Staff AI Security Engineer

Spring Health is a global mental health company on a mission to eliminate every barrier to mental health. We are actively seeking a Staff AI Security Engineer to join our team. Reporting to our Sr. Director, Engineering, Platform Infrastructure, you will define and evolve our AI security strategy to protect highly sensitive mental health data across both product and corporate environments. This is a hybrid role based in Seattle, with an expectation to be in the office 2–3 days per week at our 255 King St location.

Responsibilities

Define and evolve our AI security strategy to protect highly sensitive mental health data across both product and corporate environments; Lead secure design and threat modeling for AI systems including LLMs, agentic workflows, and retrieval pipelines; Identify and mitigate risks such as prompt injection, data exfiltration, model abuse, and privilege escalation; Build scalable AI security guardrails and tooling that enable safe experimentation across engineering and business teams; Establish AI-specific governance frameworks covering identity, access control, auditability, and observability; Take ownership of and lead our AI Red Team to proactively identify vulnerabilities; Design and implement AI observability pipelines to detect anomalous model behavior and policy violations in near real-time; Develop and operationalize AI incident response playbooks to ensure rapid containment of security events; Partner with product and engineering teams to enable responsible AI innovation in a hyper-growth environment; Champion a culture of secure AI development by mentoring engineers and defining high standards for the organization

Requirements

10+ years experience in a software engineering discipline, with at least 5+ years focused on security; Hands-on experience securing AI/ML systems, including practical AI red teaming against LLMs, agentic workflows, or RAG systems; Experience developing or implementing automated LLM vulnerability testing for prompt injection and data exfiltration; Strong foundation in application security principles, threat modeling, secure design, and identity and access control; Demonstrated ability to build tools and automation with a developer mindset; Experience influencing senior engineers and cross-functional stakeholders across product, legal, and compliance; Proven track record of mentoring engineers and cultivating a strong security culture across an organization; Strong working knowledge of modern developer tooling, CI/CD pipelines, and git-based collaboration; Ability to operate in ambiguity and translate emerging AI risks into pragmatic, scalable security controls; Deep personal ownership and a passion for advancing AI security through continuous learning; Candidates must be based in Seattle metro area or able to relocate independently within 90 days of their start date

Benefits

Health, Dental, Vision benefits start on your first day at Spring; Access to One Medical accounts; HSA and FSA plans available, with Spring contributing up to $1K for HSAs; Employer sponsored 401(k) match of up to 2%; Yearly allotment of no cost visits to Spring Health network of therapists, coaches, and medication management providers; Competitive paid time off policies including vacation, sick leave and company holidays; Parental leave of 18 weeks for birthing parents and 16 weeks for non-birthing parents; Access to Noom; Access to fertility care support through Carrot, in addition to $4,000 reimbursement for related fertility expenses; Access to Wellhub; Access to BrightHorizons for sponsored child care, back-up care, and elder care; Up to $1,000 Professional Development Reimbursement a year; $200 per year donation matching; Stock options