M.C. Dean

Designs and deploys secure mission-critical infrastructure

IT Systems Engineer 3

System AdministrationConfirmed live in the last 24 hours

Full-timeFalls Church, VA, USA$104k - $143k /yrIn-person

About the Job

Requirements

A bachelor's degree and at least five years of progressive experience in Computer Science, Electrical Engineering, Mechanical Engineering, or a related Engineering/IT discipline.
Some experience eliciting requirements, conducting research, and designing, testing, and implementing hardware and software solutions for virtual infrastructure technologies.
Engineering experience with some of the following platforms and services: VMware ESXi and vSphere; Microsoft Windows Server deployment and administration; Microsoft Windows 11 deployment and administration; DNS, DFS, and DHCP; Windows Server Update Services (WSUS) and Key Management Service (KMS); Active Directory and defining, implementing, and maintaining Group Policy; and Microsoft Endpoint Configuration Manager (MECM).
Experience performing security scans, system updates, and security configurations such as DISA STIG/SRGs for system hardware and software.
Some experience virtualizing enterprise applications such as Active Directory, Microsoft SQL, RHEL, and Microsoft SharePoint.
Some experience with API management and scripting languages including PowerShell, Python, JSON, and Bash.
Meet DoD 8570 IAT Level-II requirements.
Demonstrated background working with multidisciplinary teams.
Demonstrated time-management and organizational skills to meet deadlines and quality objectives.
Strong skills in Microsoft Excel, Word, PowerPoint, and Visio.
Be a U.S. citizen with an adjudicated U.S. Secret clearance; active Secret clearance is required.
Meet the physical and sensory abilities stated, including prolonged screen exposure and sitting, reaching and finger dexterity, listening and speaking comprehension, reading comprehension, applying general rules to specific problems, and identifying and understanding another person's speech.

Responsibilities

Work closely with stakeholders to gather technical requirements, architect solutions, execute deliverables, and communicate solutions to the technical program team and end-customer stakeholders.
Conduct analysis, evaluation, engineering, and implementation of system improvements, automation, optimization, and deployments.
Develop infrastructure-environment designs and architectural changes, including physical and logical drawings, engineering design plans, implementation plans, transition plans, test plans, and failover plans.
Perform security updates to hardware and software to ensure the security posture across all implemented and managed systems.

Desired Qualifications

Experience administering OCSP, such as Axway Validation Authority or Microsoft OCSP Responder.
Experience troubleshooting and optimizing the Trellix security product suite, including Endpoint Security, DLP, and HIPS.
Experience designing and deploying SQL database infrastructure such as Microsoft SQL Server.
Experience engineering and implementing platforms and services in a software-defined network environment.
Vendor certifications in VMware, Cisco, Microsoft, NetApp, or similar.

Overview

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.

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.

We are seeking a IT-oriented System Engineer 3 to join our Security and Electronic Systems (SES) business Unit. As part of (SES) Strategic Business Unit you will be part of a dynamic team responsible for the design, implementation, operations & maintenance, and cybersecurity for large complex resilient hardware and virtualized infrastructure to ensure implemented solutions meet stakeholder needs, standards, and performance requirements.

Responsibilities

Position Summary:

Work closely with stakeholders to gather technical requirements, architect solutions, execute on deliverables, and communicate solutions to the entire technical program team and to end-customer stakeholders.
Conduct analysis, evaluation, engineering, and implementation of system improvements, automation, optimization, and deployments.
Develop designs and architectural changes to infrastructure environments including physical/logical drawings, engineering design plans, implementation plans, transition plans, test plans, and failover plans.
Perform security updates to hardware and software to ensure the security posture across all systems implemented and managed.

Qualifications

Clearance/Citizen Type: Applicants selected will be subject to a government security investigation and must meet eligibility requirements, including U.S. Citizenship, for access to classified information; active Secret Clearance is required.

Work Type: Full-time

Position / Candidate Requirements:

U.S. Citizen with adjudicated U.S. Secret Clearance.
Bachelors Degree and 5+ years of progressive experience. Computer Science, Electrical Engineering, Mechanical, or a Related Engineering/IT Discipline.
Some experience eliciting requirements, conducting research, designing, testing, and implementing hardware and software solutions for virtual infrastructure technologies.
Engineering experience with some of the following core platforms and services:
- VMware ESXi and vSphere.
- Microsoft Windows Server Deployment and Administration.
- Microsoft Windows 11 Deployment and Administration.
- DNS, DFS, and DHCP.
- Windows Server Update Services (WSUS), Key Management Service (KMS)
- Active Directory and defining, implementing, and maintaining Group Policy.
- Microsoft Endpoint Configuration Manager (MECM).
Experience performing security scans, performing system updates, and applying security configurations, e.g., DISA STIG/SRGs to system hardware and software.
Some experience virtualizing enterprise applications (Active Directory, MS SQL, RHEL, MS SharePoint, etc.).
Some experience with API management, scripting languages including PowerShell, Python, JSON, Bash, etc.
Meet DoD 8570 IAT Level-II requirements.
Demonstrated background working with multidisciplinary teams.
Demonstrated time management and organization skills to meet deadlines and quality objectives.
Strong MS Excel, Word, PowerPoint, and Visio Skills.

Desired / Advantageous Qualifications and Experience:

Experience administering OCSP (e.g. Axway Validation Authority, Microsoft OCSP Responder).
Experience troubleshooting and optimizing the Trellix security product suite (Endpoint Security, DLP, HIPS, etc.).
Experience designing and deploying SQL Database Infrastructure such as Microsoft SQL Server.
Experience engineering and implementing platforms and services in a software-defined network environment.
Vendor certifications, VMware, Cisco, Microsoft, NetApp, etc.

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.
Have finger dexterity in order to manipulate objects with fingers rather than whole hands or arms, for example, using a keyboard.
Listen to and understand information and ideas presented through spoken words and sentences.
Communicate information and ideas in speaking so others will understand.
Read and understand information and ideas presented in writing.
Apply general rules to specific problems to produce answers that make sense.
Identify and understand the speech of another person.

Pay Range

USD $104,000.00 - USD $143,000.00 /Yr.

About the Company

M.C. Dean

Designs and deploys secure mission-critical infrastructure

M.C. Dean designs, builds, operates, and maintains integrated cyber-physical systems for mission-critical facilities, secure environments, and large enterprises. Its work spans electrical power, security, telecommunications, life safety, automation and controls, audio-visual, and IT systems, all coordinated through management platforms that support long-term operation and sustainability. The company works end-to-end: it engineers solutions, installs them, and then runs and maintains them to ensure continuous, secure, and resilient performance. What sets it apart is its ability to provide comprehensive, turnkey technology and infrastructure services for critical environments—combining physical systems with digital management to create secure, automated facilities. The goal is to deliver automated, secure, and resilient power and technology systems and the platforms needed to manage them over the long term.

Company size: 1,001-5,000
Company stage: Not listed
Total funding: Not listed
Headquarters: Tysons, VA
Founded: 1949

Recently Posted Jobs

Explore more opportunities at M.C. Dean

See more jobs