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  1. Home
  2. ›Onsite Jobs
  3. ›Onsite System Administrator jobs in the United States
‹ Onsite Jobs

Onsite System Administrator jobs in the United States

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  • Sun
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      Senior Product Manager Interview

      Sarah Jenkins

    • 2:30 PM - 3:00 PM

      Initial Interview

      Alex Chen

  • Mon
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      Product Manager Interview

      David G. (Hiring Manager)

    • 4:15 PM - 5:15 PM

      First Round Interview

      Sophie L.

  • Tue
    • 1:20 PM - 1:45 PM

      Introductory Interview

      Marta W.

    • 2:30 PM - 3:00 PM

      Kick-off Interview

      Daria (HR)

  • Wed
    • 1:00 PM - 1:45 PM

      Qualifying Interview

      James Miller

    • 5:30 PM - 6:00 PM

      Discovery Interview

      Chris V.

  • Thu
    • 2:30 PM - 3:00 PM

      First Interview

      Michael T.

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Aug 23, 2025

System Administrator Jobs On-Site — Launch Your Career Across the USA

Companies across the United States are hiring for 500+ system administrator on-site jobs, reflecting steady demand for reliable IT infrastructure management. This on-site role lets professionals work directly within dynamic technical teams, supporting business continuity. With businesses prioritizing in-house IT support, now is an excellent time to explore system administrator positions nationwide.

Successful candidates typically bring strong expertise in server management, network troubleshooting, and data security protocols. Familiarity with Windows and Linux environments, virtualization platforms, and scripting languages like PowerShell or Bash remains valuable. Employers also look for problem-solving skills, attention to detail, and the ability to manage multiple priorities under pressure, along with clear communication.

On-site work remains standard for this role across the USA, as businesses depend on hands-on support to manage servers, hardware, and internal networks. Many organizations, from healthcare to finance, continue expanding their IT departments, fueling consistent hiring activity nationwide and creating strong demand for system administrator vacancies in collaborative, fast-paced environments.

If you are ready to advance your career, now is the time to explore new opportunities and hire a system administrator who fits your team. Global Work AI connects motivated professionals with employers seeking dependable IT talent. Discover your next system administrator position and take the next step today.

Frequently Asked
Questions

Everything you need to know about
finding your next role
  • What is the average system administrator salary in the USA?

    Compensation for a system administrator in the USA commonly lands in the mid-$70,000s to low-$90,000s, with higher pay in major tech markets and for candidates supporting larger environments. According to current industry wage data, location, infrastructure complexity, and cloud exposure can move earnings well above that range, especially in cities with strong demand for IT support and security. On-site roles may also include overtime, shift differentials, or benefit packages that add real value. It helps to compare postings, since pay bands vary widely by sector and company size.
  • What skills and qualifications are needed for a system administrator job?

    Strong candidates usually bring hands-on experience with Windows or Linux environments, user and access management, networking basics, backup tools, and troubleshooting across servers, endpoints, and printers. Many USA employers also look for familiarity with Active Directory, virtualization, cloud platforms, patching, and security controls. A degree in IT or a related field can help, but practical experience often matters just as much. Clear communication and careful documentation are important in on-site work, where teams rely on fast coordination. Reviewing current listings can show which technical stacks are most requested.
  • What does a system administrator do in an on-site role?

    In an on-site setting, the job centers on keeping local systems available, secure, and responsive for staff who need reliable access every day. That can include server maintenance, hardware checks, network support, account provisioning, and quick response to workstation or connectivity issues. Because the work happens in the office or facility, a system administrator can also handle physical equipment, cabling, badge-related access, and coordination with other IT staff. Employers in the USA often value this face-to-face support for faster problem solving. Checking similar in-person IT roles can help set expectations.
  • What are the day-to-day responsibilities of a system administrator?

