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Senior Security Engineer

San Francisco, CA$200k–$330k/yrDirect HirePosted Oct 14, 2026

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Screening questions

Share specific examples from your own work. The recruiting team will review your answers alongside your resume.

Describe a production software or security system you personally built on a small or fast-growing team. What did you own end to end, and what changed because of your work?

Give an example of an application-security issue you found and fixed, such as access control, tenant isolation, injection or sensitive-data exposure. How did you assess the risk and verify the fix? If you are moving into security, use a relevant software-engineering example.

Describe a developer-facing tool, CI/CD check or automated workflow you built. How did it improve security or engineering quality, and how did you make it useful to the developers adopting it?

This is a full-time, five-days-in-office role in San Francisco with $200K-$330K base salary plus equity. Can you meet that office schedule, would you need to relocate, what base salary are you targeting, and would you need visa sponsorship or a transfer?

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You're applying for

Senior Security Engineer

San Francisco, CA

$200k–$330k/yr

Direct Hire

About the Company

The company builds a conversational AI platform that helps enterprise brands deliver personalized customer experiences across voice, chat, email and other channels. Its AI agents handle sensitive customer interactions, creating meaningful application-security challenges across a growing, multi-tenant product.

About the Role

Senior Security Engineer

Own application security for a rapidly scaling enterprise AI platform. Partner directly with product engineers to build security into the software development lifecycle, create developer-friendly security tooling and protect customer data. This is a hands-on engineering position within the security organization, not a compliance/GRC role. Experienced AppSec engineers and strong software engineers with a serious interest in moving into security are welcome.

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.

Work with product engineering teams to integrate security from design through deployment.

Build security tools and automation that help developers find and remediate vulnerabilities without slowing delivery.

Lead security code reviews and architecture assessments for new features, including AI model integration points and customer-data handling.

Respond to application-security incidents and drive practical post-incident improvements.

Help shape engineering security practices across a growing organization.

What We're Looking For

4+ years of relevant hands-on software engineering experience, with security engineering experience or a strong interest in application security.

Strong coding ability and evidence of designing, building and shipping production software. The team is language-flexible.

Experience operating with high ownership and speed on a smaller team, at a VC-backed startup or in a comparable high-growth environment.

Cloud security knowledge, particularly GCP or AWS.

Ability to collaborate with product engineers, explain technical risks clearly and translate ambiguous problems into practical solutions.

Computer science education and strong engineering fundamentals.

Willingness to work on-site in San Francisco five days per week.

Application- or infrastructure-level security engineering experience.

Early or founding security engineering ownership.

Experience with security tooling such as Semgrep, CodeQL, SAST, DAST or IAST.

Familiarity with CI/CD security, container security or Kubernetes.

Interest in AI-specific security challenges, including prompt injection, model extraction and adversarial inputs.

The company uses practical coding exercises rather than LeetCode-style assessments. The supplied interview outline also includes systems design and final technical and team conversations; the recruiter will confirm current sequencing.

Key Skills

Software engineeringApplication securitySecurity tooling and automationThreat modelingSecure codingCloud security

Role Logistics

Role Title: Senior Security Engineer
Work Authorization: Visa sponsorship and visa transfers are available, subject to eligibility.
Location: San Francisco, CA.
Remote Policy: On-site, five days per week in the San Francisco office.
Compensation: $200,000-$330,000 annual base salary
Equity: competitive equity.

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