.Net Software Developer

.Net Software Developers (Mid-Level) Location: Belfast (Hybrid) Type: Full-Time Permanent

MCS Group is delighted to be working with a global market leader in financial services technology that is building one of the largest and most advanced engineering hubs in Belfast. MCS have helped this company hire over 150 people and they are a core delivery hub working on business-critical trading and data platforms used across the globe.

As part of a major technology growth programme, the Belfast office is hiring mid level .NET Software Developers to shape next-generation trading systems and deliver large-scale engineering solutions.

What you'll do Develop, enhance, and maintain complex systems using C# (.NET Core) and SQL

Build scalable, cloud-native solutions on AWS

Collaborate closely with Architects and QA Engineers to ensure robust, testable, and high-quality delivery

Take part in architectural discussions and CI/CD pipelines

Mentor teammates, contribute to code reviews, and promote engineering best practices

What we're looking for Strong hands-on experience in C# (.NET Core)

Knowledge of modern frontend frameworks

Proficiency with Microsoft SQL Server or similar databases

Experience with cloud technologies like AWS or Azure

Agile mindset with experience working in collaborative teams

Financial services knowledge is beneficial but not essential

Why this opportunity is different Impactful engineering: Belfast engineers aren't just maintaining systems - they own delivery of trading platforms, low-latency pipelines, and global data infrastructure.

Modern practices: CI/CD, AWS-first, containerised deployments, cross-functional squads, and a brand-new strategic partnership with AWS.

Career growth: Structured career paths into architecture, leadership, and platform ownership.

Scale & stability: The speed and autonomy of a modern tech hub with the security of a global business.

Strategic investment: Following recent acquisitons, Belfast is central to delivering next-generation trading solutions.

What to expect working here Hybrid working model - 3 days onsite in Belfast

Competitive salary + annual performance bonus

Private healthcare and enhanced pension

Global exposure - work with teams in London, Paris, New York

Learning budget, training, and mentorship opportunities

Inclusive, innovative culture with low attrition

To speak in absolute confidence about this opportunity, please send an up to date CV via the link provided or contact Matthew Rainey at

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.

Full job description from the advertiser. Apply for this role →