Senior AppSec Engineer - Build AI-Driven Secure Systems

Gemini; New York (NY); Hybrid; USD 140,000 - 200,000; Full time

Benefits offered by this job

Competitive starting pay

Discretionary annual bonus

New hire equity grant

Comprehensive health plans

401K with company matching

Paid parental leave

Flexible time off

Job summary

Gemini is seeking a Senior Application Security Engineer to join the Application Security team. You will guide engineering and product teams to design and build secure crypto products while embedding security judgment across the organization.

Gemini emphasizes AI-first security tooling and secure design practices. Responsibilities include leading design reviews and penetration testing for high‑risk products, building automated security pipelines, and partnering with engineers to remediate

Qualifications

• 5+ years of experience in application security or similar roles.
• Ability to perform design reviews, threat modeling, secure code reviews, or penetration testing with an attacker mindset.
• Experience building or contributing to security tooling and automation.
• Strong background in application security best practices and familiarity with common vulnerabilities.
• Strong communication skills to influence without authority and the ability to collaborate on a cross-functional team.

Responsibilities

• Lead secure design reviews, threat modeling, code review, and penetration testing for high-risk products such as crypto custody, trading systems, and payments.
• Build and ship AppSec tooling including AI agents for secure design and code review, AI-enhanced SAST/DAST pipelines, and automation that eliminates repeatable security toil.
• Partner with engineering teams to remediate vulnerabilities and drive long-term improvements in secure coding practices.

Skills

Application security

Threat modeling

Secure code reviews

Penetration testing

Security tooling & automation

Tools

SAST/DAST pipelines

Security tooling integrations

Job description

Gemini is seeking a Senior Application Security Engineer to join the Application Security team. You will guide engineering and product teams to design and build secure crypto products while embedding security judgment across the organization.

Gemini emphasizes AI-first security tooling and secure design practices. Responsibilities include leading design reviews and penetration testing for high‑risk products, building automated security pipelines, and partnering with engineers to remediate