Senior Enterprise Architect — WAN/Transport at M9 Solutions · Reston

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. 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. Required Skills and Qualifications 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. Full-Time Employee Compensation M9 Solutions’ pay range for this position is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include, but are not limited to, responsibilities of the position, education, experience, knowledge, skills, abilities, as well as internal equity, location, alignment with market data, applicable bargaining agreement (if any), or other law. M9 Benefits - https://m9solutions.com/why-join-m9/#our-benefits Salary Range $170,000—$191,950 USD M9 Solutions, LLC (M9) is a Federal sub-contractor and we comply with all applicable federal laws prohibiting discrimination in employment, including Title VII of the Civil Rights Act of 1964. We also adhere to the affirmative action requirements of the Vietnam Era Veterans' Readjustment Assistance Act (VEVRAA) and Section 503 of the Rehabilitation Act, ensuring equal opportunity for veterans and individuals with disabilities. Please click here to complete M9's Voluntary Self-Identification Form and then email it to hr@m9solutions.com. If you need accommodation during the application process or encounter difficulties using our website, please contact our Human Resources Department at hr@m9solutions.com or 703-936-0880 M9 Solutions is a proud participant in the Virginia Values Veterans (V3) program and supports the Military Medics and Corpsmen (MMAC) initiative, demonstrating our commitment to hiring and supporting veterans, transitioning service members, military spouses, and dependents. With 15+ years of proven delivery and growth, M9 Solutions is a unique small business with credible past performance and key capabilities offering project management services, solution architects, business analysts, program managers, technical architects, and technical consultants. M9 was recognized as an Inc. 5000 Fastest-Growing Private Companies in 2021, 2020, 2019, 2018, 2017, 2016, and 2012. M9 Solutions believes that work should be fun, rewarding, and something everyone can be excited about. We offer a competitive compensation package and value diverse perspectives in driving the vision of the company.