Principal Security Engineer, Circle

• This role requires deep Web3 threat expertise, a customer-first mindset, and a strong ability to automate and scale intelligence workflows
• 7+ years of experience in cyber threat intelligence, with a focus on blockchain/Web3 threats
• Proven ability to analyze smart contract exploits, protocol vulnerabilities, and related attack techniques
• Strong intel-sharing relationships within the crypto threat intelligence community
• Deep understanding of threat actors, tactics, and the evolving cyber threat landscape
• Excellent communication skills, including written reports and executive-level briefings
• Ability to operate independently and manage competing priorities in a high-velocity environment

Desirable

• As a Principal Security Engineer, you’ll lead the blockchain component of Circle’s Threat Intelligence Program—delivering actionable, refined intelligence to support critical decision-making across the business
• You’ll partner with teams across the organization to improve detection capabilities, respond to blockchain-focused incidents, and contribute to the broader maturity of Circle’s intelligence operations
• As the sole analyst covering the US timezone, you'll play a vital role in supporting global coverage, including occasional on-call responsibilities to support security operations
• Build and manage the blockchain arm of Circle’s Threat Intelligence Program
• Collaborate with product and security teams to threat model new Web3 products and enhance detections
• Monitor, triage, and assess incoming intelligence feeds and alerts
• Process Requests for Intelligence (RFIs) and provide timely, actionable insights
• Produce clear and impactful threat intelligence reports, briefings, and automated outputs
• Develop AI-driven workflows using SOAR and TIP platforms to streamline intelligence operations
• Build and maintain trusted relationships with internal stakeholders and external partners
• Contribute to the long-term strategy and maturity of Circle’s Threat Intelligence Program
• Support proactive threat hunting efforts within blockchain ecosystems