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Senior Software Engineer - Identity & Authentication

London, United Kingdom💼 Full-time🗓 2026-07-15 → 2026-07-31

Core

Designing, building, deploying, and operating cloud-based identity services including backend APIs, cloud infrastructure, and frontend experiences for authentication and MFA.

Role type

Senior full-stack software engineer (identity & authentication)

Builds

Backend services, REST APIs, frontend UI components, and cloud infrastructure for identity platforms

Domain

Financial services (Vanguard) / Cloud Infrastructure / Identity & Access Management

Deliverable

production ML models | product features | infrastructure

Required skills

Node.js, TypeScript, NestJS, REST API design, AWS (ECS, Lambda, CloudFront, S3, Secrets Manager), Infrastructure as Code (CloudFormation/Terraform), Docker, Git, CI/CD, Unit/Integration testing (Jest), OAuth 2.0, JWT, MFA flows

Preferred skills

React, Identity/MFA systems, Kong API Gateway, Aurora PostgreSQL/DynamoDB, Microservices, Security concepts (IAM, encryption), Observability tooling

Technologies

AWS, TypeScript, React, Node.js, NestJS, Auth0, Transmit Security, Kong Gateway, GitHub Actions, CloudFormation, Docker, Jest, OpenTelemetry, Grafana, Honeycomb

Responsibilities

Build and evolve backend services for login and MFA; Design and implement REST APIs; Build frontend experiences using React; Integrate with identity platforms; Deploy and operate services on AWS; Manage vendor-specific software services; Write automated tests; Participate in CI/CD pipelines; Work with product and security stakeholders; Improve engineering standards and reliability

Seniority

Senior, hands-on IC

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