Principal Software Engineer (Northern Ireland)

Opportunity to join a global Fintech organisation that are revolutionising customer experience with next-generation capabilities!

My client is seeking an experienced Principal Software Engineer to lead the design, development, and strategy of core backend systems — including APIs, payment infrastructure, and platform services.

About the Role:

You’ll take a lead role in driving technical excellence across engineering teams, combining strategic architectural thinking with hands-on coding. This position involves shaping the design and delivery of scalable, cloud-native platforms, while setting and promoting best practices that guide development efforts.

As a key technical leader, you’ll influence how teams build software — introducing reusable patterns, optimising system performance, and ensuring maintainable, high-quality code. You’ll work across a broad technology stack (.NET Core, AWS, Docker, messaging systems, RESTful APIs), contributing to high-impact systems that support global operations.

Key Requirements:

• Bachelor’s degree or equivalent experience in a relevant field.
• 10+ years software development experience
• Proven track record of technical leadership, with experience mentoring engineering teams and guiding cross-functional decision-making.
• Deep expertise in designing, building, and integrating RESTful APIs within complex enterprise environments.
• Hands-on development background in .NET Core, Java, or equivalent technologies, with strong knowledge of cloud-native and microservices-based architectures.
• Proficient in modern infrastructure tools and practices, including Docker, AWS (preferred), message queues, caching mechanisms, and relational databases.
• Experience in payments or financial services is advantageous but not required.

Why Join?

• Fully remote working
• Unlimited holidays
• Private healthcare plan
• Bonus and MORE!!

For a chat about this Principal Software Engineer role (or any other) please contact Fionnghuala Mullan on 02895 211121 / Fmullan@realtime.jobs in strictest confidence – or simply apply via the link.