Senior Application Security Engineer

Location: San Antonio, TX or Plano, TX

Work Schedule: Hybrid – 4 Days Onsite / 1 Day Remote

Contract Length: 12 MonthsJob Ref #: JOB-248409

Position Summary: Seeking a Senior Application Security Engineer to provide technical expertise across the Application Security platform portfolio. The AppSec Engineer will support application security tooling, policy implementation, vulnerability analysis, false-positive validation, platform escalations, and developer enablement activities.

Key Responsibilities: Support Application Security platforms, tooling, and policy implementation. Conduct vulnerability analysis, root-cause analysis, and false-positive assessments. Support SAST, SCA, API Security, DAST, Infrastructure-as-Code (IaC), and Mobile Security testing. Administer and support AppSec platforms and security tooling. Provide secure coding guidance and vulnerability remediation support to development teams. Support platform escalations and developer enablement activities. Work with GitLab, CI/CD pipelines, and DevSecOps practices to support automated security controls. Leverage APIs, automation, and AI-assisted workflows to improve security operations.

Required Qualifications: Deep understanding of Secure SDLC and Application Security practices. Hands-on experience with SAST, SCA, API Security, DAST, Infrastructure-as-Code (IaC), and Mobile Security testing. Experience administering and supporting AppSec platforms and security tooling. Experience conducting vulnerability validation, root-cause analysis, and false-positive assessments. Experience providing secure coding guidance and remediation support to development teams. Familiarity with GitLab, CI/CD pipelines, DevSecOps practices, and automated security controls. Experience leveraging APIs, automation, and AI-assisted workflows to improve security operations. Certifications such as CSSLP, CISSP, GWAPT, GWEB, or equivalent industry-recognized credentials.