    Daily work often starts with monitoring alerts, checking backups, reviewing logs, and making sure critical services are running properly. A system administrator may also install updates, manage permissions, reset accounts, support users, and document changes to infrastructure. In the USA, on-site teams frequently handle urgent issues tied to office devices, local servers, or internal applications, so priorities can shift quickly. Security tasks such as patching and access reviews are also common. Since workloads vary by employer, it is useful to compare job ads to see how much time is spent on support versus maintenance.
  • Is CompTIA Server+, Microsoft, or Linux certification helpful for a system administrator role?

    Yes, these certifications can strengthen a system administrator profile, especially when employers want proof of platform-specific knowledge. CompTIA Server+ is useful for broad server and infrastructure skills, Microsoft credentials support Windows Server and cloud-adjacent environments, and Linux certifications show readiness for open-source systems common in many USA IT teams. None of them replaces experience, but they can improve credibility and help candidates stand out in competitive hiring. For on-site positions, certification plus practical troubleshooting often carries the most weight. Checking job requirements will show which credential is most relevant to a target employer.
  • How does the hiring process work for a system administrator job in the USA?

    Most hiring processes begin with an application review, followed by recruiter screening and one or more interviews with IT leaders or hiring managers. Employers often test knowledge of networking, operating systems, server support, and incident handling, and some include practical questions or scenario-based troubleshooting. For on-site system administrator roles in the USA, teams may also assess communication skills, reliability, and the ability to work with internal users in person. Background checks and reference calls are common in many organizations. Comparing timelines across listings can give a clearer idea of what each company expects.
  • What is the career path for a system administrator in IT?

    This role often serves as a stepping stone into higher-level infrastructure and support careers. Many professionals move into senior system administrator, cloud engineer, infrastructure engineer, network administrator, IT manager, or cybersecurity-focused roles after building deeper expertise. In the USA, employers often reward experience with enterprise platforms, automation, identity tools, and security operations, especially in on-site environments where broad problem solving matters. Some also pivot into DevOps or platform administration as their scripting and cloud skills grow. Looking at adjacent openings can help map the next move and the skills to build first.

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500+ jobs found

  • TalentOps

    TalentOps

    Today

    System administrator (linux, aws)

    Position Overview We are seeking a skilled System Administrator I to support and maintain critical IT infrastructure in Annapolis Junction, Maryland. The ideal candidate will have a strong background...

    onsite, Annapolis Junction, MD, United States
    Full TimeSenior (5+ years)
  • V2X

    V2X

    Today

    System administrator

    Overview Working across the globe, V2X builds smart solutions designed to integrate physical and digital infrastructure from base to battlefield. We bring 120 years of successful mission support to...

    onsite, Colorado Springs, CO, United States
    Full TimeSenior (5+ years)
  • Paragon Technology Group

    Paragon Technology Group

    2 days ago

    System administrator

    System Administrator The System Administrator provides technical support for JECC workstation and networked peripheral environments. The role includes system installation, configuration, operations,...

    onsite, Norfolk, VA, United States
    $92k – $102k/yrFull TimeSenior (5+ years)
  • Magna International

    Magna International

    2 days ago

    It system administrator supervisor

    Job descriptions may display in multiple languages based on your language selection. What we offer: At Magna, you can expect an engaging and dynamic environment where you can help to develop...

    onsite, Nashville, TN, United States
    $80k – $100k/yrFull TimeLead / Manager
  • Wyetech

    Wyetech

    2 days ago

    System administrator skill level 2

    System Administrator (SA) – Skill Level 2 Required Clearance: Active TS/SCI with Full Scope Polygraph (polygraph must be in scope within the past 7 years) Hourly Pay Range: $67.24–$84.98 Wyetech is...

    onsite, Annapolis Junction, MD, United States
    $136k – $171k/yrFull TimeSenior (5+ years)
  • Kimball Midwest

    Kimball Midwest

    2 days ago

    System administrator

    Kimball Midwest, a national distributor of maintenance, repair, and operation products, is searching for a System Administrator for our Columbus, Ohio location. As a Kimball Midwest associate, you'll...

    onsite, Columbus, OH, United States
    $65k – $75k/yrFull TimeJunior (<2 years)
  • City of Cleveland

