Network Engineer — Service Provider Subject Matter Expert

Overview

SP Architecture & Network Infrastructure

• Design, architect, and deploy carrier-grade IP/MPLS backbone and edge networks across multi-vendor platforms.
• Lead the full network lifecycle: requirements gathering, high-level and low-level design, lab validation, staged rollout, and production handover.
• Drive network traffic engineering, and performance optimisation across SP core and aggregation layers.
• Operate and evolve large-scale SP environments supporting multiple PoPs, and diverse service portfolios.

MPLS, Seamless MPLS & Segment Routing

• Deploy and operate MPLS-based services at carrier scale: L3VPN, L2VPN (VPWS, VPLS), and EVPN across the SP backbone.
• Architect Seamless MPLS solutions spanning access, aggregation, and core domains — including full inter-domain label stitching, hierarchy, and domain boundary design.
• Implement BGP Labeled Unicast (BGP-LU / RFC 3107) for inter-domain prefix transport, label stack engineering, and Seamless MPLS stitching between network domains.
• Deploy SR-MPLS including SR-TE policies, Flexible Algorithm (Flex-Algo), TI-LFA fast-reroute, and PCEP/PCE integration for traffic-engineered forwarding.
• Manage LDP, RSVP-TE, and SR data-plane co-existence including migration planning from legacy to SR transport.
• Configure and troubleshoot inter-AS MPLS VPN architectures: Option A, Option B, Option C etc.

BGP & Advanced Routing

• Design and operate complex BGP topologies: iBGP/eBGP, route reflector hierarchies, BGP add-path, and optimal route reflection (BGP-ORR).
• Implement advanced BGP policy: communities (standard, extended, large), attribute manipulation, traffic engineering, and BGP PIC edge/core for fast convergence.
• Deploy BGP-LS for topology distribution to SDN controllers and PCE; configure BGP-EPE for egress peer engineering and inter-domain traffic steering.
• Configure IS-IS and OSPF as SP IGPs with multi-level/area designs, TE extensions, and BFD for rapid failure detection.

Multicast — Legacy & Next-Generation MVPN

• Design and operate IP multicast at SP scale: PIM-SM, PIM-SSM, PIM-BiDir, IGMP/MLD, MSDP, and Anycast-RP.
• Deploy and support legacy MVPN (Draft-Rosen / RFC 6037) using GRE-based MDT tunnels across the SP core.
• Architect and implement NG-MVPN (RFC 6513/6514) using RSVP-TE P2MP LSPs, mLDP P2MP/MP2MP, and SR Tree-SID as multicast transport alternatives.
• Configure NG-MVPN with BGP auto-discovery, S-PMSI and I-PMSI tunnel signalling, and inter-AS NG-MVPN variants (Option B and Option C).
• Support multicast extranet designs, shared tree optimisation, and bandwidth-efficient multicast delivery for video, IPTV, and financial distribution use cases.
• Implement multicast in SRv6 networks: SRv6 Tree-SID, BIER (Bit Index Explicit Replication), and BIER-TE as modern P2MP forwarding alternatives.

Network Automation & Programmability

• Develop and maintain automation pipelines using Python, for configuration management, compliance verification, and bulk change deployment across multi-vendor SP environments.
• Implement model-driven telemetry using gRPC/gNMI/gNOI for real-time operational state streaming from Cisco IOS-XR, Nokia SR OS, and Huawei platforms.
• Work with YANG data models and NETCONF/RESTCONF for programmatic device configuration, state retrieval, and closed-loop assurance.
• Integrate with orchestration platforms (Cisco NSO, Nokia NSP, or open-source equivalents) for automated service lifecycle management.

QoS, OAM & Timing

• Design and implement end-to-end QoS architectures, and scheduling policies from access edge to core.
• Deploy and operate SP OAM tooling: TWAMP, Y.1731, CFM (802.1ag), LSP ping/traceroute, and BFD for sub-50ms failure detection.
• Implement precision timing and synchronisation: IEEE 1588v2 PTP, SyncE, and GPS-disciplined timing for latency-sensitive and utility network applications.

OT & Industrial Telecom

• Support industrial OT telecom systems integrated over SP transport infrastructure.
• Apply network segmentation and security boundary controls between IT and OT domains in line with IEC 62443 and NERC CIP requirements.
• Ensure deterministic connectivity, resilience, and timing compliance for critical infrastructure OT communications.

Technical Leadership & Delivery

• Lead design reviews and architecture drawings for SP network projects.
• Produce high-quality technical deliverables: HLD, LLD, network diagrams, and solution proposals for large-scale SP and critical infrastructure engagements.
• Plan and execute FAT, system integration testing, and site commissioning activities.
• Perform structured root cause analysis (RCA) on major incidents and drive problems to permanent resolution.
• Coordinate with OEM vendors, system integrators, and field engineering teams across distributed project sites.
• Mentor junior and mid-level engineers; develop runbooks, engineering standards, and knowledge-base content for the team.

Experience

• A minimum of 6 years of hands-on experience in Service Provider IP/MPLS networks in a technical engineering or architecture role.
• Proven delivery of large-scale SP backbone, aggregation, and edge network projects from design through to production.
• Multi-vendor deployment experience across at least two of: Cisco IOS-XR, Nokia SR OS, and Huawei VRP.
• Production-proven expertise in at least three of: Seamless MPLS, BGP-LU, SRv6, NG-MVPN, BIER, SR-TE, or BGP-LS.
• Hands-on network automation experience: Python or Ansible scripting for SP tasks, NETCONF/YANG integration, and telemetry pipeline setup.
• Experience working in or alongside OT/industrial telecom environments (utility, oil & gas, power, or transport) is a strong advantage.

Certifications

• CCIE Service Provider — highly preferred.
• Nokia Service Routing Architect (NRS II / SRA) or equivalent Nokia professional certification.
• CCNP Service Provider is the minimum acceptable level if an expert-level certification is not yet held.
• Automation or DevOps certifications (Cisco DevNet, Python PCEP/PCAP) are a welcome addition.

Education

• Bachelor's degree in Computer Science, Telecommunications, or a closely related field.
• Equivalent combination of professional certification and experience will be considered.

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