Tier 1 Security & IT Systems Administrator

M.C. Dean, Inc.; Greater London; Hybrid; GBP 38,000 - 60,000; Full time

Benefits offered by this job

Tuition reimbursement

Leadership training

Transparent leadership communication

Job summary

System Administrator 1 at M.C. Dean, Inc. in the United Kingdom seeks a hands-on IT professional to monitor and support electronic security and IT systems.

You will perform triage, patching, and problem analysis while maintaining Windows environments and security updates, ensuring continuous operations for federal, local, and commercial customers. You will work with intrusion detection, CCTV, PSIM, and other security technologies, providing user support, documenting steps, and contributing to

Qualifications

• BS degree or equivalent and relevant IT experience.
• HS Diploma with 6+ years progressive IT experience acceptable.
• Experience triaging system problems and proactive remediation.

Responsibilities

• Monitor and maintain physical access control, CCTV, and PSIM systems.
• Provide Tier-1 helpdesk support and initial triage of IT issues.
• Document troubleshooting steps in ticketing system and escalate as needed.
• Monitor enterprise system status and notify senior admins of outages.
• Support configuration and management of Windows OS and security updates.
• Assist in backups, logs review, and IA/STIG compliance tasks.
• Contribute to SOPs and technical documentation.

Skills

Windows patching

Vulnerability remediation

Networking basics (VLANS & routing)

End-user support

Windows OS administration

Documentation & SOPs

Effective communication

Education

BS degree or higher

HS Diploma or Equivalent with 6+ years experience

Tools

Ticketing system

MS Excel

MS Word

Visio

PowerPoint

Job description

System Administrator 1 at M.C. Dean, Inc. in the United Kingdom seeks a hands-on IT professional to monitor and support electronic security and IT systems.

You will perform triage, patching, and problem analysis while maintaining Windows environments and security updates, ensuring continuous operations for federal, local, and commercial customers. You will work with intrusion detection, CCTV, PSIM, and other security technologies, providing user support, documenting steps, and contributing to