    City of Cleveland

    3 days ago

    System administrator

    Description System Administrator Examples of Duties Supervise Staff: Plan, assign, supervise, train, and review activities of subordinate employees. Support Users: Train, create user documentation,...

    onsite, 1601 - Innovation & Technology, OH, United States
    $65k – $85k/yrFull TimeJunior (<2 years)
  • Houston Food Bank

    Houston Food Bank

    3 days ago

    System administrator

    POSITION SUMMARY: The Systems Administrator is responsible for the day-to-day administration, support, maintenance, and optimization of the organization's IT systems and infrastructure, including...

    onsite, Houston, TX, United States
    Full TimeMiddle (2-4 years)
  • Resource Management Concepts, Inc.

    Resource Management Concepts, Inc.

    3 days ago

    System administrator i

    The System/Network Administrator supports U.S. Navy mission systems by administering, maintaining, securing, and documenting classified and unclassified network infrastructure. The position is...

    onsite, Crane, IN, United States
    $62k – $78k/yrFull TimeJunior (<2 years)
  • GROB

    GROB

    3 days ago

    System administrator

    This position is responsible for all aspects of systems administration including maintain and administering our company's networked system of computers. The system administrator's responsibilities...

    onsite, Bluffton, MN, United States
    Full TimeJunior (<2 years)
  • Wyetech

    Wyetech

    4 days ago

    System administrator (sa) skill level 3

    Senior System Administrator (SA) – Skill Level 3 Requisition: SADM3 Required Clearance: Active TS/SCI with Full Scope Polygraph Wyetech is seeking an experienced Senior System Administrator (SA3) to...

    onsite, Annapolis Junction, MD, United States
    $142k – $224k/yrFull TimeSenior (5+ years)
  • Resource Management Concepts, Inc.

    Resource Management Concepts, Inc.

    4 days ago

    System administrator, senior

    RMC is hiring a Senior System Administrator to support IT work at NSWC Crane. The selected applicant will work collaboratively with the MECM team to build packages and deploy to all servers and...

    onsite, Crane, IN, United States
    $75k – $95k/yrFull TimeSenior (5+ years)
  • General Dynamics Information Technology

    General Dynamics Information Technology

    4 days ago

    System administrator

    This is an unpaid fellowship through the Department of War (DoW) SkillBridge Program. The fellow selected for this role will not receive compensation or benefits from GDIT and will not be an...

    onsite, Joint Base Elmendorf Richardson, AK, United States
    Full TimeMiddle (2-4 years)
  • BTS Software Solutions

    BTS Software Solutions

    7 days ago

    System administrator (ii-iii

    The position is for a future opportunity scheduled for Award Spring 2027. BTS Software Solutions is seeking a System Administrator to manage information systems in support of customer operations. Job...

    onsite, Annapolis Junction, MD, United States
    $200k – $250k/yrFull TimeMiddle (2-4 years)
  • Chenega Corporation

    Chenega Corporation

    7 days ago

    System administrator iii

    Summary System Administrator III Albuquerque, NM Are you ready to enhance your skills and build your career in a rapidly evolving business climate? Are you looking for a career where professional...

    onsite, Albuquerque, NM, United States
    $75k – $85k/yrFull TimeMiddle (2-4 years)
  • North South Consulting Group

    North South Consulting Group

    7 days ago

    System administrator

    NSCG is looking for a System Administrator to keep our IT environment secure, reliable, and running smoothly for approximately 300 on-premises and remote users. You will manage identities, devices,...

    onsite, Elizabethtown, KY, United States
    Full TimeJunior (<2 years)
  • Cyberstar, LLC

    Cyberstar, LLC

    7 days ago

    System administrator iii

    Overview System Administrator III Albuquerque, NM Are you ready to enhance your skills and build your career in a rapidly evolving business climate? Are you looking for a career where professional...

    onsite, Albuquerque, NM, United States
    $75k – $85k/yrFull TimeLead / Manager
  • Westminster Public Schools

