About The Company

Gemini is a global crypto and Web3 platform founded by Cameron and Tyler Winklevoss in 2014. We offer simple, reliable, and secure crypto products and services to individuals and institutions in over 70 countries. Our mission is to unlock the next era of financial, creative, and personal freedom by providing trusted access to the decentralized future.

The Department: Application Security The Role: Senior Application Security Engineer

As a member of the Application Security (AppSec) team, you will protect Gemini and our customers from application security threats. You will work closely with engineering and product teams to provide security recommendations, conduct design reviews, threat modeling, code reviews, and penetration testing, and build and maintain application security tooling that scales across the organization.

NOTE: This role requires in-person presence twice a week at either our San?Francisco, CA or New?York City, NY office.

Responsibilities

• Support the Gemini Secure Software Development Lifecycle as an application security subject-matter expert through design review, threat modeling, code review, and penetration testing.
• Collaborate and advise engineering teams on application security best practices and vulnerability remediation.
• Perform deep-dive security reviews to ensure all Gemini products and services follow secure design principles across our product portfolio (web, mobile, and APIs).
• Research, build, and drive adoption of high-signal application security automation and secure-by-default frameworks.
• Create and deliver hands-on software security training to engineering teams to enable engineers at scale.
• Participate in the Application Security on-call rotation to support engineering teams during incidents.

Minimum Qualifications

• 5+ years of experience in application security or related roles.
• Ability to perform design reviews, threat modeling, secure code reviews, or penetration testing with an attacker mindset.
• Strong background in application security best practices and familiarity with common vulnerabilities (eg SSRF, race conditions, privilege escalations).
• Some background in development or Scripting (Python, Scala, C+, or JavaScript).
• Familiarity with business objectives, context, and security risk.
• Strong communication skills and ability to collaborate on cross-functional teams.

Preferred Qualifications

• Experience with microservice architectures.
• Experience with cloud-native environments.
• Experience preventing application security vulnerabilities through secure design patterns, automated tooling, or frameworks.
• Experience with supply chain security.

Compensation & Benefits

Competitive starting salary, discretionary annual bonus, long-term incentive (new hire equity grant), comprehensive health plans, 401(k) with company matching, paid parental leave, flexible time off.

Salary Range: $140,000 - $200,000 (state varies by location). This range does not include discretionary bonus or equity.

Equal Opportunity Employer

Gemini is committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, Veteran status, or any other protected class. If you require accommodation during the application or interview process, please inform the People Team.