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Top Senior System Administrator Jobs

6 Days Ago
Nashua, NH, USA
Hybrid
40,000 Employees
92K-157K Annually
Mid level
40,000 Employees
92K-157K Annually
Mid level
Aerospace • Hardware • Information Technology • Security • Software • Cybersecurity • Defense
The Sr System Administrator role involves supporting classified and unclassified lab environments, managing Windows and Linux systems, and implementing networked infrastructure. Responsibilities include system configuration, troubleshooting, responding to outages, and working with security staff to enforce compliance. Candidates need customer service skills and the ability to quickly learn new technologies.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+76 More
14 Days Ago
San Diego, CA, USA
Hybrid
40,000 Employees
127K-215K Annually
Senior level
40,000 Employees
127K-215K Annually
Senior level
Aerospace • Hardware • Information Technology • Security • Software • Cybersecurity • Defense
In this role, you will design, implement, and manage lab infrastructure to meet customer requirements, focusing on Linux server management, network design, system security hardening, and collaboration server maintenance. You will also handle system upgrades, performance monitoring, and scripting for automation while ensuring a 24x7 uptime service.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+76 More
16 Days Ago
Tempe, AZ, USA
Hybrid
600 Employees
Expert/Leader
600 Employees
Expert/Leader
Artificial Intelligence • eCommerce • Information Technology • Mobile • Payments • App development • Utilities
The Senior System Administrator will support and maintain KUBRA's PCI production environments, ensure uptime, and participate in planning and on-call rotations. Responsibilities include server monitoring, managing cloud platforms (AWS and Azure), improving automation with IaC tools, and supporting network infrastructure.
Top Benefits:
401-K
401-K Matching
Child Care Benefits
+58 More
3 Days Ago
Franklin, TN, USA
Hybrid
15,000 Employees
Senior level
15,000 Employees
Senior level
Automotive • Professional Services • Software • Consulting • Energy • Chemical • Renewable Energy
The Senior Software System Administrator is responsible for managing the daily operations of customer-facing infrastructure, maintaining system performance, ensuring downtime records and equipment inventory, troubleshooting issues related to Azure and on-premise environments, and managing security measures. This role also involves collaborating with vendors and stakeholders for enhancements and ensuring high availability of services.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+38 More
3 Days Ago
San Diego, CA, USA
Hybrid
26,000 Employees
123K-210K Annually
Mid level
26,000 Employees
123K-210K Annually
Mid level
Artificial Intelligence • Cloud • HR Tech • Information Technology • Productivity • Software • Automation
The Senior Linux System Admin will support on-premise customers, manage infrastructure needs for ServiceNow products, collaborate with teams for implementation, design scalable systems, and optimize performance while leading initiatives in technology research and implementation.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+62 More
4 Days Ago
Louise, TX, USA
10,975 Employees
Senior level
10,975 Employees
Senior level
Healthtech
Senior System Administrators manage and maintain IT infrastructure, oversee software functions, and ensure data transfers and connectivity. They provide technical support, create policies for documentation and problem-solving, and consult on complex business applications, often with limited oversight. This role requires extensive experience and involves both daily management and strategic improvements to the IT systems.
Top Benefits:
401-K
Dental Insurance
Disability Insurance
+11 More
4 Days Ago
Patuxent River Estates, MD, USA
1,413 Employees
95K-159K Annually
Mid level
1,413 Employees
95K-159K Annually
Mid level
Cloud • Information Technology
The Senior System Administrator will manage a 24x7 IT team at the Patuxent River Data Center, providing support, training, and documentation. Responsibilities include system monitoring, maintenance of Windows OS and Unix/Linux, physical security oversight, and ensuring effective communication during shift turnover and meetings.
4 Days Ago
Baltimore, MD, USA
378 Employees
Senior level
378 Employees
Senior level
Information Technology • Professional Services • Security
Support the design, configuration, and deployment of Windows Server environments, including installation and administration of Windows Server 2012 and 2008. Manage a virtualization environment using Microsoft technologies, troubleshoot network protocols, and develop server configurations and documentation.
