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Cybersecurity Engineer 1

M.C. Dean
United States, Virginia, Tysons
1765 Greensboro Station Place (Show on map)
Mar 18, 2026
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 7,000 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 Cybersecurity Engineer to support vulnerability management, security operations, and compliance activities. The candidate will U.S. Government (USG) secure programs, with additional support to select internal and commercial projects as needed. This role is responsible for implementing and maintaining cybersecurity controls to ensure compliance with federal regulations, customer requirements, and company security policies. The engineer will work closely with the M.C. Dean Security and Automation teams to support system hardening, vulnerability management, and continuous monitoring across classified and unclassified customer environments. Clearance Requirement: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 Top-Secret Clearance Required with the ability to obtain TS/SCI with Poly Clearance.) Responsibilities Run and support Nessus vulnerability scans, document findings and track remediation. Assist with the configuration and operation of security tools (e.g., Microsoft Defender for Endpoint, Splunk). Support RMF tasks, evidence collection, and POA&M updates. Perform basic DISA STIG checks and help apply hardening baselines. Coordinate with system owners to address vulnerabilities and patch compliance. Prepare clear, concise security and vulnerability reports. Contribute to SOPs, checklists, and security documentation. Qualifications 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 Top-Secret Clearance Required with the ability to obtain TS/SCI with Poly Clearance.) A Bachelor's Degree in Cybersecurity, Information Technology, Systems Engineering, Engineering, or a related discipline with 0+ years of experience. Experience with vulnerability scanners (preferably Nessus) and endpoint/cloud security tools. Familiarity with RMF, NIST 80053, or DISA STIG processes. Ability to recognize common attack indicators, triage alerts, and escalate. Exposure to Active Directory/GPOs or cloud security (Azure/AWS). Experience with ticketing systems and reporting dashboards. Basic scripting (PowerShell or Python) TCP/IP, firewalls, VPNs, ports & protocols, OSI model, basic troubleshooting. Vulnerability Scanning & Analysis - Familiarity with Nessus, Qualys, or Rapid7. Ability to travel domestically and internationally up to 25% of the time. Desired Skills Security certifications such as Security+, SSCP, or CySA+, and relevant vendor certifications (e.g., VMware, Cisco, Microsoft, NetApp). Understanding of Department of Defense standards and best practices. Reverse Engineering or Malware Analysis Basics. SIEM Experience - Splunk, Elastic, Microsoft Sentinel (searches, dashboards, alert triage). 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.