NTT DATA, Inc. · 3 months ago
Senior L4 Network Engineer – Cisco SD-Access & Enterprise Networking
SoCal, CA, United States of America
Full-time, Contract
Onsite
Senior Level, Lead/Staff
$70/hr - $80/hr
10+ years expNTT DATA is a trusted global innovator of business and technology services, renowned for its technical excellence and leading innovations. They are seeking a Senior L4 Network Engineer to lead the design and delivery of Cisco Software-Defined Access solutions at scale, mentor engineers, and collaborate closely with security and operations teams.
Information Technology & Services
No H1B
Responsibilities
Own end-to-end SD-Access architecture for large, multi-site enterprises: fabric design (control/edge/border), transit options, segmentation (SGTs/TrustSec), identity policy, and integration with WAN and data center
Lead Catalyst Center–driven automation: design templates, SDA workflows, network assurance, SWIM, and closed-loop operations aligned to reliability/SLOs
Design identity-centric security with ISE: policy sets, authorization profiles, posture, PxGrid integrations, wired/wireless 802.1X/MAB, guest/BYOD, and scalable group policies
Engineer secure edge and campus perimeters: Cisco FTD/Firepower policy design, NAT, VPN, IDS/IPS, SSL decryption strategy, and high availability
Architect SD-WAN underlay/overlay: transport independence, application-aware routing, DIA/Cloud on-ramp, security integration, and multi-region scale
Expert routing at scale: BGP (policy, route reflectors, communities), OSPF, EIGRP, ECMP, redistribution strategies, route filtering, summarization, and IPv6 planning
Drive modernization roadmaps: brownfield to SDA migration, hierarchical campus design, QoS, multicast, wireless controller (Catalyst 9800) alignment, and resiliency patterns
Deliver hands-on build and escalation leadership: lab validation, pilot, phased rollout, cutover plans, MOPs, change windows, and root-cause analysis for P1/P2 incidents
Mentor and uplift engineering teams: design reviews, standards, runbooks, and enablement sessions for operations and field engineers
Stakeholder leadership: collaborate with security, EUC, cloud, and application teams; translate business outcomes into technical architectures and measurable milestones
Documentation & governance: HLD/LLD, as-builts, standards, security exceptions, and compliance artifacts; contribute to reference architectures and reusable templates
Qualification
Required
Active CCIE (any track; Enterprise Infrastructure and/or Security strongly preferred)
10+ years enterprise networking experience, including 3–5+ years leading SD-Access architecture and deployment across multiple sites
Proven, exceptional hands-on skills with Cisco routing/switching and Catalyst Center (formerly Cisco DNA Center) for SDA automation and assurance
Deep expertise with Cisco ISE (policy, 802.1X, SGT/TrustSec) and Cisco FTD (Firepower) firewalls (threat, access control, NAT/VPN, high availability)
Strong experience with Cisco SD-WAN (design, policy/templating, security integration, operationalization)
Expert-level knowledge of BGP, EIGRP, OSPF, redistribution, and route-policy design for large enterprises
Demonstrated success leading complex, multi-phase migrations and mentoring senior engineers
Preferred
CCDE or dual CCIE; Cisco Certified Specialist certifications in SDA, ISE, or SD-WAN
Automation fluency (Ansible, Python, Terraform), Git-based workflows, and API integration with Catalyst Center/ISE/FTD/SD-WAN
Wireless (Catalyst 9800/Prime/Catalyst Center Assurance), QoS strategy, multicast, NAC posture, and Zero Trust segmentation
Cloud networking (Azure/AWS), hybrid connectivity, and DNS/DHCP/IPAM integration
Familiarity with data center and campus interconnect (e.g., ACI concepts beneficial but not required)
Benefits
Medical
Dental
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
Additional voluntary or legally required benefits
Company
NTT DATA, Inc.
NTT DATA, Inc. is a trusted global innovator of business and technology services.
10001+ employees
Funding
Current Stage
Late StageLeadership Team
Chris Paulen
Chief Technology Officer
Robert Kastronis
Principal Architect, CSD_Technology Strategy|CTO Office|NTT
Recent News
2025-10-04
EIN Presswire
2025-10-03
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