Skip to main content

Theori

AppSec Engineer

United States +1

Location
United States · Canada
Work
Remote
Employment
Full-time
Level
Not stated
Function
Engineering
Pay
Not stated
Posted
5 months ago

About the role

We're looking for a hands-on Cyber Security Engineer to sit at the intersection of AI-driven tooling and real-world security research. In this role, you'll own the end-to-end triage and validation lifecycle for vulnerability reports generated by our AI-powered static analysis platform, separating true positives from noise, writing proof-of-concept exploits, and reporting vulnerabilities upstream to the appropriate vendor.

This is a deeply technical role built for someone who thinks like an attacker, thrives in ambiguous environments, and has a track record of finding and exploiting vulnerabilities.

What You'll Do

  • Triage and validate vulnerability reports produced by our AI static analysis tool, verifying severity, exploitability, and business impact
  • Write proof-of-concept exploits for critical vulnerabilities to confirm true positives
  • Analyze false positives to identify patterns and provide structured feedback to engineering
  • Author detailed vulnerability reports that will be submitted to upstream vendors and open source projects

What We're Looking For

  • Experience in a security engineering, vulnerability research, or penetration testing role
  • Demonstrated CTF experience through participation in competitive CTFs (e.g. DEFCON, PlaidCTF) with writeups
  • Hands-on real-world vulnerability research and exploitation experience is preferred
  • Proficiency reading and auditing code across multiple programming languages
  • Prior bug bounty participation is preferred
  • Based in US or Canada

Source

Posted by Theori on their own hiring page, jobs.ashbyhq.com. OptiTalent shows it as published, read 07 Nov 2026 11:28 UTC; the original is the reference.

View the original ad ↗

More at Theori

  • Theori · United States

    HybridFull-timeEntry level$100K – $120K a yearSales

    Theori is a global leader in offensive security, founded by the world’s most elite hackers. With a decade of unparalleled technical expertise, we’re revolutionizing the cybersecurity paradigm with Xint, our AI-native AppSec platform spanning Xint Web (autonomous web app…

  • Theori · Washington, District of Columbia, United States

    HybridFull-timeSenior$175K – $235K a yearSecurity

    We're looking for an experienced Senior Software Engineer to help build the next generation of AI-driven security analysis at Theori. You'll play a key role in designing and implementing analysis capabilities that power Xint, our autonomous penetration testing framework, with a…

  • Theori · Austin, Texas, United States

    RemoteFull-timeSenior$140K – $180K a yearPeople & HR

    Theori is a global leader in offensive security, founded by the world's most elite hackers. With a decade of unparalleled technical expertise, we're revolutionizing the cybersecurity paradigm with Xint, our AI-native AppSec platform spanning Xint Web (autonomous web app…

  • Theori · United States

    RemoteFull-timeSeniorEngineering

    Theori is a global leader in offensive security, founded by the world's most elite hackers. With a decade of unparalleled technical expertise, we're revolutionizing the cybersecurity paradigm with Xint, our AI-native AppSec platform spanning Xint Web (autonomous web app…