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Staff security engineer, application security

WRITER· EPD
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Hybrid (New York City, NY), Hybrid (Seattle, WA), Hybrid (San Francisco, CA)$204k - $240k + bonusFull-timePosted 3w ago

About the role

Staff security engineer focusing on application security for WRITER's AI platform, bridging application security, AI infrastructure, and developer enablement to embed security into code, secure AI systems, and protect data pipelines and training environments.

Responsibilities

  • Build security into the DNA of our AI platform by conducting threat modeling sessions with product teams, designing secure architectures for new features, and ensuring security considerations shape product decisions from day one—not after the fact

Qualifications

  • Minimum 4 years of hands-on experience in application security engineering, with a proven track record of securing large-scale production systems
  • Understanding of developer experience and developer workflows for shipping features and products
  • Technical expertise in at least two programming languages (Python, Java, Go, JavaScript/TypeScript) and the ability to read and review code across multiple languages
  • Knowledge of security tools and methodologies including SAST/DAST solutions, vulnerability management platforms, security testing frameworks, and DevSecOps practices
  • Excellent communication skills to translate complex security concepts for technical and non-technical audiences
  • A builder's mindset to automate, scale, and empower security
  • Alignment with WRITER's values: Connect, Challenge, and Own
  • This role is open to Mid, Sr. and Staff level candidates

Skills

Required:Threat modelingSecure coding practicesCI/CD security toolingSecurity reviewsSecurity communication

Benefits

  • Generous PTO, plus company holidays
  • Medical, dental, and vision coverage for you and your family
  • Paid parental leave for all parents (16 weeks)
  • Fertility and family planning support
  • Early-detection cancer testing through Galleri
  • Flexible spending account and dependent FSA options
  • Health savings account with company contribution
  • Annual work-life stipends: wellness, learning and development
  • Company-wide off-sites and team off-sites
  • Competitive compensation, company stock options and 401k
Last updated Oct 1, 2026. Interested? Apply on the company site.

About WRITER

End-to-end agent builder platform that unites IT & business

Eliminate silos with an end-to-end agent builder platform, designed for collaboration—without compromise. Build, activate, and supervise agents.

AI platformsAI research labcollaborative toolsenterprise technologygenerative AIindustry solutionsliquid-ai-recruiting-target
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