Demo

Sr. IT Systems Administrator

Allied Telesis
San Jose, CA Full Time
POSTED ON 1/13/2026
AVAILABLE BEFORE 3/13/2026

Summary

Responsible for development, deployment, and day-to-day support and administration of the ATI server (on-premises and cloud) IT infrastructure, including Active Directory domain and Office 365. Work in a proactive global team environment driving innovative solutions/architecture to positively impact the success of the company.

Essential Duties and Responsibilities:

  • Provide high-level technical analysis, support, and maintenance of server infrastructure across multiple sites to support business objectives and achieve optimum performance levels
  • Perform level 3 problem resolution and administration of local and enterprise-wide production infrastructure systems
  • Perform day-to-day administration, configuration, and support of Windows and Linux server environments running on VMware hypervisors.
  • Perform day-to-day administration and support of Microsoft Active Directory domain and single-tenant Office 365 organization
  • Install and maintain new software releases, system upgrades, evaluate and install patches, and resolve related problems
  • Support and maintain end user requirements, including troubleshooting, account administration and infrastructure systems
  • Maintain, monitor, and analyze system components and make recommendations regarding IT infrastructure systems and security best practices
  • Contribute to the administration and support of business continuity and disaster recovery implementations 
  • Conduct software and hardware evaluations, provide technical analysis, and implement systems to meet the company’s IT goals
  • Develop and promote standard operating procedures. Conduct hardware and software audits to ensure compliance with established standards, policies, and configuration guidelines
  • Work with a team to automate infrastructure management tasks, streamline processes and perform standard administration functions as needed
  • Perform and document maintenance tasks for production systems
  • Provide coaching and guidance to level 1 and 2 IT infrastructure staff
  • Conduct technology implementation tasks with limited review required by higher-level technical or managerial staff
  • Perform analysis of existing technology systems to ensure stability, reliability, and performance
  • Participate in technology projects and provide advice and planning/design documentation for implementing infrastructure technologies
  • Conduct capacity planning and upgrades to production and test systems
  • Facilitate development and adoption of standards and best practices
  • Coordinate and facilitate technology system changes with other IT infrastructure and applications team members utilizing change management procedures
  • Take part in the overall design, implementation, support, and standards of assigned enterprise-wide infrastructure technologies and best practices
  • Extremely Strong Trouble-Shooting Skills / Analytical Minded. Able to perform in-depth research to identify and solve problems

Extensive Knowledge/ Expertise in: 

  • Best-practices for systems and network administration related to backups, virtual server architecture, security, high-availability solutions, and monitoring procedures
  • Microsoft Active Directory administration, Group Policy creation and administration
  • VMware VSphere, ESXi, VCenter, High-Availability (Knowledge of other hypervisor systems and containers are a plus)
  • Microsoft Windows Server 2019 , Exchange (On-premises and Office 365 Exchange Online)
  • Microsoft Office 365 User, Groups, and rights-management (including Sharepoint site management)
  • Linux server administration
  • Multi-Factor Authentication knowledge and best-practices (Okta, Duo, etc.)
  • AWS / Azure Cloud experience such as S3 storage and installing and maintaining EC2 Instances
  • Backup and recovery solutions such as Veeam / Backup Exec / AWS S3 Backup
  • Cybersecurity best-practices and solution implementation (including zero-trust architectures)
  • MS Windows desktop and Microsoft 365 account and application support capabilities
  • Task automation, programming and scripting languages (Python, Ansible, PowerShell, etc.) are a plus
  • Communication and networking technologies and protocols, including TCP/IP, LAN, WAN, WLAN, etc.

Education 

  • BA/BS in computer science, or an equivalent combination of education and experience

Experience

  • 5 years of experience supporting computer systems on a wide variety of platforms
  • Desired / Beneficial Certifications:
    • ITIL Foundation
    • CIISP
    • MSCE
    • Network
    • Security
    • Linux
    • PMP
    • AWS Certified Solutions Architect / Azure Fundamentals
    • Microsoft 365 Enterprise Administrator Expert



Salary : $115,000 - $135,000

If your compensation planning software is too rigid to deploy winning incentive strategies, it’s time to find an adaptable solution. Compensation Planning
Enhance your organization's compensation strategy with salary data sets that HR and team managers can use to pay your staff right. Surveys & Data Sets

What is the career path for a Sr. IT Systems Administrator?

Sign up to receive alerts about other jobs on the Sr. IT Systems Administrator career path by checking the boxes next to the positions that interest you.
Income Estimation: 
$36,885 - $46,221
Income Estimation: 
$79,078 - $104,694
Income Estimation: 
$154,597 - $194,610
Income Estimation: 
$172,688 - $210,712
Income Estimation: 
$170,589 - $211,671
Income Estimation: 
$178,619 - $225,190
Income Estimation: 
$86,891 - $130,303
Income Estimation: 
$103,114 - $138,258
Income Estimation: 
$118,163 - $145,996
Income Estimation: 
$120,777 - $151,022
Income Estimation: 
$129,363 - $167,316
Income Estimation: 
$86,891 - $130,303
Income Estimation: 
$81,253 - $112,554
Income Estimation: 
$89,966 - $112,616
Income Estimation: 
$95,407 - $122,738
Income Estimation: 
$103,114 - $138,258
Income Estimation: 
$86,891 - $130,303
Income Estimation: 
$129,363 - $167,316
Income Estimation: 
$145,845 - $177,256
Income Estimation: 
$147,836 - $182,130
Income Estimation: 
$154,597 - $194,610
Income Estimation: 
$86,891 - $130,303
View Core, Job Family, and Industry Job Skills and Competency Data for more than 15,000 Job Titles Skills Library

Job openings at Allied Telesis

  • Allied Telesis CA, CA
  • Job Summary: Responsible for developing and closing opportunities across a defined list of partners and within a targeted geographic region. The candidate ... more
  • Just Posted

  • Allied Telesis San Jose, CA
  • Job Summary: Responsible for designing, developing, and testing mechanical devices and systems. Designs complex chassis based products with minimal supervi... more
  • 1 Day Ago


Not the job you're looking for? Here are some other Sr. IT Systems Administrator jobs in the San Jose, CA area that may be a better fit.

  • Monolithic Power Systems, Inc. San Jose, CA
  • Monolithic Power Systems, Inc. (MPS) is one of the fastest growing companies in the Semiconductor industry. We are worldwide technical leaders in Integrate... more
  • 14 Days Ago

  • DivIHN Integration Inc Palo Alto, CA
  • DivIHN (pronounced “divine”) is a CMMI ML3-certified Technology and Talent solutions firm. Driven by a unique Purpose, Culture, and Value Delivery Model, w... more
  • 2 Months Ago

AI Assistant is available now!

Feel free to start your new journey!