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Application System Administrator Jobs (NOW HIRING)

System One

System Administrator

Jessup, MD · On-site

$150K/yr

System Administrator - TS/SCI w/ Full Scope Polygraph (FSP) Location: Annapolis Junction, MD Work ... Troubleshoot operating system and application issues in complex environments * Write and maintain ...

Excentium, Inc.

SYSTEM ADMINISTRATOR

Andrews, MD · On-site

This role is responsible for administering, maintaining, and supporting the infrastructure and application environments supporting the CMTARS platform. The System Administrator will manage system ...

System One

System Administrator

Annapolis Junction, MD · On-site

$150K/yr

System Administrator - TS/SCI w/ Full Scope Polygraph (FSP) Location: Annapolis Junction, MD Work ... Troubleshoot operating system and application issues in complex environments * Write and maintain ...

Beacon

System Administrator

Wilmington, NC

System Administrator ID: 0726 Location: Wilmington, NC Department: ITS - IT Services More about ... Configure, monitor, and troubleshoot network firewalls and web application firewalls, including ...

System One

System Administrator

Annapolis Junction, MD · On-site

$150K/yr

System Administrator - TS/SCI w/ Polygraph Location: Annapolis Junction, MD Work Model: 100% Onsite ... Troubleshoot operating system and application issues in complex environments * Write and maintain ...

System One

System Administrator

Annapolis Junction, MD · On-site

$150K/yr

System Administrator - TS/SCI w/ Polygraph Location: Annapolis Junction, MD Work Model: 100% Onsite ... Troubleshoot operating system and application issues in complex environments * Write and maintain ...

Entarian

System Administrator

Honolulu, HI

$65K - $120K/yr

Provide system administration, system integration, and application support for DFC mission systems ... Administer and maintain VMware virtual environments, including vCenter Server Appliances and ESXi ...

Reflexive Concepts

System Administrator

Hanover, MD · On-site

The CASPORT team is seeking a System Administrator to support development and production ... Application servers (JBoss) * AWS cloud computing services (VPC, EC2, AWS CLI, S3) * Cloud ...

Hirekeyz Inc

System Administrator

Andrews, MD · On-site

This role is responsible for administering, maintaining, and supporting the infrastructure and application environments supporting the CMTARS platform. The System Administrator will manage system ...

The AES Group

System Administrator

Fort Belvoir, VA · On-site

Administer physical and virtual server infrastructure, including storage systems, application servers, backup environments, and related enterprise platforms. * Participate in infrastructure design ...

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Showing results 21-40

All JobsApplication System Administrator Jobs

Application System Administrator information

See salary details

$62.5K

$98K

$169.5K

How much do application system administrator jobs pay per year?

As of Aug 16, 2026, the average yearly pay for application system administrator in the United States is $97,965.00, according to ZipRecruiter salary data. Most workers in this role earn between $77,500.00 and $104,000.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as an application system administrator?

To thrive as an Application System Administrator, you need a solid understanding of operating systems, application management, networking, and a relevant degree or certifications such as CompTIA Server+ or Microsoft Certified: Azure Administrator. Familiarity with system monitoring tools, configuration management software, and ticketing systems is typically required. Strong problem-solving skills, attention to detail, and effective communication help you collaborate with teams and address user needs efficiently. These skills ensure reliable system performance, rapid issue resolution, and smooth operation of critical business applications.

What is the difference between Application System Administrator vs Database Administrator?

AspectApplication System AdministratorDatabase Administrator
CertificationsITIL, CompTIA Server+, vendor-specific certificationsOracle Certified Professional, Microsoft SQL Server certifications
Work EnvironmentSupports application servers, manages deployment, troubleshootingManages database systems, ensures data integrity, performance tuning
Industry UsageCommon in software, IT services, enterprise applicationsPrevalent in finance, healthcare, data-driven industries

The Application System Administrator focuses on maintaining and supporting application servers and software, ensuring smooth deployment and operation. In contrast, the Database Administrator specializes in managing database systems, optimizing performance, and safeguarding data integrity. Both roles require technical certifications and are vital in IT environments, but they serve different core functions within organizations.

How does an application system administrator typically collaborate with other departments to ensure smooth system operations?