    Westminster Public Schools

    9 days ago

    System administrator

    System Administrator Position Type: ESP - Computers & Technology Date Posted: 10/20/2026 Location: TECHNOLOGY SERVICES Closing Date: Until filled Hours per Day: 8 FTE: 1.0 Days per Year: 260 Reports...

    onsite, Westminster, CO, United States
    $77k – $86k/yrFull TimeJunior (<2 years)
  • Govcio LLC

    Govcio LLC

    9 days ago

    System administrator

    System Administrator GovCIO is currently hiring for a System Administrator to analyze, monitor, troubleshoot, and maintain NITC training systems, servers, hardware, software, and Government-furnished...

    onsite, Pensacola, FL, United States
    Full TimeMiddle (2-4 years)
  • TSC

    TSC

    9 days ago

    System administrator iii

    FALCATA is seeking a full-time , on-site System Administrator (SA) to work as part of a team managing multiple Information Systems (IS) in accordance with DoD/Risk Management Framework (RMF)...

    onsite, Silver Spring, MD, United States
    $103k – $147k/yrFull TimeMiddle (2-4 years)
  • BNH

    BNH

    9 days ago

    System administrator

    Overview Job Title: System Administrator Location: Arnold AFB, TN Job Family Code: P – IT/ Cyber Security/ Network Systems Function/Branch: Infrastructure Directorate: Mission Information Services...

    onsite, Arnold AFB, TN, United States
    $65k – $103k/yrFull TimeMiddle (2-4 years)
  • Corvid Technologies LLC

    Corvid Technologies LLC

    10 days ago

    System administrator

    Corvid's Range Engineering & Instrumentation team is adding an experienced System Administrator to provide direct support to a variety of systems used to support testing activities. This customer...

    onsite, Huntsville, AL, United States
    Full TimeMiddle (2-4 years)
  • Killdeer Mountain Manufacturing

    Killdeer Mountain Manufacturing

    10 days ago

    System administrator 1

    Support the Technology Behind Mission-Critical Innovation At KMM, technology plays a crucial role in supporting the teams that build electrical wire harnesses used in aerospace, defense, and space...

    onsite, Dickinson, MD, United States
    Full TimeJunior (<2 years)
  • Calista Corporation

    Calista Corporation

    11 days ago

    System administrator iii

    Maintain and secure the IT infrastructure supporting a collateral storage facility operating on a closed, isolated network. Responsibilities include administration of Windows and Linux systems,...

    onsite, Huntsville, AL, United States
    Full TimeMiddle (2-4 years)
  • Ellis Medicine

    Ellis Medicine

    13 days ago

    System administrator ii

    The System Administrator II provides advanced support in the management, maintenance, and troubleshooting of the hospital’s IT systems and infrastructure. This role involves a higher level of...

    onsite, Schenectady, NY, United States
    $73k – $109k/yrFull TimeJunior (<2 years)
  • M.C. Dean, Inc

    M.C. Dean, Inc

    14 days ago

    System administrator 1

    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,...

    onsite, Tysons Corner, VA, United States
    $76k – $94k/yrFull TimeSenior (5+ years)
  • RWE

    RWE

    15 days ago

    System administrator i - ot applications

    To start as soon as possible, full time, permanent Functional area: IT / Digital Remuneration: Exempt The System Application Administrator I supports the reliability, availability, security, and...

    onsite, Austin, TX, United States
    $80k – $90k/yrFull TimeJunior (<2 years)
  • C

    Canvas Inc.

    15 days ago

    System administrator (pl)

    Key Responsibilities Provide cybersecurity-focused systems administration, sustainment, and technical support for the flight’s Windows- and Linux-based data-processing, software-development,...

    onsite, Eglin AFB, FL, United States
    Full TimeMiddle (2-4 years)
  • Cyber B.A.T. Inc

    Cyber B.A.T. Inc

    16 days ago

    System administrator, nk-01-0070

    Join the Mission at Cyber B.A.T. At Cyber B.A.T., we believe in one simple idea: Take care of those that take care of you. We’re a Service-Disabled Veteran-Owned Small Business delivering...

