DCO Counter-Measures Engineer

Leidos Inc; Scott Air Force Base (IL); Hybrid; USD 85,000 - 120,000; Full time

Job summary

Leidos Inc is seeking a Defensive Cyber Operations Counter-Measures Engineer to support the GSM-O II program at Scott Air Force Base, IL. You'll engage in cyber defense operations, author countermeasures, and develop automated cybersecurity solutions. Qualified candidates should have a Bachelor’s degree and 8+ years of experience, along with a DoD Secret clearance. The position may allow for partial telework but requires a consistent on-site presence.

Qualifications

• Active DoD Secret clearance and eligibility to obtain TS/SCI.
• 8140 Cyber Defense Infrastructure Support Specialist 521 (CS) Intermediate-level compliance.
• Advanced understanding of security elements and attack vectors.

Responsibilities

• Author and deploy countermeasures to eliminate threats.
• Assess the effectiveness of countermeasures continuously.
• Design solutions to deliver automated cybersecurity services.

Skills

Programming in modern languages (Java, Python, Ruby, C++)

Custom malware detection development

TCP/IP and networking protocols

UNIX administrative skills

Education

Bachelor’s degree in a related discipline

8+ years of applicable experience

Tools

Bash

Python

PowerShell

Git

Job description

Job Overview

Leidos Digital Modernization sector is looking for a Defensive Cyber Operations (DCO) Counter‑Measures Engineer to support the GSM‑O II program, which provides network operations and cyber defense support to the Defense Information Systems Agency (DISA) for the DoD and COCOMs. The selected candidate will provide defensive cyber operations support and engage with customers and mission partners.

Location: Can be based out of Scott AFB, IL; Hill AFB, UT; or Columbus, OH. Partial/hybrid telework may be allowed, but a consistent on‑site presence is required.

Primary Responsibilities

• Author and deploy novel countermeasures to eliminate threats and illuminate their activities.
• Assess the effectiveness of countermeasures on an ongoing basis and revector actions as needed.
• Design and develop solutions to deliver automated cybersecurity services, conduct 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 may impact the DoDIN.

Basic Qualifications

• Must have an active DoD Secret clearance and be eligible to obtain TS/SCI.
• Bachelor’s degree in a related discipline with 8+ years of applicable experience; additional years of experience is accepted in lieu of a degree.
• Requires 8140 Cyber Defense Infrastructure Support Specialist 521 (CS) Intermediate‑level compliance, including one of the following certifications: Security+, PenTest+, 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.
• Understand the life cycle of network threats, attacks, attack vectors and methods of exploitation with an understanding of intrusion set tactics, techniques and procedures (TTPs).
• UNIX administrative skills.

Preferred Skills

• Experience with DISA and DoD Networks.
• Experience countering APTs or emergent threats to DoD networks.
• Skilled in developing extended cyber security analytics.
• Experience in developing and supporting a development environment.
• Experience automating tasks via Bash, Python, PowerShell, 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.

Equal Employment Opportunity

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.