Head Of Java Engineering

Principal Java Software Engineer
London (Hybrid – 1–2 days/week onsite)

&##128640; Join a FinTech Powering the Future of Payments
Are you an experienced Senior/Principal Java Software Engineer who thrives in a fast-paced, agile environment? Passionate about high-throughput, real-time systems? This is your opportunity to help shape the core technology that powers instant payments for some of the world’s largest financial institutions.

We’re hiring on behalf of a leading payments consultancy, delivering cutting-edge solutions that integrate seamlessly with bank infrastructure to enable real-time, secure transactions across the globe.

&##128269; What You’ll Be Doing
You’ll join a high-performing engineering team building asynchronous, event-driven systems using modern Java technologies.

Design and build scalable, high-availability systems processing millions of real-time transactions
Work with Java 17+, Spring WebFlux, AKKA, Kafka, and more
Write clean, testable code using TDD and BDD
Contribute to architectural decisions in a fast-evolving codebase
Collaborate within Agile teams (Kanban/Scrum)

&##129504; What You Bring
We’re looking for Engineers who are pragmatic, performance-focused, and thrive on solving complex distributed systems problems.

Strong hands-on experience with Java 11+ (ideally Java 17)
Solid knowledge of Reactive Programming (e.g., Spring WebFlux, AKKA)
Experience with event-driven architecture, real-time messaging systems (Kafka, JMS)
Familiarity with asynchronous request handling, scalability, and system resilience
Agile mindset, with TDD/BDD and CI/CD experience

Bonus: Background in Banking/Payments is helpful but not required – if you’ve built high-performance, real-time systems, we want to talk to you.

&##127873; What’s In It for You
&##128176; £95,000 – £110,000 base salary (DOE)
&##127919; 20% performance bonus
&##129504; Work with cutting-edge tech on globally impactful systems
&##127969; Hybrid working – 1–2 days/week in a London office
&##127757; Opportunity to collaborate with major global banks
&##128640; Fast-paced, product-led environment where your voice matters

If you\’re a motivated Senior/Principal Engineer ready to tackle complex challenges and deliver meaningful change, hit apply – and shape the future of payments with us.