Staff Security Engineer

About Fullscript Fullscript is an industry‑leading health technology company on a mission to help people get better. Starting in 2011, we build tools that make care smarter and more human, enabling other practitioners to access high‑quality supplements and clinical insights. Staff Security Engineer 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. What you'll do 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. What you bring to the table 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. Additional experience we value Experience protecting/hardening health data. Experience securing Ruby on Rails, JavaScript, and GraphQL applications. Familiarity with regulatory and compliance frameworks relevant to software and AI security (e.g., SOC 2, NIST) is a plus. What we can offer you 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. Fullscript is an equal‑opportunity employer committed to creating an inclusive workplace. Accommodations are available upon request at View email address on click.appcast.io. All offers are contingent on successful background checks conducted in compliance with federal, state, and provincial laws. #J-18808-Ljbffr