CrawlJobs Logo
Robert Half Logo Robert Half · IT - Administration

Systems Administrator

United States, Irvine · Job Posted March 27, 2026
Apply Position
Job Link Share

Job Description

We are looking for a skilled Systems Administrator to join our team in Irvine, California. This role is ideal for someone who thrives in a fast-paced environment and has a proactive approach to managing IT systems, resolving technical issues, and supporting organizational operations. The successful candidate will play a key role in ensuring seamless system performance and user satisfaction across various platforms.

Job Responsibility

  • Oversee daily IT systems administration tasks, including user account provisioning, access management, and application permission updates
  • Provide timely support by addressing IT tickets and escalating more complex issues as needed
  • Troubleshoot and resolve system-related problems to ensure optimal functionality of business applications
  • Facilitate employee onboarding and offboarding processes by setting up or deactivating accounts and coordinating with HR for smooth transitions
  • Administer and maintain collaboration tools like SharePoint, shared drives, and shared inboxes, ensuring proper access controls and organization
  • Act as a liaison between internal teams and Managed Service Providers (MSPs), monitoring service quality and ensuring timely resolution of issues
  • Manage mobile devices by overseeing provisioning, upgrades, inventory tracking, and resolving carrier-related issues
  • Prepare and review invoices for IT vendors and carriers, ensuring accuracy before approval and assisting in tracking IT expenses
  • Support security and compliance activities, including conducting access reviews and enforcing IT policies
  • Provide technical assistance to various departments, addressing operational support needs and resolving ad hoc requests

Requirements

  • Minimum of 2 years of experience in systems administration, IT support, or a related technical field
  • Strong knowledge of user account management, access controls, and enterprise applications
  • Hands-on experience with Microsoft environments, including SharePoint and shared services
  • Familiarity with Managed Service Providers (MSPs) and vendor coordination
  • Proficiency in mobile device management and telecom systems is preferred
  • Excellent troubleshooting skills with the ability to resolve issues independently and prioritize tasks
  • Effective communication skills with a focus on delivering exceptional customer service
  • Ability to multitask and adapt to the demands of a fast-paced work environment

What we offer

  • medical, vision, dental, and life and disability insurance
  • eligible to enroll in our company 401(k) plan
Robert Half - All Job Offers

Looking for more opportunities?

Search for other job offers that match your skills and interests.

Suggested Tags: Frontend Developer Secretary Talent Manager Salesforce Administrator Data Analyst
Similar Jobs for

Systems Administrator

8 matching positions

Systems Administrator

We are seeking a skilled Systems Administrator to support, maintain, and enhance...
Location
Location
United States , North Aurora
Salary
Salary:
Not provided
https://www.roberthalf.com Logo
Robert Half
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 3+ years of experience in systems administration or infrastructure support
  • Experience administering Windows Server and/or Linux environments
  • Knowledge of Active Directory, DNS, DHCP, and group policy administration
  • Experience with virtualization technologies such as VMware or Hyper-V
  • Familiarity with backup, recovery, patch management, and system monitoring tools
  • Strong troubleshooting and root cause analysis skills
  • Understanding of security best practices for infrastructure environments
  • Excellent communication and documentation skills
Job Responsibility
Job Responsibility
  • Administer, maintain, and support physical and virtual server environments
  • Monitor system performance, availability, and security
  • Install, configure, patch, and upgrade operating systems and server applications
  • Troubleshoot hardware, software, and infrastructure issues in a timely manner
  • Manage user accounts, permissions, and access controls
  • Support Active Directory, group policies, file services, and related enterprise systems
  • Assist with backup, recovery, and disaster recovery processes
  • Maintain system documentation, procedures, and inventory records
  • Collaborate with network, security, cloud, and help desk teams to resolve issues and improve operations
  • Participate in on-call support or after-hours maintenance as needed
What we offer
What we offer
  • medical
  • vision
  • dental
  • life and disability insurance
  • 401(k) plan
Read More
Arrow Right

