Senior Java Engineer - Fraud Risk & Real-Time Systems

Neobankbeat; Singapore; On-site; SGD 180,000 - 240,000; Full time

Benefits offered by this job

Competitive compensation

Wellness allowances

Healthcare coverage

Team events

Job summary

OKX Singapore Fraud Risk team is seeking a Senior/Staff Java Engineer to help build and maintain backend microservices and real-time fraud monitoring. You will design scalable APIs, work with data streams, and support cross-functional teams, contributing to the risk ecosystem across locations.

The role requires strong Java, JVM tuning, Spring Boot, and experience with distributed systems, databases, and messaging queues. Collaboration across regions and a delivery-focused mindset are essential.

Qualifications

• Min. 5+ years of experience in software development.
• Strong Java background with JVM tuning and performance optimisation.
• Experience with SpringBoot, REST APIs and distributed systems.
• Familiarity with MySQL/NoSQL databases, caching and messaging systems.
• Ability to work across time zones and collaborate with cross-functional teams.

Responsibilities

• Develop and maintain 24/7 high-scale APIs and microservices.
• Monitor, own and improve production services in live environments.
• Write unit and integration tests; contribute to CI/CD pipelines.
• Lead technical discussions; evaluate new technologies and tools.
• Collaborate with Frontend, QA, and other teams to deliver complex features.

Skills

Java Stack

JVM Tuning

Spring Framework

REST APIs

Distributed Systems

SQL Databases

Kafka

Redis

Tools

MySQL

Kafka

Redis

Spring Boot

Job description

OKX Singapore Fraud Risk team is seeking a Senior/Staff Java Engineer to help build and maintain backend microservices and real-time fraud monitoring. You will design scalable APIs, work with data streams, and support cross-functional teams, contributing to the risk ecosystem across locations.

The role requires strong Java, JVM tuning, Spring Boot, and experience with distributed systems, databases, and messaging queues. Collaboration across regions and a delivery-focused mindset are essential.