AppSec Engineer

Theori (theori.io) · United States · First seen 2026-10-29

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Can I apply?

  • Full-time
  • Remote from United States, Canada
  • Work permit not stated
From the posting
employment types
ATS employment type: full_time
workplace
ATS workplace type: remote
remote eligible countries
ATS location: United States; Canada
locations
ATS location: United States; Canada

Job description

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

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