Demo

Systems Administrator

Sellers & Associates, LLC
San Diego, CA Full Time
POSTED ON 12/26/2025
AVAILABLE BEFORE 1/26/2026
Who We Are
Sellers & Associates, LLC (S&A) is a Veteran Owned Small Business (VOSB) that provides effective and affordable Programmatic and Engineering Support Services and Solutions to our Government and Commercial Clients. We work directly with our clients taking the time to understand their culture and requirements designing a custom solution tailored to meet their unique needs at an affordable price without sacrificing quality. Our specialties include Program/Engineering Management, Training/Training Technology, Technology/Product Development Strategy and Analysis, Project Management (Cost, Schedule, Scope & Quality), and Strategic Planning applied within our clients' unique domains and context.
Benefits
We have Medical, Dental, Vision, 401k with company match. Long/Short Term Disability and Life Insurance. 25 days of PTO per year. Employees may choose to work or take PTO on Federal Holidays (pending contract requirements). We also offer a TRICARE Supplement Insurance Package as well as Tuition Reimbursement up to $5,250 per year for areas of study relevant to employee position responsibilities and opportunities for professional growth.
Position Description
Job Title / Labor Category Title
Systems Administrator
Location
San Diego, CA US (Primary)
Security Clearance Requirements
Must be Able to Obtain a Clearance
Job Description

We are seeking a Systems Administrator to join our team in San Diego, CA (on-site).

Responsibilities:

  • Implement and maintain CMMC & NIST 800-171 compliance.
  • Image development and remote deployment.
  • Provide system administration for infrastructure while establishing and maintaining security as it relates to users.
  • Lead and complete a diverse set of IT projects (software deployments, system migrations, updates, networking configurations, facility build outs, audio/video install).
  • Exhibit a track record of solid IT systems knowledge with hardware, software, network printers, server, VM, and other network technology.
  • Participate in onboarding of new hires through electronic presentation; ensure that new hires have functioning computers and are aware of how to use them according to company policies and guidelines.
  • Install, upgrade, configure, test, maintain and support operating system software and associated applications in a production environment.
  • Create & maintain all configuration documentation.
  • Perform daily system monitoring, verifying the integrity and availability of all hardware, server resources, systems, and key processes, reviewing system and application logs, and verifying completion of scheduled jobs such as backups.
  • Local/Remote Network Management and configuration (Cisco switches, Ubiquiti routers, Aruba IAP's, Blade servers/VM's).
  • Design, implement and maintain SIEM, security baseline configuration for O365 GCC High, Intune & Azure Active Directory Group Policy Settings.
  • Conference room audio/video install & maintenance.
  • Analyze, troubleshoot, and resolve issues with IT infrastructure including user systems, servers, audio/video, and storage and network connectivity.
  • Inventory Management with the use of asset tagging and auditing.
  • Review system and security logs to locate and investigate anomalies.
  • Apply security patches to applications and operating systems.
Job Requirements

Basic Qualifications:

  • Ability to obtain a Secret security clearance
  • CompTIA Security Certification
  • Ability to run new Cat6 wiring in Ceilings, walls, and floors (interior and exterior) while applying proper termination techniques.
  • Knowledge and ability to mount flat screen TV's to various wall surfaces.
  • Strong work ethic and excellent organizational skills
  • Possess a high degree of originality, creativity, initiative requiring minimal supervision
  • Experience in managing, configuring, and troubleshooting Windows Server Operating Systems, Active Directory, Azure, Intune, and Networking to include Cisco CLI usage
  • Strong knowledge of networking and security concepts including routing, switching, VLANs, firewalls, and SNMP monitoring
  • Strong technical, analytical, and trouble-shooting skills with ability to communicate technical information to non-technical end-users
  • Facility rough-in experience
  • CMMC/NIST 800-171 experience
  • Database, cloud application, software development, or website development experience is a plus.
  • PC Watercooling build experience a plus.
Required Knowledge, Skills, & Abilities (KSAs)
Travel %
0 - 10%
Sellers and Associates, LLC is an E-Verify company and an Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.

We are an E-Verify company and an Equal Opportunity Employer of Minorities, Females, Protected Veterans, and Individuals with Disabilities.


 

Salary : $5,250

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