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 systemsStrong database experience (SQL & NoSQL)CI/CD, testing, and Agile delivery experience
Desirable:

Experience in financial systems or regulated environmentsC# / .NET exposureKnowledge 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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