Lead Security Engineer, Cloud Security

Circle•Los Angeles, CA

22h•Remote

About The Position

Circle (NYSE: CRCL) is one of the world’s leading internet financial platform companies, building the foundation of a more open, global economy through digital assets, payment applications, and programmable blockchain infrastructure. Circle’s platform includes the world’s largest regulated stablecoin network anchored by USDC, Circle Payments Network for global money movement, and Arc, an enterprise-grade blockchain designed to become the Economic OS for the internet. Enterprises, financial institutions, and developers use Circle to power trusted, internet-scale financial innovation. Learn more at circle.com. What you’ll be part of: Circle is committed to visibility and stability in everything we do. As we grow as an organization, we're expanding into some of the world's strongest jurisdictions. Speed and efficiency are motivators for our success and our employees live by our company values: High Integrity, Future Forward, Multistakeholder, Mindful, and Driven by Excellence. We have built a flexible work environment where new ideas are encouraged and everyone is a stakeholder. What you’ll be responsible for As a Lead Cloud Security Engineer at Circle, you’ll play a pivotal role in safeguarding our cloud infrastructure and applications. You’ll drive efforts to embed security into every layer of our technology stack—from code to cloud—ensuring that we can scale securely as our products grow. This role is both strategic and hands-on: you’ll lead projects, influence engineering teams, and dive deep into technical challenges, all while staying ahead of evolving threats in a dynamic fintech landscape.

Requirements

7+ years of experience in security engineering, with a focus on cloud and application security
Proven track record leading security projects and influencing security decisions in complex technical environments
Hands-on experience with cloud security platforms (e.g., Wiz, Orca, Prisma Cloud) and public cloud infrastructure (AWS, GCP)
Strong understanding of SAST, DAST, IaC scanning, and secure software development lifecycle practices
Familiarity with container and orchestration security (e.g., Kubernetes, Docker)
Experience designing and implementing detection logic, security controls, and automated guardrails
Proficiency in at least one scripting or programming language (e.g., Python, Go, JavaScript)
Ability to work cross-functionally, lead initiatives, and prioritize effectively in a fast-paced environment

Nice To Haves

Experience in the fintech, crypto, or blockchain space
Familiarity with cryptographic fundamentals and blockchain-specific threat models
Experience with tools and languages such as Terraform, Rust, Solidity, or Move
Relevant certifications (e.g., CCSP, OSCP, CISSP, CEH)
Bachelor's degree in Computer Science, Engineering, Cybersecurity, or equivalent experience

Responsibilities

Leading cloud and application security initiatives in collaboration with engineering, product, and infrastructure teams
Integrating security controls and testing into CI/CD pipelines to ensure early detection and prevention of vulnerabilities
Designing and implementing secure authentication, authorization, logging, and monitoring mechanisms
Conducting and coordinating threat modeling, code reviews, and architecture assessments for new and existing systems
Managing vulnerability discovery and remediation workflows using tools like Wiz or equivalent cloud-native platforms
Partnering with third-party vendors to perform penetration tests and security assessments
Investigating escalated security events, triaging incidents, and identifying root causes
Researching emerging threats, particularly in blockchain and cloud-native environments, and adapting practices accordingly
Contributing to security awareness and training initiatives to uplift secure development practices across engineering

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