System Administrator Jobs

Systems Administrator

Contract Systems Administrator position responsible for configuration, maintenan...

Location

United States , Nashville

Salary:

Not provided

Robert Half

Expiration Date

Until further notice

Requirements

Proven experience as a Systems Administrator or in a similar role
Strong knowledge of Windows Server, Linux, and virtualization technologies
Experience with network administration and security protocols
Proficiency in hardware and software troubleshooting
Strong problem-solving skills and attention to detail
Excellent communication and interpersonal skills
Ability to work independently and as part of a team

Job Responsibility

Perform routine system maintenance, including software updates, patch management, and regular system backups
Manage and maintain server hardware and software, including Windows Server, Linux, or other relevant operating systems
Oversee network infrastructure, ensuring optimal performance, security, and reliability
Implement and monitor security protocols to safeguard systems and data
Provide technical support to end-users
Maintain detailed records of system configurations, changes, and updates
Assess system performance and capacity
Develop and implement backup and disaster recovery plans
Collaborate with technology vendors

What we offer

Medical, vision, dental, and life and disability insurance
401(k) plan
Free online training

Network and Systems Administrator

This position entails the configuration, maintenance, and troubleshooting of com...

Location

United States , Bloomington

Salary:

Not provided

Megaputer

Expiration Date

Until further notice

Requirements

Bachelor’s degree in Informatics, Computer Science, Business or related field
2+ years’ experience as a network administrator or similar capacity
Microsoft Windows Server 2008, 2012
Windows 7, 8, 10
Linux
Switches, routers, network hardware, including 10Gbps fiberoptics, load balancing
Firewalls, VLANs (Cisco, HP, etc.), NAT, proxy
Understanding of networking concepts such as DNS, DHCP, Email, HTTP(s), SSL and TCP/IP protocols, and applications
Active Directory, Group Policy
VMware vSphere and/or Microsoft HyperV, backup solutions (Acronis, Barracuda, Windows Backup, etc.)

Job Responsibility

Install, maintain and administer computer networks and related computing environments, including computer hardware, systems software, applications software, and all configurations
Diagnose, troubleshoot, and resolve hardware, software, or other network and system problems and replace defective components when necessary
Plan, coordinate, and implement network security measures to protect data, software and hardware, including the virus protection software
Operate master consoles to monitor the performance of computer systems and networks, and to coordinate computer network access and use
Evaluate user needs, perform a comprehensive search/compare, and procure computer software and hardware, maintain adequate supplies (spare drives, printer paper, toners, etc.)
Design, assemble, configure and test computer hardware and networking and operating system software
Monitor network performance to determine whether adjustments need to be made, and to determine where changes will need to be made in the future
Assist in configuring, monitoring, and maintaining email applications
Assist in perform data backups and disaster recovery operations

Network & Systems Administrator

Analysis, design, development, implementation and maintenance of computer system...

Location

United States , Canton

Salary:

Not provided

LogicQue

Expiration Date

Until further notice

Requirements

Bachelor’s Degree in Computer Science, Engineering, or related degree
Five (4) years of experience
Travel and/or relocation to various unanticipated locations throughout the U.S. required
Bachelors in computer science or information systems or Bachelors in engineering with experience in software development
Experience: 0-4 years
Skills: HTML, JSP, Windows server, UNIX, Linux

Job Responsibility

Analysis, design, development, implementation and maintenance of computer systems and networks

Fulltime

IT System and Administrator

Your main objective will be to make sure that our IT infrastructure operates eff...

Location

India , Vadodara

Salary:

Not provided

VAP Group

Expiration Date

Until further notice

Requirements

Proven experience in a network administrator, system administrator, or related position
A bachelor’s degree (or an equivalent degree) in computer science or information technology
Knowledge of databases, networks (LAN, WAN), and patch management
Understanding of data backup/recovery, intrusion detection systems, and system security
Excellent communication abilities

Job Responsibility

Installing and setting up devices and software
Control network servers and equipment
Configure user accounts and workstations
Observe performance and keep systems up to date in accordance with requirements
Troubleshoot issues and outages
Ensure security through access controls, backups and firewalls
Modernize systems with the latest models and releases
Develop expertise to train staff on new technologies
Create an internal wiki with manuals, procedures, and IT policies

Fulltime

Linux System Administrator

Hoplite Solutions is seeking a motivated and experienced Linux System Administra...

