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Staff Product Security Engineer (Security)

Phantom
Contract type
Ongoing
Work mode
100% remote
Experience
Senior · 5+ years

Job description

Key details

  • Partner with engineering teams to identify and address security risks across mobile applications, web products, APIs, and backend services
  • Lead security reviews for new products and major architectural changes, focusing on authorization boundaries, sensitive data, transaction integrity, key material, and third-party integrations
  • Embed practical security controls into the software development lifecycle from design through production operation
  • Perform AI-assisted security code reviews and targeted testing of high-risk features, building repeatable vulnerability discovery approaches
  • Develop and improve security tooling that provides fast, actionable feedback without unnecessary friction
  • Harden CI/CD, build, and release systems against supply chain threats including dependency risk, secrets exposure, build provenance, and artifact integrity
  • Triage findings from internal testing, researchers, bug bounty, and third-party assessments, driving issues through verified remediation
  • Support investigation of product security incidents and turn lessons into durable improvements
  • Establish product security patterns and expectations across engineering; lead ambiguous cross-functional initiatives at Staff level
  • Company mission
  • Information not specified

Primary stack

Core technologies

TypeScriptPython (Programming Language)Go

Benefits

  • Information not specified

Requirements & details

  • 5+ years of experience in product security, application security, security engineering, or software engineering, including senior or staff level
  • Strong understanding of web, mobile, API, and distributed-system security including authentication, authorization, session management, cryptography, and common vulnerability classes
  • Hands-on experience building or applying AI-assisted security tooling to test applications and APIs
  • Ability to review production code in one or more languages such as TypeScript, JavaScript, Rust, Python, and Go
  • Experience securing software supply chains and CI/CD systems including dependencies, build provenance, and artifact integrity
  • Fully remote role open to candidates based in the US, UK, and Canada
  • TypeScript, JavaScript, Rust, Python, Go, AI Agents, LLMs
  • TypeScript
  • Python (Programming Language)
  • Go

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