Capco, a leading global technology and business consultancy specializing in financial services, is seeking a Principal .NET Developer for their Capital Markets division in London. This role offers an exciting opportunity to work with some of the largest banks in the world on transformative projects. The ideal candidate will be a strong team player with expertise in C#, cloud architecture, and Capital Markets domain knowledge. You'll be responsible for designing and developing enterprise-level solutions, building event-driven applications, and implementing best practices in engineering. The role combines technical excellence with domain expertise, requiring deep understanding of Trade Lifecycle processes and financial instruments. Working at Capco means joining an inclusive environment that celebrates individuality and diversity, offering competitive benefits and continuous learning opportunities. The position involves working with cutting-edge technologies including AWS services, modern database systems, and contemporary development practices like TDD. This is an excellent opportunity for a senior technologist looking to make a significant impact in the financial services sector while working with a diverse, meritocratic team.