Staff Product Security Engineer — AI Security Leader Remote

Speedrun Talent Network; Northern (KY); Hybrid; USD 140,000 - 190,000; Full time

Job summary

Phantom is building an AI-native security team to secure mobile, web, and backend products. As a Staff level security engineer, you will own security initiatives from discovery to remediation and lead efforts across engineering and product teams.

This role centers on architecture reviews, threat modeling, secure development, tooling, and incident response to raise the security bar while enabling rapid delivery across Phantom’s platform.

Responsibilities

• Product Security Ownership: identify and address security risks across Phantom's mobile applications, web products, APIs, and backend services.
• Architecture and Threat Modeling: lead security reviews for new products and major architectural changes, focusing on authorization boundaries, data, transaction integrity, key material, and third-party integrations.
• Secure Product Development: embed practical security controls into the software development lifecycle, from design and implementation through testing, release, and production operation.
• Code Review and Security Testing: perform AI assisted security code reviews and targeted testing of high-risk features; develop repeatable approaches to find vulnerabilities before production.
• Security Tooling: develop and improve tooling that gives engineers fast, actionable security feedback with automation and AI-assisted workflows.
• Software Supply Chain Security: harden CI/CD, build, and release systems against supply chain threats, including dependency risk and secrets exposure.
• Vulnerability Management: triage findings from internal testing, researchers, bug bounty submissions, and third-party assessments; drive remediation.
• Incident Response: support investigation of product security incidents and turn lessons into durable improvements.
• Technical Leadership: establish security patterns and expectations across engineering; lead cross-functional initiatives at Staff level.

Skills

Security engineering

Threat modeling

Code review

AI-assisted security

Tools

CI/CD tooling

Job description

Phantom is building an AI-native security team to secure mobile, web, and backend products. As a Staff level security engineer, you will own security initiatives from discovery to remediation and lead efforts across engineering and product teams.

This role centers on architecture reviews, threat modeling, secure development, tooling, and incident response to raise the security bar while enabling rapid delivery across Phantom’s platform.