CrawlJobs Logo

Senior IT Systems Administrator

https://www.roberthalf.com Logo

Robert Half

Location Icon

Location:
United States , Juno Beach

Category Icon
Category:
IT - Administration

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

Not provided
Save Job
Save Icon
Apply Position

Job Description:

We are looking for an experienced IT Systems Administrator-Level 3 to join our team on a long-term contract basis in Juno Beach, Florida. In this role, you will manage and optimize enterprise IT infrastructure, ensuring operational efficiency, robust cybersecurity measures, and compliance with industry standards. The ideal candidate will bring advanced expertise in system architecture, cloud technology, virtualization platforms, and infrastructure security.

Job Responsibility:

  • Manage the installation, configuration, and maintenance of computing infrastructure, including operating systems and middleware products, across various platforms
  • Evaluate, implement, and adjust software parameters and solutions to optimize system performance
  • Develop and enforce cybersecurity measures to safeguard enterprise IT environments and ensure compliance with regulations
  • Oversee enterprise Active Directory environments, virtualization platforms, and network infrastructure
  • Lead IT infrastructure projects such as data center operations, cloud migrations, and automation initiatives
  • Collaborate with monitoring engineers to enhance issue prediction, detection, and automated response systems
  • Drive continuous improvement in system reliability through root cause analysis and problem management
  • Ensure timely delivery of PC hardware and software asset management processes and IT audit requirements
  • Maintain compliance with workstation patching and vulnerability reduction efforts
  • Utilize IT governance frameworks to establish policies and procedures that align with best practices and industry standards

Requirements:

  • Bachelor's degree in Computer Science, Information Technology, or a related field
  • 11-15 years of experience managing enterprise IT environments, system architecture, and infrastructure security with attention to detail
  • Advanced knowledge of Active Directory, Azure AD, VMware, and cloud-based infrastructure solutions
  • Expertise in IT governance, cybersecurity risk management, and compliance with industry regulations
  • Demonstrated ability to lead complex IT projects, including cloud migrations and automation initiatives
  • Proficiency in problem management, root cause analysis, and system reliability enhancement
  • Familiarity with monitoring tools and techniques to improve incident detection and response
  • Strong understanding of networking, operating systems, and configuration management processes
What we offer:
  • medical
  • vision
  • dental
  • life and disability insurance
  • 401(k) plan

Additional Information:

Job Posted:
February 13, 2026

Icon
Robert Half - All Job Offers
Job Link Share:
Copy Link Icon
Facebook Icon Twitter Icon LinkedIn Icon

Looking for more opportunities? Search for other job offers that match your skills and interests.

Briefcase Icon

Similar Jobs for Senior IT Systems Administrator

Senior System Administrator

At Centrico, we bring innovation to the banking and fintech world with our open ...
Location
Location
Italy , Biella
Salary
Salary:
Not provided
centrico.tech Logo
Centrico
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s Degree in Informatics
  • Excellent diagnostic and problem solving skills
  • Curiosity, innovative spirit and always willing to stay up-to-date
  • Teamwork skills and ability to build strong inter-personal relationships
  • Good work organization skills and compliance with deadlines
  • Fluent English required
  • Excellent knowledge of load balancers - F5 Networks preferred
  • Excellent knowledge of Checkpoint technology, Fortinet firewalls
  • Strong skills in Cloud and Hybrid Cloud environments (Microsoft AZURE preferred)
  • Excellent knowledge of L2 and L3 switches
Job Responsibility
Job Responsibility
  • Management of the Group Network infrastructure (balancers, firewalls, switches, AS, etc ...)
  • Coordination of ordinary and extraordinary activities of the tlc carrier for the Group WAN
  • Management of the Group WAN infrastructure (routers, switches, Wi Fi, etc ...)
  • Design and management of Cloud and Hybrid Cloud environments
  • IT Operations architectures definition and setting
Read More
Arrow Right

