Sr Data Scientist, Risk Strategy

OKX; San Jose (CA); On-site; USD 223,661 - 268,333; Full time

Benefits offered by this job

L&D programs and education subsidy

Wellness and meal allowances

Comprehensive healthcare schemes

Job summary

OKX is seeking a Sr Data Scientist specializing in fraud analytics in San Jose, California. This role involves analyzing complex fraud patterns, developing machine learning models, and collaborating across teams to mitigate fraud risks.

The ideal candidate holds a Master’s or PhD in a quantitative field, with over 4 years of experience in fraud analytics and a strong background in machine learning techniques. Attractive compensation packages including comprehensive benefits are provided.

Qualifications

• Master’s degree or PhD in a quantitative discipline or equivalent experience.
• 4+ years of fraud analytics experience in financial services or FinTech.
• Deep understanding of machine learning algorithms like GBM, XGBoost.

Responsibilities

• Identify complex fraud patterns through data mining and analysis.
• Provide technical guidance for engineering projects incorporating new data.
• Collaborate to communicate findings to technical and non-technical stakeholders.

Skills

Fraud analytics experience

Machine learning techniques

Programming in SQL, R, Python

Project management skills

Education

Master’s degree or PhD in Statistics, Mathematics, or related field

Tools

Statistical software (SQL, R, Python)

Job description

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.

About the Opportunity:

The Sr Data Scientist, Risk will offer a strategic perspective, deep analytical and modeling capabilities, and a collaborative working style. The right candidate will have strong intellectual curiosity and passion for achieving business results.

An ability to quickly define the problem, research and leverage state-of-the‑art modeling techniques, and provide timely recommendations will be essential. Key skills will include a strong analytical mindset, deep understanding of most popular machine learning algorithms and lead key initiatives with integrity and a passion for investigations, problem solving, and troubleshooting.

What You'll Be Doing:

Identify complex fraud patterns and their technical root causes through detailed data mining and analysis, including identification of sophisticated fraud methods employed by actors who are deliberately trying to avoid detection.

Serve as technical SME by sharing new data mining techniques, maintaining technical reference documentation, and interfacing with partner technology teams.

Collaborate across business and technology stakeholders to communicate analytical findings to both technical and non‑technical audiences.

Provide technical guidance for engineering projects that incorporate new data points into the investigation team’s toolkit, such as API integrations or internal data transformations.

Link Analysis/Graph analytics to find and mitigate deeply-connected fraud networks and detect new accounts being added to these networks.

Unsupervised learning methods to augment existing supervised models, or detect portfolio anomalies.

Development of machine learning models.

Partner with product and engineering team in implementing features and models, and enhancing systems.

What We Look For In You:

Master’s degree (or PhD) in Statistics, Mathematics, Operations Research, Computer Science, Economics, Engineering or other quantitative discipline. Bachelor’s degree with significant relevant experience will be considered.

4+ years of fraud analytics experience in financial services or FinTechs.

Deep understanding of modern machine learning techniques / algorithms including GBM, XGBoost, LGBM, etc. Advanced programming skills of statistical / analytical software (SQL, R, Python,etc.);

Successful track record of owning and driving large, complex data analysis projects.

Demonstrated capacity for innovation and outside-the-box thinking in the creation of new capabilities and processes that are unstructured or exploratory in nature.

Experience in a fast-paced startup environment with a strong level of initiative; and

Ability and willingness to travel as needed.

Strong communicator in both writing and speaking.

Multi-tasking and strong project management skills.

Nice to Haves:

Hands‑on experience/knowledge of modeling in machine learning (GBM, XGBoost, Random Forest, etc.); and

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!

OKX Statement

The salary range for this position is $223,661.00 to $268,333.00. The salary offered depends on a variety of factors, including job-related knowledge, skills, experience, and market location. In addition to the salary, a performance bonus and long-term incentives may be provided as part of the compensation package, as well as a full range of medical, financial, and/or other benefits, dependent on the position offered. Applicants should apply via Okcoin and OKX internal or external careers site.

OKX is committed to equal employment opportunities regardless of race, color, genetic information, creed, religion, sex, sexual orientation, gender identity, lawful alien status, national origin, age, marital status, and non-job related physical or mental disability, or protected veteran status. Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.