Top Benefits:
401-K
Commuter Benefits
Company Outings
+12 More

Featured Jobs

4 Days Ago
Baltimore, MD, USA
378 Employees
Senior level
378 Employees
Senior level
Information Technology • Professional Services • Security
The Senior System Administrator is responsible for designing, configuring, and deploying Windows Server environments, including installation and administration of Windows Server 2012, Hyper-V, and server virtualization. They will also manage backup and disaster recovery strategies, document system operations, and collaborate with teams on complex upgrades and implementations.
Top Benefits:
401-K
Commuter Benefits
Company Outings
+12 More
4 Days Ago
White Sands, NM, USA
41 Employees
Senior level
41 Employees
Senior level
Professional Services
The Senior System Administrator provides support for hardware and software installations, configurations, and troubleshooting. Responsibilities include Tier 3 and 4 support for IT systems, managing passwords, maintaining servers and workstations, implementing IT security policies, and scripting solutions for database access. They monitor network traffic and resources, and ensure system efficiency across various IT platforms.
4 Days Ago
4 Locations
97,838 Employees
95K-190K Annually
Senior level
97,838 Employees
95K-190K Annually
Senior level
Healthtech
As a Senior System Administrator at Abbott, you will install, administer, and maintain EMR applications and web & service servers. Your responsibilities include configuration, deployment, monitoring, and ensuring high levels of security and performance for the systems. You'll work with other IT teams to enhance processes for faster software releases and manage troubleshooting and integration of various systems.
Top Benefits:
401-K
Adoption Assistance
Child Care Benefits
+22 More
4 Days Ago
Texas, USA
9,000 Employees
90K-105K Annually
Senior level
9,000 Employees
90K-105K Annually
Senior level
Artificial Intelligence • Machine Learning • Software
The Senior System Administrator will manage and drive the development and administration of the Totango/Catalyst platform, focusing on customization, user management, data architecture, automation, and integration with other systems, particularly Salesforce. They will also be responsible for reporting, training users, and vendor management.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+36 More
5 Days Ago
United States
Remote
1,079 Employees
100K-140K Annually
Senior level
1,079 Employees
100K-140K Annually
Senior level
Digital Media • Events • News + Entertainment
The Sr. Systems Admin is responsible for the design, configuration, management, and support of the technology environment at Cast & Crew. This includes all hardware, software, and systems used for development and deployment on servers, alongside providing technical support, system audits, and maintaining cloud infrastructure.
5 Days Ago
Boston, MA, USA
438 Employees
Senior level
438 Employees
Senior level
Financial Services
The Associate Director, System Administrator will be key in managing daily IT operations, ensuring system integrity, supporting infrastructure platforms, and refining support processes. Responsibilities include overseeing patching, backups, monitoring, documentation, troubleshooting, and fostering teamwork across technical services.
5 Days Ago
Rochelle Park, NJ, USA
34 Employees
Senior level
34 Employees
Senior level
Information Technology
The Senior System Administrator will develop, implement, and support various systems administration and network initiatives for clients. Responsibilities include troubleshooting, managing Office 365 and Azure, and ensuring effective operations of switches and firewalls.
7 Days Ago
United States
Remote
151 Employees
100K-140K Annually
Senior level
151 Employees
100K-140K Annually
Senior level
Fintech • News + Entertainment • Software
The Sr. System Admin is responsible for the design, configuration, management, and support of the company's technology environment, ensuring reliable operations of various systems, including infrastructure and cloud services. They provide technical support, conduct system audits, maintain data center technology, manage backup systems, and design automation methodologies.
