Thrive Capital Portfolio Careers

Security Engineer, Lead

Chai Discovery

Chai Discovery

Other Engineering
San Francisco, CA, USA
Posted on Jun 30, 2025

Position Overview:
As a Security Engineer, you will serve as the technical and strategic driver for the company's security posture. You will lead a small but growing team of security engineers, partnering with product and infrastructure groups to design, implement, and continuously improve secure‑by‑design solutions that scale.

Responsibilities:

  • Lead and mentor a team of security engineers, setting clear objectives and reviewing performance.

  • Define and execute the security engineering roadmap in alignment with business and compliance requirements.

  • Drive threat modeling, risk assessments, and architecture reviews for new and existing services.

  • Design, deploy, and operate detection & response capabilities.

  • Architect and enforce zero‑trust network segmentation, IAM policies, and least‑privilege access.

  • Serve as incident commander for high‑severity security incidents, coordinating investigation, containment, and remediation.

  • Evaluate and integrate security tooling and managed services; manage vendor relationships and budget.

  • Produce and present security metrics, KPIs, and risk posture updates to executives and the board.

Qualifications:

  • 8+ years of progressive experience in information security, with at least 2 years leading or managing engineering teams.

  • Demonstrated expertise in cloud security (AWS, GCP, or Azure) and container security (Docker/Kubernetes).

  • Hands‑on experience building and operating detection & response pipelines and handling incidents end‑to‑end.

  • Deep understanding of network protocols, authentication, encryption, and modern zero‑trust architectures.

  • Familiarity with compliance and risk frameworks (SOC 2, ISO 27001, PCI‑DSS) and ability to translate requirements into technical controls.

  • Exceptional verbal and written communication skills; ability to influence and collaborate across functions.