Java Principle & Senior Software Engineer

🚀 Java Principal & Senior Software Engineers – Global Fintech (Remote / UK-Based)

We are working with an established global fintech, renowned for delivering world-class payments-related software and technology, to help them grow their UK engineering team. They're on a mission to power the next generation of merchant-first capabilities, and are looking for both Principal and Senior Software Engineers to join them on that journey.

This is a fantastic opportunity to work with a high-performing, autonomous team at the heart of a global payments ecosystem. You will solve real-world challenges at scale, with a strong emphasis on quality, modern engineering practices, and building software that delivers real value.

Why Join?

🔧Engineering-led environment

Our client believes in empowering small, focused teams to make big decisions — and big impact. Engineers are trusted to own outcomes and deliver with autonomy, without unnecessary red tape.

🌱Room to grow

Whether you’re looking to refine your craft, explore new technologies, or step into a more strategic role, you’ll find the support, mentoring, and flexibility to shape your career here.

🌍Real-world purpose

Everything built here is designed to solve actual problems for merchants around the world, not vanity projects or endless rewrites.

The Opportunity

As a Principal or Senior Software Engineer, you will:

• Design and develop backend services, APIs, and platform features within a modern, cloud-based payments architecture.
• Lead or contribute to projects from inception through deployment, including architecture, testing, and release.
• Build observable, testable systems using best practices such as BDD, CI/CD, and continuous improvement.
• Collaborate with product and engineering teams to ship secure, scalable, and maintainable solutions.

What We're Looking For

We are seeking engineers with:

• 6+ years of professional experience (Senior) or 8–10+ years (Principal) in software engineering roles.
• Strong OO programming skills in one or more languages such as Java, C#, Go, or Ruby.
• Proven experience building server-side applications and integrating with modern APIs and databases.
• Solid understanding of web technologies, SQL, systems integration, caching, and messaging frameworks.
• A self-motivated, collaborative mindset and a desire to mentor and lead (particularly at Principal level).
• The ability to thrive in an agile, outcome-driven environment with varied project scopes.

Why This Role?

• Join a stable, well-funded fintech with global reach and real engineering ambition.
• Be part of a remote-first, UK-based team working on meaningful challenges.
• Influence technology choices and delivery approaches from the ground up.
• Enjoy a culture that blends technical curiosity, pragmatism, and delivery focus.

Interested?

If you're a Senior or Principal Software Engineer ready to take the next step, we would love to tell you more about the long-term vision of this exceptional global fintech client.