Senior Java Engineer - Fraud Risk & Real-Time APIs

OKX Group; Singapore; On-site; SGD 90,000 - 150,000; Full time

Benefits offered by this job

Wellness and meal allowances

Comprehensive healthcare schemes

Job summary

OKX Group is seeking a Java Engineer to join the Fraud Risk team in Singapore. The role focuses on backend microservices, RESTful APIs, and real-time fraud monitoring across distributed systems.

You will work with frontend and data science teams to deliver scalable, secure solutions in a fast-paced fintech environment. The ideal candidate has 5+ years of software development experience, strong Java/JVM skills, and familiarity with Spring Boot, Kafka, Redis, and CI/CD practices.

Qualifications

• Minimum 5+ years of software development experience.
• Strong Java, JVM tuning, and multi-threading knowledge.
• Experience with REST APIs, Spring Boot, Hibernate, and Maven.
• Experience with databases like MySQL/Oracle and SQL optimization.
• Familiarity with Kafka, ELK, Redis; distributed systems principles.
• Excellent communication and cross-team collaboration; Mandarin and English preferred.

Responsibilities

• Develop and maintain high-scale backend microservices.
• Design RESTful APIs and messaging for real-time fraud monitoring.
• Lead tests, CI/CD, and code quality improvements.
• Collaborate with frontend, data science, and risk teams.
• Drive tech decisions and performance, security, reliability.

Skills

Java

JVM tuning

Distributed systems

REST APIs

Unit testing

CI/CD

Communication

Bilingual (Mandarin & English)

Tools

Spring Boot

Hibernate

MySQL

Oracle

Kafka

Redis

Git

Maven

AWS

Alicloud

Job description

OKX Group is seeking a Java Engineer to join the Fraud Risk team in Singapore. The role focuses on backend microservices, RESTful APIs, and real-time fraud monitoring across distributed systems.

You will work with frontend and data science teams to deliver scalable, secure solutions in a fast-paced fintech environment. The ideal candidate has 5+ years of software development experience, strong Java/JVM skills, and familiarity with Spring Boot, Kafka, Redis, and CI/CD practices.