Systems Administrator

We are seeking a skilled Systems Administrator to join our technology team. This...
Location
Location
United States , Delray Beach
Salary
Salary:
Not provided
https://www.roberthalf.com Logo
Robert Half
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 3–5 years of hands-on systems administration experience
  • Strong proficiency with Windows Server and/or Linux distributions
  • Experience managing Active Directory, Group Policy, DNS, DHCP, and file services
  • Hands-on virtualization experience (VMware, Hyper-V, or similar platforms)
  • Understanding of storage systems (SAN/NAS), RAID, snapshots, and failover clustering
  • Experience with scripting tools (PowerShell, Bash) for automation
  • Familiarity with backup solutions (Veeam, Commvault, Datto, etc.)
  • Knowledge of server monitoring tools (PRTG, SolarWinds, Nagios, etc.)
  • Strong troubleshooting and root-cause analysis skills
  • Excellent written and verbal communication
Job Responsibility
Job Responsibility
  • Manage and maintain Windows and/or Linux server environments including patching, updates, and performance monitoring
  • Administer Active Directory, Group Policy, DNS, DHCP, file shares, and permission structures
  • Support virtualization platforms such as VMware or Hyper-V, including VM creation, tuning, and maintenance
  • Oversee backup operations, disaster recovery testing, and storage systems
  • Assist with system upgrades, migrations, and infrastructure improvement projects
  • Monitor server health, performance metrics, and resource utilization
  • Troubleshoot server failures, authentication issues, and network-related system problems
  • Maintain accurate documentation including configurations, diagrams, and SOPs
  • Collaborate with network, help desk, and security teams to resolve escalated support issues
  • Ensure systems comply with organizational security policies and standards
What we offer
What we offer
  • Medical, vision, dental, and life and disability insurance
  • Company 401(k) plan
Read More
Arrow Right

Systems Administrator

We are looking for an experienced Systems Administrator to support daily technol...
Location
Location
United States , Brunswick
Salary
Salary:
Not provided
https://www.roberthalf.com Logo
Robert Half
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • At least 3 years of experience in IT support, systems administration, or infrastructure-focused roles
  • Hands-on expertise administering Microsoft 365 enterprise environments and related user services
  • Solid understanding of networking fundamentals such as TCP/IP, VLANs, VPNs, and general network troubleshooting
  • Experience supporting or managing endpoint administration tools such as Intune, NinjaOne, or similar platforms
Job Responsibility
Job Responsibility
  • Deliver timely technical assistance to employees across onsite, production, and remote work environments, resolving hardware, software, and connectivity issues
  • Oversee the administration of Microsoft 365 services, including email, collaboration platforms, cloud storage, identity management, and device policies
  • Configure, deploy, and support desktops, laptops, mobile devices, and related peripherals to maintain reliable end-user computing standards
  • Maintain and troubleshoot network infrastructure, including wireless connectivity, switching environments, and firewall platforms, to support stable business operations
  • Coordinate account provisioning and deactivation, manage permissions, and track software licensing to ensure appropriate user access
  • Support conference room technology, audiovisual equipment, and collaboration tools so meetings and communications run smoothly
  • Monitor system performance, investigate incidents, and assist with maintenance activities, upgrades, and technical improvements
  • Contribute to security-focused efforts by supporting endpoint protection, risk remediation, and broader cybersecurity practices
  • Create and update technical documentation for systems, support procedures, and operational standards, and work with external vendors on IT initiatives as needed
What we offer
What we offer
  • medical, vision, dental, and life and disability insurance
  • 401(k) plan
Read More
Arrow Right

