Senior Windows System Administrator

belaytechnologies; Maryland; On-site; USD 164,000 - 200,000; Full time

Benefits offered by this job

Paid leave

401(k) matching

Tuition reimbursement

Student loan repayment

HSA funded

Medical coverage

Dental coverage

Job summary

Belay Technologies is seeking a Senior Windows System Administrator to join an Agile SAFe team supporting a complex program. You will perform daily systems administration across VMware hosts and Windows/Linux guests, with on‑call duties and a focus on security and performance.

The role requires managing AD, DNS, GPOs, SCCM, Exchange, and delivering patching, vulnerability remediation, and IAVA actions in a DoD-aligned environment. Located in Maryland, strong teamwork is essential.

Qualifications

• Bachelor's degree in Computer Science, IT, or related field with 12 years of relevant experience.
• Experience documenting and supporting security accreditation and certification activities.
• Experience with network security technologies, PKI, SSPs, and vulnerability assessments.
• Experience with data center design and configuration, including rack & stack, power planning, and equipment placement.
• Experience with VMware.
• Experience with Windows and Linux operating systems, networking incl. switches/routers.

Responsibilities

• Monitor test infrastructure systems, applications, and processes to identify and resolve issues.
• Support server/router/firewall configuration and security management; optimize performance.
• Manage IAVA responses, system security scans, and patch deployments.
• Produce and maintain clear documentation and handle user communications.
• Provide on-call support for system administration, O&M tasks, and IT enhancements.
• Collaborate with partner workgroups and maintain interdepartmental cooperation.

Skills

Windows administration

Information security governance

Active Directory & DNS

Group Policy

PowerShell

IAVA management

VMware

Automation tools

System administration

Network knowledge

Education

Bachelor's degree in Computer Science/IT or related field

Tools

VMware

SCCM

Exchange

Ansible

SaltStack

Job description

Belay Technologies has been voted Baltimore Business Journal's (BBJ) Best Places to Work 2026!

Belay Technologies is seeking a Senior Windows System Administrator to join a high-performing Agile team operating within the Scaled Agile Framework (SAFe) in support of a complex, fast-paced program. In this role, the selected candidate will provide daily systems administration and operations and maintenance support across multiple systems with a broad geographic footprint. Key responsibilities include responding to system engineering requests that support operational requirements, as well as engineering, deploying, and sustaining new capabilities within the environment.

Primary Responsibilities

The selected candidate will be responsible for monitoring test infrastructure systems, applications, and processes to ensure issues are identified, tracked, and resolved in a timely manner. This role also includes supporting server, router, and firewall configuration, as well as performing security management and application performance optimization activities in an environment made up of VMware server hosts, Windows and Linux guest servers, and Virtual Desktop Infrastructure (VDI). Additional responsibilities include:

• Maintaining multiple virtual server clusters and addressing system scan findings, vulnerability management patching, and Active Directory configuration issues.
• Using enterprise monitoring tools to detect, assess, and respond to alerts.
• Providing technical support to partner workgroups on overlapping efforts while maintaining strong interdepartmental collaboration.
• Managing Information Assurance Vulnerability Alerts (IAVAs) and system security scanning in accordance with applicable System Security Plans, ensuring vulnerabilities are identified and remediated quickly and accurately.
• Initiating IAVA responses and system security scans, completing remediation actions, deploying patches and security updates to designated sites, and executing monthly security scans.
• Identifying and resolving hardware and software problems.
• Proactively notifying customers when test infrastructure delays may affect their ability to complete business functions on time and communicating system outages and publishing status updates to users, as needed.
• Authoring and maintaining clear, accurate, and concise documentation.
• Responding to calls and emails in a timely and professional manner.
• Planning and implementing IT enhancements and supporting project-related work.
• Responding to system administration, operations, and maintenance issues on an on‑call basis when required.

Candidates should have the following qualifications

• TS/SCI Clearance with polygraph (within the last six (6) years)
• Bachelor's degree in Computer Science, Information Technology, or a related technical field and 12 years of prior relevant experience.
• Experience documenting and supporting security accreditation and certification activities.
• Experience with network security technologies, including multi-domain solutions, PKI, SSPs, and vulnerability assessments.
• Experience with data center design and configuration, including rack‑and‑stack, power planning, and equipment placement.
• Experience with VMware.
• Experience using automation tools such as Ansible or SaltStack.
• Experience serving in a System Administrator role supporting software configuration management and development environments.

Basic Qualifications

• Must have at least 7 years of Windows administration experience.
• Must have at least 7 years of experience in information security management, with demonstrated expertise in security governance, risk management, compliance, and operational security functions.
• Must have at least 5 years of experience with each of the following:
  • Implementing and managing Windows Active Directory and DNS environments
  • Creating and managing Group Policy Objects (GPOs)
  • Microsoft SCCM
  • Microsoft Exchange administration and Exchange Management Shell

• Must have experience with Windows Command Line, PowerShell, and PowerShell scripting.
• Strong understanding of advanced security protocols, standards, and information security principles is a must.
• Experience with software and security architectures.
• Hands‑on experience with IAVA management.
• Hands‑on experience supporting users, optimizing system operations, and monitoring enterprise IT systems.
• Commitment to best practices, including compliance with maintenance windows and change control procedures.
• Familiarity with Windows and Linux operating systems, VMware, and networking technologies including switches, routers, LANs, and cabling.
• Must have strong analytical skills, attention to detail, and the ability to work effectively both independently and as part of a team.

Perks and Benefits

• 8 weeks paid leave - 4 weeks of personal leave, 3 Yay! days, take off on your birthday,11 paid holidays and optional leave up to 6 days through Belay's volunteer program
• 10% matching in 401(k) contributions vested on day one
• $5,000 annual training/tuition
• Student Loan Repayment Program
• 100% company‑funded HSA
• Rich medical coverage (100% coinsurance)
• Dental coverage including orthodontia
• Up to $420,000 in life insurance, premiums 100% company funded
• Amazon Prime, gym reimbursement, monthly lunches, games and prizes
• Pet adoption program, generous referral bonus program, fun events, and more!

At Belay, we are committed to creating an environment where you can thrive both professionally and personally. We believe in transparency and fairness in compensation. Several factors influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, education, specific skills and competencies and certifications. Belay offers a competitive total compensation package that includes benefits and perks, a flexible work‑life balance, and career development.

Salary Range: $164,000 to $200,000

Belay Technologies is a certified Service-Disabled Veteran-Owned Small Business located in Columbia, Maryland (Baltimore/Washington area). Belay Technologies specializes in systems automation and full stack development. Belay Technologies provides leading technology and engineering solutions to the DoD, as well as state‑of‑the‑art commercial products. We hire software engineers, web designers, test engineers, systems engineers, systems administrators, database engineers and other tech services. We are an Equal Opportunity Employer. Employment decisions are made without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, physical or mental disability, genetic factors, military/veteran status or other characteristics protected by law.