIs using NestJS /
  Type Script
• Integrate with identity and MFA platforms (e.g. Auth0, Transmit Security)
• Deploy and operate services on AWS
  , using Infrastructure as Code
• Run and maintain services in production, including:
  • database migrations and updates
  • manage vendor‑specific software services running in AWS
• Write automated tests and contribute to improving test coverage and quality
• Participate in CI/CD pipelines
  , deployments, and operational procedures
• Work closely with product and security stakeholders to translate requirements into technical solutions
• Continuously improve engineering standards, tooling, and reliability

AWS
• Type Script  
• Node.js (NestJS)
• REST APIs
• Auth0
• Transmit Security
• Git Hub
• Git Hub Actions
• Cloud Formation

• Build and evolve backend services that support login, MFA, and client authentication
• Design and implement REST APIs using NestJS /
  Type Script
• Integrate with identity and MFA platforms (e.g.
  Auth0
  , Transmit Security
  )
• Deploy and operate services on AWS
  , using Infrastructure as Code
• Run and maintain services in production (including database migrations and update vendor‑hosted services running in AWS
  )
• Write automated tests and contribute to improving test coverage and quality
• Participate in CI/CD pipelines
  , deployments, and operational procedures
• Work closely with product and security stakeholders to translate requirements into technical solutions
• Continuously improve engineering standards, tooling, and reliability

• Experience with identity, authentication, or MFA systems
• Knowledge of microservices architectures
• Exposure to security concepts (IAM, encryption, networking)
• Experience in regulated or enterprise environments

• Vanguard is not offering sponsorship for this position
• This role is open to candidates to work in both our London or Manchester offices
• This is a hybrid position and would require you to work in the office 3 days per week (Tuesday, Wednesday & Thursday)

Vanguard is a different kind of investment company. It was founded in the United States in 1975 on a simple but revolutionary idea: that an investment company should manage its funds solely in the interests of its clients.

This is a philosophy that has helped millions of people around the world to achieve their goals with low‑cost, uncomplicated investments.

It's what we stand for: value to investors.

Vanguard's continued commitment to diversity and inclusion is firmly rooted in our culture. Every decision we make to best serve our clients, crew (internally employees are referred to as crew), and communities is guided by one simple statement: "Do the right thing."

We believe that a critical aspect of doing the right thing requires building diverse, inclusive, and highly effective teams of individuals who are as unique as the clients they serve. We empower our crew to contribute their distinct strengths to achieving Vanguard's core purpose through our values.

When all crew members feel valued and included, our ability to collaborate and innovate is amplified, and we are united in delivering on Vanguard's core purpose: to take a stand for all investors, to treat them fairly, and to give them the best chance for investment success.

Vanguard is an equal opportunity employer.…