Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

System Administrator 3 - Tysons, VA

Mc Dean Inc

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.

We are seeking a System Administrator 3 to join our Security and Electronic Systems (SES) business Unit. As part of (SES) Strategic Business Unit you will be part of a team that designs, engineers, integrates, operates and maintains electronic security services inclusive of intrusion detection, access control, biometric authentication, video surveillance, audio visual, it systems, perimeter defense and command and control systems for federal, local and commercial customers across high-growth markets.

Responsibilities

What you’ll do: In this role you will be working as part of a team to monitor, maintain, and test Physical Access Control, CCTV, PSIM and other electronic security systems and support implementation, troubleshooting and maintenance of Information Technology (IT) systems in support of the endpoint devices. The position provides Tier 2 (Escalation) problem identification, diagnosis and resolution of problems and supports the escalation and communication of status to agency management and internal customers.

This position requires onsite support at a single work location in the Washington D.C. area. Candidates must be flexible in schedule, have the ability to travel, and be able to communicate professionally with customers and coworkers. Punctuality, attendance, a willingness to learn, and an ability to work well with others are key to success in this role.

Essential responsibilities and activities include but are not limited to:

  • Manage physical security system support calls to meet service level agreements

  • Analyze physical security system performance and recommend improvements

  • Program and coordinate the installation of new physical security systems across multiple teams and locations.

  • Working knowledge of engineering building drawings and engineering programming sheets for physical security IDS devices in the construction/security industry.

  • Maintain detailed documentation on all system modifications completed through ticketing system.

  • Resolve complex system issues for physical security systems and networks

  • Strong verbal and written communication skills for customer correspondence, documenting and following sequence of operations (SOP), and Outage documentation.

  • Triage end user and maintenance support calls, providing Tier 2 escalation as needed

  • Communicate with customers, manufacturers, vendors, technicians, and technical specialists

  • Train system users and other system support personnel as needed

  • Analyze and modify preventive maintenance checklists for system changes

  • Troubleshoot system performance issues and implement corrective actions

  • Perform preventive maintenance actions including system back-ups, error log reviews, database size analysis, and integrity checks

  • Organize and prepare detailed documentation of system performance, including service request records, and analysis

  • Perform desktop hardware and operating system set-up, imaging software loading, and antivirus updates

  • Support cybersecurity continuous monitoring activities such as implementation of Server and Workstation patching and STIG remediation

  • Perform all duties with minimal direct supervision

Qualifications

Clearance/Citizen Type: Applicants selected will be subject to a government security investigation and must meet eligibility requirements, including U.S. Citizenship, for access to classified information; Ability to obtain a Public Trust is REQUIRED

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 at least one access control system certification from major, enterprise level OEM vendor

  • 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 and holidays as needed.

  • Requires the ability to obtain a 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.

Highly Desired:

  • Experience in the daily system administration, configuration, troubleshooting, and support of JCI P2000.

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.

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.

Vacancy posted 1 day ago
Similar jobs that could be interesting for youBased on the System Administrator 3 - Tysons, VA in McLean, VA vacancy
  •  ...life safety, automation and controls, audiovisual, and IT systems. Headquarters in Tysons, Virginia, M.C. Dean delivers resilient, secure, and...  ...M.C. Dean is seeking a highly competent Network Administrator 3 to assist on the design and maintenance of its network... 
    Suggested

    M.C. Dean, Inc.

    McLean, VA
    1 day ago
  •  ...life safety, automation and controls, audiovisual, and IT systems. Headquarters in Tysons, Virginia, M.C. Dean delivers resilient, secure, and...  ...cybersecurity industries. We are seeking a SaaS System Administrator (System Administrator 1) to join our Security and... 
    Suggested
    Work at office
    Local area

    M.C. Dean, Inc.

    McLean, VA
    3 days ago
  •  ...Systems Administrator 3 Engineering Tysons, Virginia Direct Hire Jun 9, 2026 Job Title: Systems Administrator Location: Fort Belvoir, VA Salary: 100-150k TS/SCI clearance required Responsibilities: Troubleshoot, maintain integrity and configure components... 
    Suggested
    Permanent employment
    Contract work
    Work experience placement

    NSC Staffing

    McLean, VA
    4 days ago
  •  ...intelligence, counter unmanned aerial systems and cyber security. TechINT...  ...join our team in Langley AFB, VA. Job# TI1336 **...  ...tickets • Provides system administration for CICS and the LBS SW components...  ...Experience 3+ yrs of COMINT 3+ yrs of... 
    Suggested
    Full time
    For contractors
    Work experience placement

    TechINT Solutions Group, LLC

    McLean, VA
    1 day ago
  •  ...life safety, automation and controls, audiovisual, and IT systems. Headquarters in Tysons, Virginia, M.C. Dean delivers resilient, secure, and...  ...Microsoft Windows Server 2016 and 2019 Deployment and Administration Microsoft Windows 10 Deployment and Administration DNS,... 
    Suggested
    Work at office
    Local area
    Flexible hours

    M.C. Dean, Inc.