Location

United States , Fort Meade

Salary:

Not provided

Hoplite Solutions

Expiration Date

Until further notice

Requirements

Bachelor's degree plus 11 years of relevant experience or equivalent
Active TS/SCI with Polygraph security clearance
Experience deploying and maintaining nginx
Experience with system monitoring platforms like OpenVAS, Prometheus and Grafana
Experience with SELinux and FIPS
Knowledge of LatteArt/Biscotti, Netseer, SEAR logging
Network administration including installing, configuring, and maintaining net devices
Configuring various routing protocols, troubleshooting multi-hop connectivity, throughput, and latency
Setting up firewalls
Responsible for secure infrastructure and vulnerability corrections, data security, compliance, and backups and recovery

Job Responsibility

Design, maintain, and support operations and maintenance (O&M) activities of a large enclave comprised of various hardware, software, and network components to include server architecture, virtual machines, managed switches, NAS, VLANs, and VPNs
Develop and carry out strategies to migrate existing customers to new architecture and technology with minimal impact
Evaluate new technologies or equipment that can be added to Agency standard solutions
Lead, evolve, and maintain a dynamic, modern DevOps architecture, often based on open-source technology and not relying on corporate baselines, to support software developers, phased system upgrades, compliance, and improvements aimed at ensuring continued execution of the IDO mission
Improve availability and reliability, reduce latency, and optimize performance, while maintaining the security posture

What we offer

Full coverage for health, dental, and vision insurance for both individuals and families
100% coverage for life insurance, long-term and short-term disability
Match up to 7% of employees' contributions to their 401(k) funds
Federal holiday calendar for paid holidays
4 weeks of paid time off
$5,000 yearly for education assistance or technical training
$3,000 yearly toward student loan repayment or a 529 College Savings Plan

Fulltime

Cloud Systems Administrator

Knight Federal Solutions is a trusted provider to industry leading prime contrac...

Location

United States , Colorado Springs

Salary:

Not provided

Knight Federal Solutions

Expiration Date

Until further notice

Requirements

2 years of general systems administration experience demonstrating progressive responsibilities
2 years of experience performing Windows or Linux system administration duties
Experience supporting a cloud environment (AWS preferred) to include delivering, securing/managing, and diagnosing/troubleshooting complex issues
Experience in a DevSecOps environment (e.g., working with configuration management tools, applying automation & configuration/infrastructure as code concepts)
Bachelor’s Degree in Technical Discipline, or 4 years of equivalent professional or military experience can be used in lieu of degree requirements

Job Responsibility

Debug and enhance/modify Ansible scripts to deploy IaC and CaC
Patch and restart instances from enterprise patching repositories (YUM, WSUS
Set/configure/modify IAM policies to enable customer role-based access to workload IS
Integrate and implement platform capabilities (e.g., Nessus endpoint) in workload
Select and configure AMIs to optimize workload
Coordinate with other team members to implement capabilities to meet customer requirements
Troubleshoot various issues, such as operating systems, networking, cloud services, and software
Perform Active Directory administration and Group Policy management
Knowledge of DoD STIGs, and ability to implement them as needed
Run Nessus scans and remediate vulnerabilities

Middle System Administrator

We are looking for an experienced System Administrator to help maintain a stable...

Location

United States

Salary:

Not provided

JatApp

Expiration Date

Until further notice

Requirements

3+ years of experience in system or network administration or 2–4 years as a System Administrator / DevOps / Infrastructure Engineer
Practical experience with Zero Trust, preferably Cloudflare ZTNA
Confident knowledge of Linux and basic understanding of Windows Server
Knowledge of Windows / macOS, Azure AD, MDM, SSO, SCIM
Understanding of network protocols: DNS, DHCP, NAT, TCP/IP
Experience with Docker or Kubernetes
Experience with monitoring systems
Ability to write scripts (Bash and/or Python)
Basic knowledge of security (firewall, SSL, audit)
English — Upper-Intermediate+

