Senior Windows System Administrator Job at Robert Half (Los Altos)

Senior System Administrator

The Senior System Administrator will be responsible for effective provisioning, ...

Location

United States , Milwaukee

Salary:

Not provided

Amla Commerce

Expiration Date

Until further notice

Requirements

Excellent knowledge of Microsoft Operating Systems and the Microsoft offerings across various product lines that can be utilized
To design, install, and administer virtualization products on premise & on Azure cloud
Excellent knowledge of Managing Google services
Excellent knowledge databases, patch management, and networks including LAN and WAN
Familiarity with modern operating systems and server platforms
Knowledge of network security systems, intrusion detection systems, and data backup
Designing and setting up continuous workflow & connected experience with Microsoft Apps, Office and Office 365 administration
Knowledge of all computer components and peripherals and must be adept at researching and coming up with best suited HW configurations (laptop, PC, Workstation, Server, Printer, conferencing system, Network systems, etc)
Must be adept at Identifying Products and SW (Laptops models, SWs, etc) by assessing on best access to Support, Service, cost of acquisition, maintenance, and upgrades/scalability also the richness of the ecosystem
Hands-on experience with Hardware Set-up/Networking setup. Must be adept at assembling PCs and workstations/local server setups

Job Responsibility

Effective provisioning, operation, installation / configuration, and maintenance of windows servers
Participate in technical research and development to enable continuing innovation within the windows system
Coordinate with senior members to understand goals and objectives
Accountable for windows systems that support infrastructure and Management.

Senior System Administrator

As a Senior System Administrator at Exor International, you will manage, maintai...

Location

Italy , San Giovanni Lupatoto

Salary:

Not provided

EXOR International

Expiration Date

Until further notice

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

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

Senior Systems Administrator

ExoAnalytic Solutions is seeking an exceptionally talented Senior Systems Admini...

Location

United States , El Segundo

Salary:

120000.00 - 150000.00 USD / Year

ExoAnalytic Solutions

Expiration Date

Until further notice

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

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

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

Senior System Administrator

We are seeking a highly qualified Senior System Administrator, known for their d...

Location

Canada , Brockville

Salary:

Not provided

Biscuits Leclerc Ltd

Expiration Date

Until further notice

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

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

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

Database Administrator - Senior

AnaVation is seeking a Database Administrator - Senior who will manage and optim...

Location

United States , Washington, DC

Salary:

Not provided

AnaVation

Expiration Date

Until further notice

Requirements

Minimum of 7 years experience with a Bachelor’s degree in Computer Science, Information Systems, or related field
Documented, demonstrated experience in database administration, including performance tuning and high availability
Proven troubleshooting and problem-solving skills with complex data and platform issues
Documented experience leading initiatives as an individual contributor and as a team lead/consultant
Hands-on experience implementing data policies, procedures, and standards in regulated or high-scale environments
Experience planning and developing enterprise data models and metadata/lineage practices
Track record resolving data conflicts and ensuring data quality across multiple sources/systems
Experience managing diverse data repositories (RDBMS, NoSQL, object storage) and governance tooling
Demonstrated success optimizing data warehouses, lakes, and other storage layers for performance and cost
A current Top Secret security clearance with SCI eligibility

Job Responsibility

Administer, maintain, and optimize SQL Server 2016+ databases
Monitor performance, analyze wait stats, tune queries, and manage indexes and statistics
Design, implement, and manage backup, recovery, and high availability/DR (e.g., AGs, log shipping)
Perform system administration tasks including patching, scripting, and server configuration
Automate routine operations using PowerShell or similar scripting tools
Collaborate with teams to support application releases and schema changes
Enforce database and system security with proper access controls, encryption, and auditing
Troubleshoot and resolve issues across production and non-production environments
Create and maintain clear documentation for procedures, configurations, and best practices

What we offer

Generous cost sharing for medical insurance for the employee and dependents
100% company paid dental insurance for employees and dependents
100% company paid long-term and short term disability insurance
100% company paid vision insurance for employees and dependents
401k plan with generous match and 100% immediate vesting
Competitive Pay
Generous paid leave and holiday package
Tuition and training reimbursement
Life and AD&D Insurance

Fulltime

Senior Systems Engineer

The Senior Systems Engineer (SSE) serves as the key resource for designing, impl...

