.Net Software Developer

MCS Group; Belfast; Hybrid; GBP 80,000 - 100,000; Full time

Job summary

A leading financial services technology provider is seeking a mid-level .Net Software Developer to join their Belfast hub. This role involves developing complex systems using C# and SQL, building cloud-native solutions on AWS, and mentoring teammates. You'll benefit from a hybrid working model, competitive salary, and opportunities for career growth and global exposure.

Benefits

Competitive salary

Annual performance bonus

Private healthcare

Enhanced pension

Learning budget

Mentorship opportunities

Qualifications

• Strong hands-on experience in C# (.NET Core).
• Knowledge of modern front-end frameworks (ideally React).
• Proficiency with Microsoft SQL Server or similar databases.
• Experience with cloud technologies like AWS or Azure.
• Agile mindset with experience working in collaborative teams.

Responsibilities

• 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 for robust delivery.
• Take part in architectural discussions and CI/CD pipelines.
• Mentor teammates and promote engineering best practices.

Skills

C# (.NET Core)

SQL

React

AWS

Agile mindset

Job description

Overview

.Net Software Developers (Mid‑Level) – Belfast (Hybrid) – Full‑Time, Permanent.

MCS Group is working with a global market leader in financial services technology. The Belfast hub is building one of the largest and most advanced engineering hubs, focused on business‑critical trading and data platforms.

Responsibilities

• 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.

Qualifications

• Strong hands‑on experience in C# (.NET Core).
• Knowledge of modern front‑end frameworks (ideally React).
• 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 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: Modern tech hub with the security of a global business.
• Strategic investment: 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.

EEO Statement

MCS Group is committed to Equality, Diversity, and Inclusion for all. If you have a disability requiring a reasonable adjustment, please contact us and we will endeavour to facilitate the request.