Job Description My client, a global leader in financial market infrastructure and trading technology, is hiring a Senior Software Engineer (Back End) to join an existing engineering team based in Belfast. This is an exciting opportunity to work on business-critical software solutions supporting global trading platforms and financial markets technology within a highly collaborative Agile environment. * Competitive salary package * Hybrid working model * Strong pension and benefits package * Flexible working * Clear career progression opportunities You will be part of a highly skilled global engineering function focused on delivering scalable, cloud-native applications that power real-time financial trading and market infrastructure systems. My client is passionate about engineering excellence, innovation, and building resilient distributed systems using modern technologies. As a Senior Software Engineer, you will design, develop, and maintain distributed backend systems using modern .NET technologies including C# and .NET Core. You will collaborate closely with Solution Architects and Principal Engineers to build scalable APIs, cloud-native applications, and event-driven services deployed across AWS and Azure environments. The role will involve working across the full software development lifecycle, contributing to technical design, automated testing, deployment, and production support while mentoring other engineers within the team. The Person * Strong commercial experience with C# and modern .NET technologies (.NET Framework / .NET Core) * Experience designing and developing distributed, cloud-native systems * Strong API development experience including REST and GraphQL * Experience working with relational databases including MSSQL and MySQL * Hands-on experience with AWS and/or Azure cloud platforms * Experience building scalable event-driven or microservices architectures * Strong understanding of the full software development lifecycle * Experience developing automated testing solutions * Strong problem-solving and communication skills * Experience working within Agile development environments Desirable * Experience with WPF development * Financial services or trading platform exposure * Knowledge of FIX protocol and messaging * Experience with serverless architecture and microservices * Exposure to Java, JavaScript, or React * Understanding of TDD / BDD methodologies For further information on this job, or any other Software Engineering jobs in Belfast or Northern Ireland, apply via the link or contact Michael Peniata for a confidential chat today. VANRATH acts as an agency and employment business for permanent recruitment and the supply of temporary workers. Successful applicants may be required to satisfactorily complete pre-employment checks (such as references, criminal record checks, right to work checks) in line with the client or VANRATH's policy.