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, AWS, while shaping the engineering culture of a forward-thinking team.

What You'll Do

Mentor engineers and align development with project goals and timelines
Design, build, and maintain software solutions
Collaborate with BAs and PMs to shape and refine technical requirements
Implement Infrastructure as Code (IaC) using AWS CDK (Python)
Maintain CI/CD pipelines and drive code quality through unit testing
Ensure security, performance, and availability of cloud-based systems
Participate in agile ceremonies and promote a strong agile culture
Document technical designs, processes, and system architecture

What We're Looking For

Proven experience as a Principal .NET Engineer (finance sector a plus)
Strong AWS knowledge with hands-on IaC (CDK + Python)
Solid experience with unit testing, CI/CD, and agile methodologies
Familiarity with Entity Framework, contract-first design, and microservices

Nice to Have

Docker, Kubernetes exposure
Experience with relational/NoSQL databases
Git, JIRA, and strong documentation skills

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 further information on this vacancy, or any other IT roles in Belfast or wider Northern Ireland, please apply via the link below or contact Jarlath O'Rourke on in the strictest confidence.

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Principal Software Engineer - .Net

Job Description