Senior Java Developer

Senior Software Engineer - Real-Time Systems | £95k - £115k + 20% Bonus

Location: London (Hybrid, 1-2 days per week)

Are you a highly experienced Software Engineer looking to take on a senior hands-on role while mentoring the next generation of top talent? Do you want to work on high-performance, real-time systems that process millions of transactions in milliseconds? This is your opportunity to join a leading payments technology consultancy, working with some of the world's largest financial institutions to redefine the future of real-time payments.

The Role
As a Senior Software Engineer, you'll be at the forefront of building asynchronous, event-driven systems using Java 17+, Spring WebFlux, AKKA, Kafka, and more. You'll be working fully hands-on in a high-volume, low-latency environment, contributing to architecture and design, while also mentoring and guiding other engineers to raise the technical bar across the team.

1. Design and develop high-performance, scalable applications for real-time payments.
2. Lead technical discussions and drive best practices in TDD & BDD methodologies.
3. Optimise applications for high availability, resilience, and scalability.
4. Mentor and support mid-level and junior engineers, fostering a collaborative engineering culture.
5. Work in a highly agile Kanban/Scrum environment, contributing to continuous improvement.

What We're Looking For:

1. Expert-level experience in Java 11+ (ideally Java 17) and Reactive Programming (Spring WebFlux, AKKA).
2. Strong knowledge of asynchronous request handling and distributed systems.
3. Proven experience with event-driven architectures and real-time messaging (Kafka, JMS).
4. A strong advocate for Agile methodologies (TDD, BDD) and CI/CD best practices.
5. Mentorship experience, helping to upskill and guide engineers within the team.
6. Experience building high-performance, mission-critical systems (Payments, Banking, or any real-time transactional systems).
7. Excellent soft skills, you'll be working in a collaborative team with stakeholders from across the business.

Not from a Banking/Payments background? If you've worked on complex real-time systems in other industries, we still want to hear from you!

What's in It for You?

1. £95k - £115k salary (depending on experience)
2. 20% bonus (based on both company and personal performance)
3. Work with cutting-edge technology in a high-impact role
4. Shape the future of payments at a global scale
5. Flexible hybrid working (London office, 1-2 days per week)

Ready to take a senior role in a High-Performance Engineering Team?
If you're a senior engineer who wants to stay hands-on while mentoring others, this is your chance to work on mission-critical financial systems and drive real innovation. Apply now and be part of the next evolution in real-time payments technology!

If you are interested please apply ASAP. The People Network is an employment agency and will respond to all applicants within three - five working days. If you do not hear within these timescales please feel free to get in touch.