Senior Systems Engineer - Washington D.C. - Harmonia

    Harmonia
    Harmonia Washington D.C.

    2 weeks ago

    Description

    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.
    Description
    Title: Senior Systems Engineer
    Location: Washington, DC
    Terms: Full-time
    Clearance: Top Secret with SCI eligibility - Required
    Travel: 10%
    About the role
    We are seeking a highly experienced and technically proficient Senior Systems Engineer to manage, optimize, and secure critical enterprise infrastructure at the Dept of State in Washington, DC. The ideal candidate will be a hands-on expert in Windows Server, Active Directory, and virtualization technologies, with a strong focus on automation and cloud adoption. This role requires deep technical troubleshooting skills and the ability to work in a secure, on-site environment.
    What you'll do

    • Own Windows Server/Active Directory (AD) Services (GPO, DNS/DHCP, OU design, patching, monitoring) across production enclaves, ensuring high availability and optimal performance.
    • Design, implement, and manage enterprise virtualization platforms, primarily using VMware ESXi, for maximum efficiency and resource utilization.
    • Automate infrastructure deployment, configuration, and maintenance at scale using PowerShell and other scripting languages (e.g., Python), focusing on IaC (Infrastructure as Code) principles.
    • Architect, deploy, and manage Public Key Infrastructure (PKI) solutions and oversee certificate/TLS lifecycle management across the enterprise.
    • Perform complex, end-to-end troubleshooting of infrastructure issues, covering networking (TCP/IP, routing, load balancing), identity (Kerberos/LDAP), and application integration.
    • Document runbooks, standard operating procedures (SOPs), and change procedures; participate in scheduled change windows and on-call rotation.
    • Contribute to cloud strategy and migration efforts by providing technical expertise for AWS and/or Azure platform integration.
    • Ensure systems adhere to stringent security requirements (e.g., STIG/RMF/NIST), especially within federal or classified environments.
    Required Qualifications
    • Active Top Secret with SCI(active or cross-over-eligible).
    • Bachelor's in computer science, Information Technology, or related field - or equivalent practical experience.
    • 10+ years Server administration
    • Expert-level proficiency in PowerShell for complex administration, reporting, and automation.
    • Extensive experience with virtualization platforms (ESXi, Hyper-V, or KVM), including deployment, maintenance, and performance tuning.
    • Experience with Active Directory in production environments.
    Preferred Qualifications (nice-to-have)
    • Deep understanding of networking fundamentals (TCP/IP, DNS, DHCP, routing protocols) and experience with load balancers (e.g., F5/NetScaler).
    • Proven experience in designing and managing PKI and handling the entire certificate lifecycle.
    • Excellent written and verbal communication skills, with a proven ability to document complex systems.
    • Background in AWS and/or Azure infrastructure, services, and best practices.
    • Familiarity with security compliance frameworks and tools for federal/classified environments (STIG, RMF, NIST).
    • Experience with enterprise monitoring solutions (e.g., SCOM, Splunk, health sets).
    • Exposure to Microsoft 365 (M365) technologies, including Hybrid/M365 touchpoints (e.g., Modern Auth, EOP/Defender).
    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
    • 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 LinkedIn, Facebook, and Instagram to find out a little more about who we are and if we are the right next step for your career
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