Okx27d ago

Senior/Staff Engineer, Fraud Risk

Hong Kong · Hong Kong Sarsenior

OtherSenior/ Engineer Fraud Risk

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Quick Summary

Overview

Who We Are 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,

Technical Tools

OtherSenior/ Engineer Fraud Risk

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 Role

~1 min read

We’re looking for a Software 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

Responsibilities

~1 min read

→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
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Development and testing of high quality product features spanning multiple product domains
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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
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Be a technical leader; research and promote new technologies and tools
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Face technical challenges - performance, fault-tolerance, security and live production issues
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Be involved throughout our service life cycle, influence every step of the way

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

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

What We Offer

~1 min read

✓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!Please note that Hong Kong is a group-level service hub, and OKX does not carry on a business of operating a virtual asset trading platform in Hong Kong.

Listing Details

Posted: March 25, 2026
First seen: March 26, 2026
Last seen: April 21, 2026

Posting Health

Days active: 26
Repost count: 0
Trust Level: 31%
Scored at: April 21, 2026

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Okx

greenhouse

OKX is a global cryptocurrency exchange and Web3 technology company, offering trading, wallet services, and access to decentralized finance. Founded in 2017, it serves millions of users in over 100 countries.

Employees

5k+

Founded

2017

Domain

Jobs

External application · ~5 min on Okx's site

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