Senior Security Engineer - Web Application & Network Protection

Senior Security Engineer – Web Application & Network Protection

Primary Talent Partners has a new contract opening for a Senior Security Engineer – Web Application & Network Protection to join a gas and electric company in Columbus, OH. This is a 12‑month contract to start with the potential for extensions.

$69.00 – $79.00 per hour; W2 contract, no PTO, no Benefits. ACA‑compliant supplemental package available for enrollment.

We are seeking a Senior Cybersecurity Engineer to lead the design, implementation, and support of enterprise web application and network security solutions.

This role will be responsible for securing internet‑facing applications through F5 Distributed Cloud WAF, API security, bot protection, and network security technologies including Palo Alto firewalls and secure remote access solutions.

The ideal candidate possesses a blend of application security, network security, and cloud security experience and is passionate about protecting critical enterprise services.

• Web Application Security
  • Administer and support F5 Distributed Cloud (XC) WAF platform.
  • Deploy and maintain WAF policies, signatures, and security controls.
  • Configure:
    • API Protection
    • Bot Defense
    • DDoS Mitigation
    • Geolocation Policies
    • Rate Limiting
    • CAPTCHA Challenges
  • Investigate and tune false positives.
  • Perform application onboarding into WAF services.
  • Conduct WAF policy reviews and optimization.
  • Support incident response involving web application attacks.
• Application Security
  • Understand and mitigate:
    • OWASP Top 10
    • Authentication attacks
    • API abuse
    • Credential stuffing
    • Session hijacking
    • Cross‑Site Scripting (XSS)
    • SQL Injection
    • SSRF
    • CSRF
  • Review application architectures and recommend security improvements.
  • Partner with development teams during application onboarding and troubleshooting.
• Network Security
  • Administer and support:
    • Palo Alto Networks NGFW
    • Prisma Access
    • Site‑to‑site VPNs
    • SSL decryption
    • NAT and security policies
    • Network segmentation
    • DNS and routing troubleshooting
  • Support production incidents and participate in on‑call rotation.
• Cloud & Automation
  • Develop automation using:
    • Python
    • REST APIs
    • Terraform
    • Git
  • Build dashboards and reporting around security posture.
  • Automate repetitive operational tasks.
• Security Operations
  • Participate in:
    • Incident response
    • Threat hunting
    • Security assessments
    • Vulnerability remediation
    • Root cause analysis
    • Architecture reviews

• Experience with:
  • Bot Management
  • API Security
  • DDoS Protection
  • CDN technologies
  • Dev Sec Ops
  • CI/CD pipelines
  • Kubernetes
  • Containers
  • Terraform

• OWASP Foundation certifications
• ISC² CISSP
• GIAC certifications
• F5 certifications

Primary Talent Partners is an Equal Opportunity / Affidavit Action employer committed to diversity in the workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, age, national origin, disability, protected veteran status, gender identity, or any other factor protected by applicable federal, state, or local laws.

If you are a person with a disability needing assistance with the application or at any point in the hiring process, please contact us at i