Principal Software Engineer

Realtime Recruitment; Wakefield; Remote; GBP 70,000 - 110,000; Full time

Job summary

A global Fintech organization is seeking a Principal Software Engineer to lead technical initiatives in backend systems and API design. In this fully remote role, you will shape the development of cloud-native platforms, mentor teams, and promote best practices across technology stacks including .NET Core and AWS, with an emphasis on systems supporting financial services.

Benefits

Fully remote working

Unlimited holidays

Private healthcare plan

Bonus

Qualifications

• 10+ years software development experience.
• Expertise in RESTful APIs design and integration.
• Experience mentoring engineering teams.

Responsibilities

• Lead design and development of backend systems, APIs, and payment infrastructure.
• Drive technical excellence across engineering teams.
• Contribute to scalable, cloud-native platforms.

Skills

Technical Leadership

Software Development

Designing RESTful APIs

Cloud-native Architecture

Microservices

Education

Bachelor’s degree or equivalent experience

Tools

.NET Core

AWS

Docker

Job description

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 / in strictest confidence – or simply apply via the link.