DCO Counter-Measures Engineer

Position Summary

Leidos Digital Modernization has a job opportunity for a Defensive Cyber Operations (DCO) Counter‑Measures Engineer supporting the GSM‑O II program, which provides network operations and cyber defense support to the Defense Information Systems Agency (DISA). The selected candidate will engage with customers and mission partners across the enterprise. This position can be based at Scott AFB, IL;
Hill AFB, UT; or Columbus, OH, with partial/hybrid telework possibly allowed but consistent on‑site presence required.

• Author and deploy novel countermeasures to eliminate threats and illuminate their activities.
• Assess the effectiveness of countermeasures on an ongoing basis and refine actions as needed.
• Design and develop solutions to deliver automated cybersecurity services, including agile development and maintenance of automation scripts/tools to scale cybersecurity work across the enterprise.
• Develop custom integrations, data correlation, and processing strategies to reduce cybersecurity risk and act as a subject‑matter expert for the automation team.
• Maintain situational awareness of cyber activity by reviewing DoD, Intelligence Community, and open‑source reporting for new vulnerabilities, malware or other threats that could impact the DoDIN.

• Active DoD Secret clearance and eligibility to obtain TS/SCI.
• Bachelor's degree in a related discipline with 8+ years of applicable experience; additional related experience may substitute for a degree.
• Requirement for 8140 Cyber Defense Infrastructure Support Specialist 521 (CS) Intermediate‑level compliance and one of the following certifications:
  Security+, Pen Test+, CySA+, GSEC, or GMON.
• Proficiency in programming in at least one modern language (Java, Python, Ruby, C++).
• Custom malware detection development experience.
• Advanced understanding of TCP/IP, networking ports and protocols, traffic flow, system administration, OSI model, defense‑in‑depth, and common security elements.
• Understanding of the life cycle of network threats, attacks, attack vectors, and exploitation methods, with knowledge of intrusion set tactics, techniques, and procedures (TTPs).
• UNIX administrative skills.

• Experience with DISA and DoD networks.
• Experience countering APTs or emergent threats to DoD networks.
• Skill in developing extended cyber‑security analytics.
• Experience in developing and supporting a development environment.
• Experience automating tasks via Bash, Python, Power Shell, or other scripting tools.
• Experience in Linux and Windows‑based systems administration in a cloud or virtualized environment.
• Experience with API development and integration.
• Experience with Git, Sigma, Yara, Snort, and Suricata.
• Experience with Detection‑as‑a‑Code principles.
• Experience with malware analysis concepts and methods.
• Advanced certifications such as GREM, OSCP, CISSP, or CASP.

$ – $.

Competitive compensation, health and wellness programs, income protection, paid leave, and retirement benefits are part of the compensation package.

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.