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Senior Java Engineer – Platform
Job in
East Orange, Essex County, New Jersey, 07017, USA
Listed on 2026-07-06
Listing for:
RE Partners
Full Time
position Listed on 2026-07-06
Job specializations:
-
Software Development
Java Developer, Backend Developer
Job Description & How to Apply Below
Overview
We're building a high-impact payments platform for a top-tier investment bank – real-time, high-volume transactions, sub-10ms latency, and millions of operations per second. This isn't a CRUD role. This is core Java engineering, building and optimising systems at the heart of global payments infrastructure. You'll join a small, senior team with ownership – you’ll own services end-to-end, from design to production support.
Your work will power real-time payments across the globe.
- Design, build, and optimise high-throughput, low-latency distributed systems using Java 21+, Spring Boot, Kafka, and Kubernetes
- Work with event-driven architectures and asynchronous messaging
- Tune JVM performance, debug production issues, and optimise for reliability
- Own the full lifecycle: requirements, design, implementation, testing, and production support
- Collaborate with engineers, architects, and business stakeholders in an Agile environment
- 8+ years of hands-on Java development experience
- Expert knowledge of Java 17/21, Spring Boot, and modern JVM features
- Deep understanding of concurrency, multithreading, and performance tuning
- Experience with Kafka (or similar messaging systems) and event-driven architecture
- Strong grasp of distributed systems – fault tolerance, idempotency, resilience
- Production debugging skills – thread dumps, heap analysis, profiling tools
- UK or US work authorisation (we cannot sponsor visa)
- Experience in payments, trading, or financial services – especially low-latency systems
- Experience with reactive programming (Spring Web Flux, Akka)
- Familiarity with ISO 20022, SWIFT, or FIX standards
- Cloud-native experience (AWS, GCP, or Azure) with Kubernetes
- Meaningful work: your code will process billions in payments
- Modern tech stack:
Java 21, virtual threads, Kafka, Kubernetes - Senior team: collaborate with engineers from top banks and trading firms
- Stable, long-term: permanent role with a top-tier investment bank
- Hybrid flexibility: 2-3 days in the office, rest remote
Position Requirements
10+ Years
work experience
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