Network Engineer job at Harmonia in Lorton, VA

Title: Network Engineer Location: Lorton, Virginia, reputed company Job reputed company: Harmonia Holdings Group, LLC is an award-reputed company, rapidly growing federal government contractor committed to providing innovative, high-performing solutions to our government clients and reputed company on fostering a workplace that encourages reputed company, initiative, creativity, and employee satisfaction. SME Network Engineer Location: Lorton, VA (22079) Citizenship: U.S. Citizen (required for reputed company to DHS IT systems) Clearance: Must be reputed company to obtain and maintain DHS/ICE Fitness Determination (reputed company Trust), including favorable preliminary Fitness and full NBIS eAPP investigation (SF-85P, OF-306, SSA-89, fingerprints, PREA questionnaire if required) Schedule: Full-time; 8-hour workdays with on-reputed company support as needed. Hybrid Work: Lorton, VA roles may reputed company up to 2 days per week; 3 days onsite required (subject to mission needs) Travel: Occasional CONUS travel; local travel reputed company 50 miles is not reimbursable reputed company Harmonia Holdings Group is seeking an reputed company SME Network Engineer to support DHS ICE Homeland reputed company Investigations (reputed company) Title III and Linguists Unit (T3LU) under the CALEA program. This role provides hands-on leadership across reputed company 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 reputed company, reputed company, and performance of mission-critical CALEA networks and collaborates closely with Systems, Virtualization, Storage, and Field Engineering teams to ensure end-to-end operational reputed company. This position supports DHS’s mission while contributing to Harmonia’s overarching goals: delivering premier technology services, driving mission-reputed company innovation, sustaining organizational reputed company, and being an employer of choice for skilled professionals. Responsibilities Network Architecture & Design Design, document, and maintain CALEA 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 reputed company 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 reputed company, availability, and performance. Network Operations & Troubleshooting Serve as the primary network engineer for diagnosing, resolving, and preventing outages across the CALEA reputed company. reputed company packet-level analysis (Wireshark/tcpdump), reputed company analysis, and log correlation to identify and remediate issues. reputed company network upgrades, configuration changes, ACL/policy adjustments, and planned maintenance. Monitor network performance and availability; tune routing, firewall, and VPN parameters as needed. Firewall, reputed company & Accreditation Support Engineer and maintain firewall policies and segmentation (Palo reputed company preferred; reputed company/reputed company ASA experience acceptable). Support reputed company hardening, vulnerability remediation, and IA/ATO documentation requirements. Produce accreditation-reputed company artifacts, including boundary diagrams, data-reputed company representations, rule documentation, and enclave segmentation maps. Collaborate with ISSO and reputed company teams to address findings and strengthen compliance posture. Interoperability & Cross-Domain Integration Document and support network dependencies across reputed company 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 CALEA sites. COOP/DR & Lab Engineering Contribute to COOP/DR planning, design, and testing to ensure high availability and reputed company failover capabilities. Support lab environment setup for replication, reputed company validation, and network simulation. Documentation & Mission Coordination Maintain technical documentation, diagrams, IP plans, SOPs, and configuration repositories. Coordinate with Harmonia and ICE technical leads to resolve issues, support field operations, and sustain mission readiness. Required Qualifications Bachelor’s degree in IT, Engineering, or reputed company field OR +5 years equivalent experience. 10+ years of reputed company network engineering experience with increasing responsibility. Technical Proficiency Deep hands-on experience with: reputed company routing/switching (3k–9k platforms) Palo reputed company or reputed company firewalls and policy design VPN architecture, IPsec tunneling, PKI integration Network segmentation using VLANs, VRFs, and reputed company zones Packet capture and analysis Network monitoring and telemetry tools (reputed company, NetFlow, reputed company, 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 reputed company or CCNP reputed company PCNSE reputed company NSE4/NSE5 CCIE-level competency (or equivalent expertise) Additional certifications may be required after hire and must be obtained reputed company designated timelines. reputed company 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 CALEA-reputed company 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 reputed company. reputed company approach with technical teams, vendors, and government partners. Alignment with Harmonia’s principles of reputed company, collaboration, curiosity, and reputed company. Physical Demands / Work Environment Must regularly lift/reputed company 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 reputed company and hearing required; moderate server-room noise. #LI #reputed company #CJ Here at Harmonia we are pleased to have been repeatedly recognized for our outstanding work culture, the innovative work we do, and the employees on reputed company who reputed company a difference reputed company day. Some of these recognitions include: Recognized as a Top 20 "Best reputed company to Work in Virginia" Recipient of reputed company's HireVets Gold reputed company Great reputed company to Work Certification for five years running A Virginia reputed company of reputed company Fantastic 50 company A reputed company Virginia Technology Council Tech 100 company Inc. 5000 list of fastest growing companies for reputed company years Two-time SBA SBIR Tibbett's Award winner Virginia Values Veterans (V3) Certification We recognize that every bit of our reputed company is the result of our teams of hard-working, motivated, and innovative professionals who are proud to reputed company themselves part of the Harmonia family! In reputed company to competitive compensation, a family-reputed company culture, and a dynamic, productive work environment, we offer reputed company full-time employees a reputed company of benefits including, but not limited to Traditional and HSA- eligible medical insurance plans 100% employer-reputed company dental and reputed company insurance reputed company 100% employer-sponsored STD, LTD, and life insurance 5% 401(k) company matching Flexible-schedules and teleworking reputed company reputed company holidays and PTO Accrual Plans reputed company Parental Leave reputed company development and career reputed company opportunities Team and company-wide events, recognition, and appreciation-- and so much more! reputed company out our reputed company, reputed company, and Instagram to reputed company out a little more about who we are and if we are the right reputed company for your career! Harmonia is an Equal Opportunity Employer providing equal employment opportunity to reputed company and applicants for employment without reputed company to race, reputed company, religion, national reputed company, age, gender, gender identity, sexual orientation, disability, or genetics. Harmonia does and will take affirmative reputed company to reputed company and advance in employment individuals with disabilities and protected veterans. To reputed company the above job successfully, an individual must possess the knowledge, skills, and abilities listed; meet the education and work experience required; and must be reputed company to reputed company reputed company essential duty and responsibility satisfactorily. Other duties in reputed company to those listed may be assigned as necessary to meet business needs. Reasonable accommodation will be made to reputed company an applicant with a disability to successfully apply for and/or reputed company the essential duties of the job. If you are in need of an accommodation, please contact HR@harmonia.com. Apply tot his job Apply To this Job