Vanguard Technical Lead – AWS Engineering (Anti-Fraud Engineering Team) Location: London or Manchester (Hybrid) About Vanguard Vanguard is an investment company unlike any other. It was founded by Jack Bogle in the US in 1975 on a simple but revolutionary idea: that an investment company should manage its funds solely in the interests of its clients. Jack helped bring investing to the masses with the index fund. Index funds do not pick individual shares or bonds to beat the market. They track the performance of the entire market. Or as Jack put it, "Don't look for the needle in the haystack. Just buy the haystack!”. We have stood for low-cost, uncomplicated investing ever since. Over the last 45 years people have come round to our way of thinking and more than 50 million investors worldwide now trust us with their money. About the Role We are seeking a highly skilled and motivated Technical Lead to drive the development and modernization of our transaction monitoring and fraud detection systems. You will lead a cross-functional engineering team focused on building scalable, secure, and intelligent solutions to detect and prevent fraud and money laundering across our global platforms. In return we offer an attractive base salary, annual performance bonus paid in January, Partnership bonus paid in June, and competitive benefits. At Vanguard we work Monday to Friday and our staff in most roles work in the office on Tuesdays, Wednesdays and Thursdays, with Mondays and Fridays working from home. About the team The Anti-Fraud Engineering team are an integral part of Vanguards Security and Fraud capability, providing solutions that protect Vanguards clients and assets. The solutions you will develop and maintain will help prevent the fraudsters being successful. The team’s work is crucial to the success of the firm and without it our clients would not trust Vanguard with their future. Key Responsibilities + Lead the design, development, and deployment of a bespoke fraud detection and transaction monitoring system. + Collaborate with a variety of stakeholders and financial crime experts globally to define a technical vision and strategy for the platform. + Architect scalable and robust cloud solutions using a variety of in-house and third-party tools. + Ensure high code quality and engineering best practices through code reviews, mentoring, and technical guidance. + Own and evolve the technical design of core fraud detection components, ensuring performance, reliability, and maintainability. + Communicate effectively with stakeholders across engineering, product, and business teams. + Drive continuous improvement in team processes, tooling, and development workflows. + Coach and support engineers in their technical growth, fostering a culture of learning and continuous improvement. Preferred Qualifications + Proven experience as a Technical Lead or Senior Engineer in designing and delivering complex, high-impact systems within a cross-functional environment. + Strong proficiency in: + AWS (Lambda, Glue, ECS, S3, etc.) + Python and PySpark (data pipelines, APIs, automation) + TypeScript and React (frontend development) + Excellent communication and stakeholder management skills. + Demonstrated expertise in technical design and architecture of distributed systems. + Familiarity with fraud detection models, anomaly detection, and rule-based systems. + Clear understanding of secure coding practices and data privacy principles. + Exposure to CI/CD pipelines and infrastructure-as-code tools (e.g., Terraform, CloudFormation). How We Work 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.