Principal Security Engineer

6 days ago


London, Greater London, United Kingdom Circle Full time
About Circle

Circle is a pioneering financial technology company at the forefront of the emerging internet of money, where value can flow freely and securely across borders. Our innovative infrastructure, including the blockchain-based USDC, empowers businesses, institutions, and developers to harness the potential of this new internet layer and capitalize on the major turning point in the evolution of money and technology.

Job Summary

We are seeking a highly skilled Principal Security Engineer with expertise in Product and Blockchain Security to drive and implement technical strategies, innovative tooling, research, and processes. This role will work closely with product management and software engineering teams to ensure applications are designed and implemented securely.

Key Responsibilities
  • Collaborate with cross-functional teams to design and implement secure applications and systems.
  • Test web3 and web2 applications and underlying systems for vulnerabilities using both tools and manual techniques.
  • Automate security tests within the CI/CD pipeline.
  • Develop and maintain secure coding standards and training materials.
  • Research vulnerabilities specific to blockchain technologies and incorporate this knowledge into Circle's security practices.
  • Serve as an escalation point to investigate security alerts and identify incidents.
  • Manage vendors to conduct penetration tests and other security-related projects.
  • Influence the continuous improvement of the application security program.
Requirements
  • 7+ years of total experience in a cyber security role.
  • 4+ years of experience as a security engineer leading and driving projects and developing resolutions in cybersecurity.
  • Enthusiasm for securing and breaking software.
  • Experience designing software security features, including access control, logging, and monitoring.
  • Experience automating security tests in CI/CD pipelines.
  • Working knowledge of public and private key cryptography.
  • Demonstrated familiarity with techniques for making software robust against common attacks.
  • Self-motivated and creative problem-solver able to work independently with minimal guidance.
What We Offer

Circle is an equal opportunity employer and values diversity. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. Circle participates in the E-Verify Program in certain locations, as required by law.



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