Senior .Net Developer

Northern Ireland Water Limited; Belfast; Hybrid; GBP 52,000 - 62,000; Full time

Job summary

A leading global technology firm in Belfast is seeking a Senior .Net Developer to manage mission-critical trading systems. This role involves developing scalable systems, mentoring junior developers, and ensuring quality delivery. Candidates should have strong expertise in C# (.NET Core), React, and Microsoft SQL Server. The position offers a hybrid working model and a salary up to £62K, along with pension and private healthcare.

Benefits

Salary up to £62K

Pension & private health care

Company with unparalleled growth

Strong culture of inclusivity and innovation

Qualifications

• Professional experience in software engineering.
• Strong hands-on expertise in C# (.NET Core) and modern JavaScript frameworks.
• Proficiency in Microsoft SQL Server or related relational databases.

Responsibilities

• Develop, enhance, and maintain complex systems using C# (.NET Core), React, and SQL.
• Build cloud-native solutions using AWS.
• Collaborate closely with Solution Architects and QA Engineers.

Skills

C# (.NET Core)

React

SQL

AWS

Agile teams

Job description

Senior .Net Developer

Location: Belfast (Hybrid) | Type: Full-Time | Permanent

Overview

A leading global technology firm is seeking a Senior Software Developer to help manage and evolve its mission-critical trading systems. This role involves building scalable systems that directly impact market access on a global scale.

Responsibilities

• Develop, enhance, and maintain complex systems using C# (.NET Core), React, and SQL
• Build cloud-native solutions using AWS
• Collaborate closely with Solution Architects and QA Engineers to ensure robust, testable, and high-quality delivery
• Mentor junior team members, lead code reviews, and drive best engineering practices
• Contribute to architectural discussions and CI/CD pipelines

Qualifications

• Professional experience in software engineering
• Strong hands-on expertise in C# (.NET Core) and modern JavaScript frameworks (preferably React)
• Proficiency in Microsoft SQL Server or related relational databases
• Familiarity with AWS or other cloud technologies is advantageous
• Collaborative mindset with experience working in Agile teams

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 model
• Salary up to £62K
• Pension & private health care
• Company with unparalleled growth
• Strong culture of inclusivity and innovation

How to Apply

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

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

Equality, Diversity & Inclusion

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.

Notable

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.