Senior Java Backend Engineer — Kafka & Microservices

EPAM Systems; Hong Kong; On-site; HKD 700,000 - 1,100,000; Full time

Job summary

EPAM Systems Hong Kong is seeking a Senior Java Backend Engineer to design, build and run event-driven services supporting structured-products negotiation and trading connectivity. You will develop stateless Java microservices, harden streaming reliability and observability, and deliver through GitLab CI/CD and Kubernetes.

You will collaborate globally with product, platform, and support teams to ensure robust, scalable, and secure services across environments.

Qualifications

• Strong hands-on experience with Java and Spring Boot including dependency injection, configuration and Spring Security.
• Deep knowledge of Apache Kafka including Kafka Streams and tooling such as Confluent Schema Registry and Avro.
• Experience with reactive programming using Spring WebFlux and Project Reactor.
• Solid testing mindset using JUnit 5, Mockito and integration testing patterns for event-driven services.
• Experience delivering to Kubernetes with GitLab CI/CD pipelines.
• Designing stateless microservices with clear API and event contracts.
• Clear communication in regulated environments and cross-region teams.

Responsibilities

• Design, build and test stateless Java microservices and shared libraries for Kafka-based messaging.
• Implement routing, transformation and enrichment of messages between internal systems and external partners.
• Strengthen reliability through robust error handling, schema compatibility and deterministic processing.
• Build production-ready observability using metrics, logs and tracing to support fast incident triage.
• Deliver services across environments via GitLab CI/CD and Kubernetes, supporting releases and operations.
• Write high-quality unit and integration tests, participate in code reviews and raise engineering standards.
• Integrate external trading platforms and venues with internal reference data, product and instrument services.
• Support FIX connectivity where required for venue and platform integration.

Skills

Java

Spring Boot

Apache Kafka

Kubernetes

GitLab CI/CD

Reactive programming

JUnit 5

Mockito

Tools

Confluent Schema Registry

Apache Avro

Spring WebFlux

Project Reactor

Kafka tooling

Job description

EPAM Systems Hong Kong is seeking a Senior Java Backend Engineer to design, build and run event-driven services supporting structured-products negotiation and trading connectivity. You will develop stateless Java microservices, harden streaming reliability and observability, and deliver through GitLab CI/CD and Kubernetes.

You will collaborate globally with product, platform, and support teams to ensure robust, scalable, and secure services across environments.