Senior L4 Network Engineer​/Architect – MPLS Network Engineering

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We are seeking a Senior L4 Network Engineer/Architect to lead the design and delivery of carrier‑grade MPLS networks integrated with fiber and DWDM ring architectures for large‑scale, mission‑critical environments. This role will define architecture direction, drive complex deployments across geographically diverse venues, and mentor engineering teams while ensuring compliance with stringent SLAs and security standards. The ideal candidate combines deep expertise in MPLS Layer 2/3 VPNs
, traffic engineering
, and optical transport technologies with hands‑on experience in Cisco routing platforms
, QoS
, and network resiliency
.

• Architect MPLS Core and Edge Solutions: Design MPLS‑based WAN services supporting IP‑VPN, L2
  
  VPN, and multicast over fiber and DWDM rings; ensure compliance with SLA‑driven latency, jitter, and packet loss requirements.
• Plan Optical Transport Integration: Engineer DWDM ring topologies for high‑capacity backbone connectivity; define optical budgets, protection schemes, and diverse path strategies for dark fiber deployments.
• Implement High Availability & Diversity: Design redundant ingress/egress paths, dual‑homed PoPs, and geographically diverse fiber routes to meet 99.995% uptime targets.
• Traffic Engineering & QoS: Apply MPLS TE, RSVP‑TE, and hierarchical QoS to optimize bandwidth allocation across multiple venues and critical applications.
• Security & Segmentation: Integrate MPLS VPN segmentation with Zero Trust principles; enforce encryption (MACsec/IPsec) and compliance with FCC and cybersecurity standards.
• Performance Testing & SLA Assurance: Develop KPIs, conduct end‑to‑end load testing, and validate optical and MPLS performance using OTDR, iPerf, and Thousand Eyes.
• Automation & Orchestration: Utilize Cisco IOS‑XE programmability, Ansible, and API‑driven workflows for zero‑touch provisioning and lifecycle management.
• Documentation & Governance: Produce HLD/LLD, as‑built diagrams, fiber route maps, and compliance artifacts; maintain iterative design updates throughout project lifecycle.
• Stakeholder
  
  Collaboration:
  
  Work closely with service providers, fiber partners, and security teams to ensure seamless integration of MPLS and optical transport layers.

• Active CCIE (Enterprise Infrastructure or Service Provider track strongly preferred).
• 10+ years in carrier‑grade WAN engineering, including 5+ years MPLS architecture and deployment experience
  .
• Proven expertise in MPLS L2/L3 VPN
  , traffic engineering
  , and QoS strategies
  .
• Strong knowledge of optical transport technologies (DWDM, dark fiber design, OTDR testing).
• Hands‑on experience with Cisco Catalyst 8500/ASR platforms
  , IOS‑XE
  , and network automation tools
  .
• Familiarity with BGP, OSPF, IS‑IS
  , and advanced routing policy design for large‑scale networks.

• Experience with DWDM system design
  , optical power budgeting, and fiber route diversity planning.
• Knowledge of DDoS mitigation
  , cybersecurity hardening
  , and integration with SOC platforms.
• Exposure to SD‑WAN
  , cloud connectivity
  , and hybrid MPLS/Internet architectures.

• Must reside in the Los Angeles metro area and work onsite at client office in Downtown LA.
• Off‑hours change windows required for critical migrations and testing.

Applicants must be legally authorized to work in the United States at the time of application and must not require sponsorship for employment visa status now or in the future.

Where required by law, NTT DATA provides a reasonable range of compensation for specific roles. The starting salary range for this onsite role is $160K-$190K plus bonus
. 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,…