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System Administrator

Job in City Of London, Central London, Greater London, England, UK
Listing for: M.C. Dean, Inc.
Full Time position
Listed on 2026-06-05
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Engineer
Salary/Wage Range or Industry Benchmark: 60000 - 80000 GBP Yearly GBP 60000.00 80000.00 YEAR
Job Description & How to Apply Below
Position: System Administrator 1
Location: City Of London

About M.C. Dean

M.C. Dean is Building Intelligence®. We design, build, operate, and maintain cyber‑physical solutions for the nation’s most mission‑critical facilities, secure environments, complex infrastructure, and global enterprises. With over 9,000 employees, our capabilities span electrical, electronic security, telecommunications, life safety, automation and controls, audiovisual, and IT systems. Headquarters in Tysons, Virginia, M.C. Dean delivers resilient, secure, and innovative power and technology solutions through engineering expertise and smart systems integration.

Position

Summary

System Administrator 1 – Security and Electronic Systems (SES) Business Unit. Part of the Programming, Commissioning and Deployment (PCD) team, responsible for configuring and maintaining Physical Access Control, CCTV, PSIM, and other electronic security systems. Provides Tier 1 help desk support and supports regional and international teams on projects.

Responsibilities
  • Install, configure, and troubleshoot CCTV, Physical Access Control, communications, and other Enterprise Physical Security systems.
  • Manage and execute allocated PCD jobs, providing status updates to team leadership and escalating as needed.
  • Participate in AI and other initiatives to evolve team and program.
  • Support daily operations, including monitoring and reviewing system logs.
  • Stay current with technological developments and recommend new or emerging technology.
  • Contribute to technical documentation such as standard operating procedures and build documents for technical and non‑technical audiences.
  • Perform all duties under direct supervision.
  • Participate in inter‑regional “Foreign Exchange” visits with sister teams in the USA to share knowledge and drive global team cohesion.
Qualifications
  • BS degree and 0+ years of progressive experience; or HS Diploma/Equivalent and 6+ years of progressive experience.
  • System administrator experience performing triage on system problems, resolving issues, analyzing data to prevent problems, implementing new workstations, and system extensions.
  • Demonstrated understanding of Windows patching and vulnerability remediation.
  • Basic knowledge of large‑scale networking, VLANs, and routing.
  • Reliable attendance at customer sites during required hours.
  • Ability to work flexible shifts that include nights, weekends, holidays, and on‑call as needed.
  • Minimum IAT Level II certification (e.g., Security+).
  • Background working with multidisciplinary teams.
  • Time management and organizational skills to meet deadlines and quality objectives.
  • Proficiency with MS Excel, Word, Visio, and PowerPoint.
What We Offer
  • A collaborative team inspired by engineering and innovation to enhance customer outcomes.
  • Opportunity to lead and build a business with support from a 75‑year‑old, industry‑leading firm.
  • Investment in skills through professional and technical training programs, including leadership training and tuition reimbursement.
  • Open and transparent communication with senior leadership and local office management.
Abilities
  • Extended exposure to computer screens.
  • Sitting for extended periods.
  • Reach by extending hands or arms in any direction.
  • Finger dexterity to manipulate objects with fingers.
  • Listen to and understand spoken information.
  • Communicate information effectively in speaking.
  • Read and understand written information.
  • Apply general rules to specific problems to produce logical answers.
  • Identify and understand the speech of another person.
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