Java Engineer – High-Throughput FinTech Data Systems

Referment; Greater London; On-site; GBP 70,000 - 110,000; Full time

Job summary

Referment is seeking a Java engineer to join a London-based engineering team building high-throughput, data-driven services. You’ll work on Java 17+ microservices and streaming components that process financial data at scale, collaborating in a distributed agile setup with product and fellow engineers in short cycles.

The role suits mid-level developers seeking ownership or senior engineers looking for broader responsibility.

Qualifications

• Strong Java expertise with focus on performance for high-throughput systems.
• Experience with automated testing and CI/CD pipelines.
• Ability to explain technical concepts clearly to non-developers and peers.

Responsibilities

• Design and ship high-throughput, low-latency Java 17+ microservices and streaming components.
• Collaborate in a distributed agile team, participate in short deployment cycles.

Skills

Core Java

Performance- critical systems

Test-driven development

Distributed agile

CI/CD

Communication

Tools

JUnit 5

Mockito

Spring Integration

Kubernetes

Docker

Kafka

ArgoCD

PostgreSQL

GitHub

Job description

Referment is seeking a Java engineer to join a London-based engineering team building high-throughput, data-driven services. You’ll work on Java 17+ microservices and streaming components that process financial data at scale, collaborating in a distributed agile setup with product and fellow engineers in short cycles.

The role suits mid-level developers seeking ownership or senior engineers looking for broader responsibility.