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# Linux Systems Administrator

- **Company:** Seneca Resources
- **Location:** Birmingham, AL, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Amazon Web Services, Application Integration Architecture, Microsoft Azure, Backup Devices, Bash Shell, Microsoft Online Services, Software as a Service, Cloud Computing, Configuration Management, Computer Networks, Dynamic Host Configuration Protocol, Linux, Disaster Recovery, Domain Name System (DNS), VMware ESX Servers, Monitoring of Systems, Infrastructure as a Service (IaaS), IT Management, Network Security, Linux Servers, Windows Servers, Routing, Platform as a Service (PAAS), Performance Tuning, Windows PowerShell, Microsoft SharePoint, Systems Architecture, TCP/IP, User Provisioning Software, Virtualization Technology, VMware Virtualization, VMware VSphere, Software Vulnerability Management, Scripting, Reliability of Systems, Firewalls (Computer Science), Infrastructure Automation Frameworks, Storage Technologies, Information Technology, Data Management, Hardware Infrastructure, 3-tier Architectures
- **Published:** August 17, 2026
- **Apply:** https://public-rest40.bullhornstaffing.com/rest-services/R0SYP/query/JobBoardPost?where=id=47781&fields=id,title,publishedCategory(id,name),address(city,state),employmentType,dateLastPublished,publicDescription,isOpen,isPublic,isDeleted

## About the Role

* Bachelor's degree in Information Technology, Computer Science, Engineering, or a related field, or equivalent combination of education and experience.
 * 5+ years of experience in systems administration, infrastructure engineering, or enterprise IT operations.
 * Strong experience administering Windows Server and/or Linux operating systems in enterprise environments.
 * Hands-on experience with VMware vSphere/ESXi and virtualization technologies.
 * Experience supporting Microsoft 365 and Active Directory environments.
 * Proficiency with PowerShell, Bash, or other scripting languages used for automation and system administration.
 * Experience troubleshooting complex infrastructure, application, and performance-related issues.
 * Strong written and verbal communication skills with the ability to explain technical concepts to both technical and non-technical audiences.

Preferred Qualifications

 * Experience with cloud platforms such as Microsoft Azure or AWS.
 * Knowledge of networking concepts including TCP/IP, DNS, DHCP, routing, switching, firewalls, and network security.
 * Experience with SAN/storage technologies, backup solutions, and disaster recovery planning.
 * Exposure to infrastructure automation, configuration management, and monitoring tools.
 * Project leadership experience and a demonstrated ability to mentor team members.
 * Familiarity with enterprise security frameworks, vulnerability remediation, and infrastructure hardening practices.

## Description

About the Opportunity
We're seeking an experienced Senior Systems Administrator to join our enterprise IT team and play a critical role in the design, administration, optimization, and support of our infrastructure environment. This position is ideal for a highly skilled systems professional who thrives on solving complex technical challenges, improving system reliability, and driving infrastructure modernization initiatives.

As a senior member of the team, you will support and enhance a diverse technology ecosystem including Windows and Linux servers, VMware virtualization, Microsoft 365, Active Directory, cloud infrastructure, enterprise storage, and network-connected systems. You'll also serve as an escalation point for critical technical issues while mentoring junior team members.

What You'll Do

Infrastructure Administration & Operations

 * Administer, maintain, and optimize enterprise Windows and Linux server environments.
 * Manage VMware vSphere/ESXi infrastructure, including configuration, maintenance, performance tuning, and troubleshooting.
 * Support enterprise storage solutions, server hardware, virtualization platforms, and core infrastructure services.
 * Create and maintain system architecture diagrams, infrastructure documentation, and operational procedures.
 * Monitor system health, performance, availability, and capacity to ensure business continuity and reliability.

Microsoft & Identity Services

 * Administer and support Microsoft 365 services, including Exchange Online, Teams, SharePoint, OneDrive, and related technologies.
 * Manage Active Directory, Group Policy, user provisioning, permissions, and identity access controls.
 * Implement security best practices for authentication, authorization, and endpoint management.

Architecture, Cloud & Technical Leadership

 * Assist with infrastructure design, platform improvements, and technology roadmaps.
 * Support cloud-based solutions and services across IaaS, PaaS, and SaaS environments.
 * Evaluate system dependencies and application integrations to improve scalability, performance, and reliability.
 * Participate in disaster recovery, backup, and business continuity planning efforts.
*

 * Advanced Support & Collaboration
 * Serve as a Tier 3 escalation resource for complex infrastructure and endpoint issues.
 * Lead infrastructure upgrades, migrations, deployments, and system implementations.
 * Collaborate with project managers, developers, business stakeholders, and IT teams on strategic initiatives.
 * Mentor and guide junior administrators and technical support personnel.


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