Job Responsibility

Support and access: User support (HelpDesk), technical assistance, macOS/Windows configuration
Access management via Cloudflare ZTNA/Cloudflare Access (SSO, security policies)
Google Workspace and Microsoft 365 administration
Implementation and support of MDM solutions (Jamf, Intune, Kandji)
Infrastructure and systems: Administration of Linux (Ubuntu/Debian) and Windows Server systems
Support and development of internal infrastructure, performance optimization
Working with virtualization: VMware, Proxmox, Hyper-V
Configuration and support of network infrastructure (VLAN, VPN, Firewall)
Backup and disaster recovery configuration
Infrastructure security: updates, patching, access control

What we offer

Mental and Physical Health: health care is a must, so at JATAPP, we will cover health insurance for you
Benefits Cafeteria: choose what you like most — sports, food delivery, home office supplies — and we will cover your expenses under available budget
Knowledge sharing: such events are our way to grow together. We gather to discuss new trends, share our own insights, and elevate one another
Remote-First Culture: it’s up to you whether to work remotely or at our coworking space
Personal Equipment Policy: no tech troubles — you’ll get a MacBook and everything you need for comfortable and efficient work
Learning and Development Opportunities: it's a real pleasure for us to watch you learn, so we're happy to cover your learning and development costs, as well as English courses. Besides this, everyone in JATAPP gets access to the Projector Library
Community of like-minded people: at JATAPP, you will work in a team of like-minded people who are ready to launch a product, run a marathon, or climb Hoverla together
Creative freedom: we encourage initiative and creative thinking, so with us, you can be yourself and have the freedom of professional expression
Legal & Finance Support: we cooperate with the best financiers and lawyers who will be ready to help solve any of your questions upon request
Time-off Policy: 20 vacation days per year, 5 days for sick leave without medical confirmation, unlimited sick leaves with a doctor's note, 3 personal days, and 2 days off for special events or occasions

Fulltime

Senior IT Systems Administrator

At Lunar Energy, we're on a mission to transform the way we power our homes by b...

Location

United Kingdom , London

Salary:

Not provided

Lunar Energy

Expiration Date

Until further notice

Requirements

A minimum of 5 years' work experience within IT Systems administration in any sector
Proficiency in Okta and Google Workspace administration
Experience with Okta Workflows for workflow automation
Expertise in MacOS and Windows device support & management - 2nd/3rd line level support essential
Familiarity with MDM solutions for Windows and macOS
Proficiency in network administration - layer 2 and 3 switching, VLANs, DNS, DHCP, firewalls, VPNs.
Experience in Domain name and DNS management
Excellent communication skills, with the ability to talk and present to a range of audiences, sometimes acting as a translator between parties
Excellent attention to detail and a methodical approach
The ability to motivate others and guide change

Job Responsibility

Administer the company’s SaaS platforms, as well as support remote users with day-to-day issues.
Implement a new automation or integration system between our services to streamline data flows, and document it for future reference.
Evaluate and respond to end-user requests for new features or functionality.
Identify issues with and optimise IT processes or platform integrations.
Research and recommend new products or services.
Ensure smooth delivery and operation of IT services by monitoring system performance.
Provide 1st/2nd/3rd line support to colleagues concerning issues with their devices, the office network infrastructure or SaaS platform integrations.
Run training sessions for end-users on how to get the most from a given platform.
Problem determination and incident management of network and connectivity issues
Operational performance monitoring and analysis of internal networks

What we offer

Competitive Salary and stock options package
Private Medical Insurance scheme through BUPA (medical history disregarded)
A wellbeing and lifestyle benefits plan through Medicash
Enhanced Pension contributions: employer contributions matching 5%
A budget for work related training of £1,000 per financial year and an allowance of 4 training days
Cycle To Work scheme and Workplace Nursery benefit
£200 upon joining for remote work set-up
Access to Spill - Mental Health Support platform
Enhanced Maternity + Paternity Pay
25 days annual holiday entitlement + 8 Bank Holidays

Fulltime

System Administrator

Barbaricum

Location:
United States , Fort Eustis

Category:
IT - Administration

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:
December 23, 2025

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Location:United States , Fort Eustis

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Contract Type:Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Additional Information:

Job Posted:December 23, 2025

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Contract Type:
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Job Posted:
December 23, 2025