Risk Operations Specialist; Account Security & Fraud

Risk Operations Specialist (Account Security & Fraud) – One Bull Ex

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One Bull Ex  is a crypto futures exchange built for speed, reliability, and innovation. Our platform is supported by robust risk, security, and monitoring systems that enable safe and efficient trading across highly volatile cryptocurrency and global financial markets. We are committed to maintaining a secure, trusted environment for global traders while delivering a seamless user experience.

As a Risk Operations Specialist (Account Security & Fraud), you will act as the human decision-maker behind our automated security and risk systems. Your primary focus will be Account Takeover (ATO) prevention and transaction risk assessment, ensuring a strong balance between rigorous security controls and an excellent user experience.

You will investigate suspicious activities, manually review high-risk transactions, and communicate directly with users to verify identity and intent. Through timely, accurate decision-making, you will help ensure One Bull Ex  remains a secure and trusted platform for traders worldwide.

• 24/7 Account Security & ATO Response:
  Serve as the first line of defense against Account Takeover (ATO) attempts by reviewing real-time alerts related to suspicious login behavior, unfamiliar devices, password resets, and abnormal account setting changes. Make swift and accurate decisions to freeze, restrict, or secure accounts showing signs of compromise in order to prevent asset loss.
• Transaction Risk Assessment (Manual Review):
  Conduct in-depth manual reviews of high-risk or critical asset movements flagged by the risk engine. Analyze transaction timing, velocity, behavioral context, and destination address risk to determine whether transfers should proceed. Detect indicators of identity theft, unauthorized access, money laundering, or coordinated fraud activity, ensuring only legitimate transactions are approved.
• User Verification & Communication:
  Contact users via support tickets or email when accounts or transactions are flagged. Verify user identity and confirm intent behind suspicious actions. Clearly and empathetically explain security measures to users, de-escalating sensitive or high-pressure situations while maintaining strict compliance and security standards.

• English Proficiency (Required):
  Native or professional proficiency in English. Clear, professional, and grammatically accurate written and verbal communication is required when handling sensitive financial and security matters.
• Schedule Flexibility (Critical):
  Willingness to work rotating shifts, including evenings, weekends, and holidays, to support 24/7 crypto operations.
• Relevant
  
  Experience:
  
  1–3 years of experience in Risk Operations, Fraud Prevention, Trust & Safety, or a related role within a crypto exchange, fintech company, or financial institution.
• ATO Expertise:
  Strong understanding of Account Takeover techniques such as credential stuffing, phishing, session hijacking, and SIM swapping, and the ability to detect and mitigate them.
• Investigative Mindset:
  Strong analytical and critical-thinking skills, with the ability to identify inconsistencies, behavioral anomalies, and fraud indicators that automated systems may miss.

• Fluency in a second language (e.g., Chinese);
  English remains the primary working language.
• Experience with blockchain analytics or transaction monitoring tools such as Chainalysis, TRM Labs, or Arkham.
• Understanding of crypto derivatives, futures trading, or advanced trading products.

If you are passionate about account security, fraud prevention, and protecting users in a fast-paced crypto environment, we would love to hear from you. All applications and enquiries will be handled confidentially. Shortlisted candidates will be contacted to discuss the next steps in the hiring process.

• Entry level

• Full-time

• Management and Manufacturing

• Blockchain Services