Sr. System Administrator

Concept Plus

$95K — $115K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • US Citizenship required
  • Full on-site support at client office locations
  • 5+ years of strong experience in IT environments
  • Excellent communication skills for end-user interactions
  • Must be able to maintain Public Trust Clearance (Clearable)

Responsibilities

  • Troubleshoot and support basic network issues, including Cisco hardware
  • Manage Active Directory functions such as user account modifications
  • Administer and support Google Workspace accounts and settings
  • Provide advanced Windows workstation and endpoint troubleshooting
  • Conduct hardware support and repair for peripherals and devices
  • Document IT resolutions and update knowledge base articles
  • Support video conferencing systems and manage meeting technology

Benefits

  • Opportunities for professional development and certification
  • Collaborative and inclusive work environment
  • Potential for advancement within the organization
  • Supportive team culture focused on continuous improvement
  • Centrally located office with easy access to public transport
Full Job Description
About the role

Concept Plus is seeking a Senior System Administrator to act as on-site support for a client system

What you'll do

Network Troubleshooting & Support

  • Basic understanding of Layer 1, 2, and 3 support. Basic knowledge of Cisco hardware and OS. WiFi troubleshooting. Knowledge of Ethernet and fiber wiring, including basic troubleshooting.

Active Directory & Identity Management

  • Creating, modifying, and deleting user accounts for staff onboarding/offboarding
  • Putting accounts in other OUs for CAC Waiver or other reasons
  • Diagnosing account lockout sources (identifying which device/service is triggering lockouts)
  • Managing Organizational Unit (OU) placement for new users and computers
  • Troubleshooting login/authentication failures
  • Managing service accounts and delegated permissions
  • Joining/rejoining workstations to the domain
  • Configuring and troubleshooting mapped network drives

Google Workspace Administration & Support

  • Account & Identity
    • Provisioning/deprovisioning Google Workspace accounts
    • Troubleshooting Single Sign-On (SSO) / SAML integration
    • Helping staff members with Google account passwords and 2-Step Verification (2FA) issues
  • Gmail / Email
    • Diagnosing email delivery failures (bounce-backs, spam filtering, blacklisting)
    • Configuring and troubleshooting email forwarding and filters
    • Troubleshooting shared inbox and group email access
  • Calendars, Drive, and Apps
    • Troubleshooting shared calendar permissions and resource calendars (e.g., conference room booking)
    • Resolving Google Drive sync issues (Drive for Desktop)
    • Managing Shared Drive permissions and access
    • Troubleshooting Google Forms, Sheets, Docs sharing and permission errors
    • Investigating storage quota issues
    • Troubleshooting offline access and sync conflicts

Windows Workstation & Endpoint Support

  • Advanced OS troubleshooting (boot failures, blue screens/BSOD analysis)
  • Windows profile corruption repair/rebuilding
  • Registry edits for application or system issues
  • Driver installation, updates, and rollback
  • Diagnosing performance issues (high CPU/memory/disk, startup bloat)
  • Windows Update failures and manual patching
  • Application installation, configuration, and repair (beyond standard packages)
  • Disk cleanup, defragmentation, and storage management
  • BitLocker encryption troubleshooting and recovery key management
  • Configuring VPN clients and diagnosing connectivity issues
  • Imaging and reimaging workstations
  • Backup and data migration during staff member hardware upgrades

Hardware Support & Repair

  • Peripheral troubleshooting (printers, scanners, docking stations, multi-monitor configurations)
  • Printer driver installation and print queue/spooler troubleshooting
  • Setting up and configuring new workstations and laptops
  • Diagnosing power and charging issues on laptops
  • Computer and peripheral firmware updates and issues that arise

Network & Connectivity (Tier 2 Scope)

  • Troubleshooting wired/wireless connectivity for endpoints
  • Diagnosing DNS and DHCP client-side issues (ipconfig, nslookup, ping, tracert)
  • Configuring and troubleshooting network printers
  • Resolving Wi-Fi authentication issues with NWAVE
  • Basic switch port connection troubleshooting and verification (possibly escalating to Tier 3)

VTC / Conference Room / Google Meet Support

  • Google Meet Hardware Kit
    • Troubleshooting Google Meet hardware kits compute unit (Chromebox/Chromebase) issues
    • Firmware and software updates for Meet hardware that brick them
    • Troubleshooting touch controller/tablet connectivity and pairing
    • Resolving room calendar sync issues on Meet devices
  • Audio/Video
    • Troubleshooting camera issues (no video, poor quality, framing/auto-zoom)
    • Diagnosing microphone and speaker problems (no audio, echo, feedback)
    • Configuring and troubleshooting speaker bars/mics
    • Resolving audio routing and input/output device selection issues in big conference room
    • Trouble shoot Crestron audio video switcher
  • Displays & Projectors
    • Troubleshooting projector connectivity (HDMI, wireless casting)
    • Diagnosing display/resolution/scaling issues
    • Managing screen sharing and presentation failures
    • Bulb/lamp and projector maintenance coordination
    • TV/monitor input and signal troubleshooting
  • Meetings & Connectivity
    • Diagnosing Google Meet join failures and dropped calls
    • Troubleshooting bandwidth/network quality issues affecting meetings
    • Configuring interoperability with other VTC platforms (Zoom, Teams) if applicable
    • Testing and validating rooms before high-priority meetings
    • Cable management and physical connection troubleshooting
    • Supporting live meetings/VIP events and on-site event coverage

Ticketing, Documentation & Process

  • Documenting resolutions and updating knowledge base articles and IT SOP
  • Creating internal how-to guides and troubleshooting scripts for Tier 1
  • Root cause documentation for recurring issues
  • Following up on long-running tickets and coordinating with users
  • Mentoring/coaching Tier 1 staff

Additional Responsibilities

  • License management and software asset tracking
  • Certificate installation and renewal on endpoints
  • Mobile device support (email/app configuration, MDM enrollment)
  • Verizon Wireless Business account phone management
  • Coordinating with vendors for warranty and support cases
  • Testing and piloting new hardware/software before wider deployment


Required Qualifications

  • US Citizen
  • Fully Onsite support at client office locations
  • Strong IT environment experience
  • Must be able to work with end-users, communicate clearly, and meet deadlines
  • Must be able to maintain Public Trust Clearance (Clearable)

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