Lead Cyber Security Engineer: Protect & Optimize Systems

MANTECH; Denver (CO); On-site; USD 150,000 - 190,000; Full time

Job summary

MANTECH in Denver, CO seeks a Principal Cyber Security Engineer to design, implement, and maintain secure systems protecting national security. You will collaborate with cross-functional teams and lead efforts to proactively mitigate cyber threats across customer networks.

The role requires DoD security credentials, RMF experience, and a strong background in Windows/Linux, virtualization, and scripting to support complex environments. Denver-based, with opportunities for advancement and growth.

Qualifications

• Bachelor's degree, or 4+ additional years of cyber experience in lieu of a degree.
• 7+ years of cyber security experience.
• Experience with IT system and application engineering background with experience in modern Windows, LINUX, network operating systems, databases, and virtual computing.
• Experience with certification testing, Risk Management Framework (RMF), information assurance tools, DoD STIG, and vulnerability assessment.
• Experience with VMWare infrastructure, including vCenter and ESXi configuration and maintenance.
• Experience with one or more scripting languages such as Python, JavaScript, or Perl.
• Knowledge of network devices (routers and switches), TCP/UDP traffic, firewall technologies, IDS technologies, proxy technologies, and antivirus, spam and spyware solutions.
• DoD 8570 certification meeting IAT Level II required.

Responsibilities

• Deploys solutions to proactively mitigate cyber threats to customer networks.
• Collaborate with cross-functional teams to ensure that our systems and infrastructure meet security, scalability, and performance requirements.
• Troubleshoot and resolve complex system issues, including performance and availability problems.
• Makes recommendations to improve overall security posture to senior management.
• Plan and execute system upgrades, patches, and migrations.
• Evaluates potential system security risks and takes appropriate corrective, mitigation, and recovery actions.
• Researches, evaluates, and provides feedback on problematic security trends and patterns in customer support requirements.

Skills

Cybersecurity

RMF

DoD STIG

VMware vCenter/ESXi

Scripting (Python/JavaScript/Perl)

Network security concepts

IAT Level II

Education

Bachelor's degree or 4+ years cyber experience

Tools

Elastic (Logstash/Kibana)

VMware vCenter/ESXi

Job description

MANTECH in Denver, CO seeks a Principal Cyber Security Engineer to design, implement, and maintain secure systems protecting national security. You will collaborate with cross-functional teams and lead efforts to proactively mitigate cyber threats across customer networks.

The role requires DoD security credentials, RMF experience, and a strong background in Windows/Linux, virtualization, and scripting to support complex environments. Denver-based, with opportunities for advancement and growth.