Application Security Engineer II

About the Role Abnormal AI is looking for an Application Security Engineer II to secure the AI-powered systems at the core of our AWS-based platform (LLM-integrated features, agentic workflows, MCP connectors, and the model supply chain) against threats like prompt injection at production scale. This is an individual contributor role that blends deep application security expertise with strong engineering fundamentals. You'll focus on integrating security into every phase of our software development lifecycle, conducting comprehensive security reviews, and partnering with engineering teams to build defensible architectures. You will own the security architecture and development of secure coding practices while ensuring security is a foundational partner to our engineering stakeholders. You'll coach developers across the engineering organization on application security principles, act as a technical liaison across teams, and contribute directly to keeping our applications and customers secure. This role reports to the Director of Security Engineering. What you will do Lead threat modeling and security architecture reviews with engineering teams by translating security risks into concrete development actions, with particular focus on AI-powered features (LLM integrations, agentic workflows, MCP connectors). Architect, build, and maintain security tooling and integrations that make secure development the default in our CI/CD pipelines. Design and deploy automated security testing to identify vulnerabilities early in the development process. Serve as a hands-on technical contributor during security incidents by analyzing application-level behavior and enhancing response processes. Coach developers on secure coding, security architecture, and threat modeling for AI-native systems. Define and track key security posture metrics, building dashboards or reports to visualize security coverage and vulnerability trends. Must Haves 5+ years of experience in application security e