Systems Administrator

We are seeking a skilled Systems Administrator to support, maintain, and enhance...
Location
Location
United States , North Aurora
Salary
Salary:
Not provided
https://www.roberthalf.com Logo
Robert Half
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 3+ years of experience in systems administration or infrastructure support
  • Experience administering Windows Server and/or Linux environments
  • Knowledge of Active Directory, DNS, DHCP, and group policy administration
  • Experience with virtualization technologies such as VMware or Hyper-V
  • Familiarity with backup, recovery, patch management, and system monitoring tools
  • Strong troubleshooting and root cause analysis skills
  • Understanding of security best practices for infrastructure environments
  • Excellent communication and documentation skills
Job Responsibility
Job Responsibility
  • Administer, maintain, and support physical and virtual server environments
  • Monitor system performance, availability, and security
  • Install, configure, patch, and upgrade operating systems and server applications
  • Troubleshoot hardware, software, and infrastructure issues in a timely manner
  • Manage user accounts, permissions, and access controls
  • Support Active Directory, group policies, file services, and related enterprise systems
  • Assist with backup, recovery, and disaster recovery processes
  • Maintain system documentation, procedures, and inventory records
  • Collaborate with network, security, cloud, and help desk teams to resolve issues and improve operations
  • Participate in on-call support or after-hours maintenance as needed
What we offer
What we offer
  • medical
  • vision
  • dental
  • life and disability insurance
  • 401(k) plan
  • Fulltime
Read More
Arrow Right

Systems Administrator

BlueWater Federal is looking for a Systems Administrator to support the BCITS II...
Location
Location
United States , Tullahoma
Salary
Salary:
Not provided
bwfed.com Logo
BlueWater Federal Solutions
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 3+ years of experience in Windows Server and virtual environment administration, system hardening, and patch management, such as Security Technical Implementation Guide compliance
  • 3+ years of experience performing system administration functions, including Windows Server and virtual machines, data center management, information technology preventive maintenance, and system hardening
  • Microsoft or Red Hat certification required
  • Security + certification required
  • Must have an active Secret clearance.
Job Responsibility
Job Responsibility
  • Maintain and support server infrastructure, including monthly reporting on server capacity, workloads, and future workloads
  • Manage servers and storage, including support for physical and virtual servers, clusters, print servers, SAN, EMC storage systems, virtualization, and backup systems
  • Perform server backup and restoration to ensure data can be recovered within 24 hours after a major failure
  • Monitor and tune servers on a 24/7 basis, including network connectivity, CPU, memory, disk space, uptime, response time, and web server availability
  • Troubleshoot, maintain, and upgrade servers while staying current on server technologies and service offerings through research, development, deployment, and training
  • Support SharePoint, websites, and administration by developing and maintaining websites that support web content management and keep information available to users
  • Support Morale, Welfare, and Recreation network servers by maintaining, monitoring, operating, and supporting server infrastructure in a stable environment for all service business systems.
  • Fulltime
Read More
Arrow Right

Systems Administrator

Aquila Technology is looking for a highly skilled System Administrator to suppor...
Location
Location
United States , Westford
Salary
Salary:
Not provided
aquila.technology Logo
Aquila Technology
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Clearance Level: Must have an Active Secret Clearance to be considered for this opportunity. Must be US Citizen
  • Currently holds a Secret Clearance (OR a higher clearance)
  • 3 years Security plans (i.e. RMF), procedures, and compliance with DoD directive 8140
  • 3 years Troubleshooting hardware and software issues
  • 3 years Troubleshooting network issues
  • 3 years Scripting and Task Automation
  • 3 years Linux Environment
  • 5 years Systems Administration
  • 3 years System Documentation
  • Strong interpersonal and organizational skills and the ability to manage multiple tasks with minimal supervision are required
Job Responsibility
Job Responsibility
  • Specify, design, implement, and test network and computer system configurations and upgrades in consultation with the staff
  • Develop, coordinate, and implement network security plans and measures in accordance with government and org policies
  • Identify system performance issues and assess user needs to recommend specific changes and upgrades
  • Perform data backups and recoveries
  • assist staff with computer and network problems and tasks
  • Research and recommend commercial hardware and software products to meet project and group requirements
  • Order hardware and software products
  • Renew software licenses to ensure continuity of service
  • Interact with vendors, org personnel, Security, and other system administrators to coordinate procurements, installations, upgrades, and other services
What we offer
What we offer
  • PTO – 15 days (vacation/sick)
  • 10 paid holidays – 6 standard (New Year’s, Memorial Day, Independence Day, Labor Day, Thanksgiving, and Christmas) – 4 floating holidays
  • 1.5 paid days, or 12 hours, for approved volunteer work
  • 1 week of paid maternity/paternity LOA after 1 year of Full-time employment
  • Tuition & Training Reimbursement– 5K annually
  • 401K with Fidelity – Eligible to participate following 90 days of employment. Company match: $1/$1 up to 3%, then .50 cents / $1 for 4th and 5th %s
  • Fully vested from day one
  • Cell Phone & Internet Reimbursed up to $150 monthly
  • Buy Your Own Device (BYOD) – reimbursement of up to $1,500 every three (3) years
  • Fulltime
Read More
Arrow Right

