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

System Administrator (All Levels)

Full-time

Adaptic

Where Systems Meet Mission: Join us as a System Administrator!  

At Adaptic, our System Administrators don't just maintain systems—they keep mission-critical environments running, secure, and optimized. Supporting the DoD and Intelligence Community, you'll work on infrastructure that directly enables real-world operations. 

Whether you're early in your career or leading system administration efforts across complex environments, we're looking for System Administrators at all levels who thrive on solving problems, improving performance, and ensuring reliability where it matters most. 

Your Impact  

You'll support and enhance mission systems across their lifecycle—ensuring stability, performance, and security in dynamic environments. Day-to-day, that can look like: 

  • Supporting implementation, troubleshooting, and maintenance of IT systems across mission environments
  • Managing system infrastructure, including servers, storage, networks, and endpoints
  • Monitoring system performance and resolving issues across client/server and distributed environments
  • Providing Tier 1 and Tier 2 support, including troubleshooting and escalation of complex issues
  • Configuring and maintaining UNIX/Linux and Windows operating systems
  • Installing, patching, and upgrading system software to maintain security and performance
  • Troubleshooting hardware, software, and network-related issues across integrated systems
  • Supporting system enhancements to improve reliability, scalability, and efficiency
  • Managing system resources and performing capacity planning and optimization
  • Collaborating with engineering teams to support system integration and architecture needs
  • Communicating system status, issues, and resolutions to internal stakeholders and leadership

Qualifications  

  • All positions require an active TS/SCI with polygraph
  • Experience supporting and maintaining IT systems in Linux/Unix and/or Windows environments
  • Strong troubleshooting skills across systems, applications, and infrastructure
  • Experience with system monitoring, patching, and performance optimization
  • Understanding of networking concepts and system interdependencies
  • Ability to work independently and as part of a team in fast-paced environments
  • A degree in Computer Science, Information Technology, or a related field (or equivalent experience)

Nice to Have  

  • Experience with virtualization technologies (e.g., VMware, ESXi)
  • Familiarity with automation or scripting (e.g., Bash, Python, PowerShell)
  • Experience with configuration management tools (e.g., Ansible, Puppet, Salt)
  • Exposure to cloud environments or hybrid infrastructure
  • Experience supporting mission or high-performance computing environments

Stability first. Performance always Apply now to learn more about our extensive benefits and customizable compensation packages.  

Vacancy posted 28 days ago
Similar jobs that could be interesting for youBased on the System Administrator (All Levels) in Annapolis Junction, MD vacancy
  •  ...Bachelor's degree in a technical discipline from an accredited college or university is required. Five (5) years of additional system administration experience may be substituted for a bachelor’s degree. Must be able to work Wed-Sun 2pm-10pm Hardware Experience... 
    Suggested
    Full time
    Contract work
    Work experience placement
    Local area
    Remote work
    Worldwide

    ELEVI Associates

    Annapolis Junction, MD
    2 days ago
  •  ...Job Description Job Description AEITS Inc. , a GTSC company, seeks System Administrators (Level I, II, or III). Location: Hanover, MD All work is on-site. This is not a hybrid or remote position. ~~~~~ These positions pending contract award ~~~ Mission... 
    Suggested
    Full time
    Contract work
    Local area
    Flexible hours
    Shift work
    Rotating shift

    Advantage Engineering & IT Solutions Inc

    Annapolis Junction, MD
    13 days ago
  •  ...Job Description Job Description What You Will Do: As a System Administrator Level 4 at Independent Software, you will support mission-critical IT systems in highly secure, high-availability environments. You will work across Linux and Windows platforms to ensure... 
    Suggested

    Independent Software

    Annapolis Junction, MD
    23 days ago
  • $148.75k - $201.25k

    Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to...  ...experience US Citizenship Required: Yes Job Description: SYSTEMS ADMINISTRATOR Advance how our customers operate while you advance your career... 
    Suggested
    Full time
    Temporary work
    Immediate start
    Remote work
    Worldwide
    Flexible hours

    General Dynamics Information Technology

    Annapolis Junction, MD
    2 days ago
  •  ...What You Will Do:   At Independent Software, as a System Administrator Level 2, you will support mission-critical telecommunications and infrastructure systems that enable national defense and intelligence operations. In this role, you will provide operational... 
    Suggested
    Full time
    Monday to Friday
    Shift work

    Independent Software

    Annapolis Junction, MD
    4 days ago
  • $70 - $88 per hour

     ...Security Clearance with Polygraph is required System Administrator – Skill Level 2 Are you a Linux-savvy systems professional looking to take your career to the next level? We're looking for a talented and motivated System Administrator (Level 2) to join our team... 
    Hourly pay
    Full time
    Temporary work
    Immediate start
    Relocation package
    Flexible hours

