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Principal .Net Software Engineer

Job in Belfast, County Antrim, BT1, Northern Ireland, UK
Listing for: MCS Group
Full Time position
Listed on 2026-07-06
Job specializations:
  • Software Development
    Backend Developer, Cloud Engineer - Software, Software Engineer, Software Architect
Salary/Wage Range or Industry Benchmark: 58000 GBP Yearly GBP 58000.00 YEAR
Job Description & How to Apply Below

Principal Software Engineer (.NET) – Belfast – Hybrid

MCS Group is working with a global technology-driven financial services organisation as they continue to grow their Belfast engineering team.

This is an opportunity for a Principal Software Engineer to take ownership of technical direction, lead a high-performing engineering team and help shape the architecture of large-scale, business-critical platforms used globally.

Qualifications
  • C#, .NET / .NET Core and distributed systems
  • Cloud technologies (AWS or Azure)
  • REST APIs and event-driven architectures
  • Leading engineering teams in Agile environments
  • Designing scalable, resilient enterprise applications

Experience with in financial services, trading platforms, FIX protocol, WPF, React or microservices would be beneficial but isn't essential.

Benefits
  • Salary up to £58,000
  • Bonus scheme
  • Hybrid working (3 days in the Belfast office)
  • Private healthcare
  • Enhanced pension
  • Generous annual leave with the option to buy more
  • Ongoing learning and career progression within a global engineering organisation

This is a fantastic opportunity to join a business that invests heavily in technology, offers genuine technical ownership, and provides clear progression into senior leadership.

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.raineys. 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 group.jobs.

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.

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