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Senior/Staff Java Engineer, Fraud Risk at OKX, Singapore

Senior/Staff Java Engineer, Fraud Risk at OKX in Singapore. Apply with swipeandhired.

At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom.

OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves.

Across our multiple offices globally, we are united by our core principles: We Before Me, Do the Right Thing, and Get Things Done. These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er.

OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more.

About The Opportunity

We’re looking for a Java Engineer to join our Fraud Risk team!

This role will provide an early and significant impact on the engineering team. You will be expected to be responsible for such areas as implementation and support of backend microservices, working closely with the frontend and cross-functional teams to coordinate complex deliverables, do research and provide meaningful feedback about any decision being made within the team. Following are some domains you will have opportunities to work with:

Real-time fraudulent monitoring with highly configurable rules

Event data stream ingestion which supports near real-time fraud rules setup

Advanced A/B testing capabilities for our customers so they can leverage greedy algorithms and fight fraud

Powerful tools and innovative data science driven solutions for business user

Full feature risk ecosystem

What You’ll Be Doing

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

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

Perks & Benefits

Competitive total compensation package

Various team building programs and company events

Wellness and meal allowances

Comprehensive healthcare schemes for employees and dependants

More that we love to tell you along the process!

Notice:

All official OKX vacancies are published on this website. While roles may appear on selected third-party platforms from time to time, information on other sites may be inaccurate or outdated. If in doubt, please apply directly through our official careers website.

Information collected and processed as part of the recruitment process of any job application you choose to submit is subject to OKX 's Candidate Privacy Notice .