    CTRL + LLC

    Annapolis Junction, MD
    28 days ago
  •  ...What You Will Do: At Independent Software, as a System Administrator Level 3, you will provide advanced technical support for enterprise network, desktop, server, and cloud environments supporting mission-critical operations. You will troubleshoot complex hardware... 
    Full time
    Remote work
    Worldwide
    Night shift

    Independent Software

    Annapolis Junction, MD
    4 days ago
  •  ...us support all our customers. With certified experts consulting our clients, we can address the customer’s mission. System Administrator Level 3 • Provide support for implementation, troubleshooting and maintenance of IT systems • Provide Tier 1 (Help Desk) problem... 

    1 Accord Consulting LLC

    Annapolis Junction, MD
    25 days ago
  •  ...What You Will Do: As a System Administrator Level 2, you will provide hands-on support for the implementation, troubleshooting, maintenance, and optimization of enterprise IT systems supporting mission-critical operations. You will manage system infrastructure, ensure... 
    Full time

    Independent Software

    Annapolis Junction, MD
    more than 2 months ago
  • $80k - $130k

     ...Job Description Job Description RACTSOL Corp is seeking a System Administrator Level 1 to support the reliable operation of client and internal IT environments. Requires Top Secret Clearance w FS Poly. Position Summary The System Administrator Level 1 - FMNK will... 

    Roseman Advance Computer Technology and Solutions Corp

    Columbia, MD
    19 days ago
  • $114k - $164k

     ...s (BBJ) Best Places to Work 2019, runner up in 2020 and a finalist in 2021!   Belay Technologies is seeking a Mid-Level System Administrator (SA1 or SA2) to join our intel team. FC has a contract that provides world-wide, enterprise-scaled corporate data transport... 
    Contract work
    Work experience placement
    Worldwide
    Flexible hours

    Belay Technologies

    Columbia, MD
    24 days ago
  •  ...Job Description Job Description What You Will Do: As a System Administrator Level 1 at Independent Software, you will support mission-critical Linux environments within secure Department of Defense and Intelligence Community networks. You will be responsible for... 

    Independent Software

    Annapolis Junction, MD
    6 days ago
  •  ...support all our customers. With certified experts consulting our clients, we can address the customer’s mission. SA-1 System Administrator Level 1 Provides support for implementation, troubleshooting and maintenance of information Technology (IT) systems.... 

    1 Accord Consulting LLC

    Annapolis Junction, MD
    3 days ago
  •  ...Job Description SECURITY CLEARANCE: TS/SCI with both Polygraphs are required POSITION : Senior Systems Administrator LCAT :  Systems Administrator, Level 3 REQUISITION :  MAR-SA3-10.070125 LOCATION :  Ft. Meade, Maryland   JOB DESCRIPTION : CSG... 
    Remote work

    Capital Solutions Group

    Annapolis Junction, MD
    16 days ago
  •  ...Description Job Description SECURITY CLEARANCE: TS/SCI with both Polygraphs are required POSITION : Systems Administrator LCAT :  Systems Administrator, Level 2 REQUISITION :  MAR-SA2-12.070125 LOCATION :  Ft. Meade, Maryland   JOB DESCRIPTION :... 
    Remote work

    Capital Solutions Group

    Annapolis Junction, MD
    16 days ago
  •  ...Job Description Job Description What You Will Do: As a System Administrator Level 2, you will provide hands-on support for the implementation, troubleshooting, maintenance, and optimization of enterprise IT systems supporting mission-critical operations. You will... 

    Independent Software

    Annapolis Junction, MD
    2 days ago
  •  ...SECURITY CLEARANCE: TS/SCI with both Polygraphs are required POSITION : Senior Systems Administrator LCAT :  Systems Administrator, Level 3 REQUISITION :  MAR-SA3-10.070125p LOCATION :  Ft. Meade, Maryland JOB DESCRIPTION : CSG is searching for... 
    Remote work

    Capital Solutions Group

    Annapolis Junction, MD
    more than 2 months ago
  •  ...Job Description Job Description AEITS seeks a Systems Administrator , Level 2. This is a shift work working weeknights and weekends Sun - Thurs 2pm–10pm or Mon – Fri 2pm– 10pm P osition Description: Performs installation, maintenance and repair... 
    Full time
    Temporary work
    Local area
    Shift work
    Weekend work