    McLean, VA
    10 days ago
  •  ...operational intelligence, counter unmanned aerial systems and cyber security. TechINT Solutions...  ...System SW sensors • Provide system administration for High Band System SW components GCP...  ...Security Clearance Experience 3+ yrs of Cyber Security Engineering... 
    Full time
    For contractors
    Work experience placement

    TechINT Solutions Group, LLC

    McLean, VA
    1 day ago
  •  ...for this position with your updated resume , best time and number to reach you out. Job Title : System Administrator Senior Location: Mclean, VA (Hybrid) Duration : 6+ Months Experience: 10+ years Must Haves : Must haves include... 

    Navtech

    McLean, VA
    1 day ago
  •  ...This position is onsite at our office in Tysons, VA with a varied shift schedule (days/...  ...per week. We are looking for a NOC Systems Administrator who thrives in a culture of autonomy and...  ...match benefit up to 10%, with an automatic 3% safe harbor contribution and... 
    Work at office
    10 hours per week
    Flexible hours
    Shift work
    Night shift
    Afternoon shift

    Veilant

    McLean, VA
    2 days ago
  • $100k

     ...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... 
    Contract work

    M.C. Dean, Inc.

    McLean, VA
    1 day ago
  •  ...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... 
    Contract work
    For subcontractor

    M.C. Dean, Inc.

    McLean, VA
    1 day ago
  •  ...System Administrator The System Administrator provides system administration for all systems and...  ...Bachelor's Degree in IT related degree with 3 years of experience Demonstrated...  ...Integral is headquartered in McLean, VA and serves clients throughout the country... 
    Temporary work
    Immediate start
    Flexible hours

    Integral Federal

    McLean, VA
    1 day ago
  •  ...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... 
    For subcontractor

    M.C. Dean, Inc.

    McLean, VA
    2 days ago
  •  ...Position Description & Qualifications Serco seeks a Cyber Systems Administrator for its Combat Air Force Distributed Mission Operations (CAF DMO) 3.0 program in Hampton, VA. The CAF DMO 3.0 program, via its Distributed Mission Operations Network (DMON), provides world... 
    Full time
    Contract work
    Part time
    Local area
    Flexible hours

    Serco

    McLean, VA
    1 day ago
  • $185k - $265k

     ...Senior System Administrator (Windows) Location: McLean, VA (transitioning to Chantilly, VA) Clearance Required: Active TS/SCI with CI Polygraph Salary Range: $185,000 – $265,000 Travel: Up to 20% Overview We are seeking a highly skilled Senior System... 
    Full time
    Temporary work
    Immediate start

    PGTEK

    McLean, VA
    1 day ago
  •  ...Systems Engineers L1-6 Tysons Corner, VA Join our team at Core One! Our mission is to be at the forefront of devising analytical, operational and technical...  ...specific skill will be considered equivalent to three (3) years specialized experience (total equivalency is not... 
    For contractors

    Core One

    McLean, VA
    8 days ago
  •  ...Senior Systems Engineer Tysons Corner, VA Senior Systems Engineer, #1058 Clearance: U.S. Citizenship is required. Must be able to obtain a public trust clearance. On site in Tysons Corner, VA 3 days per week Dev Technology Group is looking for a Senior Systems... 
    Remote work
    Flexible hours
    3 days per week

    Dev Technology

    McLean, VA
    2 days ago
  •  ...Linux / Unix Systems Administrator LOCATION Tysons, VA 22182 CLEARANCE TS/SCI Full Poly (Please note this position requires full U.S. Citizenship) KEY SUMMARY We are seeking a dedicated and detail-oriented Linux / Unix Systems Administrator to join our team and... 
    Temporary work
    For contractors
    Immediate start
    Flexible hours

    Cymertek

    McLean, VA
    3 days ago
  •  ...Masonbyte is seeking to fill a System Administrator position for our customer in McLean, VA . At Masonbyte, we strive to provide the next generation of cutting-edge technologies. Our growth means exciting career opportunities for talented professionals in engineering... 
    Permanent employment

    iQuasar

    McLean, VA
    2 days ago
  •  ...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... 
    Work at office
    Local area

    M.C. Dean, Inc.

