Senior Cyber Security Engineer - Splunk

MANTECH; Chantilly (VA); On-site; USD 100,000 - 140,000; Full time

Benefits offered by this job

Competitive benefits

Professional growth opportunities

Job summary

MANTECH is seeking a dedicated Senior Splunk Cyber Security Engineer to support our Sponsors' system accreditation efforts in Chantilly, VA. The role focuses on managing a large Splunk environment, ensuring data integrity and security compliance.

Requires 5+ years in cyber security, 3+ years with Splunk ES, DoD 8570 IAT Level II/III, TS/SCI with Poly, and scripting skills. We offer growth, teamwork and competitive benefits.

Qualifications

• Bachelor's degree or 4+ years of equivalent experience.
• 5+ years in cyber security with focus on Splunk ES.
• DoD 8570 IAT Level II or III certification.
• Unix/Linux/Windows familiarity for security integration.
• Experience with accreditation processes and ICD 503 standards.
• Background in security documentation, CM, and patching.
• Scripting in Bash, Python, or Java; ITSI/Cribl preferred.

Responsibilities

• Oversee daily operations of a large Splunk environment.
• Install and manage Splunk Add-ons and API integrations.
• Create deployment documentation outlining specs and architecture.
• Design and deploy forwarders with centralized config management.
• Tune CIM and manage Knowledge Object Management for data accuracy.
• Collaborate with stakeholders to meet operational requirements.
• Propose and implement policy enhancements to strengthen cyber defense.

Skills

Cyber security

Splunk ES

Scripting (Bash, Python, Java)

Accreditation processes

Security documentation

Cribl / ITSI knowledge

Education

Bachelor's degree or 4+ years experience

Tools

Splunk Enterprise Security

Bash

Python

Java

Unix/Linux

Windows

Cribl Engineer Certification

ITSI

Job description

Salary: $100,000 - 140,000 per year

Requirements

• Bachelors degree or 4+ years of equivalent experience
• Over 5 years in cyber security
• At least 3 years with Splunk Enterprise Security
• Familiarity with Unix, Linux, and Windows operating systems for security integration
• Experience navigating accreditation processes and ICD 503 standards
• Background in network documentation related to security compliance, configuration management, and patching
• Valid DoD 8570 IAT Level II or IAT Level III certification
• Preferred: Experience with scripting languages such as Bash, Python, or Java, and various analytical tools
• Preferred: Advanced Splunk certifications including Architect or Consultant, and IT Service Intelligence (ITSI) experience
• Preferred: Cribl Engineer Certification with experience in security and operational use cases
• Clearance: Active TS/SCI with Polygraph required

Responsibilities

• Overseeing the daily operations of a large Splunk environment, addressing and resolving data collection challenges to maintain system integrity
• Installing and managing both supported and unsupported Splunk Add-ons for various data sources, and performing API integrations
• Creating detailed deployment documentation to outline specifications, methods, and architectural considerations
• Rapidly designing and deploying forwarders with centralized configuration management using the Splunk Deployment Server
• Managing Knowledge Object Management, including Common Information Model (CIM) tuning to ensure data accuracy
• Collaborating with stakeholders to guarantee systems meet all operational requirements
• Proposing and implementing approved process and policy enhancements to strengthen cyber defense capabilities

Technologies

• API
• Architect
• Bash
• Java
• Linux
• Network
• Python
• Security
• Splunk
• Unix
• Windows
• Support

More

MANTECH is looking for a dedicated and customer-focused Senior Splunk Cyber Security Engineer to join our team in Chantilly, VA. We value technical expertise and a proactive attitude as you will be instrumental in supporting our Sponsors system accreditation efforts. Our team offers opportunities for professional growth and development, a collaborative working environment, and competitive benefits. If you are ready to take your career to the next level while making a significant impact on our cyber security initiatives.

last updated 40 week of 2026