Senior System Administrator

At Centrico, we bring innovation to the banking and fintech world with our open ...
Location
Location
Italy , Biella
Salary
Salary:
Not provided
centrico.tech Logo
Centrico
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor’s Degree in Informatics
  • Excellent diagnostic and problem solving skills
  • Curiosity, innovative spirit and always willing to stay up-to-date
  • Teamwork skills and ability to build strong inter-personal relationships
  • Good work organization skills and compliance with deadlines
  • Fluent English required
  • Excellent knowledge of load balancers - F5 Networks preferred
  • Excellent knowledge of Checkpoint technology, Fortinet firewalls
  • Strong skills in Cloud and Hybrid Cloud environments (Microsoft AZURE preferred)
  • Excellent knowledge of L2 and L3 switches
Job Responsibility
Job Responsibility
  • Management of the Group Network infrastructure (balancers, firewalls, switches, AS, etc ...)
  • Coordination of ordinary and extraordinary activities of the tlc carrier for the Group WAN
  • Management of the Group WAN infrastructure (routers, switches, Wi Fi, etc ...)
  • Design and management of Cloud and Hybrid Cloud environments
  • IT Operations architectures definition and setting
Read More
Arrow Right

Senior System Administrator

As a Senior System Administrator at Exor International, you will manage, maintai...
Location
Location
Italy , San Giovanni Lupatoto
Salary
Salary:
Not provided
exorint.com Logo
EXOR International
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Proven experience (5+ years) as a system administrator or in similar roles
  • Strong knowledge of Windows Server operating systems in hyperconverged server farm environments (Nutanix) and virtualization platforms (VMware)
  • Experience with monitoring tools (PRTG)
  • Good understanding of network protocols, DNS, DHCP, TCP/IP
  • Knowledge of Microsoft authentication services (AD and Entra ID)
  • Experience with Sophos Firewall, End Point Security, and VPN
  • Familiarity with mail relay servers (Libra Esva) and email management using Exchange Online
  • Ability to work independently and manage complex projects
  • Good written and spoken English
  • Willingness to travel occasionally to company locations
Job Responsibility
Job Responsibility
  • Manage and monitor physical and virtual servers (Windows/Linux)
  • Administer cloud environments (Azure)
  • Configure and maintain networks, firewalls, VPNs, and security systems
  • Automate processes using scripting (e.g., Bash, PowerShell) with MDM and EDB (Baramundi)
  • Oversee backups (Veeam) and disaster recovery (Nutanix asynchronous replication)
  • Provide second- and third-level technical support
  • Manage vulnerability assessments and implement remediations
  • Maintain technical documentation and update IT policies
  • Fulltime
Read More
Arrow Right

Senior Systems Administrator

ExoAnalytic Solutions is seeking an exceptionally talented Senior Systems Admini...
Location
Location
United States , El Segundo
Salary
Salary:
120000.00 - 150000.00 USD / Year
exoanalytic.com Logo
ExoAnalytic Solutions
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • BS in Computer Science, Computer Engineering, or similar
  • CompTIA Security+
  • 5+ years managing a classified network
  • United States citizenship required
  • Existing TS/SCI is required
  • solid understanding of troubleshooting and configuration of Windows servers and workstations in a classified environment
  • self-sufficient
  • quick learner
  • must be able to adapt quickly to evolving technology and priority changes
  • Current TS/SCI clearance
Job Responsibility
Job Responsibility
  • Maintain compliance with all classified network rules and regulations
  • Maintain all required classified network documentation reflecting the current operational environment
  • Install and configure Windows operating systems to include Server 2016 and Windows 10
  • Configure server and workstation hardware according to system requirements
  • Utilize approved software to manage software patching of servers and workstations
  • Utilize approved software to manage anti-virus policies and update definitions
  • Create, modify, and delete user accounts and groups in Active Directory
  • Troubleshoot server, workstation, and user experience issues
  • Create and configure virtual machines as necessary
  • Experience with NTFS file and share permissions
What we offer
What we offer
  • company-paid medical, vision, and dental coverage
  • access to a 401(k) Retirement Plan with a 6% contribution made by the company without requiring any match from the employee
  • ample paid personal time off, including holidays
  • short and long-term disability insurance
  • life insurance
  • various other discounts and perks
  • flexible schedule
  • structured freedom that allows employees to innovate
  • Fulltime
Read More
Arrow Right

