Principal Engineer: Core Network & Ethernet, Remote

Hamilton Barnes Associates Limited; Town of Texas (WI); Hybrid; USD 123,000 - 167,000; Full time

Benefits offered by this job

Medical cover

Remote flexibility

9% Bonus

Job summary

Hamilton Barnes Associates Limited is seeking a Principal Engineer to own the core network architecture and Ethernet service delivery, guiding feasibility and capacity planning across core, aggregation, and XGS-PON access networks.

You will serve as the senior technical authority, rebuilding network planning capability and driving scalable, carrier-grade designs for enterprise, wholesale, and mobility transport.

Qualifications

• 10+ years in core network architecture, Ethernet services or telecom network engineering.
• Strong fundamental network planning, capacity modelling, network architecture, network design.
• Deep Layer 2 / Layer 3 networking and Ethernet service design.
• Optical transport expertise, coherent optics, ER/ZR, DWDM.
• Experience integrating PON access with core network architecture.
• Carrier-scale telecom background.
• Proven as a senior individual contributor able to operate independently from day one, with no extended ramp-up.

Responsibilities

• Define and own core architecture supporting Ethernet services, aggregation, transport and service edge.
• Standardize Ethernet service delivery models: port-based and VLAN-based services, service multiplexing, segmentation and handoff.
• Architect high-capacity optical transport, coherent optics, ER/ZR, backbone interconnects.
• Ensure scalability for enterprise, wholesale and mobility transport (backhaul, fronthaul, midhaul).
• Build capacity forecasting models across core, aggregation and access, OLT, transport and backbone requirements, plus market-level growth scenarios.
• Use telemetry, planning system data and build forecasts to improve capacity decision accuracy.
• Automate capacity management workflows to reduce manual planning cycles.
• Identify congestion risk, overbuild and underutilization, and the optimal timing for augmentation and capital deployment.
• Work with data and IT teams to embed planning models into systems (GIS, Vitruvi, ServiceNow, data platforms)

Skills

Core network architecture

Ethernet services

Network planning

Capacity modelling

Layer 2/3 networking

Optical transport

PON integration

Independent contributor

Job description

Hamilton Barnes Associates Limited is seeking a Principal Engineer to own the core network architecture and Ethernet service delivery, guiding feasibility and capacity planning across core, aggregation, and XGS-PON access networks.

You will serve as the senior technical authority, rebuilding network planning capability and driving scalable, carrier-grade designs for enterprise, wholesale, and mobility transport.