Top Benefits:
401-K
Health Insurance
Remote Work Program
11 Days Ago
Rochelle Park, NJ, USA
34 Employees
Senior level
34 Employees
Senior level
Information Technology
The Senior System Administrator will provide service to clients, managing and supporting systems, implementing various initiatives, and troubleshooting issues across storage, servers, and networks. A strong knowledge in Windows System Administration, Network Administration, and Office 365 is required, along with proficiency in Azure and virtual technologies.
11 Days Ago
Columbia, SC, USA
27,104 Employees
90K-162K Annually
Senior level
27,104 Employees
90K-162K Annually
Senior level
Information Technology • Software
The role involves support for implementation, troubleshooting, and maintenance of IT systems, focusing on UNIX and Windows operating systems. Responsibilities include managing system infrastructure, user support, system optimization, and providing detailed analysis for internal customers. The position also requires maintaining compliance, security management, and resolving hardware issues.
Top Benefits:
401-K
Child Care Benefits
Company Outings
+17 More
13 Days Ago
Chantilly, VA, USA
110 Employees
Senior level
110 Employees
Senior level
Information Technology
The Senior System Administrator will support a Sponsor’s program by establishing server baselines, configuring and maintaining servers, installing security updates, and performing software updates. The role requires managing servers in both Commercial Cloud and traditional settings.
15 Days Ago
Elkridge, MD, USA
66 Employees
Expert/Leader
66 Employees
Expert/Leader
Big Data • Software • Analytics
Join ClearEdge as a Senior System Administrator to work with a platform team in providing essential and reliable systems for a great user experience. Responsibilities include implementing, troubleshooting, and maintaining IT systems, managing mission-critical systems, and optimizing system performance. Must have strong VMware skills and an Active or current TS/SCI Polygraph clearance. Ideal candidate is self-motivated, enjoys working in a technical team, and has a desire to learn new technologies.
4 Days Ago
Manchester, NH, USA
Hybrid
40,000 Employees
92K-157K Annually
Senior level
40,000 Employees
92K-157K Annually
Senior level
Aerospace • Hardware • Information Technology • Security • Software • Cybersecurity • Defense
As a Senior Systems Administrator, you'll support internal customers by designing, implementing, and managing lab infrastructure. Responsibilities include administering Linux servers, managing workgroup networks, applying system hardening standards, performing system upgrades, and collaborating on automation strategies while ensuring high service uptime and security compliance.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+76 More
2 Days Ago
United States of America
85,636 Employees
110K-165K Annually
Senior level
85,636 Employees
110K-165K Annually
Senior level
Aerospace • Logistics • Security • Software • Cybersecurity
The role involves testing and applying patches on software/application systems while coordinating with the cyber and compliance team to remediate vulnerabilities. Responsibilities include monitoring system compliance, administering patching solutions, and notifying users of upcoming patches and their impacts.
2 Days Ago
United States of America
85,636 Employees
110K-165K Annually
Senior level
85,636 Employees
110K-165K Annually
Senior level
Aerospace • Logistics • Security • Software • Cybersecurity
The role involves deploying and maintaining directory services including Active Directory, certificate authorities, and account management within an enterprise. The candidate will monitor system health, manage security policies and collaborate with cyber teams to ensure compliance and system integrity.
24 Days Ago
Boston, MA, USA
22 Employees
Senior level
22 Employees
Senior level
Consulting
As a Senior System Administrator, you will support server and desktop operating systems, manage backup and anti-virus solutions, and handle virtualization technologies. You will also configure and troubleshoot server hardware and lead initiatives within a team. Strong communication skills and strategic thinking are essential.
4 Days Ago
Grand Rapids, MI, USA
172 Employees
Junior
172 Employees
Junior
Other
The Senior SAP System Administrator will strategize, maintain, and optimize SAP Business One ERP and associated systems. Responsibilities include improving processes, onboarding employees, managing queries and reporting, and supporting system integration with tools like Salesforce and Tableau. The role requires strong analytical skills and problem-solving abilities to enhance business operations.
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