Senior System Administrator

We are seeking a highly qualified Senior System Administrator, known for their d...
Location
Location
Canada , Saint-Augustin-de-Desmaures
Salary
Salary:
Not provided
leclerc.ca Logo
Biscuits Leclerc Ltd
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Proficiency in Azure and AWS cloud environments
  • Advanced expertise in Windows server administration
  • In-depth knowledge of Entra and Active Directory
  • Strong experience with Intune
  • Mastery of Fortinet products
  • Demonstrated ability to work with discipline, take initiative, and operate autonomously
  • Strong teamwork and advisory skills across technical and non-technical stakeholders
  • Analytical mindset focused on continuous improvement
  • Degree in Computer Science or a related field
  • Minimum of 10 years of experience in complex system administration
Job Responsibility
Job Responsibility
  • Make critical decisions regarding system architecture with precision and strategic insight
  • Manage and maintain Windows and Linux servers with a focus on reliability and performance
  • Administer and optimize cloud services (Azure, AWS) independently
  • Handle identity and access management using Entra and Active Directory
  • Supervise and configure Intune for device and server management
  • Ensure network security and administration using Fortinet and Cisco products
  • Implement and maintain effective backup and disaster recovery solutions
  • Collaborate actively with internal teams in a spirit of teamwork
  • Provide advanced technical support and act as an advisor to colleagues and partners
  • Contribute to the ongoing improvement of administrative processes and tools
  • Fulltime
Read More
Arrow Right

Senior System Administrator

We are seeking a highly qualified Senior System Administrator, known for their d...
Location
Location
Canada , Brockville
Salary
Salary:
Not provided
leclerc.ca Logo
Biscuits Leclerc Ltd
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Degree in Computer Science or a related field
  • Minimum of 10 years of experience in complex system administration
  • Proficiency in Azure and AWS cloud environments
  • Advanced expertise in Windows server administration
  • In-depth knowledge of Entra and Active Directory
  • Strong experience with Intune
  • Mastery of Fortinet products
  • Demonstrated ability to work with discipline, take initiative, and operate autonomously
  • Strong teamwork and advisory skills across technical and non-technical stakeholders
  • Analytical mindset focused on continuous improvement
Job Responsibility
Job Responsibility
  • Make critical decisions regarding system architecture with precision and strategic insight
  • Manage and maintain Windows and Linux servers with a focus on reliability and performance
  • Administer and optimize cloud services (Azure, AWS) independently
  • Handle identity and access management using Entra and Active Directory
  • Supervise and configure Intune for device and server management
  • Ensure network security and administration using Fortinet and Cisco products
  • Implement and maintain effective backup and disaster recovery solutions
  • Collaborate actively with internal teams in a spirit of teamwork
  • Provide advanced technical support and act as an advisor to colleagues and partners
  • Contribute to the ongoing improvement of administrative processes and tools
What we offer
What we offer
  • Paid and adapted training
  • Complete benefits program (drug and dental insurance, 1 week of sick leave [conditions apply], telemedicine, group RRSP with employer participation and more)
  • Quality meals at low prices in the cafeteria (unlimited coffee, tea, cookies and bars)
  • Free use of the sports facilities (basketball court, training room and cardio room)
  • Save on our delicious products and discover exclusive novelties
  • Job security and opportunities for advancement within the company
  • Rich company culture (Christmas, birthday and maternity gifts, use of the Poka platform and more)
  • Fulltime
Read More
Arrow Right

