Senior Software Engineer, 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.

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.

We’re looking for Software Engineers to join our Risk team! This role will provide an early and significant impact on the engineering team in the US. You will be expected to be responsible for such areas as implementation and support of backend microservices, working closely with the front end 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
• Machine learning models as micro services
• Event data stream ingestion which support 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

Design and develop 24/7 high scale APIs and distributed system, the tech stack will be on AWS. Java would be the language for the existing code base. Java Spring Boot will be the framework.

Strong CS fundamentals, solid knowledge of OOP/OOD, GoF design patterns.

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.

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 implementations 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 services life cycle, influence every step of the way.

Be part of an amazing fast‑paced team.

• At least 5+ years of experience in Software Development
• Experienced Java developer, other language experience (C++, Python, Go, Rust) can be a plus
• Familiar with different databases, such as Postgre
  
  SQL and DynamoDB
• Experienced in distributed systems and microservices
• Work well in a team environment and be able to…