Location

United States , Glastonbury

Salary:

Not provided

Kelser

Expiration Date

Until further notice

Requirements

Previous experience in an MSP or consulting role preferred
Advanced in-depth, hands-on experience with: Windows Server and Exchange Server support, implementation, administration, and migrations
AD administration and forest upgrades
Configuration and management of large and complex environments using Group Policy
Powershell - systems administration and basic scripting
Office 365 migrations, including tenant split/merge migrations
Microsoft Entra hybrid identity management
AWS, Azure, Hosted IaaS, PaaS offerings
Workstation build automation
Complex ESX support, implementation and administration

Job Responsibility

Support Kelser customers with project delivery, server monitoring and administration and pre- sales engineering support
Service delivery via excellent communication and customer service
Server and cloud infrastructure architecture and design
Attend and comprehend training
Ability to achieve higher level certifications
Stay current with emerging technologies and products
Availability for off-hours or on-call assignments
Other duties as determined by Kelser management

What we offer

Medical/Dental/Eye Care Insurance
Flexible Paid Time Off
Hybrid Schedule (3 days in office, 2 days remote)
401(k)
Profit-Sharing
Short Term/Long Term Disability Insurance
Free Parking
Life Insurance
Paid Holidays
Employee Purchase Program

Fulltime

Senior Systems Engineer

Kyber Security is seeking enthusiastic and motivated individuals to deliver proj...

Location

United States , Fairfield

Salary:

Not provided

Kyber Security

Expiration Date

Until further notice

Requirements

Experience working in a consulting and preferably managed services environment
Designs and supports somewhat complex networks using current technologies
Managed switching
Advanced firewall and security requirements specifically with SonicWALL
Windows Server 2008-2019 installation, administration and troubleshooting
Microsoft Active Directory (Trusts, Group Policy, Login Scripts, etc…)
Enterprise NAS/DAS/SAN Installation/Configuration/Troubleshooting
Cisco\HP layer 3 routing and VLAN segmentation
Exchange\Office 365 installations, administration, migrations and troubleshooting
Experienced in all and certified in some of the technologies within their purview

Job Responsibility

Scope, present and deliver successful client facing network projects
Mentor more junior engineers in advanced networking concepts
Provide escalated support to our internal engineers for client issues by troubleshooting and applying knowledge via helpdesk calls, service board tickets and email requests
Record and document work completed and in-progress
Travel to and from clients work sites with personal vehicle
After hours Escalation support rotation
Other duties as assigned

Fulltime

Senior Systems Security Engineer

AnaVation is looking for a Sr. Systems Security Engineer to assist the customer ...

Location

United States , Washington

Salary:

Not provided

AnaVation

Expiration Date

Until further notice

Requirements

5-10 years of experience in information system engineering and configuration management
5 years of experience in control implementation and secure system engineering or design
Excellent communication skills
Hands on experience with: Security monitoring and evaluation, including audits, assessments, and risk management
SIEM tools (e.g., Splunk)
Vulnerability Scanning tools (e.g., Tenable, Nessus)
EDR tools (e.g., Crowdstrike)
Web App Scanning tools (e.g., Burpsuite, Acunetix)
Active Directory
SANs

Job Responsibility

Performing hands-on engineering, administration, and securing of multiple operating systems (e.g., Windows, RHEL, Unix variants), and applying DISA STIGs across diverse vendor technologies, including virtualization platforms (VMWare, Hyper-V), cloud environments (AWS, Azure, Google Cloud), and enterprise applications
Perform system administration tasks to include audit and log management, availability monitoring and remediation, account management and access reviews, and configuration update scheduling and performance
Contribute to the design and development of secure system architectures, ensuring security is integrated through system and network lifecycles
Evaluate, implement, and document security architecture solutions, aligning with compliance requirements and organizational mission needs
Ensure technical compliance with applicable security frameworks, standards, and regulations (e.g., DISA SITGs, NIST 800-53, RMF)
Conducting, configuring, and managing vulnerability scans
Conducting vulnerability remediations, patching, and system hardening
Collaborate with ISSOs, Assessors, System Owners, and other stakeholders to implement security controls
Support security assessments, audits, and accreditation/authorization (ATO) activities
Document security configurations, engineering solutions, and compliance evidence

What we offer

Generous cost sharing for medical insurance for the employee and dependents
100% company paid dental insurance for employees and dependents
100% company paid long-term and short term disability insurance
100% company paid vision insurance for employees and dependents
401k plan with generous match and 100% immediate vesting
Competitive Pay
Generous paid leave and holiday package
Tuition and training reimbursement
Life and AD&D Insurance

Fulltime

Senior Windows System Administrator

Robert Half

Location:
United States , Los Altos

Category:
IT - Administration

Contract Type:
Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
April 06, 2026

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

Similar Jobs for Senior Windows System Administrator

Senior System Administrator

Senior System Administrator

Senior Systems Administrator

Senior System Administrator

Database Administrator - Senior

Senior Systems Engineer

Senior Systems Engineer

Senior Systems Security Engineer

Senior Windows System Administrator

Robert Half

Location:United States , Los Altos

Category:IT - Administration

Contract Type:Not provided

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:April 06, 2026

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

Similar Jobs for Senior Windows System Administrator

Senior System Administrator

Senior System Administrator

Senior Systems Administrator

Senior System Administrator

Database Administrator - Senior

Senior Systems Engineer

Senior Systems Engineer

Senior Systems Security Engineer

Location:
United States , Los Altos

Category:
IT - Administration

Contract Type:
Not provided

Job Posted:
April 06, 2026