Senior Linux Systems Administrator

Aquila Technology is seeking a Senior Linux Systems Administrator to join our te...
Location
Location
United States , Lexington
Salary
Salary:
Not provided
aquila.technology Logo
Aquila Technology
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Must be a U.S Citizen
  • Must have an Active Secret Clearance (Green Cards / Visas do not qualify)
  • Willingness to undergo a comprehensive background investigation and maintain a personal security clearance
  • 5 years – Networks
  • 5 years – Networking Applications and Protocols: TCP/IP, DNS, NTP, DHCP, SSH, FTP and HTTP/S
  • 5 years – SSH Server implementation, Linux Networking Configuration, Host Based Firewall, Web Server
  • 5 years – Programming
  • 5 years – Scripting Experience: Python, Ansible, TCL or Bash
  • 5 years – Systems
  • 5 years – Configuration of Distributed Environments, including NFS for Storage
Job Responsibility
Job Responsibility
  • Performing systems administration on Red Hat 8/9 servers, Red Hat Identity Management (IdM), and Red Hat Ansible Automation
  • Server performance optimization
  • Cyber security
  • OS and application patching
  • McAfee suite
  • Scripting
  • Storage
  • Disaster recovery
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 for pre-approved, job-related tuition, certification, or professional conferences
  • 401K with Fidelity 100% immediate vesting
  • Aquila matches 100% the fist 3%, then 50% on the next 2%
  • Cell Phone & Internet Reimbursed up to $150 monthly to cover cell phone, data, and home internet expenses
  • By Your Own Device (BYOD) Allowance Reimbursed up to $1500 for the purchase of a qualified technology device
  • Fulltime
Read More
Arrow Right

Senior Systems Administrator

Drive automation and modernization to truly impact mission success. This is an o...
Location
Location
United States , Annapolis Junction
Salary
Salary:
150000.00 - 250000.00 USD / Year
lufburrow.com Logo
LufCo
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelors degree in a Technical field
  • 5 years of additional experience as a Systems Administrator may be substituted for a Bachelors degree
  • SA2: 10+ years of experience in System Administration on programs or projects of similar scope, type, and complexity
  • SA3: 15+ years of experience in System Administration on programs or projects of similar scope, type, and complexity
  • Skills: Linux
  • Ansible
  • Shell scripting
  • Active TS/SCI with Polygraph clearance
Job Responsibility
Job Responsibility
  • Implementation, troubleshooting, and maintenance of IT systems leveraging automation frameworks
  • Improve and monitor the daily activities of system configuration and operation across a full stack of hardware and software
  • Excel at problem solving to support mission users and provide feedback to system designers and developers
  • Plan and update mission critical systems on a day-to-day basis without impacting a massive stakeholder community
  • Provide innovative methods of reliability and recovery improvements and assist in designing next generation deployment profiles for system modernization
  • Possess a helpful attitude for problem resolution and work issue escalation between users and system developers
  • Optimizes system operations and resource utilization, and perform system capacity analysis and planning
  • Provides in-depth experience in trouble-shooting IT systems
  • Offers support for the dispatch system and hardware problems and remains involved in the resolution process
What we offer
What we offer
  • Competitive salary
  • generous PTO
  • health/dental/vision insurance
  • 401K matching
  • tuition reimbursement
  • Paid Time Off
  • 401K Contribution and Employer Match Contributions
  • Medical, Dental, and Vision Coverage
  • Fulltime
Read More
Arrow Right
Jobs by Category
Art and Entertainment Jobs Banking Jobs Call Center Jobs Construction Jobs Consulting Jobs Customer Service Jobs Education Jobs Energy Jobs Finance Jobs Gastronomy Jobs Health and Beauty Jobs Hospitality and Tourism Jobs Human Resources Jobs Insurance Jobs IT - Administration Jobs IT - Software Development Jobs Legal Jobs Logistics Jobs Manufacturing Jobs Marketing, Digital Marketing, SEO, SEM Jobs Media Jobs Nursing Jobs Office Administration Jobs Pharmacy Jobs Physical Work Jobs Public Relations Jobs Public Sector Jobs Purchasing Jobs Quality Control Jobs Real Estate Jobs Research and Development Jobs Sales Jobs
Job Positions Jobs by Country
United States Jobs United Kingdom Jobs India Jobs Canada Jobs Australia Jobs Germany Jobs Ireland Jobs Poland Jobs
Company
Blog About Us Contact
Follow Us
Facebook
X (Twitter)
LinkedIn
Instagram
CrawlJobs Group
ITFlashcards AllDevBlogs
© 2026 CrawlJobs Ltd. All Rights Reserved
Terms & Conditions Privacy Policy