Senior Principal Cyber Engineer

ManTech; Chantilly (NC); On-site; USD 179,000 - 318,000; Full time

Benefits offered by this job

Health Insurance

Life Insurance

Paid Time Off

Holiday Pay

Disability Insurance

Retirement & Savings

Job summary

ManTech is seeking a Senior Principal Cyber Engineer in Chantilly, VA to design, secure, and sustain enterprise networks for critical missions. You’ll collaborate across teams to deliver resilient solutions, perform advanced troubleshooting, and drive security operations in dynamic environments.

Requirements include 10+ years in cybersecurity, Cribl engineering skills, REGEX, and Cribl certifications within 30 days. Active TS/SCI w/ Poly is required; relocation and comprehensive benefits offered.

Qualifications

• Bachelor’s degree or 4+ additional years of IT experience in lieu of degree.
• 10+ years of experience in cybersecurity with a focus on SIEM engineering, log observability, and/or log forwarding.
• Proficiency in utilizing REGEX to filter or extract data.
• Experience operating and managing data pipelines with Cribl Stream or Cribl Edge in a production environment.
• Knowledge of log forwarding, indexing, data collection, search architecture, source types, and ingestion-time parsing.
• Must have or be willing to obtain an IAT Level II (or higher) certification within 30 days of hire.
• Must have or be willing to obtain Cribl Engineer Certification (CC Engineer) within 30 days of hire.

Responsibilities

• Interact with engineers, cross-functional teams, and customers at multiple levels to gather, coordinate, and deliver technical information.
• Work closely with engineering teams to troubleshoot and build complex, highly available network topologies.
• Develop and manage data flow pipelines implementing complex extraction, transformation, and filtering to enhance user experience.
• Lead complex network troubleshooting and root cause analysis across enterprise, data center, cloud, and hybrid environments, utilizing packet captures, routing analysis, traffic flow inspection, and protocol level diagnostics to rapidly identify and resolve service-impacting issues.
• Perform engineering support and system administration for applications and systems, including installation, configuration, maintenance, patching, and backup/restore activities.
• Provide Tier 2/3 maintenance and engineering support for cybersecurity technologies.
• Support Assessment and Authorization (A&A) activities related to cybersecurity technologies, where applicable.

Skills

Regex proficiency

SIEM engineering

Log observability

Log forwarding

Data pipelines

Education

Bachelor’s degree or equivalent IT experience

Tools

Cribl Stream

Cribl Edge

Job description

General information

Requisition #: R71196

Locations: USA-VA-Chantilly

Posting Date: 10/07/2026

Security Clearance Required: TS/SCI w/ Poly

Remote Type: Onsite

Time Type: Full time

Description & Requirements

Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we’ve been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now—unleash your potential with MANTECH!

MANTECH seeks a motivated, mission-focused Senior Principal Cyber Engineer to join our team in Chantilly, VA.

In this role, you will provide advanced engineering expertise to design, implement, secure, and sustain complex enterprise network environments supporting critical customer missions. You will collaborate across technical teams and customer stakeholders to deliver resilient, highly available, and secure network solutions while driving operational excellence and innovation.

Responsibilities include but are not limited to:

• Interact with engineers, cross-functional teams, and customers at multiple levels to gather, coordinate, and deliver technical information.
• Work closely with engineering teams to troubleshoot and build complex, highly available network topologies.
• Develop and manage data flow pipelines implementing complex extraction, transformation, and filtering to enhance user experience.
• Lead complex network troubleshooting and root cause analysis across enterprise, data center, cloud, and hybrid environments, utilizing packet captures, routing analysis, traffic flow inspection, and protocol level diagnostics to rapidly identify and resolve service-impacting issues.
• Perform engineering support and system administration for applications and systems, including installation, configuration, maintenance, patching, and backup/restore activities.
• Provide Tier 2/3 maintenance and engineering support for cybersecurity technologies.
• Support Assessment and Authorization (A&A) activities related to cybersecurity technologies, where applicable.

Minimum Qualifications:

• Bachelor’s degree or 4+ additional years of IT experience in lieu of degree.
• 10+ years of experience in cybersecurity with a focus on SIEM Engineering, log observability, and/or log forwarding.
• Proficiency in utilizing REGEX to filter or extract data.
• Experience operating and managing data pipelines with Cribl Stream or Cribl Edge in a production environment.
• Knowledge of log forwarding, indexing, data collection, search architecture, source types, and ingestion-time parsing.
• Must have or be willing to obtain an IAT Level II (or higher) certification within 30 days of hire.
• Must have or be willing to obtain Cribl Engineer Certification (CC Engineer) within 30 days of hire.

Preferred Qualifications:

• Knowledge of Cribl architecture and Cribl best practices with experience implementing in enterprise environments.
• Understanding of architectural principles such as defense in depth, resilience, and integrated security operations.
• Familiarity with federal cybersecurity guidance, including NIST SP 800-37 (Risk Management Framework) and NIST SP 800-137 (Information Security Continuous Monitoring).
• In-depth understanding and practical experience with Cribl, REGEX, and log forwarding.
• Experience working in Agile environments.

Clearance Requirements:

• Must possess an active TS/SCI with Polygraph.

Physical Requirements:

• Must be able to remain in a stationary position 50% of the time.
• Must occasionally move about inside the office to access file cabinets, office machinery, or communicate with co-workers, management, and customers via email, phone, or virtual platforms, which may involve delivering presentations.

The projected compensation range for this position is $179,300.00-$318,400.00. There are differentiating factors that can impact a final salary/hourly rate, including, but not limited to, Contract Wage Determination, relevant work experience, skills and competencies that align to the specified role, geographic location (For Remote Opportunities), education and certifications as well as Federal Government Contract Labor categories. In addition, MANTECH invests in its employees beyond just compensation. MANTECH’s benefits offerings include, dependent upon position, Health Insurance, Life Insurance, Paid Time Off, Holiday Pay, short-term and long-term Disability, Retirement and Savings, Learning and Development opportunities, wellness programs as well as other optional benefit elections.

MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation. If you need a reasonable accommodation to apply for a position with MANTECH, please email us at [e-mail] and provide your name and contact information.