Principal Software Engineer - .Net

VanRath; Belfast; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A global FinTech company is seeking a Principal Software Engineer to join their team in Belfast. The role involves working on modern cloud-native platforms using .NET and AWS. Candidates should have a strong background in mentoring, designing software solutions, and implementing Infrastructure as Code. This position offers a competitive salary, annual bonuses, and a hybrid working model (3 days in office).

Benefits

Highly competitive salary package

Annual bonus and performance incentives

Generous pension and private medical insurance

Hybrid working model (3 days in office)

Qualifications

• Proven experience as a Principal .NET Engineer, preferably in the finance sector.
• Strong knowledge of AWS and IaC (CDK + Python).
• Experience with unit testing, CI/CD, and agile methodologies.

Responsibilities

• Mentor engineers and align development with project goals.
• Collaborate to refine technical requirements.
• Document technical designs and processes.

Skills

Mentoring engineers

Designing and building software solutions

Collaboration with BAs and PMs

Implementing Infrastructure as Code

Maintaining CI/CD pipelines

Ensuring security and performance

Agile methodologies

Tools

.NET

AWS

Python

Entity Framework

Docker

Kubernetes

Git

JIRA

Job description

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.