Senior Enterprise Architect — WAN/Transport

M9 Solutions•Reston, VA

4d•Hybrid

About The Position

M9 Solutions is dedicated to providing IT services and solutions to the Federal Government by mobilizing the right people, skills, clearance levels, and technologies to help organizations who desire improved performance and modern, sustainable change. M9 has provided quality IT services and support to more than 30 Federal Agencies and multiple commercial customers nationwide. Our capabilities include digital transformation, software development, cloud migration, applications & infrastructure, cybersecurity, data delivery & analytics, and IT talent solutions. M9 Solutions is seeking a Senior Enterprise Architect - WAN/Transport to work hybrid remote/onsite in support of a government contract for a client located in Reston, VA . An active TS/SCI clearance is required.

Requirements

Active TS/SCI security clearance.
Work Authorization: US Citizenship is required.
BA/BS and 14 - 17+ years of related experience; OR Master's degree and 13+ years of related experience; OR PhD/JD and 10+ years of related experience.
14+ years progressive WAN/transport engineering, network architecture, or telecommunications experience.
Deep expertise in OTN and ITU-T standards G.709, G.798, G.872.
MPLS/IP, Ethernet, VPN/IPsec overlays, and enterprise/carrier WAN design patterns.
Advanced routing and traffic engineering (BGP, OSPF/ISIS), path control, convergence.
SDWAN and secure connectivity patterns (SASE/SSE), segmentation, and policy design.
QoS design (marking, queuing, shaping), performance engineering (latency/jitter/loss), and capacity planning.
Network security technologies, boundary protections, and Zero Trust networking principles.
Demonstrated ability to create field-ready engineering packages (diagrams, IP plans, BOMs, configuration templates, implementation steps, cutover/rollback, and test/validation).
Excellent technical writing - engineering documentation and briefing technical/non-technical stakeholders.
CONUS/OCONUS travel required.

Responsibilities

WAN/transport design recommendations for mission networks: site connectivity, segmentation, resiliency, performance engineering across classified and unclassified enclaves.
L0 circuit configurations, including CLLI circuit route options across CONUS and OCONUS.
Optimized WAN transport design using Optical Transport Network (OTN) and ITU-T standards G.709, G.798, G.872; plus MPLS/IP, Ethernet, VPN/IPsec, SDWAN, SASE/SSE.
WAN work package deliverables: HLD/LLD, logical/physical diagrams, IP plans, routing/QoS policies, security boundary requirements, BOM/part lists, rack elevations, configuration templates, interface cut sheets.
Methods of Procedure (MOPs), implementation plans, cutover schedules, rollback procedures, and test/validation plans.
Network engineering compliance evidence: configuration baselines, implementations, boundary descriptions, and support.
Tier 3/4 troubleshooting and root cause analysis (routing instability, path asymmetry, MTU, encryption overlays, QoS, and provider impairments).
WAN capacity planning: bandwidth, optical/Carrier Ethernet capacity, routing headroom, power/cooling, and lifecycle/EOL.
L0 circuit delivery/integration/activation coordination, as-built documentation.
ROM estimates and cost models for new sites, routes, and WAN services.