Splunk Content Developer

The Cyber Systems Engineer - Splunk Content Developer is responsible for designing, engineering, and enhancing advanced cybersecurity capabilities across a large-scale enterprise environment supporting DHS/FEMA missions.

This role focuses on the development, administration, and optimization of security monitoring and detection capabilities, including the maintenance of cyber defense tools, strengthening network and endpoint security, and integrating security technologies within complex enterprise infrastructures.

A key responsibility of this position is the development and tuning of custom detection content within the Splunk Security Information and Event Management (SIEM) platform using advanced Search Processing Language (SPL), data models, and related security analytics technologies. The engineer will create scalable, resilient, and automated security solutions that improve threat detection, reduce response times, and protect mission‑critical assets.

• Support and maintain advanced cyber tools and security capabilities across enterprise DHS/FEMA environments.
• Cyber Tools include:
  • Splunk
  • Axonius
  • Cribl
  • Corelight
  • Fores count
  • Wraithwatch
  • Cyrtica

• Conduct deep‑dive analysis and troubleshooting of complex endpoint security issues.
• Engineer permanent solutions using advanced diagnostic tools and methodologies.
• Develop and enforce security policies, compliance configurations, and hardened endpoint baselines.

• Engineer backup, redundancy, and disaster recovery strategies for endpoint security infrastructure.
• Develop innovative methods to improve operational efficiency, scalability, and cyber resilience.

• Produce detailed engineering documentation, system diagrams, and security reports.
• Provide technical guidance, mentorship, and specialized training to junior engineers and administrators.
• Support large‑scale security exercises, vulnerability assessments, and readiness events.

• Bachelor’s Degree in Computer Science, Engineering, Information Technology, Cybersecurity, or related field and 12+ years of experience or MS Degree and 10 years of experience. In addition, at least eight (8) years of experience in incident detection and response, malware analysis, or cyber forensics.
• Extensive experience working with various security methodologies and processes.
• Advanced knowledge of TCP/IP protocols, experience configuring and implementing various technical security solutions, extensive experience providing analysis and trending of security log data from a large number of heterogeneous security devices.
• Expert knowledge in two or more of the following areas related to cybersecurity:
  • Vulnerability Assessment
  • Intrusion Prevention and Detection
  • Access Control and Authorization
  • Policy Enforcement
  • Application Security
  • Protocol Analysis
  • Firewall Management
  • Incident Response
  • Web‑filtering
  • Advanced Threat Protection
• Experience developing advanced correlation rules utilizing data models for cyber threat detection.
• Experienced with creating and maintaining Splunk knowledge objects.
• Experienced managing and maintaining Splunk data models.
• Experience creating regex for pattern matching.
• Experience implementing security methodologies and SOC processes.
• TS Clearance.

• Experience with cloud (e.g., O365, Azure, AWS) security monitoring and familiar with cloud threat landscape.
• Completed Splunk Advanced Searching and Reporting training.
• Experience developing custom scripts using Python.
• Splunk certifications.

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.