SME Network Engineer

Revolutional delivers advanced technology solutions and mission support to federal agencies across civilian, health, and national security environments. We apply modern capabilities, including AI/ML, cloud, cybersecurity, and IT modernization to solve complex challenges, enable faster and more secure operations, and drive measurable mission outcomes. We are redefining how federal technology gets built and delivered by operating with a product mindset, prioritizing speed, ownership, and execution over bureaucracy. SME Network Engineer Location: Lorton, VA (22079) Citizenship: U.S. Citizen (required for access to DHS IT systems) Clearance: Must be able to obtain and maintain DHS Public Trust Schedule: Full-time; 8-hour workdays with on-call support as needed. Hybrid Work: Lorton, VA roles may telework up to 2 days per week; 3 days onsite required (subject to mission needs) Travel: Occasional CONUS travel; local travel within 50 miles is not reimbursable Salary Range: $130-160k DOE Role Overview Revolutional is seeking an experienced SME Network Engineer to support Department of Homeland Security (DHS). This role provides hands-on leadership across all network engineering functions , including architecture, routing, switching, firewall engineering, VPN and PKI integration, segmentation design, troubleshooting, and IA/accreditation-grade documentation. The SME ensures the integrity, resilience, and performance of mission-critical networks and collaborates closely with Systems, Virtualization, Storage, and Field Engineering teams to ensure end-to-end operational success. This position supports DHS’s mission while contributing to Revolutional's overarching goals: delivering premier technology services, driving mission-focused innovation, sustaining organizational excellence, and being an employer of choice for skilled professionals. Responsibilities Network Architecture & Design Design, document, and maintain network architecture, including: Layer 2/Layer 3 topology IP address schema and subnetting VLAN/VRF segmentation Routing design (OSPF, BGP, EIGRP, static routing) Firewall zoning, NAT policies, and security segmentation VPN tunnels, encrypted transport paths, and PKI integrations COOP/DR network routing and failover paths Produce and maintain authoritative network diagrams, data flows, trust boundaries, and configuration baselines. Evaluate, recommend, and implement enhancements to improve security, availability, and performance. Network Operations & Troubleshooting Serve as the primary network engineer for diagnosing, resolving, and preventing outages across the enterprise. Perform packet-level analysis (Wireshark/tcpdump), flow analysis, and log correlation to identify and remediate issues. Lead network upgrades, configuration changes, ACL/policy adjustments, and planned maintenance. Monitor network performance and availability; tune routing, firewall, and VPN parameters as needed. Firewall, Security & Accreditation Support Engineer and maintain firewall policies and segmentation (Palo Alto preferred; Fortinet/Cisco ASA experience acceptable). Support security hardening, vulnerability remediation, and IA/ATO documentation requirements. Produce accreditation-ready artifacts, including boundary diagrams, data-flow representations, rule documentation, and enclave segmentation maps. Collaborate with ISSO and security teams to address findings and strengthen compliance posture. Interoperability & Cross-Domain Integration Document and support network dependencies across Active Directory, DNS/DHCP, VMware/vSphere, SAN/iSCSI/NFS storage, and application tiers. Validate end-to-end system functionality after network changes. Partner with Systems, Virtualization, Storage, and Field SMEs to maintain seamless operations across sites. COOP/DR & Lab Engineering Contribute to COOP/DR planning, design, and testing to ensure high availability and rapid failover capabilities. Support lab environment setup for replication, patch validation, and network simulation. Documentation & Mission Coordination Maintain technical documentation, diagrams, IP plans, SOPs, and configuration repositories. Coordinate with Revolutional and DHS technical leads to resolve issues, support field operations, and sustain mission readiness. Required Qualifications Bachelor’s degree in IT, Engineering, or related field OR +5 years equivalent experience. 10+ years of enterprise network engineering experience with increasing responsibility. Technical Proficiency Deep hands-on experience with: Cisco routing/switching (3k–9k platforms) Palo Alto or Fortinet firewalls and policy design VPN architecture, IPsec tunneling, PKI integration Network segmentation using VLANs, VRFs, and security zones Packet capture and analysis Network monitoring and telemetry tools (SolarWinds, NetFlow, Splunk, etc.) Demonstrated ability to produce complete network diagrams and architecture documentation based solely on device configuration, logs, and analysis. Strong understanding of cross-domain interactions (DNS, AD, VMware networking, SAN connectivity). Preferred Certifications CCNA, CCNP Enterprise or CCNP Security PCNSE Fortinet NSE4/NSE5 CCIE-level competency (or equivalent expertise) Additional certifications may be required after hire and must be obtained within designated timelines. Professional Competencies Excellent communication skills with both technical and non-technical stakeholders. Proven ability to work independently in high-pressure, mission-critical environments. Strong analytical, investigative, and documentation skills. Preferred Experience Experience supporting federal law enforcement IT systems or aligned mission operations. Hands-on participation in COOP/DR architecture or failover site execution. Experience with VPN transitions, network segmentation, and multi-site resiliency. Familiarity with Kubernetes/container environments (e.g., JSI platforms). Experience supporting 24/7 high-availability operations. Soft Skills Strong initiative and attention to detail. Adaptability to evolving mission requirements and operational tempo. Collaborative approach with technical teams, vendors, and government partners. Alignment with Revolutional's principles of excellence, collaboration, curiosity, and integrity. Physical Demands / Work Environment Must regularly lift/move up to 50 lbs.; occasionally up to 80 lbs. using a hand truck or lift cart. Requires standing, kneeling, crouching, and navigating server-room environments. Normal vision and hearing required; moderate server-room noise. #LI #DICE #CJ ___________________________________________________________________________________________________________ Here at Revolutional we are pleased to have been repeatedly recognized for our outstanding work culture, the innovative work we do, and the employees on our team who make a difference each day. Some of these recognitions include: Recognized as a Top 20 "Best Place to Work in Virginia" Recipient of Department of Labor's HireVets Gold Medallion Great Place to Work Certification for five years running A Virginia Chamber of Commerce Fantastic 50 company A Northern Virginia Technology Council Tech 100 company Inc. 5000 list of fastest growing companies for eleven years Two-time SBA SBIR Tibbett's Award winner Virginia Values Veterans (V3) Certification We recognize that every bit of our success is the result of our teams of hard-working, motivated, and innovative professionals who are proud to call themselves part of the Revolutional family! In addition to competitive compensation, a family-focused culture, and a dynamic, productive work environment, we offer all full-time employees a variety of benefits including, but not limited to Traditional and HSA- eligible medical insurance plans 100% employer-paid dental and vision insurance options 100% employer-sponsored STD, LTD, and life insurance 5% 401(k) company matching Flexible-schedules and teleworking options Paid holidays and PTO Accrual Plans Paid Parental Leave Professional development and career growth opportunities Team and company-wide events, recognition, and appreciation-- and so much more! Check out our Revolutional | LinkedIn to find out a little more about who we are and if we are the rig