Principal Cyber Security Engineer

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 seeks a motivated, career and customer-oriented Principal Cyber Security Engineer to join our team in Denver, CO. You will help protect our national security while working on innovative projects that offer opportunities for advancement. This role supports the design, implementation, and maintenance of complex systems and infrastructure to proactively mitigate cyber threats to customer networks.

Responsibilities Include But Are Not Limited To

• 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.

Minimum 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.

Preferred Qualifications

• Familiarity with Elastic to include Logstash and Kibana concepts.
• Knowledge of IDS (intrusion detection solutions) and the implementation of counter-measures or mitigating controls.
• Understanding of the latest security principles, techniques, and protocols.

Clearance Requirements

• An active TS/SCI with Polygraph is required.

Physical Requirements

• Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine, and computer printer.
• The person in this position frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.