System Administrator 3

M.C. Dean, Inc.; Charleston (SC); On-site; USD 90,000 - 140,000; Full time

Benefits offered by this job

Medical, dental, vision, life, and ADI

401k retirement plan

Paid time off

Tuition reimbursement

Job summary

M.C. Dean, Inc. is hiring for a skilled IT Systems Administrator to join our team in Charleston. This role focuses on Windows server and desktop administration, Active Directory, patching, and security compliance across enterprise IT infrastructure.

You will work on VDI platforms, LAN/WAN networking, and storage systems while collaborating with multidisciplinary teams to deliver reliable, secure technology solutions for mission-critical facilities.

Qualifications

• Requires system administrator experience in triage, resolution, data analysis, and deployment of workstations.
• Experience in programming/administrating Physical Access Control Systems (PACS).
• Knowledge of Windows Active Directory hierarchy and implementation.
• Familiarity with large-scale networking, VLANs, and routing.

Responsibilities

• Configure and manage Windows operating systems and imaging software.
• Manage desktop hardware setup and antivirus updates.
• Analyze security system infrastructure performance and recommend improvements.
• Perform routine patching and vulnerability remediation to meet IA standards.
• Maintain and monitor Active Directory and group policy configurations.
• Support VDI platforms (Citrix Xen Desktop) and virtualized environments.

Skills

Windows patching

Vulnerability remediation

Active Directory

Team leadership

Security+ CASP CISSP (certifications)

Education

Bachelor's Degree in related field

Associates Degree

HS Diploma or Equivalent

Tools

VMware

Hypervisor

Citrix Xen Desktop

Dell EqualLogic

Dell Powervault

Job description

Overview

About M.C. Dean

M.C. Dean is Building Intelligence® We design, build, operate, and maintain cyber-physical solutions for the nation’s most mission‑critical facilities, secure environments, complex infrastructure, and global enterprises. With over 9,000 employees, our capabilities span electrical, electronic security, telecommunications, life safety, automation and controls, audiovisual, and IT systems. Headquarters in Tysons, Virginia, M.C. Dean delivers resilient, secure, and innovative power and technology solutions through engineering expertise and smart systems integration.

Why Join Us?

Our people are passionate about engineering innovation that improves lives and drives impactful change. Guided by our core values—agility, expertise, and trust,we foster a collaborative and forward-thinking work environment. At M.C. Dean, we are committed to building the next generation of technical leaders in electrical, engineering, and cybersecurity industries.

Responsibilities

Main responsibilities include but are not limited to:

• Configure and manage Windows operating systems and install/load operating system software.
• Perform desktop hardware and operating system set‑up, imaging software loading, and antivirus updates.
• Analyze security system infrastructure performance and recommend improvements.
• Troubleshoot, maintain integrity and configure components along with implementing operating systems enhancements to improve reliability and performance.
• Provide detailed analysis and feedback to agency management and internal customers for escalated tickets.
• Perform IAVA updates and patching to ensure compliance with Information Assurance (IA) standards.
• Apply Security Technical Implementation Guides (STIGs) to Windows based operating systems (servers and workstations).
• Implement and maintain sophisticated enterprise Windows Active Directory Architectures.
• Perform daily operations to include Active Directory management, monitoring and reviewing system logs.
• Configure and maintain virtual hypervisors to include VMware and Hypervisor.
• Deploy, configure, and maintain Virtual Desktop Infrastructure (VDI) platforms to include Citrix Xen Desktop.
• Install, configure, and maintain 3rd party applications.
• Install, configure and maintain highly available SQL database Engines.
• Deploy and maintain storage platforms similar to Dell EqualLogic and Dell Powervault.
• Analyze requirements of future deployments and make recommendations for IT infrastructure including all hardware and software required fulfill those requirements.
• Perform root cause analysis on significant issues across all tiers of support.
• Perform preventive maintenance actions including system back‑ups, error log reviews, database size analysis, and integrity checks.
• Develop new system and application implementation plans to include testing procedures and ensuring operational reliability.
• Stay current with technological developments and make recommendations for ways to take advantage of new and emerging technology.
• Create technical documentation such as standard operating procedures (SOP) and as builds for both technical and non‑technical audiences.
• Train system users and other system support personnel as needed.
• Perform all duties with minimal direct supervision.

Qualifications

Clearance Requirement: Applicants selected will be subject to a government security investigation and may meet eligibility requirements, including U.S. Citizenship, for access to classified information; Ability to obtain and maintain a Top-Secret clearance.

Education/Experience:

• Bachelor's Degree and 5+ Years of progressive experience or
• Associates Degree and 8+ Years of progressive experience or
• HS Diploma or Equivalent and 10+ Years of progressive experience
• Requires system administrator experience in performing triage on system problems, resolving the system problems, analyzing system data to prevent problems, implementing new workstations, and system extensions.
• Requires 5 + years of experience programming/administrating Physical Access Control Systems.
• Demonstrated previous experience effectively managing small teams.
• Demonstrated understanding of Windows patching and vulnerability remediation.
• Demonstrated advanced knowledge of Windows active directory hierarchy and implementation.
• Basic knowledge of large-scale networking, VLANS and routing.
• Requires reliable attendance at customer site during work hours required by customer.
• Requires the ability to work flexible shifts that include nights, weekends, holidays and on call as needed.
• Requires minimum of Security + Certification, CASP, or CISSP certification.
• Demonstrated background working with multidisciplinary teams.
• Demonstrated time management and organization skills to meet deadlines and quality objectives.
• Proficient in MS Excel, Word, Visio, and PowerPoint.

Travel

• Up to 25% annual, CONUS and OCONUS locations.

What we offer:

• A collaborative team inspired by the way engineering and innovation enhance customer outcomes, improve lives, and change the world for the better. We are driven by our core values of agility, expertise, and trust.
• An opportunity to lead and build a business with the support of an industry-leading firm that has been in business for 75 years.
• Investment in your skills and expertise through a combination of professional and technical training programs, including leadership training and tuition reimbursement.
• Open and transparent communication with senior leadership as well as local office management.

We offer an excellent benefits package including:

• A competitive salary
• Medical, dental, vision, life, and disability insurance
• Paid time off
• Tuition reimbursement
• 401k Retirement Plan
• Military Reserve pay offset
• Paid maternity leave

Abilities

• Exposure to computer screens for an extended period of time.
• Sitting for extended periods of time.
• Reach by extending hands or arms in any direction.
• Have finger dexterity in order to manipulate objects with fingers rather than whole hands or arms, for example, using a keyboard.
• Listen to and understand information and ideas presented through spoken words and sentences.
• Communicate information and ideas in speaking so others will understand.
• Read and understand information and ideas presented in writing.
• Apply general rules to specific problems to produce answers that make sense.
• Identify and understand the speech of another person.