Principal .Net Engineer

MCS Group; Belfast; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A leading recruitment agency is seeking a Principal Software Engineer in Belfast to lead the development of key internal systems. The ideal candidate will have strong expertise in .NET and AWS/Azure, and enjoy mentoring others while delivering enterprise-scale solutions. This role offers hybrid working, a strong culture of inclusivity, and opportunities for career progression.<br>Apply by sending your CV to discuss the role in confidence.

Benefits

Pension

Private health care

Hybrid working

Career growth opportunities

Qualifications

• Proven .NET backend experience, ideally in a regulated or finance environment.
• Ability to lead technical delivery while maintaining code quality and system security.
• Experience with AWS and CI/CD platforms.

Responsibilities

• Lead development on key internal systems.
• Architect and deliver enterprise-scale solutions.
• Mentor team members in a collaborative environment.

Skills

C#

Python

AWS

.NET

Leadership

Job description

Overview

MCS are delighted to be partnering with this innovative tech organisation to build a high-performing engineering function. We are looking for a Principal Software Engineer with strong .NET and AWS/Azure expertise to lead development on key internal systems.

This is a hands-on leadership role ideal for someone who enjoys mentoring others while architecting and delivering enterprise-scale solutions. You'll work across backend systems, CI/CD pipelines, and infrastructure using AWS CDK in Python.

Ideal for someone

• Has proven .NET backend experience, ideally in a regulated or finance environment
• Can lead technical delivery while maintaining code quality and system security
• Enjoys shaping infrastructure and delivery processes with tools like AWS and CI/CD platforms

This is a great opportunity to influence high-level design decisions and guide a team in a business committed to engineering excellence.

Why Apply?

This is an opportunity to join a truly global business operating at the intersection of financial markets and cutting-edge tech. You'll gain access to a collaborative environment with clear progression pathways, regular mentoring, and meaningful, large-scale engineering challenges.

• Hybrid working in Belfast
• Pension & private health care
• Company with unparalleled growth
• Strong culture of inclusivity and innovation

To speak in absolute confidence about this opportunity, please send an up to date CV via the link provided or contact matthew rainey at m.rain

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

MCS Group is committed to Equality, Diversity, and Inclusion for all, being the first recruitment agency in NI to achieve Bronze Diversity Mark accreditation. If you have a disability which means you require a reasonable adjustment to be considered at any stage of the recruitment process, please contact us and we will endeavour to facilitate the request.

Not all agencies are the same…MCS Group are passionate about providing a first-class service to all our customers and have an independent review rating of 4.9 stars on Google.

Skills: c# python aws .net principal developer engineer