Security engineer, application security (UK)

Writer
London
Workplace: HybridFull timeFunction: CybersecurityExperience: 4+ yearsSkills: ["Communication","Problem-solving","Collaboration","Influencing"]

Security-focused role building the security foundations for WRITER’s AI platform. You’ll threat-model LLM architectures, implement automated security controls in CI/CD, lead security assessments and penetration testing, and shape secure coding standards across engineering teams to protect enterprise-scale AI services and customer data.

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Writer
Writer
3 months ago

Security engineer, application security (UK)

✓ Verified Job

Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 22 hours agoStatus: Closed
Reposted: similar role first listed 6 months ago

Job Summary

Security-focused role building the security foundations for WRITER’s AI platform. You’ll threat-model LLM architectures, implement automated security controls in CI/CD, lead security assessments and penetration testing, and shape secure coding standards across engineering teams to protect enterprise-scale AI services and customer data.
Location: London
Workplace: Hybrid
Employment Type: Full time
Job Function: Cybersecurity

Key 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
  • •Own and evolve our application security program including establish and maintain SAST/DAST scanning in CI/CD pipelines, conducting security code reviews for critical changes, and building automation that catches vulnerabilities before they reach production
  • •Partner with engineering teams to establish and champion secure coding standards, creating reusable security patterns and libraries that make it easier for developers to build securely by default
  • •Design and recommend security features and products that help secure customer environments. You are the advocate and the vision for how we protect and secure customers.
  • •Integrate and leverage AI agents to help increase velocity for the security team and the overarching engineering org to ensure that we are proactive in minimizing risk while we build products

Pay and Benefits

Perks:Health InsuranceDentalPensionEquityLearning BudgetWellness Stipend

Key Requirements

  • •4+ years of hands-on experience in application security engineering, with a proven track record of securing large-scale production systems.
  • •Experience with at least two programming languages (Python, Java, Go, JavaScript/TypeScript) and ability to read/review code across languages.
  • •Knowledge of SAST/DAST, vulnerability management, security testing frameworks, and DevSecOps practices.
  • •Excellent communication skills to translate security concepts to technical and non-technical audiences.
  • •Builder's mindset to automate, scale, and empower security within the business.
Experience:4+ yearsSecurityEnterprise
Skills:CommunicationProblem-solvingCollaborationInfluencing
Languages:English
Tech Stack:PythonJavaGoJavaScriptTypeScriptSASTDASTCI/CDSecurity testingDevSecOps

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