Application System Administrators frequently work with teams such as IT support, software developers, and end-users to maintain optimal system functionality. They coordinate with developers to resolve application issues, implement updates, and ensure software integrations run smoothly. Additionally, they may partner with business units to gather requirements, provide technical guidance, and offer user training. This collaborative approach helps align system performance with organizational needs and ensures quick resolution of any technical challenges.

What is an application system administrator?

Application System Administrators are IT professionals responsible for installing, configuring, maintaining, and supporting software applications within an organization. They ensure that applications run smoothly, are updated regularly, and remain secure. Their duties often include troubleshooting issues, managing user access, performing backups, and coordinating with other IT staff or vendors. They play a crucial role in maximizing application uptime and performance to support business operations.

What cities are hiring for Application System Administrator jobs?

Cities with the most Application System Administrator job openings:

What states have the most Application System Administrator jobs?

States with the most job openings for Application System Administrator jobs include:

Application System Administrator jobs near you
Infographic showing various Application System Administrator job openings in the United States as of August 2026, with employment types broken down into 1% As Needed, 84% Full Time, 12% Part Time, and 3% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $97,965 per year, or $47.1 per hour.

System Administrator

System One

Jessup, MD • On-site

$150K/yr

Other

Medical, Dental, Vision, Life, Retirement

Posted 26 days ago

Job description

System Administrator – TS/SCI w/ Full Scope Polygraph (FSP)

Location: Annapolis Junction, MD 
Work Model: 100% Onsite
Type: Direct Hire (W2)
Compensation: Up to $150,000/year 
Schedule: 40 hours/week
Clearance Required: Active TS/SCI with FSP 

About the Role

We’re hiring System Administrators at multiple experience levels to support mission-critical operations in Linux-based, high-performance environments. This role is ideal for someone who enjoys hands-on troubleshooting, optimizing system performance, and working closely with engineering and operations teams to keep essential infrastructure reliable and available.

This team includes professionals who specialize in platform, network, and storage engineering—but everyone is expected to contribute to core Linux system administration and operational sustainment work.

What You’ll Do
  • Monitor, maintain, and troubleshoot systems and infrastructure supporting mission operations
  • Install, configure, and administer Linux operating systems and applications
  • Manage file systems, networking services, and system resources
  • Troubleshoot operating system and application issues in complex environments
  • Write and maintain Bash scripts to automate administrative tasks
  • Compile, install, configure, and support software applications
  • Support automation and configuration management initiatives
  • Collaborate with engineering/operations teams to resolve issues and improve performance
  • Document configurations, procedures, and troubleshooting steps
  • Participate in upgrades, maintenance windows, and operational support activities
Required Qualifications
  • Active TS/SCI with Polygraph
  • Linux administration experience with one or more of the following:
    • RHEL, CentOS, Rocky Linux, SLES, Ubuntu
  • Experience with:
    • Linux installation/configuration
    • File system administration
    • TCP/IP networking fundamentals
    • OS and application troubleshooting
    • Bash scripting
    • Software compilation and installation
  • Strong analytical troubleshooting skills and ability to work both independently and on a team
Nice to Have (Strongly Preferred)
  • Exposure to or understanding of High-Performance Computing (HPC) environments
  • Experience supporting large-scale enterprise or mission-critical infrastructure
  • Familiarity with high-speed networking such as InfiniBand and/or Slingshot
  • Tools/Platforms:
    • Jira, Confluence, Grafana, Prometheus, Nagios, Slurm, Git, Salt, Ansible
Storage / Networking Experience (A Plus)

If you have a background in storage, networking, or infrastructure engineering, you’re highly encouraged to apply.

Storage technologies (preferred):

  • Lustre configuration/administration/troubleshooting
  • DDN Exascaler appliances
  • Storage fabric design/support
  • Storage performance tuning/optimization

Networking technologies (preferred):

  • Enterprise routing/switching (Cisco / Juniper / Arista)

Bonus (emerging tech exposure):

  • E1000 Storage Systems, ESNs, DAOS, Weka

Benchmarking/diagnostics tools:

  • IOR, iperf, FIO, lnet_selftest

System One, and its subsidiaries including Joulé and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.

System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.

#M-1
 

Ref: #851-Rockville-S1

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