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Leidos

Cyber Defense Analyst

Leidos

Cyber Defense Analyst at Leidos performing threat analysis and network defense. Engaging in incident response and collaborating on emerging cybersecurity challenges.

Posted 6/2/2026full-timeRemote • 🇺🇸 United StatesMid-LevelSenior💰 $87,100 - $157,450 per yearWebsite

Tech Stack

Tools & technologies
Cyber SecurityLinuxSplunkUnix

About the role

Key responsibilities & impact
  • Analyze network and host activity associated with both successful and unsuccessful intrusions by advanced attackers
  • Perform network traffic analysis utilizing raw packet data, net flow, IDS, and custom sensor output
  • Support enterprise incident response efforts
  • Leverage understanding of tactics, techniques and procedures associated with advanced threats to create and add custom signatures that mitigate highly dynamic threats to the enterprise
  • Employ advanced forensic tools and techniques for attack reconstruction and intelligence gathering
  • Proactively research emerging cyber threats
  • Apply analytical understanding of attacker methodologies and tactics, system vulnerabilities, and key indicators of attacks and exploits
  • Contribute to threat intelligence reports and briefings that provide situational awareness of cyber threats impacting the company's global network infrastructure, to every level of the organization
  • Participate in threat hunt operations using known adversary tactics, techniques and procedures, as well as indicators of attack, in order to detect advanced threats to the enterprise
  • Collaborate using information and knowledge sharing networks and professional relationships to achieve common goals
  • Provide on-call support for incident response efforts outside of core hours as needed

Requirements

What you’ll need
  • US Citizenship and eligibility to obtain DoD Clearance
  • BS Degree and 4-8 years relevant experience in cyber security or network defense; or 4-8 years relevant experience with relevant certifications (CISSP, SANS GIAC, CEH, etc.)
  • Experience with Splunk or other SIEM-type platform
  • Experience in conventional network\host-based intrusion analysis, digital forensics, or malware analysis
  • Experience performing "deep dive" analysis and correlation of log data from multiple sources including PCAP and forensic artifacts
  • Experience leading and contributing to incident response activities
  • Strong understanding of Operating Systems and Network Protocols
  • Proficiency with Microsoft Windows administrative tools, and the Unix/Linux command line

Benefits

Comp & perks
  • Health and Wellness programs
  • Income Protection
  • Paid Leave
  • Retirement

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools
network traffic analysispacket analysisincident responseforensic analysisthreat intelligencemalware analysislog data correlationdigital forensicsvulnerability assessmentattack reconstruction
Soft Skills
analytical skillscollaborationcommunicationproblem-solvingresearch skillssituational awarenessleadershipinterpersonal skillsadaptabilityattention to detail
Certifications
CISSPSANS GIACCEH