Senior Network Security Architect

Job DescriptionJob DescriptionAt 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. Key Responsibilities Palo Alto Security AdministrationDesign, deploy, and support Palo Alto Next-Generation Firewalls (NGFW) across enterprise environments.Manage and troubleshoot: Security policiesNATVPNsRoutingApp-ID / User-IDSSL DecryptionURL FilteringDNS SecurityWildFireThreat PreventionPerform 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.Panorama & Strata Cloud Manager (SCM)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.Zscaler AdministrationDesign, deploy, and administer Zscaler ZIA and ZPA solutions.Configure and manage: Application SegmentsApp ConnectorsService EdgesAccess PoliciesBrowser AccessSecurity PoliciesSSL InspectionCloud FirewallData Protection ControlsSupport Zero Trust initiatives.Troubleshoot connectivity, authentication, and application access issues.Lead migrations from traditional VPN solutions to ZPA.Security Operations & Cloud IntegrationMonitor 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: NISTCISISO 27001Secure 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, PowerShell, or Terraform.Required Qualifications Experience12+ years of Network Security / Security Engineering experience.10+ years of hands-on Palo Alto Networks firewall experience.10+ years managing Panorama environments.Hands-on experience with Strata Cloud Manager (SCM).4+ years supporting Zscaler ZIA and ZPA solutions.Experience supporting enterprise-scale security operations.Core Technical Skills Palo Alto TechnologiesPalo Alto NGFW AdministrationPanorama ManagementStrata Cloud Manager (SCM)Palo Alto Logging ServiceSSL DecryptionThreat PreventionWildFireDNS SecurityURL FilteringNAT & Security Policy ManagementSite-to-Site VPN & IPSec VPNZscaler TechnologiesZIA (Zscaler Internet Access)ZPA (Zscaler Private Access)Zscaler Client Connector (ZCC)Zero Trust ArchitectureCloud FirewallSSL InspectionApplication SegmentationIdentity-Based Access ControlNetworkingTCP/IPDNSDHCPVLANsNetwork SegmentationRouting & SwitchingBGPOSPFMPLSIPSecCloud & AutomationMicrosoft AzureAWSCloud Security ArchitectureSASE / SSE PlatformsPythonPowerShellTerraformPreferred QualificationsPCNSE (Palo Alto Certified Network Security Engineer)Palo Alto Strata Cloud Manager CertificationZscaler Certified Administrator (ZCCA)Zscaler Certified Architect (ZCCA / ZCCA-IA)CISSP, CISM, or CCSPExperience with Terraform and/or AnsibleScripting and automation experienceKey CompetenciesAdvanced troubleshooting and analytical skills.Strong communication and stakeholder management abilities.Experience leading security projects and major incident response efforts.Deep understanding of Zero Trust, SASE, and enterprise security architecture.Ability to work independently in a large enterprise environment.Experience mentoring junior engineers and promoting security best practices.#LI-NorthAmerica About NTT DATA Services: NTT DATA Services is a recognized leader in IT and business services, including cloud, data and applications, headquartered in Texas. As part of NTT DATA, a $30 billion trusted global innovator with a combined global reach of over 80 countries, we help clients transform through business and technology consulting, industry and digital solutions, applications development and management, managed edge-to-cloud infrastructure services, BPO, systems integration and global data centers. We are committed to our clients' long-term success. Visit nttdata.com or LinkedIn to learn more. NTT DATA Services is an equal opportunity employer and considers all applicants without regarding to race, color, religion, citizenship, national origin, ancestry, age, sex, sexual orientation, gender identity, genetic information, physical or mental disability, veteran or marital status, or any other characteristic protected by law. We are committed to creating a diverse and inclusive environment for all employees. If you need assistance or an accommodation due to a disability, please inform your recruiter so that we may connect you with the appropriate team. Where required by law, NTT DATA provides a reasonable range of compensation for specific roles. The starting hourly range for this remote role is ($80.12 - 90/hourly ). This range reflects the minimum and maximum target compensation for the position across all US locations. Actual compensation will depend on several factors, including the candidate's actual work location, relevant experience, technical skills, and other qualifications. This position is eligible for company benefits that will depend on the nature of the role offered. Company benefits may include medical, dental, and vision insurance, flexible spending or health savings account, life, and AD&D insurance, short-and long-term disability coverage, paid time off, employee assistance, participation in a 401k program with company match, and additional voluntary or legally required benefits.