Senior Software Developer Location: Belfast (Hybrid) | Type: Full-Time | Permanent 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. What you'll do? 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 What We're Looking For? Professional exeprience 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 technolgoies 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 £60K 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 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 sameMCS 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: software developer software engineer c# developer .net developer senior developer react