MD-Systems Administrator(Windows) - TS/SCI w/ Polygraph with Security Clearance

SUNAYU; Maryland; On-site; USD 110,000 - 150,000; Full time

Benefits offered by this job

Medical options

Dental & Vision

FSA / DCFSA / HSA

Life/AD&D Insurance

Disability Insurance

EAP

Training & Education Assistance

Paid Time Off

Federal holidays

401k match

Job summary

Sunayu, LLC is seeking a Senior Windows System Administrator to join a high‑performing Agile team operating within SAFe. You will monitor test infrastructure, manage Windows/Linux servers, AD, DNS, GPOs, and perform security and performance optimizations in a VMware environment, with on‑call support.

The ideal candidate has 7+ years of Windows administration and 7+ years in information security management, including IAVA and vulnerability scanning, and holds a related Bachelor's degree with 12+

Qualifications

• 7+ years of Windows administration experience.
• 7+ years of information security management with governance, risk, and compliance expertise.
• 5+ years implementing and managing Windows AD/DNS, GPOs, SCCM, and Exchange administration.
• Proficient with Windows Command Line and PowerShell scripting.
• Strong understanding of security protocols, standards, and information security principles.
• Hands-on experience with IAVA management and security scanning.

Responsibilities

• Monitor test infrastructure systems, applications, and processes to identify, track, and resolve issues.
• Support server, router, and firewall configuration; perform security management and performance optimization of VMware/Windows/Linux environments.
• Provide technical support to partner workgroups and maintain cross‑department collaboration.
• Manage IAVAs and system security scans; ensure vulnerabilities are remediated quickly.
• Respond to on-call issues and communicate outages with status updates to users.
• Author and maintain clear, accurate technical documentation.

Skills

Windows administration

Information security management

PowerShell scripting

Active Directory & DNS

Group Policy Objects (GPOs)

Vulnerability management

IAVA management

VMware

Networking fundamentals

Education

Bachelor’s degree in Computer Science or related field

12 years of relevant experience

Tools

SCCM

Exchange Admin (Exchange Management Shell)

Active Directory management tools

Job description

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. I 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 oncall basis when required. 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.
• Preferred Qualifications
• 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.

Who We Are

Sunayu, LLC serves as a premier technology partner to the Defense and Intelligence communities, delivering mission‑critical engineering solutions across the nation. Our operations are anchored in a commitment to trust, accountability, and ethical transparency, ensuring the high‑performance outcomes necessary to protect our country’s most vital interests.

Culture

Our strength lies in our community: Our team prioritizes collaboration, professional growth, and encourages open communication. At Sunayu, we don’t just secure the mission - we grow together.

Career Development

We support and encourage our team members to continue their professional growth by providing company‑reimbursed training and continuing education of up to $5,000 per year. We also participate in many industry conferences and events where we share our expertise and experiences.

Pay Rate Salary range

Salary range considers factors such as (but not limited to) scope and responsibilities of the position, candidate’s work experience, education/ training, key skills, as well as market and business considerations when extending an offer.

Benefits

• 3 Medical Plan Options
• Dental and Vision
• FSA, DCFSA, HSA
• Life/AD&D Insurance
• Short-Term & Long-Term Disability
• Employee Assistance Program (EAP)
• Training and Educational Assistance
• Paid Time Off (PTO)
• 11 Federal holidays
• 401k plan with up to a 6% match (100% immediate vesting)

Equal Opportunity Employer Sunayu, LLC is an Equal Opportunity/Affirmative Action Employer.

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, gender expression, national origin, age, protected veteran status, disability status, marital status, genetic information, medical condition, or any other characteristic protected by law.