Harmonia Holdings Group, LLC
Windows System Engineer
Harmonia Holdings Group, LLC, Washington, District of Columbia, us, 20022
Overview
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. Location:
Washington, DC — 100% Onsite Clearance:
Active Top-Secret clearance with SCI eligibility About The Role
Harmonia is building a small, senior team to harden and modernize enterprise Windows/AD infrastructure for a major federal mission. You’ll own core Windows/AD services, automation, and change operations;
messaging/Exchange expertise is a strong plus
and will be leveraged (or developed) as we improve availability and hybrid posture. What You’ll Do
Own Windows Server/AD services (GPO, DNS/DHCP, OU design, patching, monitoring) across production enclaves. Automate at scale with PowerShell; document runbooks and change procedures; participate in change windows/on-call. Troubleshoot complex infrastructure issues end-to-end (networking/TLS/certs/identity). Contribute to Exchange 2016/2019 operations (DAG health checks, CU planning, hybrid touchpoints) in partnership with a messaging SME. Required Qualifications
Active Top-Secret clearance with SCI eligibility required. Bachelor’s in Computer Science, Information Technology, or related field — or equivalent practical experience. 10+ years of Windows Server administration and 4+ years of administering Active Directory in production. Strong grasp of networking fundamentals (TCP/IP, DNS, DHCP, routing) and certificate/TLS management. Proven PowerShell for administration/automation Microsoft Exchange Server 2016 and/or 2019 is preferred, but later version experience is acceptable. Excellent written and verbal communication. Ability to work 100% onsite in Washington, DC; U.S. citizen. Preferred Qualifications (nice-to-have)
Microsoft Exchange 2016/2019 exposure: performance monitoring, CU/patch participation, upgrade planning, and advanced troubleshooting (mail flow, client connectivity, database/index health). Hybrid/M365 touchpoints: HCW, OAuth/Modern Auth, MRS/MRSProxy, and EOP/Defender hygiene. Experience with load balancers (F5/NetScaler), PKI/certificate lifecycle, and enterprise monitoring (SCOM/M365 health sets). Azure background; Microsoft Azure certifications (e.g., AZ-104/AZ-305) preferred. Prior work in federal or classified environments (STIG/RMF/NIST). Benefits
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! EEO Statement
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. If you are in need of an accommodation, please contact HR@harmonia.com.
#J-18808-Ljbffr
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. Location:
Washington, DC — 100% Onsite Clearance:
Active Top-Secret clearance with SCI eligibility About The Role
Harmonia is building a small, senior team to harden and modernize enterprise Windows/AD infrastructure for a major federal mission. You’ll own core Windows/AD services, automation, and change operations;
messaging/Exchange expertise is a strong plus
and will be leveraged (or developed) as we improve availability and hybrid posture. What You’ll Do
Own Windows Server/AD services (GPO, DNS/DHCP, OU design, patching, monitoring) across production enclaves. Automate at scale with PowerShell; document runbooks and change procedures; participate in change windows/on-call. Troubleshoot complex infrastructure issues end-to-end (networking/TLS/certs/identity). Contribute to Exchange 2016/2019 operations (DAG health checks, CU planning, hybrid touchpoints) in partnership with a messaging SME. Required Qualifications
Active Top-Secret clearance with SCI eligibility required. Bachelor’s in Computer Science, Information Technology, or related field — or equivalent practical experience. 10+ years of Windows Server administration and 4+ years of administering Active Directory in production. Strong grasp of networking fundamentals (TCP/IP, DNS, DHCP, routing) and certificate/TLS management. Proven PowerShell for administration/automation Microsoft Exchange Server 2016 and/or 2019 is preferred, but later version experience is acceptable. Excellent written and verbal communication. Ability to work 100% onsite in Washington, DC; U.S. citizen. Preferred Qualifications (nice-to-have)
Microsoft Exchange 2016/2019 exposure: performance monitoring, CU/patch participation, upgrade planning, and advanced troubleshooting (mail flow, client connectivity, database/index health). Hybrid/M365 touchpoints: HCW, OAuth/Modern Auth, MRS/MRSProxy, and EOP/Defender hygiene. Experience with load balancers (F5/NetScaler), PKI/certificate lifecycle, and enterprise monitoring (SCOM/M365 health sets). Azure background; Microsoft Azure certifications (e.g., AZ-104/AZ-305) preferred. Prior work in federal or classified environments (STIG/RMF/NIST). Benefits
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! EEO Statement
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. If you are in need of an accommodation, please contact HR@harmonia.com.
#J-18808-Ljbffr