    Advantage Engineering & IT Solutions Inc

    Annapolis Junction, MD
    20 days ago
  •  ...MANTECH seeks a motivated, career- and customer-oriented Cloud System Administrator to join our team in Annapolis Junction, MD. Our team...  ...ensuring compliance with security standards.  · Provide expert-level troubleshooting for complex technical issues.  ·... 
    Full time
    Work at office

    MANTECH

    Annapolis Junction, MD
    13 days ago
  • $150k - $250k

     ...Job Description Job Description Description: DarkStar Intelligence is seeking a System Administrator Level 2 to support the implementation, troubleshooting, and maintenance of critical Information Technology (IT) systems in a mission-focused environment. This role... 
    Local area

    Darkstar Intelligence LLC

    Annapolis Junction, MD
    13 days ago
  • $25k

    Leidos has a new and exciting opportunity for a Senior Linux Systems Administrator in our Intel Sector’s Cyber & Analytics Business Area. Our...  ...logging, patching, IAVMs, McAfee, and UAM. Responsible for user-level support, including interacting with system-savvy developers... 
    Full time
    Immediate start
    Relocation package
    Flexible hours

    Leidos

    Annapolis Junction, MD
    4 days ago
  •  ...MANTECH seeks a motivated, career and customer-oriented Systems Administrator to join our team in Laurel, MD. You will be part of a dedicated team delivering enterprise infrastructure capabilities for a global workforce that supports a wide range of national defense missions... 
    Full time
    Work at office

    MANTECH

    Laurel, MD
    11 days ago
  •  ...virtual machines running in a cloud infrastructure (Amazon AWS). - Evaluates systems for IAVA compliance and applies necessary security updates/patches. - Performs command line system administration tasks on virtual machines. - Handles regular system backups and... 
    Temporary work
    Local area

    vetegrity

    Annapolis Junction, MD
    11 days ago
  •  ...MANTECH  seeks a motivated, career and customer-oriented  Systems Administrator . This position is based in Linthicum Heights, MD.   As a...  ...related technical roles. ~ Department of Defense (DoD) IAT Level II certification, such as CompTIA Security+ or equivalent. Candidates... 
    Full time
    Work at office

    MANTECH

    Linthicum Heights, MD
    12 days ago
  • $75.3k - $129.1k

     ...Description Job Description POSITION PURPOSE The Thermal Systems Modeling Engineer will work across our key internal stakeholders...  ...solutions. This would involve coordination of cooling system level modeling and testing while collaborating directly with some of our... 
    Work at office
    Flexible hours
    Afternoon shift

    Baltimore Aircoil Company, Inc.

    Jessup, MD
    22 days ago
  • $100k - $120k

     ...System Administrator Level 2 IT / Infrastructure | Hanover, MD | Full Time Position: System Administrator Level 2 Location: Hanover, MD Category: IT / Systems Administration Schedule: Standard Day Shift, Monday–Friday Clearance Requirement: Active... 
    Full time
    Temporary work
    Monday to Friday
    Flexible hours
    Day shift

    TAP Engineering

    Hanover, MD
    25 days ago
  • $100k - $120k

     ...Job Description Job Description System Administrator Level 2 IT / Infrastructure | Hanover, MD | Full Time Position: System Administrator Level 2 Location: Hanover, MD Category: IT / Systems Administration Schedule: Standard Day Shift, Monday–Friday... 
    Full time
    Temporary work
    Monday to Friday
    Flexible hours
    Day shift

    TAP Engineering

    Hanover, MD
    8 days ago
  • $125k

     ...provider of cybersecurity, software and systems engineering and IT services to the U.S....  ...critical and innovative capabilities to high-level decision makers that enhance our nation’...  ...Overview We are seeking Linux System Administrators to manage, maintain, and secure... 
    Full time
    Work at office
    Flexible hours

    Synergy ECP

    Annapolis Junction, MD
    4 days ago
  •  ...MANTECH seeks a motivated, career- and customer-oriented Cloud System Administrator to join the team in Annapolis Junction , MD . Our team delivers enterprise infrastructure capabilities for a global workforce performing a wide range of missions in defense of our... 
    Work at office

    MANTECH

    Annapolis Junction, MD
    10 days ago
  • $110k - $130k

     ...Job Description Job Description Job Title Mid‑Level Systems Integration Engineer (Linux, Unix, C)  Why IDS? IDS believes in resolving...  ...experience with Linux systems • Experience in systems administration, network administration, application administration, or IT... 
    Local area
    Flexible hours
    Shift work

    IDS International

    Annapolis Junction, MD
    16 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to System Administrator (All Levels). Be the first to apply!