Fynity
Payments Engineer - Java
How your CV stacks up
Upload your CV to see how well it fits this job role
?%
Payments Engineer - Java
London – Hybrid (1 day per week onsite)
Are you a senior/lead hands-on Engineer who thrives in Banking, Financial Services or Payments environments? Do you enjoy building low-latency, high-throughput distributed systems where correctness, resilience, and performance really matter?
This is an opportunity to work at the core of real-time payments infrastructure, helping to power instant transactions for some of the world's largest banks. We’re hiring on behalf of a leading payments consultancy delivering mission-critical, event-driven platforms that integrate deeply with bank infrastructure to enable secure, real-time payments at global scale.
What You’ll Be Doing
- You’ll play a senior individual-contributor role within a high-performing engineering team, building asynchronous, message-driven systems designed for scale, resilience, and near-zero downtime.
- Design and implement high-throughput, low-latency systems processing millions of real-time payment events.
- Build event-driven architectures using modern Java and reactive frameworks.
- Work extensively with non-blocking I/O, asynchronous flows, back-pressure, and concurrency.
- Contribute to system and API design, focusing on scalability, fault tolerance, and observability.
- Collaborate closely with architects, engineers, and client teams across Europe.
- Operate in Agile environments (Scrum / Kanban) with a strong engineering culture.
Reasons to use Rodeo
Start with a chat, not a search bar
Grad scheme, placement, apprenticeship? Not sure what you want yet — that's fine. Your agent talks it through with you and turns "I have no idea" into a shortlist.
It searches the market for you
Every day your agent scans the market matching roles against what actually matters to you, not just keywords on a CV.
Only hits
No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.
Tech Stack (current & evolving)
- Java 17+, Spring WebFlux, Akka, MongoDB, Kafka, reactive streams, distributed messaging, cloud-native tooling.
What You Bring
- We’re looking for engineers who enjoy thinking in events, streams, and asynchronous workflows, and who take pride in building systems that perform under pressure.
- Strong hands-on experience with Java 11+ (ideally Java 17) in production environments.
- Deep understanding of asynchronous and reactive programming models.
- Proven experience with event-driven architectures and real-time messaging (Kafka, JMS, Akka, etc.).
- Solid grasp of distributed systems concepts: concurrency, idempotency, fault tolerance, and resilience.
- Experience building and testing production-grade systems using TDD/BDD and CI/CD pipelines.
- Comfortable working on complex, long-lived systems where performance and reliability are critical.
- NoSQL experience, ideally MongoDB.
Get help with your application
Your very own career expert that helps elevate your application to the next level.
Bonus (not essential)
- Experience in banking, payments, or financial systems, or if you’ve built real-time platforms at scale.
What’s In It for You
- £90,000 – £115,000 base salary (DOE)
- 20% annual bonus
- Work on event-driven, real-time systems with global impact.
- Hybrid working – 1 day a week onsite (more if you prefer)
- Exposure to major international banks and payment networks.
- A product-led, engineering-first environment where technical decisions matter.
“It took my CV and asked me questions relevant to understanding what kind of jobs to suggest for me. Suggestions were almost perfect. Jobs were exactly what I’ve been looking for.”
Jessica, London
Skills
Location