Senior Network Security Engineer

Company Overview: Req ID: 374417 NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now. NTT DATA's Client is currently seeking a Systems Integration Specialist Advisor to join their team in Plano, Texas (US-TX), United States (US). Job Description:

• NTT DATA's Client is seeking a highly experienced Senior Network Security Engineer to support a strategic initiative involving the encryption and decryption optimization of approximately 80 Next-Generation Firewalls (NGFWs) utilizing Palo Alto Networks technology. The engineer will be responsible for implementing Palo Alto recommended best practices and configuration changes while collaborating closely with internal engineering resources.
• This role requires strong expertise in Palo Alto firewall administration, SSL/TLS decryption policies, network security architecture, troubleshooting, and integration with Cloudflare and load balancing environments.

Key Responsibilities

• Lead implementation of Palo Alto recommended changes across approximately 80 NGFW firewalls.
• Design, configure, and optimize SSL/TLS encryption and decryption policies.
• Perform firewall rule analysis, policy tuning, and security hardening.
• Collaborate with Cadence engineering teams on architecture, deployment planning, and operational readiness.
• Work alongside Cloudflare and load balancer infrastructure teams to ensure secure and optimized traffic flow.
• Troubleshoot complex networking and security issues involving encrypted traffic inspection.
• Validate firewall performance, stability, and security compliance after implementation changes.
• Develop implementation documentation, operational procedures, and knowledge transfer materials.
• Mentor and support the junior engineer assigned to the project.
• Assist in transition and operational handoff to the designated Client engineer being groomed for long-term ownership.

Required Qualifications

• 7+ years of hands-on network security engineering experience.
• Strong expertise with Palo Alto Networks NGFW platforms.
• Deep understanding of SSL/TLS decryption technologies and best practices.
• Experience implementing Palo Alto recommended security architecture and policy changes.
• Hands-on experience with Palo Alto Panorama, Security policies and NAT, Threat Prevention, URL Filtering, SSL Forward Proxy / Inbound Inspection.
• Experience integrating security controls with Cloudflare environments.
• Strong understanding of load balancer technologies and traffic flow concepts.
• Excellent troubleshooting and analytical skills.
• Strong documentation and communication abilities.
• Preferred Qualifications
• Palo Alto certifications (PCNSE preferred).
• Experience in large enterprise firewall environments.
• Familiarity with Zero Trust and modern security architectures.
• Experience working in staff augmentation or consulting engagements.

About NTT DATA: NTT DATA is a $30 billion trusted global innovator of business and technology services. We serve 75% of the Fortune Global 100 and are committed to helping clients innovate, optimize and transform for long term success. As a Global Top Employer, we have diverse experts in more than 50 countries and a robust partner ecosystem of established and start-up companies. Our services include business and technology consulting, data and artificial intelligence, industry solutions, as well as the development, implementation and management of applications, infrastructure and connectivity. We are one of the leading providers of digital and AI infrastructure in the world. NTT DATA is a part of NTT Group, which invests over $3.6 billion each year in R&D to help organizations and society move confidently and sustainably into the digital future. Visit us at us.nttdata.com NTT DATA endeavors to make https://us.nttdata.com accessible to any and all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please contact us at https://us.nttdata.com/en/contact-us. This contact information is for accommodation requests only and cannot be used to inquire about the status of applications. NTT DATA is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. For our EEO Policy Statement, please click here. If you'd like more information on your EEO rights under the law, please click here. For Pay Transparency information, please click here.