OKX - Senior/Staff Engineer, Fraud Risk

• Proficiency with Java stack and JVM (memory/performance tuning, GC) • Proficiency with developing Web Services, SOA, REST APIs, Message Queue, Distributed/Scalable Architecture • Proficiency in Spring Framework (Spring Boot), Hibernate (or similar ORM), Maven, Git • Design and develop 24/7 high scale APIs and distributed system, the tech stack will be on Alicloud/AWS • Strong CS fundamentals, solid knowledge of OOP/OOD, GoF design patterns • Write unit tests, integration tests and CI/CD scripts • Own, monitor and improve our services in production • Development and testing of high quality product features spanning multiple product domains • Work with engineering managers, architects, engineers & QA to develop innovative solutions that meet market needs w.r.t functionality, performance, reliability, realistic implementation schedules and adherence to development goals and principles • Be a technical leader; research and promote new technologies and tools • Face technical challenges - performance, fault-tolerance, security and live production issues • Be involved throughout our service life cycle, influence every step of the way • What We Look For In You • Min. 5+ years of experience in Software Development • Possess a solid foundation in Java, with a deep understanding of JVM configuration optimisation strategies and tuning, IO, multi-threading, concurrency frameworks, common data structures, algorithms, and design patterns • Good programming specifications and rich work experience • Familiar with mainstream open-source application frameworks, such as SpringBoot, SpringMVC, Mybatis, SpringCloud, etc. • Experience with MySQL, Oracle, and other databases, with an in-depth understanding of things, locks, indexes, database and SQL optimisation, design methods such as sub-database sub-table, leader/follower synchronization • Familiar with common middleware, such as Kakfa, ELK, Hologres, etc. • Possess a deep understanding of the design principles of common caching systems, such as Memcached, Redis, etc. and be able to accurately choose caching solutions • Have a good understanding of distributed system principles, including CAP, consistency, idempotent operation, etc. • Work well in a team environment and be able to effectively drive cross-team solutions that have complex dependencies and requirements • Results-oriented, self-learner, problem solver with 'can do' attitude • Clear logic, quick thinking and good communication skills • Bilingual is highly preferred (Mandarin and English) as the team will be working with stakeholders in different regions • Nice-To-Have • Nice-To-Have • Already or are eager to become an expert in the blockchain and cryptocurrency landscape and will understand how speculators, traders, digital asset exchanges, blockchain money services businesses and financial institutions operate • Experience working in a disruptive technology, successfully launching products, ideally, within FinTech, eCommerce, SaaS, AdTech, or Digital Wallet business experience • A history (and preference) of being both strategic, analytical and execution-oriented • Familiarity with product management processes and tools • Experience working with teams across different time zones