    onsite, Annapolis Junction, MD, United States
    Full TimeMiddle (2-4 years)
  • Reflexive Concepts

    Reflexive Concepts

    16 days ago

    System administrator i

    Reflexive Concepts is seeking a skilled System Administrator I to join our team! Responsibilities: Provide Tier I (Help Desk) and Tier 2 (Escalation) problem identification, diagnosis and resolution...

    onsite, Columbia, MD, United States
    Full TimeSenior (5+ years)
  • Boeing

    Boeing

    18 days ago

    System administrator

    System Administrator Company: Tapestry - G0G Tapestry Solutions, A Boeing Company, brings over 30 years of industry experience designing, implementing, training, and supporting high-quality,...

    onsite, Hazelwood, MO, United States
    $80k – $104k/yrFull TimeJunior (<2 years)
  • Farfield Systems

    Farfield Systems

    20 days ago

    System administrator 2

    Provides support for implementation, troubleshooting and maintenance of Information Technology (IT) systems. Manages IT system infrastructure and any processes related to these systems. Provides...

    onsite, Fort Meade, MD, United States
    Full TimeSenior (5+ years)
  • Unisity

    Unisity

    20 days ago

    System administrator l1

    Unisity, LLC is a Service-Disabled Veteran Owned Small Business providing expert services in the Information Technology fields. We pride ourselves on delivering what is promised, as some would say we...

    onsite, Annapolis Junction, MD, United States
    $145k – $155k/yrFull TimeMiddle (2-4 years)
  • EchoStar

    EchoStar

    20 days ago

    System administrator – windows desktop admin

    Company Summary EchoStar is reimagining the future of connectivity. Our business reach spans satellite television service, live-streaming and on-demand programming, smart home installation services,...

    onsite, Centennial, CO, United States
    $84k – $120k/yrFull TimeLead / Manager
  • Harrison Steel Castings Co.

    Harrison Steel Castings Co.

    23 days ago

    System administrator

    System Administrator Harrison Steel Castings Co. has an opening for a System Administrator within the Information Technology department. This position would be responsible for the design,...

    onsite, Attica, IN, United States
    Full TimeMiddle (2-4 years)
  • General Dynamics Information Technology

    General Dynamics Information Technology

    24 days ago

    System administrator i

    Type of Requisition: Regular Clearance Level Must Currently Possess: Top Secret SCI + Polygraph Clearance Level Must Be Able to Obtain: Top Secret SCI + Polygraph Public Trust/Other Required: None...

    onsite, Annapolis Junction, MD, United States
    $82k – $111k/yrFull TimeMiddle (2-4 years)
  • Chiron Technology Services

    Chiron Technology Services

    a month ago

    System administrator

    Chiron Technology Services, Inc. currently has a System Administrator career opportunity in the Annapolis Junction, MD area. Capabilities: Provides support for implementation, troubleshooting and...

    onsite, Annapolis Junction, MD, United States
    $115k – $120k/yrFull TimeJunior (<2 years)
  • Power3 Solutions

    Power3 Solutions

    a month ago

    System administrator (linux)

    We solve difficult business, IT, and analytic problems by addressing the whole problem – not just the symptoms – using interdisciplinary approaches that are both practical and innovative. We provide...

    onsite, Ft. Meade, MD, United States
    Full TimeSenior (5+ years)
  • Chenega Corporation

    Chenega Corporation

    a month ago

    System administrator v

    Summary Join Our Talent Network Stay connected. Explore future opportunities. Engage on your terms. Our Talent Network is designed for professionals who want to stay informed about upcoming Chenega...

    onsite, Albuquerque, NM, United States
    Full TimeMiddle (2-4 years)
  • Cyberstar, LLC

    Cyberstar, LLC

    a month ago

    System administrator v

    Overview Join Our Talent Network Stay connected. Explore future opportunities. Engage on your terms. Our Talent Network is designed for professionals who want to stay informed about upcoming Chenega...

    onsite, Albuquerque, NM, United States
    Full TimeLead / Manager

10,000,000+ more jobs available!