Senior systems administrator

Job Description

Sr. Systems Administrator is responsible for leading the design, implementation, maintenance, and optimization of an organization’s IT infrastructure. This role ensures the reliability, security, and scalability of systems and networks while providing advanced technical support and mentoring to junior staff. The Senior System Administrator collaborates with IT leadership and cross-functional teams to plan and execute system upgrades, cloud integrations, and enterprise-level projects.

Responsibilities:

• Design, implement, and maintain enterprise IT systems, including servers, storage, virtualization, and network infrastructure.
• Ensure system performance, availability, and security across on-premises, cloud, and hybrid environments.
• Plan and execute system upgrades, migrations, and consolidations.
• Monitor system performance, and capacity, proactively addressing issues.
• Develop and maintain backup, disaster recovery, and business continuity processes.
• Implement and enforce security policies, patch management, and vulnerability remediation.
• Provide expert-level support for complex technical issues across systems, networks, and applications.
• Guide and mentor junior administrators and IT support staff.
• Serve as escalation point for critical incidents and outages.

Qualifications:

• Advanced expertise in Windows Server, Linux/Unix, and hybrid IT environments.
• Knowledge of networking, firewalls, storage solutions, and virtualization (VMware, Hyper-V).
• Experience with cloud platforms (AWS, Azure, Google Cloud) and cloud migration strategies.
• Proficiency in scripting and automation (PowerShell, Bash, Python, Ansible, Terraform).
• Strong understanding of security principles, identity/access management, and compliance standards.
• Bachelor’s degree in Information Technology, Computer Science, Network Engineering, or a related technical field preferred.
• 5+ years of experience administering enterprise infrastructure, distributed systems, or hybrid cloud environments.
• Strong hands-on experience with AWS, Microsoft Azure, Windows Server, Active Directory/Azure Active Directory, and Microsoft 365.
• Strong understanding of enterprise networking, including TCP/IP, DNS, DHCP, switching, routing, wireless networking, VPNs, and firewalls.
• Excellent troubleshooting, systems analysis, and problem-solving skills, with the ability to diagnose complex issues across infrastructure, networking, cloud, and business systems.
• Experience leading technical projects and working independently in a fast-paced, growing environment.
• Strong communication skills and the ability to collaborate effectively with both technical and business teams.

Benefits:

• Health Care Plan (Medical, Dental & Vision)
• Retirement Plan (401k, IRA)
• Paid Time Off (Vacation, Sick & Public Holidays)
• Short Term & Long Term Disability
• Training & Development
• Work From Home
• Wellness Resources