Sr. IT Application Security Engineer

Support enterprise application security in a hybrid role based in Reston, VA, focusing on WAF administration, container image security scanning, and SDLC/CI-CD security controls.

• Administer and enhance enterprise BIG-IP WAF capabilities, including building security policies, tuning rules, investigating false positives, troubleshooting application traffic issues, and maintaining web application protections
• Design, implement, and operate application security controls across enterprise applications and supporting platforms
• Perform container image security scanning and analyze vulnerabilities found in application and container images
• Assess severity and business risk for container vulnerabilities and collaborate directly with development teams to prioritize and remediate findings
• Partner with Development and Dev Ops teams to embed security controls into the SDLC and CI/CD pipelines
• Design and operate web application and API security protections
  , including policy configuration, rule tuning, automation, and continuous improvement
• Identify application security vulnerabilities, complete risk assessments, and recommend practical mitigation and remediation strategies
• Develop and maintain application security policies, standards, procedures, and controls
• Build and maintain security monitoring and telemetry for the application stack to improve proactive detection
• Conduct technical investigations tied to application security incidents and vulnerabilities
• Support container security activities, including image scanning, vulnerability risk assessments, and runtime security/hardening
• Operate and support security technologies across cloud and/or on-premises environments
• Troubleshoot security, application, and network-related issues and communicate findings and recommended actions clearly
• Partner with senior IT stakeholders to interpret application security risks, priorities, and remediation needs

• 6–8 years of Application Security experience designing, implementing, and operating security controls in enterprise application environments
• Hands-on BIG-IP WAF administration
  , including building WAF policies, configuring protections, tuning rules/policies, troubleshooting in production, reducing false positives, and maintaining WAF controls
• Hands-on container image security/scanning
  , including reviewing scan results, evaluating vulnerabilities, determining risk and remediation priorities, and working directly with development teams
• Experience with a container security/scanning platform (tool not critical). Relevant examples include Prisma Cloud
  , Wiz
  , Snyk
  , or comparable technologies
• Strong web application security knowledge, including OWASP Top 10 vulnerabilities and practical application of security controls
• Experience conducting web application security scans, vulnerability assessments, and/or penetration testing
• Experience partnering directly with Development and Dev Ops teams to integrate security into the SDLC and CI/CD pipelines
• Experience with authentication and authorization technologies such as OAuth and OpenID
• Strong troubleshooting and communication skills, able to explain security risks and remediation requirements to both technical teams and senior IT stakeholders
• Bachelor’s degree in Information Security, Computer Science, Computer/Electrical Engineering, or a related discipline, and/or equivalent relevant professional experience
• Demonstrated production experience administering BIG-IP WAF, including building and tuning WAF policies
• Demonstrated hands-on experience with container image scanning and vulnerability management
• Experience personally reviewing container vulnerabilities and collaborating with developers on remediation
• Experience integrating security practices and controls into CI/CD and secure software development processes
• Experience operating cloud-based and/or on-premises security platforms
• Ability to investigate and troubleshoot security and network-related issues using established security methodologies and best practices
• Strong communicator who can work effectively with developers, Dev Ops engineers, operations teams, and senior IT stakeholders
• Collaborative and approachable, able to influence remediation and security improvements while maintaining cross-functional relationships
• Proof of eligibility to work in the United States

• BIG-IP WAF
• OWASP Top 10
• OAuth
• OpenID
• Prisma Cloud
• Wiz Snyk
• CI/CD
• SDLC li>

• 150-180K base salary + 7% Bonus

• Hybrid in Reston, VA 20190
• 3 days on-site per week (Tues/Wed)