Senior Security Engineer

About the Role

This is a high-ownership application security role at a rapidly scaling AI platform that serves enterprise customers across chat, voice, and email. You will partner directly with product engineering to embed security throughout the full software development lifecycle, protecting sensitive customer data at scale. It is a great fit for a strong software engineer moving into security, or an experienced AppSec engineer who thrives in a fast-paced, high-trust environment.

What You'll Do

• Design and implement application security controls across a multi-tenant AI agent platform, including secure coding practices, threat modeling, and vulnerability management.

• Partner closely with product engineering teams to integrate security from design through deployment.

• Build security tooling and automation that helps developers ship quickly while surfacing and remediating vulnerabilities fast.

• Lead security code reviews and architecture assessments for new features, with particular focus on AI model integration points and customer data handling.

• Respond to security incidents involving application vulnerabilities and drive post-incident improvements.

What We're Looking For

• 4+ years of experience in software engineering or security engineering, with hands-on application or infrastructure security experience.

• Strong CS fundamentals, ideally from a rigorous academic or professional background.

• Experience with GCP or AWS cloud security.

• Familiarity with security tooling such as Semgrep, CodeQL, SAST, DAST, IAST, or container security practices.

• Comfortable working in Python and within CI/CD pipelines and Kubernetes environments.

• Background at a hyper-growth or VC-backed technology company, with a track record of working in talent-dense engineering organizations.

• Experience as an early or founding security engineer is a plus.

• Competitive programming experience (e.g. ACM-ICPC or similar) is a plus.

• No pure compliance or GRC-only background; hands-on engineering experience is required.

Compensation & Benefits

The base salary range for this role is $200,000 to $330,000 USD annually, plus equity. Visa sponsorship is available.

Location

This role is fully on-site in San Francisco, CA, five days per week.