Java Software Engineer
Job in
Greater London, London, Greater London, W1B, England, UK
Listed on 2026-01-22
Listing for:
Oliver Bernard
Full Time
position Listed on 2026-01-22
Job specializations:
-
Software Development
Java Developer, Cloud Engineer - Software, Software Engineer, Backend Developer
Job Description & How to Apply Below
A leading payments technology company is growing its engineering team and is looking for Java Engineers with strong reactive and event-driven programming experience to help build real-time, high-volume payment platforms.
Your work will power millions of transactions per day, supporting mission-critical financial services used globally.
What You’ll Be Doing- Building reactive, non-blocking Java services for real-time payment processing
- Designing event-driven microservices and APIs
- Working with messaging platforms and streaming pipelines
- Improving throughput, resilience, and observability of core systems
- Collaborating with product, platform, and SRE teams
- Strong commercial experience with Java
- Hands-on experience with Reactive Programming (Web Flux, Reactor, RxJava, Akka, Vert.x, etc.)
- Experience building high-throughput, distributed systems
- Solid knowledge of microservices and REST APIs
- Cloud and container experience (Kubernetes/Docker preferred)
- Experience with Kafka, Pulsar, Rabbit
MQ, or event streaming platforms - Exposure to payments, fintech, or financial services platforms
- Familiarity with observability tools and SRE practices
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