Countermeasures Engineer: DoD Cyber Defense Expert

Via Logic LLC; Shiloh (IL); On-site; USD 87,000 - 157,000; Full time

Job summary

Leidos seeks a Countermeasures Engineer to design and deploy innovative cyber defenses for DoD networks, supporting DISA and national security missions. You will craft malware detection tools, analyze threat intel, and build automation to scale protection across classified environments.

The role requires TS clearance, strong programming skills in Python/Java/C++, and hands-on experience countering APTs within DoD contexts. Location primarily in Illinois with DoD coordination.

Qualifications

• Active DoD Top-Secret clearance.
• Bachelor's degree in Computer Science, Cybersecurity, Computer Engineering, or related field with 8+ years of hands-on experience.
• DoD 8570 IAT Level II certification (Security+ CE or equivalent), CSSP-A certification required within 180 days.
• Strong programming proficiency in Python, Java, Ruby, or C++.
• Proven experience developing custom malware detection capabilities.
• Deep knowledge of threat actor lifecycle, attack vectors, exploitation methods, and intrusion set TTPs.
• UNIX/Linux administrative skills.
• Advanced certifications: GREM, OSCP, GCFA, CISSP, CASP, or GIAC

Responsibilities

• Design and deploy innovative, custom countermeasures to neutralize advanced threats and expose adversary activities on Classified terrain.
• Develop cutting-edge malware detection capabilities tailored to emerging threat actor techniques.
• Continuously evaluate countermeasure effectiveness against evolving Advanced Persistent Threats (APTs) and adjust strategies in real-time.
• Apply Detection-as-a-Code principles to create scalable, version-controlled security solutions.
• Architect and build automated cybersecurity solutions that deliver enterprise-wide protection at scale.
• Develop custom integrations, data correlation engines, and processing pipelines to reduce cyber risk across the DoD & Classified terrain.
• Conduct agile development and maintenance of automation scripts and tools using modern DevSecOps practices.
• Serve as a Subject Matter Expert (SME) for the automation team, mentoring others and driving technical innovation.
• Maintain continuous awareness of the cyber threat landscape by analyzing DoD, Intelligence Community, and open-source intelligence reporting.
• Identify new vulnerabilities, malware families, and threat actor TTPs that could impact mission-critical networks.
• Translate threat intelligence into actionable defensive measures and detection capabilities.
• Collaborate with DISA, mission partners, and Combatant Commands to enhance collective defense posture.

Skills

Top-Secret Clearance

Programming in Python/Java/C++

Malware detection capabilities

Threat intelligence

Unix/Linux administration

DoD 8570 IAT Level II

Education

Bachelor's degree in Computer Science, Cybersecurity, Computer Engineering, or related field

Tools

Git

Sigma

Yara

Snort

Suricata

Job description

Leidos seeks a Countermeasures Engineer to design and deploy innovative cyber defenses for DoD networks, supporting DISA and national security missions. You will craft malware detection tools, analyze threat intel, and build automation to scale protection across classified environments.

The role requires TS clearance, strong programming skills in Python/Java/C++, and hands-on experience countering APTs within DoD contexts. Location primarily in Illinois with DoD coordination.