New

Network and Computer Systems Administrator SME

Harmonia Holdings Group LLC
medical insurance, life insurance, vision insurance, parental leave, paid time off, paid holidays, 401(k)
United States, Virginia, Lorton
Sep 14, 2025
Harmonia Holdings Group, LLC 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 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. ___________________________________________________________________________________________________________ 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 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 Harmonia 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 w/ Wellness Incentives for employees and family 100% employer-paid dental and vision insurance options 100% employer-sponsored STD, LTD, and life insurance Veterans Cohort Gym membership reimbursement 401(k) matching Dollar-for-dollar 501(c)(3) donation matching Flexible-schedules and teleworking options Paid holidays and Flexible Paid Time Off Adoption Expense Reimbursement Paid Parental Leave Professional development and career growth opportunities and paid training days Employer-sponsored Employee Assistance Program for employee and family Team and company-wide events, recognition, and appreciation-- and so much more! Check out ourLinkedIn,Facebook, andInstagramto find out a little more about who we are and if we are the right next step for your career! Harmonia is an Equal Opportunity Employer providing equal employment opportunity to all employees and applicants for employment without regard to race, color, religion, national origin, age, gender, gender identity, sexual orientation, disability, or genetics.Harmonia does and will take affirmative action to employ and advance in employment individuals with disabilities and protected veterans.To perform the above job successfully, an individual must possess the knowledge, skills, and abilities listed; meet the education and work experience required; and must be able to perform each essential duty and responsibility satisfactorily. Other duties in addition to those listed may be assigned as necessary to meet business needs. Reasonable accommodation will be made to enable an applicant with a disability to successfully apply for and/or perform the essential duties of the job. If you are in need of an accommodation, please contactHR@harmonia.com.