Java Software Engineer - Real-time Payments

Senior Java Software Engineer Real-Time Payments Engineering Fintech

Were looking for an experienced Java Software Engineer to join a global Fintech based in South West London. The company develops high-performance technology solutions for leading financial institutions, helping them strengthen and modernise their payments capabilities.

About the role

Youll join the core engineering team responsible for building and enhancing a real-time payments processing platform. The work involves designing and developing distributed systems that are highly scalable, resilient, and able to handle large transaction volumes.

The environment is highly agile, with a strong focus on pair programming, TDD and BDD, and youll have the chance to influence technical decisions and shape how new features are delivered.

Tech environment

• Java 17, Spring, Spring Boot
• Reactive programming with Akka
• Microservices architecture
• Kafka, JMS, RabbitMQ, ActiveMQ
• Docker / Kubernetes, AWS, MongoDB

What were looking for

• Solid hands-on experience with Java 11+ (ideally Java 21)
• Good understanding of Reactive Programming concepts with Akka, WebFlux, RxJava etc.
• Experience working with microservices and distributed systems
• Background with Kafka and JMS related messaging tools
• Knowledge of multithreading, concurrency, and performance tuning
• Familiarity with AWS and MongoDB
• Previous experience in financial services, ideally within payments

Why join

• Work on systems used by major global banks
• Be part of a highly collaborative, engineering-driven culture
• Focus on real-time, high-throughput systems and modern Java technologies
• Hybrid working model 2 days per week in the South London office

If youre passionate about engineering high-quality, real-time systems and want to work with talented engineers in a growing Fintech, wed love to hear from you.

Sponsorship: Not available