Principal Software Engineer (.Net)

MCS Group; Belfast; Hybrid; GBP 72,000 - 85,000; Full time

Job summary

A forward-thinking technology company in Belfast is seeking a Principal Software Engineer with deep .NET expertise. This hands-on leadership role emphasizes technical ownership and coaching. The ideal candidate will have a strong background in .NET, experience in regulated environments, and a passion for optimizing workflows. The role offers up to £85,000, hybrid work, and a collaborative culture focused on engineering excellence.

Benefits

Pension & private healthcare

Bonus

Strong progression opportunities

Qualifications

• Strong background in .NET backend engineering within a regulated or financial services setting.
• Experience leading technical delivery with a focus on code quality, scalability, and security.
• Passion for optimizing infrastructure and delivery workflows.

Responsibilities

• Lead architecting and delivering enterprise-grade software.
• Drive high-level design and influence technical strategy.
• Coach others while owning technical aspects of projects.

Skills

.NET backend engineering

Technical delivery

AWS or Azure

CI/CD tools

Security and scalability focus

Job description

MCS are excited to be supporting a forward-thinking technology company as they scale their engineering capabilities for the next phase of growth. We're searching for a Principal Software Engineer with deep .NET expertise and strong experience cloud technologies (either AWS or Azure), to take a leading role in developing and evolving critical internal systems.

This is a hands-on leadership position suited to someone who thrives on technical ownership while coaching others to reach their potential. You'll play a key role in architecting and delivering enterprise-grade software, shaping everything from backend systems and CI/CD pipelines to infrastructure automation.

What we're looking for:

• Strong background in .NET backend engineering, ideally within a regulated or financial services setting.
• Experience leading technical delivery with a focus on code quality, scalability, and security.
• A passion for optimising infrastructure and delivery workflows, leveraging AWS or Azure, and modern CI/CD tools.

This role offers the chance to drive high-level design and influence technical strategy in an organisation that truly values engineering excellence.

Why join?
You'll be part of a global business operating at the intersection of finance and cutting-edge technology, where your work has real impact. Expect a collaborative culture, strong progression opportunities, and the support to take on complex engineering challenges at scale.

• Hybrid working model (Belfast-based)
• Pension & private healthcare and bonus.
• Rapidly growing organisation with strong market momentum
• Inclusive, innovative culture that celebrates technical curiosity.

Salary

Up to £85,000 depending on experience

To speak in absolute confidence about this opportunity, please send an up-to-date CV via the link provided or contact Djay Erskine, Specialist IT Recruitment Consultant, at MCS Group

Even if this position is not right for you, we may have others that are. Please visit MCS Group to view a wide selection of our current and exclusive roles www.mcsgroup.jobs

All conversations will be treated in the strictest of confidence.