Junior Offensive Cyber Engineer

Leidos • Lawton, OK

7d • Onsite

About The Position

Leidos is seeking an entry-level Offensive Cyber Engineer to join its team in Lawton, Oklahoma. The role assists with technical security assessments and penetration testing, and collaborates with detection engineering and defensive teams, including the CEMA Resiliency System (CRS), to improve organizational threat detection. The position is onsite in Lawton, with travel to testing events as required.

Requirements

• Bachelor’s degree in Cybersecurity, Computer Science, Computer Engineering, Electrical Engineering, or a related technical discipline.
• Foundational knowledge of Linux distributions such as Kali, Parrot, or Ubuntu, and Windows operating systems.
• Basic scripting or programming ability, such as Python, Bash, or PowerShell.
• Foundational understanding of computer networking principles, including TCP/IP, routing, common ports and protocols, and core cybersecurity concepts.
• Strong analytical and problem-solving skills and a continuous learning mindset.
• Willingness to work onsite in Lawton, Oklahoma, or relocate before the start date, and travel to testing events as required.
• U.S. citizenship required.
• Must be able to obtain and maintain a TS/SCI clearance.

Nice To Haves

• Entry-level or foundational cybersecurity certifications, such as CompTIA Security+, CompTIA PenTest+, eJPT, PNPT, CEH, GIAC GSEC, or active progress toward OSCP.
• Participation in Capture The Flag competitions, Hack The Box, TryHackMe, or university cyber defense or attack teams.
• Academic, lab, or internship experience with security tools such as Nmap, Wireshark, Burp Suite, or Metasploit.
• Coursework or exposure to binary analysis, assembly language, or basic reverse engineering.
• Academic exposure or basic understanding of cloud environments such as AWS or Azure and version control systems such as Git.
• Ability to clearly document technical steps and present findings to technical peers.
• Previous Department of War experience.

Responsibilities

• Assist in developing basic automation scripts and custom proof-of-concept exploits based on identified vulnerabilities.
• Support senior engineers in penetration tests, vulnerability assessments, and network protocol analyses across enterprise and government environments.
• Collaborate with the CRS and detection engineering teams to understand how offensive findings translate into defensive detection rules.
• Participate in operational testing events and support real-world validation of security tools and exploits.
• Research and review technical documentation, security classification guides, and system architectures alongside senior staff.
• Contribute to after-action reports, technical documentation, and remediation recommendations for security stakeholders.

What This Job Offers

• Job Type: Full-time
• Career Level: Entry Level