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

M.C. Dean, Inc.; Fremont (CA); On-site; USD 99,680 - 149,520; Full time

Benefits offered by this job

Medical, dental, vision insurance

Paid time off

401(k) retirement plan

Tuition reimbursement

Paid maternity leave

Job summary

M.C. Dean, Inc. is looking for a Core Infrastructure System Administrator for their Security and Electronic Systems unit in Fremont, California. This role focuses on maintaining electronic security services such as access control and video surveillance, requiring both technical expertise and leadership skills.

The ideal candidate will have a Bachelor's Degree with at least 2 years of relevant experience, along with necessary certifications like Security + or CISSP. M.C. Dean offers competitive salary and benefits including medical insurance and tuition reimbursement.

Qualifications

• 2+ years of system administrator experience, resolving system problems and managing small teams.
• Minimum of Security + Certification, CASP, or CISSP certification.
• Proficient in MS Office tools including Excel, Word, Visio, and PowerPoint.

Responsibilities

• Maintain production systems, software, and hardware.
• Install, configure, and support Windows and Linux servers.
• Document troubleshooting processes to create and update playbooks.
• Monitor systems for errors and alerts.

Skills

System administration

Access Control Systems

Windows Active Directory

VLANs and routing

MS Excel

MS Word

MS Visio

MS PowerPoint

Education

Bachelor's Degree

Associate's Degree

High School Diploma

Job description

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.

Why Join Us?

Our people are passionate about engineering innovation that improves lives and drives impactful change. Guided by our core values—agility, expertise, and trust—we foster a collaborative and forward‑thinking work environment. At M.C. Dean, we are committed to building the next generation of technical leaders in electrical, engineering, and cybersecurity industries.

Position

Core Infrastructure System Administrator (System Administrator) – Security and Electronic Systems (SES) business unit. As part of the SES Strategic Business Unit, you will be part of a team that designs, engineers, integrates, operates and maintains electronic security services including 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 various 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 per week; 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

• Education/Experience:
• • Bachelor’s Degree and 2+ Years of progressive experience • Associate’s Degree and 6+ Years of progressive experience • HS Diploma or Equivalent and 8+ Years of progressive experience
• • System administrator experience in performing triage on system problems, resolving the system problems, analyzing system data to prevent problems, implementing new workstations, and system extensions.
• • 2+ years of experience programming/administrating Physical Access Control Systems.
• • Demonstrated previous experience effectively managing small teams.
• • Demonstrated understanding of Windows patching and vulnerability remediation.
• • Demonstrated advanced knowledge of Windows Active Directory hierarchy and implementation.
• • Basic knowledge of large‑scale networking, VLANs, and routing.
• • Reliable attendance at customer site during work hours required by customer.
• • Ability to work flexible shifts that include nights, weekends, and holidays as needed.
• • Minimum of Security + Certification, CASP, or CISSP certification.
• • Demonstrated background working with multidisciplinary teams.
• • Demonstrated time management and organization skills to meet deadlines and quality objectives.
• • Proficient in MS Excel, Word, Visio, and PowerPoint.

Travel

• Up to 25% annual

We Offer

• A collaborative team inspired by the way engineering and innovation enhance customer outcomes, improve lives, and change the world for the better.
• An opportunity to lead and build a business with the support of an industry‑leading firm that has been in business for 75 years.
• Investment in your skills and expertise through a combination of professional and technical training programs, including leadership training and tuition reimbursement.
• Open and transparent communication with senior leadership as well as local office management.

Benefits

• 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 an extended period of time.
• Sitting for extended periods of time.
• Reach by extending hands or arms in any direction.
• Finger dexterity to manipulate objects with fingers, e.g., using a keyboard.
• Listen to and understand information presented verbally.
• Communicate information verbally so others will understand.
• Read and understand information presented in writing.
• Apply general rules to specific problems to produce reasonable answers.
• Identify and understand the speech of another person.

Pay Range: USD $99,680.00 – USD $149,520.00 /Yr.