Senior/Staff Engineer, Application & Product Security

Grow Therapy is a mental health care company that operates a three-sided marketplace serving providers, insurance payors, and patients. The Senior/Staff Engineer will make secure development the default by embedding security requirements, CI guardrails, threat modeling, vulnerability mitigation, and secure coding practices across the engineering organization, including AI and agent features.

Responsibilities:

• Champion a secure by default culture, building defense in depth into our frameworks, architecture, and everyday processes
• Develop security requirements and work directly with teams to build them into new applications and services
• Manually dig into our source code to build a real, working understanding of our products, not just a surface level view from tooling output
• Drive the product security roadmap in collaboration with product, engineering, and the wider security team
• Partner across product, engineering, DevOps, and services to ship secure software without slowing teams down
• Design solutions that resolve and mitigate vulnerabilities and risk, and research the threats and attack methods most relevant to Grow
• Run security risk assessments, hands on penetration testing, and threat modeling, and turn those findings into secure coding education for engineers

Requirements:

• You have 6+ years of experience in application or product security
• You code well enough to automate tedious work and build frameworks or services that solve real security problems
• You've been hands on with microservice architectures
• You collaborate well, both within a security team and across the wider engineering org
• You prioritize based on real risk, not just raw vulnerability counts
• You've rolled up your sleeves and built a deep understanding of a codebase, rather than just talking about SAST, DAST, and SBOM tooling from the outside
• You work well with product managers and service teams, not just engineers, and you genuinely care about the product and how it actually functions
• This role can be hybrid (onsite from our NYC, San Francisco, or Seattle hub location three days per week: Tuesday, Wednesday, Thursday) or fully remote. Both arrangements include travel 2–3 times per year (e.g., company and department offsites)