    McLean, VA
    1 day ago
  • $107.9k - $195.05k

     ...Leidos is looking to add a Senior Linux System Administrator . Our mission is to develop tools for...  ...required to work on-site in our Alexandria, VA office. Primary Responsibilities:...  ...will remain open for at least 3 days with an anticipated close date of... 
    Work at office
    Local area
    Immediate start

    Leidos

    McLean, VA
    2 hours ago
  •  ...with the most talented software developers, systems engineers, and subject matter experts,...  ...Description We are looking for a motivated System Administrator with strong Linux experience to provide...  ...benefit up to 10%, with an automatic 3% safe harbor contribution and additional... 
    Work at office
    Remote work
    Flexible hours
    Night shift

    Veilant

    McLean, VA
    11 hours ago
  •  ...Job Title: Cyber Systems Administrator – Level 2 Location: Langley AFB, VA Program: DMON Program Employment Type:  Full-Time, On-Site Clearance: Active DoD Secret Clearance with ability to obtain TS/SCI and SAP/SAR Program Overview Air Combat Command... 
    Full time

    MILVETS

    McLean, VA
    4 days ago
  • $150k - $170k

     ...individuals to join our team in Tysons Corner, VA (DC Metro area). The...  ...exchange and clearing house. The systems you build and operate...  ...+ years hands-on PostgreSQL administration in production environments—not...  ...Stage 2: Phone Screen Stage 3: 1st Round Interview... 
    Full time
    Local area

    NODAL EXCHANGE

    McLean, VA
    3 days ago
  •  ...enthusiastic hospitality professionals!  At the Courtyard by Marriott Tysons McLean, we are always looking for talented individuals with a...  ...~ Tuition Reimbursement ~ TEAM MEMBER PROGRAMS: ~ Our Big 3 Mission Statement Leaders of the Month/Year ~ Annual Performance... 
    Temporary work
    Local area
    Flexible hours
    Shift work

    B.F. Saul Company Hospitality Group

    McLean, VA
    15 days ago
  •  ...will report to the Store Manager as part of our dynamic team in Tysons. How you will contribute: Meet and exceed monthly sales...  ...periods of time ~ Available to work closing shifts a minimum of 3 times per week, minimum of 3 Saturdays per month and two Sundays... 
    Full time
    Shift work

    Kering

    McLean, VA
    2 days ago
  •  ...Description Linux System Administrator Altamira Technologies has a long and successful history providing innovative solutions throughout...  ...to deliverables. Location : Chantilly, VA The Role : Altamira requires Linux system administration... 
    Worldwide

    Altamira Technologies

    McLean, VA
    3 days ago
  • $125k - $200k

     ...Systems Administrator The MIL Corporation is seeking a Systems Administrator with TS/SCI, FS to support a federal government client in McLean, VA. The Systems Administrator shall support the day-to-day operations of computer systems. This support includes installation... 
    Full time
    Contract work
    Work experience placement
    Remote work

    The MIL Corporation

    McLean, VA
    4 days ago
  • $7.5k

     ...come join us! Job Description: ~ We are looking for a Systems Administrator Lead to join our program supporting a key government customer...  ..., Computer Engineering, or Information Systems and three (3) years of combined experience in IT systems administration,... 
    Work experience placement
    Immediate start
    Flexible hours

    RealmOne

    McLean, VA
    1 day ago
  •  ...are interested in applying sensors, AI/ML systems, and data engineering for the exploitation...  ...organizations. Perform duties from Springfield, VA, with periodic travel to the United Kingdom...  ...; or 6 years and a Master's degree; or 3 years and a PhD; or an equivalent... 
    Temporary work
    For contractors
    Work experience placement
    Internship
    Local area
    Remote work

    MITRE

    McLean, VA
    3 days ago
  • $77.6k - $176k

     ...Linux Systems Administrator The Opportunity: Your technical expertise makes you the team hero, solving one problem after another. What...  ...Join us. The world can't wait. You Have: ~3+ years of experience with RedHat Enterprise Linux or CentOS... 
    Full time
    Contract work
    Part time
    Work at office
    Local area
    Remote work

    BOOZ, ALLEN & HAMILTON, INC.

    McLean, VA
    2 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to System Administrator 3 - Tysons, VA. Be the first to apply!