Senior/Staff Java Engineer, Fraud Risk

About the role

OKX, a crypto exchange and developer of OKX Wallet, is looking for a Java Engineer to join its Fraud Risk team. The role has early and significant impact on the engineering team, covering implementation and support of backend microservices, close collaboration with frontend and cross-functional teams, research and feedback on team decisions.

Key responsibilities

• Design and develop 24/7 high-scale APIs and distributed systems on the Alibaba Cloud/AWS stack
• Build unit tests, integration tests and CI/CD scripts, and own and improve services in production
• Develop and test product features across several domains, working with engineering managers, architects, engineers and QA
• Act as a technical leader: research and promote new technologies, and tackle performance, fault tolerance, security and live production issues
• Take part in the full service lifecycle and influence every step

Required profile

• Minimum 5 years of software development experience
• Solid CS fundamentals, OOP/OOD and GoF design patterns
• Team player who can drive complex, cross-team solutions
• Bilingual Mandarin and English highly preferred, as stakeholders are in different regions
• Nice to have: blockchain and cryptocurrency expertise, FinTech/eCommerce/Digital Wallet product launch experience, familiarity with product management processes, and experience with teams across time zones

Required skills

• Java, JVM tuning, IO, multi-threading, concurrency, data structures and algorithms
• Web services, SOA, REST APIs, message queues, distributed architecture
• Spring Boot, Hibernate (or similar ORM), Maven, Git
• MySQL, Oracle and SQL optimisation, database design patterns
• Kafka, ELK, Hologres, Redis, Memcached and caching principles
• Distributed system concepts such as CAP, consistency and idempotency

What we offer

• Competitive total compensation package
• Team building programs and company events
• Wellness and meal allowances
• Healthcare schemes for employees and dependants