Senior Windows Server Systems Administrator

Role Summary

Systems Administrator IV / Senior Windows Server Systems Administrator. This role supports Windows Server, Active Directory, DNS, Certificate Authorities, authentication services, and related infrastructure in a 100% remote environment.

Position Type: 100% Remote.

Schedule: Standard hours, typically 8:00 AM–4:00 PM ET, with some on-call as needed

Key Responsibilities

• Configure and troubleshoot Windows Server operating systems in support of Active Directory, DNS, and Certificate Authorities.
• Manage and maintain Active Directory systems, DNS, Certificate Authority, Certificate Management, and authentication services including ADFS, SAML, SSO, and OKTA.
• Apply STIG and VPR adjustments as required.
• Manage the certificate environment to ensure certificates are issued on time and installed with no outage.
• Develop PowerShell scripts to monitor and check the health of Active Directory, DNS, and Certificate Authorities.
• Design, develop, and support scalable, redundant infrastructure across physical, virtualized, and cloud environments.
• Install, configure, and manage a Windows-based certificate authority server.
• Install, configure, and maintain group management policies, including role-based management.
• Set up administrator and service accounts, maintain system documentation, tune system performance, and install system-wide software.
• Apply NIST and DISA security controls and security hardening changes based on best practices.
• Validate and implement critical system patches and allocate directory storage space.
• Collaborate with engineering teams and system owners to influence design and architect solutions in multi-tiered environments.
• Manage individual project priorities, deliverables, and deadlines.
• Produce clear documentation for delivered solutions.
• Support ticket flow through ServiceNow and participate in daily Teams meetings.

Required Technical Skills

• Active Directory
• DNS
• Certificate Management

Interested in remote work opportunities in IT & Network Engineering? Discover IT & Network Engineering Remote Jobs featuring exclusive positions from top companies that offer flexible work arrangements.

• ADFS
• Windows Server administration
• PowerShell scripting
• Directory services, including Microsoft Active Directory and Entra ID/Azure AD
• Certificate Administration and DNS
• Tier II and Tier III Windows support for Windows OS
• Authentication services, including ADFS, OKTA, or other authentication services
• Certificate authorities such as Microsoft, Digicert, Entrust/Sectigo, and SSL.com
• DevOps tools
• Workflow orchestration at predefined times, including workflows with data dependencies
• NIST and DISA security controls
• STIG and VPR adjustments

Preferred / Nice-to-Have Skills

• Authentication tools, including Okta and ADFS
• Varied IT experience, including Network and TCP
• Experience establishing large computer clusters
• Continuous configuration automation methods
• Cloud-based technologies including Entra and AWS
• Integrating Windows services such as AD and ADFS in a cloud architecture
• Networking including TCP/UDP, ICMP, DNS, infrastructure services, and security
• CompTIA Security+
• Microsoft Certified Professional
• Government contracting experience, particularly with the DOJ
• DOJ or DOD Clearance

Qualifications & Experience

• Bachelor’s degree in Computer Science, Systems Engineering, or a related technical field, or equivalent experience.
• 8+ years of systems engineering or administration experience, or 6+ years with a MS/MIS degree.
• Typically requires a Bachelor’s degree with 8–12 years of prior relevant experience, or a Master’s degree with 6–10 years of prior relevant experience.
• Additional years of experience and/or relevant certifications will be considered in lieu of degree.
• 5 years of experience with Directory services, Certificate Administration, and DNS.
• 4 years of experience providing Tier II and Tier III Windows support for Windows OS.
• 3 years of experience with ADFS, OKTA, or other Authentication services.
• 3 years of patching servers, backups, and permission management.
• 4 years of experience in an operations role.
• Public Trust clearance is required before start.
• Candidate cannot start until the customer grants the required security clearance.
• Ability to work well without constant supervision.
• Ability to express complex technical concepts effectively, both verbally and in writing.
• Ability to change gears quickly.
• Willingness to work on-call as needed in addition to regular business hours.t.

Benefits (employee contribution):

• Health insurance
• Health savings account
• Dental insurance
• Vision insurance
• Flexible spending accounts
• Life insurance
• Retirement plan

All qualified applicants will receive consideration for employment without regard to age, race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran. Rate of pay within the stated range will depend on the qualification of the applicant.