Senior Splunk Cyber Security Engineer

DESCRIPTION & REQUIREMENTS

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MANTECH seeks a motivated, career, and customer-oriented Senior Splunk Cyber Security Engineer to join our team in Chantilly, VA.

In this role, you will

• support a mission-critical initiative and contribute directly to cybersecurity operations through the administration and engineering of a large enterprise Splunk environment.
• This position is ideal for professionals with strong hands-on experience in system integration, data management, and cyber defense initiatives.
• You will play a key role in maintaining and tuning Splunk systems, while collaborating with technical teams and cyber analysts across a dynamic enterprise environment.

Responsibilities

• include, but are not limited to:
• * Managing the day-to-day operation of large enterprise Splunk deployments
• * Troubleshooting data collection issues and resolving system conditions affecting stability or integrity
• * Deploying and maintaining both supported and unsupported Splunk add-ons
• * Executing Splunk Enterprise upgrades and patches
• * Configuring and deploying Splunk forwarders using centralized management tools
• * Maintaining and tuning Splunk Enterprise Security (ES) content and performance
• * Managing knowledge objects, data models, dashboards, alerts, and operational content
• * Supporting API integrations and external system connectivity
• * Developing and maintaining detailed engineering and compliance documentation
• * Contributing to Splunk deployment and architecture diagrams and system documentation

Minimum Qualifications

• * Bachelor’s degree, or 4+ additional years of cybersecurity experience in lieu of a degree
• * 5+ years of experience in an enterprise and/or cybersecurity-focused environment
• * Experience with Splunk administration and engineering
• * Experience with Splunk Enterprise Security (ES) operations and configurations
• * Proficiency with Unix and Windows environments
• * DoD 8570 IAT Level II certification (e.g., Security+, CCNA-Security, GSEC)

Preferred Qualifications

• * Splunk certifications such as Architect, Consultant I/II, Admin, or Power User
• * Experience with scripting or programming languages (e.g., Bash, Python, Java, Perl, .NET)
• * Familiarity with developing and deploying operational and security use cases within Splunk
• Clearance

Requirements

• * Must have a current/active TS/SCI with CI Polygraph
• Physical

Requirements

• * Must be able to remain in a stationary position 50% of the time
• * Occasionally move about inside the office to access file cabinets, office machinery, or to communicate with co-workers, management, and customers via email, phone, or virtual communication, which may involve delivering presentations
• The projected compensation range for this position is $114,600.00-$190,200.00. 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 [email protected] and provide your name and contact information.
• GENERAL INFORMATION
• Requisition #
• R71174
• Locations
• USA-VA-Chantilly
• Posting Date
• 10/07/2026
• Security Clearance Required
• TS/SCI w/ Poly
• Remote Type
• Onsite
• Time Type
• Full time