Senior Network Security Architect

At NTT DATA, we know that with the right people on board, anything is possible. The quality, integrity, and commitment of our employees have been key factors in our company's growth and market presence. By hiring the best people and helping them grow both professionally and personally, we ensure a bright future for NTT DATA and for the people who work here.

For more than 25 years, NTT DATA Services have focused on impacting the core of your business operations with industry-leading outsourcing services and automation. With our industry-specific platforms, we deliver continuous value addition, and innovation that will improve your business outcomes. Outsourcing is not just a method of gaining a one-time cost advantage, but an effective strategy for gaining and maintaining competitive advantages when executed as part of an overall sourcing strategy.

NTT DATA's Client is seeking an experienced Senior Network Security Architect to design, implement, manage, and optimize enterprise network security infrastructure with a strong focus on Palo Alto Networks NGFW, Panorama, Strata Cloud Manager (SCM), and Zscaler (ZIA/ZPA) technologies. The ideal candidate will serve as a senior technical resource responsible for securing enterprise networks, cloud environments, remote access, and Zero Trust architectures while ensuring operational excellence and compliance with security standards.

The role requires hands-on expertise in enterprise security operations, firewall policy management, threat prevention, cloud security, secure remote access, and troubleshooting complex network security issues. Experience with Palo Alto centralized management platforms including Panorama and Strata Cloud Manager, along with Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA), is essential.

• Design, deploy, and support Palo Alto Next-Generation Firewalls (NGFW) across enterprise environments.
• Manage and troubleshoot:
  • Security policies
  • NAT
  • VPNs
  • Routing
  • App- / User-
  • SSL Decryption
  • URL Filtering
  • DNS Security
  • Wild Fire
  • Threat Prevention
• Perform firewall upgrades, migrations, hardware refreshes, and HA deployments.
• Conduct rule reviews, policy optimization, and security audits.
• Lead troubleshooting and root cause analysis for security incidents.

• Manage large-scale firewall environments using Panorama and SCM.
• Develop centralized policy management and governance standards.
• Manage device onboarding, logging, policy consistency, and visibility.
• Utilize SCM policy analyzer and posture management features.
• Support security compliance and posture improvement initiatives.

• Design, deploy, and administer Zscaler ZIA and ZPA solutions.
• Configure and manage:
  • Application Segments
  • App Connectors
  • Service Edges
  • Access Policies
  • Browser Access
  • Security Policies
  • SSL Inspection
  • Cloud Firewall
  • Data Protection Controls
• Support Zero Trust initiatives.
• Troubleshoot connectivity, authentication, and application access issues.
• Lead migrations from traditional VPN solutions to ZPA.

• Monitor and respond to security incidents and vulnerabilities.
• Perform threat hunting and security investigations.
• Collaborate with SOC, Cloud, Infrastructure, and Application teams.
• Support compliance frameworks including:
  • NIST
  • CIS
  • ISO 27001
• Secure Azure and AWS environments using Palo Alto and cloud-native controls.
• Deploy and support Palo Alto VM-Series firewalls.
• Integrate security platforms with SIEM and ticketing tools.
• Automate security operations using APIs, Python, Power Shell, or Terraform.

• 12+ years of Network Security / Security Engineering experience.
• 10+ years of hands-on Palo Alto Networks firewall…