Core Infrastructure System Administrator (System Administrator 2) - Fremont, CA

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. Core Infrastructure System Administrator (System Administrator) We are seeking a Core Infrastructure System Administrator to join our Security and Electronic Systems (SES) business unit. You will be part of a team that designs, engineers, integrates, operates and maintains electronic security services inclusive of intrusion-detection, access control, biometric authentication, video surveillance, audio-visual, IT systems, perimeter defense, and command-and-control systems for federal, local, and commercial customers across high‑growth markets. Responsibilities Maintaining production systems, software, hardware, and end devices. Installation, configuration, maintenance, and support of physical and cloud-based Windows and Linux servers. Ensuring the security, integrity, and availability of systems. Monitoring operational systems for errors and alerts. Troubleshooting, adding, configuring, and removing technologies related to access control, intrusion detection, emergency, video, and other security systems. Documenting daily functions and troubleshooting processes to create and revise playbooks. Work Schedule Required time in the office 3 days/week. Some surge support may be required during peak operational periods, potentially including extended hours or weekend support. On‑site requirements are subject to change and could increase at any time. Qualifications Bachelor’s Degree and 2+ years of progressive experience, or Associate’s Degree and 6+ years of progressive experience, or HS Diploma or Equivalent and 8+ years of progressive experience. System administrator experience in triage, resolution, data analysis to prevent issues, implementation of workstations, and system extensions. 2+ years of experience programming/administrating Physical Access Control Systems. Leadership experience managing small teams. Experience with Windows patching and vulnerability remediation. Advanced knowledge of Windows Active Directory hierarchy and implementation. Basic knowledge of large‑scale networking, VLANs, and routing. Reliable attendance at customer site during required work hours. Flexible shift work including nights, weekends, and holidays as needed. Minimum of Security+ Certification, CASP, or CISSP certification. Background working with multidisciplinary teams. Time‑management and organization skills to meet deadlines and quality objectives. Proficiency in MS Excel, Word, Visio, and PowerPoint. Travel Up to 25% annual travel, including CONUS and OCONUS locations. What We Offer A collaborative team inspired by engineering and innovation that enhances customer outcomes. Opportunity to lead and build a business with support of an industry‑leading firm that has been in business for 75 years. Investment in your skills and expertise through professional and technical training programs, including leadership training and tuition reimbursement. Open and transparent communication with senior leadership and local office management. Benefits Package Competitive salary. Medical, dental, vision, life, and disability insurance. Paid time off. Tuition reimbursement. 401(k) retirement plan. Military Reserve pay offset. Paid maternity leave. Abilities Exposure to computer screens for extended periods. 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 and ideas. Communicate information orally so that others understand. Read and understand written information and ideas. Apply general rules to specific problems to produce solutions. Identify and understand the speech of another person. Pay Range USD $99,680.00 – $149,520.00 /Yr. #J-18808-Ljbffr M.C. Dean, Inc.