Staff Security Engineer

Fullscript-posted about 1 month ago
Full-time • Mid Level
Austin, TX
501-1,000 employees
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Fullscript is seeking a seasoned Staff Security Engineer to join our security team as a senior technical leader. In this role, you’ll shape the technical vision for product and AI security across the organization, mentoring teammates and driving impact through deep technical expertise and cross-functional collaboration.

  • Lead the design and implementation of robust security architectures for Fullscript’s applications, and AI initiatives.
  • Collaborate closely with engineering teams to embed security into the development lifecycle, including threat modeling, security coding practices, and design reviews.
  • Drive AI security best practices, ensuring responsible deployment, and mitigation of risks such as data poisoning, prompt injection, or model exploitation.
  • Mentor engineers and other security team members, fostering a culture of security awareness and technical excellence across the organization.
  • Conduct technical risk assessments, security research, and code reviews to proactively identify and remediate vulnerabilities.
  • Influence cross-functional teams through technical leadership, helping define security standards and strategies that scale across Fullscript’s products and AI ecosystem.
  • Stay ahead of emerging threats, attack vectors, and AI-specific security challenges to guide strategic decisions for the organization’s security posture.
  • Deep technical expertise in application security, and secure software development.
  • Experience with AI/ML security.
  • Strong understanding of modern software architectures, cloud environments, and APIs.
  • Proven ability to influence and mentor engineers across teams, fostering security-first thinking and best practices.
  • Hands-on experience with security tooling and automation, including static/dynamic analysis, monitoring, and observability systems.
  • Strong problem solving skills, able to balance security rigor with product velocity.
  • Excellent communication and collaboration skills, able to translate complex security concepts to technical and non-technical stakeholders.
  • Experience with protecting / hardening of health data.
  • Experience securing Ruby on Rails, Javascript, GraphQL applications.
  • Familiarity with regulatory and compliance frameworks relevant to software and AI security is a plus (e.g. SOC 2, NIST).
  • Generous PTO and competitive pay.
  • Fullscript’s RRSP match program for financial health.
  • Flexible benefits package and workplace wellness program.
  • Training budget and company-wide learning initiatives.
  • Discount on Fullscript catalog of products.
  • Ability to work Wherever You Work Well
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