Systems Administrator

Aquila Technology is looking for a highly skilled System Administrator to suppor...
Location
Location
United States , Lexington
Salary
Salary:
Not provided
aquila.technology Logo
Aquila Technology
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Must have an Active Secret Clearance
  • Windows, and Linux operating systems in desktop and server environments
  • Scripting languages such as Shell, Python, or Perl
  • Rackmount and desktop x86-based computer hardware
  • Local- and Wide-Area Network design, including firewall and router configuration
  • Virtualization platforms such VMware ESX and VMware Workstation
  • Storage architectures including RAID, SAN, and NAS
  • Must have security+ certification
  • Degree Level: Bachelor's Degree
  • Scripting Languages: Perl, Python, Shell Scripting, Powershell
Job Responsibility
Job Responsibility
  • Installation, configuration, maintenance, and upgrades of computer workstations, servers and network infrastructure
  • Installation and maintenance of commercial software
  • Handling technical support requests for hardware and software issues
  • Automation of the Group's operational tasks
  • Managing and maintaining the Group's computer/IT supplies and spares
  • Specifying and ordering new computer systems and supplies
  • Documentation of IT procedures
  • Support for security procedures
  • IT support for org and field experiments, including field deployments
  • General User Desktop support
What we offer
What we offer
  • PTO – 15 days (vacation/sick) 10 paid holidays – 6 standard (New Year’s, Memorial Day, Independence Day, Labor Day, Thanksgiving, and Christmas) – 4 floating holidays prorated based on your day of hire
  • 1.5 paid days, or 12 hours, for approved volunteer work
  • 1 week of paid maternity/paternity LOA after 1 year of Full-time employment
  • Tuition & Training Reimbursement– 5K annually
  • 401K with Fidelity – Eligible to participate following 90 days of employment
  • Cell Phone & Internet Reimbursed up to $150 monthly
  • Buy Your Own Device (BYOD) – Team members are eligible for reimbursement of up to $1,500 every three (3) years for the purchase of electronic equipment
  • Fulltime
Read More
Arrow Right

Systems Administrator

We are looking for an experienced Systems Administrator to support and maintain ...
Location
Location
United States , New Braunfels
Salary
Salary:
Not provided
https://www.roberthalf.com Logo
Robert Half
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Hands-on experience administering Active Directory in a production environment
  • Strong working knowledge of Microsoft Windows Server administration and support
  • Proven ability to support and troubleshoot Microsoft Windows 10 systems
  • Experience working with Dell hardware or enterprise infrastructure solutions
  • Familiarity with Citrix technologies, including support and environment maintenance
  • Ability to diagnose technical issues methodically and deliver timely resolutions
  • Strong communication skills and the ability to work effectively in a support-focused environment
Job Responsibility
Job Responsibility
  • Administer Windows Server environments to maintain availability, performance, and system security
  • Manage Active Directory services, including user accounts, group policies, permissions, and access controls
  • Provide support for Windows 10 workstations by troubleshooting hardware, software, and operating system issues
  • Maintain and support Dell infrastructure components to help ensure dependable endpoint and server operations
  • Configure, monitor, and troubleshoot Citrix environments to deliver consistent remote access and application performance
  • Perform routine system maintenance, patching, upgrades, and health checks across servers and desktop platforms
  • Investigate technical incidents, resolve escalated issues, and document solutions to improve ongoing support
  • Assist with infrastructure improvements and operational changes, including system updates or environment transitions when required
What we offer
What we offer
  • medical, vision, dental, and life and disability insurance
  • enrollment in our company 401(k) plan
Read More
Arrow Right