Senior Full Stack Engineer (Belfast-Hybrid)

MCS Group is delighted to be working with a global fintech market leader as they continue to scale their next-generation platform team with the addition of a Senior Full Stack Engineer . This is a unique opportunity to join a newly formed, high-performing engineering function building a greenfield platform in partnership with AWS. You'll work on cutting-edge, event-driven systems in a truly global environment, contributing across the full SDLC while mentoring junior engineers and influencing architectural decisions. The Role:
You'll take ownership of design, development, testing, and deployment of scalable services, driving engineering best practice and contributing to a modern microservices architecture. This role offers strong exposure to AWS-native technologies and the chance to work closely with senior technical stakeholders. Key Requirements: 5+ years' experience in full stack or backend engineering (TypeScript preferred) Strong experience with React, TypeScript, REST/GraphQL APIs Solid backend development experience (Node.js / C# / Java) Experience with AWS (Lambda, API Gateway, AppSync, Fargate) Microservices, event-driven architecture & messaging systems Strong database experience (SQL & NoSQL) CI/CD, testing, and Agile delivery experience Desirable: Experience in financial systems or regulated environments C# / .NET exposure Knowledge of low-latency systems This is an excellent opportunity to work on a highly visible platform with real impact, within a collaborative, forward-thinking engineering culture.

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

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