Senior Software Engineer - Fullstack/Backend

n Project Contractor \n Project Contractor \In the European Client Identity team, we are building and operating Vanguard's authentication This is a hands-on senior full-stack role focused on designing, building, deploying, and infrastructure, and frontend experiences — with React as the preferred frontend framework You don't need to be an identity expert on day one — but you do need strong full-stack Design and implement REST APIs using NestJS / TypeScript • Build frontend experiences using React where new UI development is required • Deploy and operate services on AWS, using Infrastructure as Code • 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 • Strong backend engineering fundamentals with Node.js and NestJS or Express • TypeScript across frontend and backend • Experience designing and building REST APIs • Hands-on experience with AWS (ECS, Lambda, CloudFront, S3, Secrets Manager) • Experience writing unit and integration tests (Jest) React experience for frontend development — preferred for any new UI work • Exposure to Aurora PostgreSQL or DynamoDB • Exposure to security concepts (IAM, encryption, networking) • AWS • TypeScript • React • Node.js (NestJS) • REST APIs • Auth0 • Transmit Security • n Vanguard has implemented a hybrid working model for the majority of our crew members, designed to capture the benefits of enhanced flexibility while enabling in-person learning, collaboration, and connection. We believe our mission-driven and highly collaborative culture is a critical enabler to support long-term client outcomes and enrich the employee experience.