Security Engineer

Overview

Title of Role
:
Security Engineer

Location
:
San Francisco, CA (On-site)

Company Stage of Funding
:
Hyper-Growth, Highly Profitable Private Company

Office Type
:
On-site, Full-Time

Salary
:
Competitive (based on experience) + Equity

We’re representing one of the fastest-growing companies in the world, scaling from $1M to $500M in revenue run rate in just 17 months — with accelerating growth rates month over month. The company develops AI-powered systems trusted by the top 5 global AI labs
, enabling faster and more accurate performance prediction in hiring and evaluation. With a lean and profitable team, they’re scaling rapidly and looking for engineers eager to take ownership of security in a high-impact environment.

• Design and implement security controls across infrastructure, applications, and networks.
• Monitor for vulnerabilities, threats, and suspicious activity.
• Conduct penetration tests, vulnerability assessments, and incident response.
• Embed security practices into CI/CD pipelines and developer workflows
  .
• Ensure compliance with frameworks (SOC 2, ISO 27001, GDPR).
• Partner with engineers to make security a first-class part of system design
  .
• Research and respond proactively to emerging threats
  .

• Strong knowledge of security principles, tools, and best practices
  .
• Experience with SIEMs, IDS/IPS, firewalls, and vulnerability scanning.
• Familiarity with cloud security (AWS, GCP, or Azure).
• Solid understanding of encryption, authentication, and authorization systems
  .
• Track record of securing distributed, high-scale environments.
• Excellent collaboration and communication skills.
• Ability to balance security rigor with speed in a hyper-growth environment.

• Impact
  :
  Own the security function that powers critical infrastructure for the world’s leading AI labs.
• Learning
  :
  Gain early exposure to frontier AI systems and emerging risks
  .
• Growth
  :
  Take on both infrastructure and research-adjacent projects with fast paths to ownership.

• Salary
  :
  Highly competitive (commensurate with experience)
• Equity
  :
  Generous early-stage equity package
• Work Setup
  :
  On-site in San Francisco
• Other Benefits
  :
• Direct ownership of security architecture and practices
• Chance to shape security culture in a hyper-growth engineering environment
• Work alongside senior engineers at the intersection of AI and infrastructure

This role is perfect for security engineers who want to build practical, scalable defenses in high-growth environments — balancing rigor with speed while safeguarding mission-critical AI infrastructure.

Salary Range: $130,000-$500,000 base.