Principal Software Engineer

Realtime Recruitment; Northern Ireland; Remote; GBP 60,000 - 90,000; Full time

Job summary

Realtime Recruitment is looking for a Principal Software Engineer to join a leading global Fintech organization. This role encompasses leadership in creating a scalable, cloud-native platform, and responsibilities include influencing software development practices and ensuring high-quality code delivery. Ideal candidates should possess over 10 years of software development experience and deep technical expertise in .NET Core and RESTful APIs.

Benefits

Fully remote working

Unlimited holidays

Bonus and more

Qualifications

• 10+ years software development experience required.
• Background in .NET Core, Java, or equivalent technologies.
• Experience in payments or financial services is a plus.

Responsibilities

• Lead the design and development of core backend systems.
• Influence how teams build software and introduce reusable patterns.
• Ensure maintainable, high-quality code across teams.

Skills

Technical Leadership

RESTful APIs

Cloud-Native Architecture

Microservices

Proficient in Docker

Java

.NET Core

Education

Bachelor’s degree or equivalent experience in a relevant field

Tools

AWS

Job description

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Realtime Recruitment provided pay range

This range is provided by Realtime Recruitment. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Direct message the job poster from Realtime Recruitment

Senior IT Recruitment Consultant at RealTime Recruitment

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
• Bonus and MORE!!

For a chat about this Principal Software Engineer role (or any other) please contact Fionnghuala Mullan on 02895 211121 / [e-mail] in strictest confidence – or simply apply via the link.

Seniority level

• Seniority level

  Not Applicable

Employment type

• Employment type

  Full-time

Job function

• Job function

  Information Technology

• Industries

  Staffing and Recruiting

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