VANRATH are partnering with a global FinTech company to recruit for a Principal Software Engineer to join a high-performing technology team. This is a fantastic opportunity to work on business-critical platforms used by major players in the global market. As the Principal Software Engineer you will have the opportunity to work on modern cloud-native platforms using .NET, while shaping the engineering culture of a forward-thinking team. What You'll Be Doing Provide technical mentorship to engineers and help align development efforts with project timelines and goals Design, develop, and support scalable software solutions Work closely with Business Analysts and Project Managers to refine and translate technical requirements Implement Infrastructure as Code (IaC) using AWS CDK with Python Manage and improve CI/CD pipelines, with a strong emphasis on automated testing and code quality Ensure cloud-based systems are secure, high-performing, and highly available Actively participate in agile ceremonies and foster a collaborative agile environment Create and maintain clear technical documentation for architecture, design, and processes What You'll Bring Proven experience in a Principal .NET Engineering role Strong hands-on expertise in cloud technologies, particularly within AWS Solid understanding of unit testing, CI/CD pipelines, and Agile practices Experience with Entity Framework, contract-first API design, and microservices architecture Bonus Skills (Nice to Have) Exposure to Docker and Kubernetes Experience working with relational and NoSQL databases Familiarity with tools like Git, JIRA, and a strong focus on documentation Benefits A highly competitive salary package Annual bonus and performance incentives Generous pension and private medical insurance Hybrid working model (3 days in office) And many more! For more information about this opportunity - or to discuss other IT roles in Belfast or across Northern Ireland - please apply via the link below or reach out to Jarlath O'Rourke in strict confidence. Skills: .Net C# Aws React Javascript