Senior Network & Infrastructure Architect

About MetronMetron is an employee-owned company dedicated to delivering innovative solutions for the most challenging national security problems. For over 40 years, our principled approach to problem-solving has yielded creative solutions at the intersection of advanced mathematics, computer science, physics, and engineering. Our people are leaders in their technical fields and are passionate about solving challenging problems. We look for individuals who share this same passion and can apply their experience in real-world settings. Job Description: Our Reston, VA office is looking for a Senior Network & Infrastructure Architect to serve as a senior technical authority for enterprise network architecture, disparate secure enclave design, multi-vendor hybrid cloud connectivity, and large-scale infrastructure projects. This is a senior individual contributor role to provide technical leadership across architecture decisions, design reviews, implementation planning, modernization efforts, escalations, and North America operations support. The ideal candidate is a network-first infrastructure architect with deep enterprise & cloud networking experience, broad infrastructure awareness, and the judgment to translate cybersecurity and program requirements into secure, supportable, and maintainable technical solutions. This role partners closely with cybersecurity, systems, network, and program engineering teams to ensure infrastructure designs are scalable, resilient, operationally realistic, and aligned with security requirements. Occasional after-hours/weekend maintenance and emergency response required. Key Responsibilities: Enterprise Network Architecture Lead architecture and design for enterprise LAN, WAN, wireless, data center, and cloud-connected network environments Define future-state network architecture, modernization roadmaps, and technology standards for enterprise and secure environments Define network patterns for high availability, segmentation, Zero Trust-aligned access, resiliency, recoverability, and secure operations Review technical designs to ensure they are supportable, scalable, and aligned with cybersecurity and program requirements Secure Enclave & Classified Infrastructure Lead network and infrastructure architecture for classified, secure, encrypted, compliance-bounded, or air-gapped environments Design secure enclave connectivity patterns, including encrypted links, redundant switching, server connectivity, and storage/network integration Provide architecture guidance for secure environment buildouts, refreshes, and major changes Partner with cybersecurity teams to ensure technical designs satisfy security requirements and authorization expectations Hybrid Cloud & Infrastructure Integration Architect hybrid connectivity between on-premises environments, secure infrastructure, and major cloud platforms such as AWS and Azure Guide cloud networking, DNS, routing, traffic management, logging, telemetry, and infrastructure automation patterns Provide architecture-level input for infrastructure platforms such as HCI, virtualization, Linux infrastructure, backup, storage, and container environments Support data resiliency, disaster recovery and business continuity design for mission-critical infrastructure Technical Leadership, Standards & Escalation Serve as a principal technical authority for complex network, infrastructure, availability, routing, DNS, VPN, and service-impacting issues Develop network and infrastructure standards, reference designs, implementation plans, diagrams, escalation runbooks, and architecture artifacts Provide technical backstopping and mentoring for engineers implementing and operating enterprise and secure infrastructure Coordinate with vendors, carriers, cybersecurity, systems, network, and program teams on major infrastructure initiatives and escalations Onsite Responsibilities Senior enterprise network architecture experience across on-premises, data center, colocation, cloud-connected, or secure environments. Experience supporting secure or isolated environments, including classified, compliance-bounded, encrypted, or air-gapped infrastructure Ability at hire to satisfy DoD 8140 / DCWF 651 Enterprise IT Architect requirements Willing and able to work in classified, secure, or compliance-bounded environments Able to support occasional after-hours and weekend maintenance or emergency response efforts Able to work on-site in Reston, VA Eligible to obtain and maintain a U.S. security clearance Required Qualifications: 10+ years of experience architecting, implementing, or operating enterprise network and infrastructure environments 5+ years of hands-on experience with enterprise networking, including switching, routing, wireless, VPN, DNS, and network security operations Experience with Cisco enterprise networking platforms including Nexus, Catalyst, Firepower, FMC/FTD/ISE, VxLAN, etc. Experience designing or supporting secure, classified, regulated, government, defense, or security-controlled infrastructure Experience with at least one major cloud platform, such as AWS or Azure Experience with hybrid connectivity, cloud networking, Azure and Route 53 DNS, routing, segmentation, or traffic-management concepts Experience supporting directory or identity services such as Active Directory, Entra ID, ADFS, SSO, claims, or attribute mapping Ability at hire to satisfy DoD 8140 / DCWF 651 Enterprise IT Architect requirements, as required by contract or program Ability to create technical documentation, implementation plans, architecture artifacts, escalation runbooks, and design standards Ability to coordinate with vendors, carriers, internal engineering teams, cybersecurity teams, and program stakeholders Preferred Qualifications: Active U.S. security clearance Existing DoD 8140 / DCWF 651 Enterprise IT Architect qualification or equivalent evidence Experience with TACLANE-based network design or encrypted network transport Enclave infrastructure, classified environment, or air-gapped design experience Demonstrated skills and experience with Nutanix or similar HCI infrastructure Experience with enterprise backup, storage, Linux, Kubernetes, or container platform environments Experience with AWS GovCloud, Azure Government, Microsoft GCC High, Oracle Cloud or other government cloud environments In-depth HVAC, power and telecom, infrastructure experience Microsoft 365 administration experience Experience with infrastructure automation, CloudFormation, Lambda, scripting, or infrastructure-as-code Experience with SumoLogic or similar logging and telemetry platforms Experience supporting Azure DevOps build agents, CI/CD infrastructure, or developer platform operations Experience in defense contracting, government programs, CMMC, NIST 800-171, or other compliance-driven environments Position Location: Reston, VA (the selected individual will be expected to work onsite in the Reston, VA office) Perks and Benefits Medical, Dental and Vision Insurance Accompanying FSA and HSA options Additional Voluntary Benefits Paid Time Off 9 Observed Holidays and 2 Floating Holidays Paid Parental Leave Military Leave Tuition Reimbursement Professional Development Reimbursement Annual Salary Reviews Profit Sharing 401(k) Traditional and Roth Options Gym and Fitness Reimbursement Employee Assistance Program Employee Referral Program Metron is an Equal Employment Opportunity (EEO) employer. It is the policy of the company to provide equal employment opportunities to all qualified applicants without regard to race, color, religious, sex, sexual orientation, gender identity, national origin, age, protected veteran or disabled status, or genetic information.VEVRAA Federal Contractor