Senior Application Security Engineer

We’re seeking a Senior Application Security Engineer to help strengthen Zeta’s application and platform security posture. You’ll play a critical role in embedding security throughout the software development lifecycle, ensuring our systems, applications, and AI-driven platforms are built securely from the ground up. Zeta operates at massive scale, powering billions of consumer profiles and petabytes of data across real-time, AI-powered marketing platforms. In this role, you’ll collaborate with engineering and product teams to identify risks, implement secure design principles, and build automated controls that enable secure innovation. This position offers significant technical scope, cross-functional visibility, and opportunities to contribute directly to the company’s overall security maturity. Key Responsibilities: Threat Modeling & Security Validation Conduct threat modeling and security reviews for distributed cloud-native systems. Perform security code reviews, static/dynamic analysis (SAST/DAST), and dependency scanning. Participate in incident response exercises and red/blue team simulations. Assess third-party libraries, APIs, and vendor integrations for security compliance. Embedding Security into the SDLC Partner with developers and QA engineers to embed security testing into CI/CD pipelines. Review architecture and design documents to identify and mitigate risks ear