Systems Administrator

Job Title: Systems Administrator

Location: Oklahoma City, OK (on-site)

Salary Range: $65,000 - $90,000 / Annually depending on experience.

Benefits: The position is eligible for medical, dental, vision, and 401(k).

**Onsiterequirement - Must be authorized to work in the United States. Position is not eligible for sponsorship.

Overview

We’re looking for a well-rounded, hands-on Systems Administrator to manage our network and virtual infrastructure while providing full-spectrum IT support. In this small, collaborative IT team, you’ll support a wide range of systems and technologies, handling everything from Tier 1 help desk tickets to advanced VMware administration, Microsoft 365 support, and disaster recovery.

This role is ideal for someone who has supported small to medium-sized businesses or has worked in an outsourced IT environment, where versatility and exposure to diverse platforms are part of the day-to-day role.

Responsibilities

• Administer VMware, vSphere, and vCenter environments, including virtual machine provisioning, patching, and performance optimization
• Manage and support Microsoft 365 services, including user accounts, access controls, and security features
• Support and maintain Windows, Linux, and macOS systems across server and endpoint environments
• Manage network infrastructure including switches, routers, firewalls, and wireless systems to ensure uptime and reliability
• Oversee backup, recovery, and disaster recovery processes to protect critical business data
• Maintain endpoint security, multi-factor authentication, DNS-level protections, and system hardening
• Provide Tier 1–3 support for hardware, software, and system issues across the organization
• Document systems, configurations, and procedures while identifying opportunities for process improvement
• Balance daily support needs with long-term infrastructure stability and optimization efforts

Qualifications

• Hands-on experience with virtual machines and virtualized server environments
• Experience administering Microsoft 365 in a production environment
• Working knowledge of Linux and macOS alongside Windows systems
• Strong background in network administration and troubleshooting
• Experience supporting small to mid-sized environments or outsourced IT models
• Ability to take initiative, prioritize tasks, and operate independently in a small-team setting
• Strong problem-solving, communication, and documentation skills

No 3rd parties.

Why choose Addison Group?

·Pay: We negotiate high salaries using U.S. Bureau of Labor Statistics

·Benefits & Bonuses: You are eligible for medical, dental, vision insurance benefits, 401K, and monetary bonuses

·Permanent Employment: Many of Addison’s job openings lead to potential permanent employment

·Connections: You connect directly with hiring managers from renowned organizations

·Options: You are presented with multiple employment options near your home

·Professional Development: You are provided hiring process advice, resume revision, and employment term negotiation

Addison Group is an Equal Opportunity Employer. Addison Group provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, gender, sexual orientation, national origin, age, disability, genetic information, marital status, amnesty, or status as a covered veteran in accordance with applicable federal, state, and local laws. Addison Group complies with applicable state and local laws governing non-discrimination in employment in every location in which the company has facilities. Reasonable accommodation is available for qualified individuals with disabilities, upon request.