Staff security engineer, application security

Writer
New York, San Francisco, Seattle
Workplace: HybridFull timeUSD 183,000 - 240,000 annuallyFunction: CybersecurityExperience: 4+ yearsSkills: ["Communication","Partnership","Builder's mindset","Ownership","Proactive risk reduction"]

Build security foundations for enterprise AI applications by embedding application security into the WRITER platform. Lead threat modeling for LLM architectures, evolve a scalable application security program with CI/CD SAST/DAST, and perform security code reviews. Partner with engineering to establish secure coding standards and reusable security patterns. Design protections for data pipelines, model training environments, and customer-facing AI agents, while staying ahead of emerging AI/ML threats.

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FursaFursa
Writer
Writer
1 day ago

Staff security engineer, application security

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Source: Company careers pageValidated by: Fursa AI
Last checked: 1 hour agoStatus: Live

Job Summary

Build security foundations for enterprise AI applications by embedding application security into the WRITER platform. Lead threat modeling for LLM architectures, evolve a scalable application security program with CI/CD SAST/DAST, and perform security code reviews. Partner with engineering to establish secure coding standards and reusable security patterns. Design protections for data pipelines, model training environments, and customer-facing AI agents, while staying ahead of emerging AI/ML threats.
Location: New York, San Francisco, Seattle
Workplace: Hybrid
Employment Type: Full time
Job Function: Cybersecurity
Seniority: Mid level

Key Responsibilities

  • •Build security into the AI platform by running threat modeling sessions, designing secure architectures, and shaping product decisions from day one.
  • •Own and evolve the application security program, including establishing SAST/DAST scanning in CI/CD and performing security code reviews for critical changes.
  • •Partner with engineering to champion secure coding standards and create reusable security patterns and libraries.
  • •Design security features to protect customer environments, including integrating AI agents to increase security and engineering velocity.
  • •Lead security assessments and penetration testing of applications, AI services, and APIs; remediate vulnerabilities at scale and build controls for data pipelines, training environments, and AI agents.

Pay and Benefits

Salary: USD 183,000 - 240,000 annually
Equity and Bonus:Equity
Perks:Paid LeaveHealth InsuranceDentalVisionPaid Parental401kLearning BudgetWellness Stipend

Key Requirements

  • •Minimum 4 years of hands-on application security engineering with a track record securing large-scale production systems.
  • •Experience integrating security into developer workflows, reducing risk while maintaining shipping velocity.
  • •Technical expertise in at least two programming languages: Python, Java, Go, JavaScript/TypeScript, with ability to read/review code across languages.
  • •Knowledge of security tools and methodologies including SAST/DAST, vulnerability management platforms, security testing frameworks, and DevSecOps practices.
  • •Excellent communication skills to explain complex security concepts to technical and non-technical audiences.
Experience:4+ yearsApplication securityDevSecOpsLLM securityAI/ML securityEnterprise systems
Skills:CommunicationPartnershipBuilder's mindsetOwnershipProactive risk reduction
Tech Stack:PythonJavaGoJavaScriptTypeScriptSASTDASTCI/CDDevSecOpsVulnerability management platformsSecurity testing frameworksThreat modelingPenetration testingAPIsLLMsAI agentsSecurity code reviewsSecurity assessments

Company Brief

Writer
Provides an AI writing platform for enterprises that helps teams create on-brand, high-quality content at scale using customizable style guides, real-time suggestions, and governance controls.
Industry: AI & Machine Learning
Company Size: Medium (51 to 250 employees)
Growth: Growth Stage Startup
Funding: Series B
Headquarters: New York, United States
Founded: 2019
WebsiteLinkedIn