Job Application for Staff/Senior Engineer

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OKX will be prioritising applicants who have a current right to work in Singapore, and do not require OKX's sponsorship of a visa.

Who We Are

At OKX, we believe that the future will be reshaped by Crypto, ultimately contributing to every individual's freedom. OKX began as a crypto exchange giving millions of people access to crypto trading and over time becoming among the largest platforms in the world. In recent years, we have developed one of the most connected Web3 wallets used by millions to access decentralized crypto applications (dApps). OKX is a trusted brand by hundreds of large institutions seeking access to crypto markets on a reliable platform that seamlessly connects with global banking and payments. In the last year, OKX has expanded into new markets including Australia, Brazil, Netherlands, Singapore and Turkey, with plans to launch in the US, Belgium and the UAE.

We are deeply committed to shaping a fairer, more transparent and accessible society through blockchain technology. This is why we publish proof of reserves monthly, and continue to ship new innovative security features.

About The Opportunity

We’re looking for Software Engineers 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-Haves

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
L&D programs and education subsidy for employees' growth and development
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!