Job description

Harmonia Holdings Group is an award-winning, rapidly growing federal government contractor committed to providing innovative, high-performing solutions to our government clients and focused on fostering a workplace that encourages growth, initiative, creativity, and employee satisfaction. Role Overview Harmonia Holdings Group is seeking a highly skilled SME Network & Computer Systems Administrator to support DHS ICE Homeland Security Investigations (HSI) Title III and Linguists Unit (T3LU) under the CALEA program. This role provides technical leadership, advanced systems/network administration, and mission-critical operational support. This position supports DHS’s mission while contributing to Harmonia’s overarching goals: delivering premier technology services, driving mission-focused innovation, sustaining organizational excellence, and being an employer of choice for skilled professionals. Responsibilities • Install, configure, administer, and maintain the CALEA LAN/WAN infrastructure, servers, SANs, and network devices. • Provide technical leadership and supervision of other contractor staff. • Conduct system capacity analysis, planning, and troubleshooting to maintain optimal performance. • Install/update antivirus software and apply security patches to maintain DHS compliance. • Perform hardware replacement (hard drives, memory modules, power supplies, etc.). • Maintain network diagrams, SOPs, and technical documentation in the CALEA repository. • Support certification and accreditation (C&A) activities by applying approved security patches. • Ensure 24/7 system availability, COOP, and rapid restoration during outages. • Liaise with ICE Program Managers and technical leads, providing direct mission support. Required Qualifications • Bachelor’s degree in IT, Engineering, or related field OR +5 years equivalent experience. • 10+ years of enterprise IT systems/network administration experience. • Microsoft Certified Solutions Associate (MCSA), Microsoft Certified Systems Engineer (MCSE + Security), or PMP – preferred (CCNA/CCNP not accepted). Expertise in: • Windows OS and Active Directory (AD) • Linux system administration • VMware virtualization (capacity analysis, installations, patching, troubleshooting) • Storage Area Networks (SAN/RAID) • Excellent communication skills; ability to explain technical issues to non-technical leadership. • Demonstrated ability to work independently in high-pressure, mission-critical environments. Soft Skills • Strong written and verbal communication. • Active listening and collaboration with executive-level stakeholders. • Adaptability to changing mission requirements. • Ability to mentor and lead other administrators. • Commitment to Harmonia’s principles of excellence, collaboration, curiosity, and integrity — and to growing as part of an organization that strives to be an employer of choice. Physical Demands / Work Environment • Must regularly lift/move up to 50 lbs.; occasionally up to 80 lbs. with hand truck/lift cart. • Requires standing, kneeling, crouching, and crawling in server-room environments. • Normal hearing/vision required; moderate server-room noise.

Requirements