Junior Offensive Cyber Engineer

Monmouth; Lawton (OK); On-site; USD 60,000 - 90,000; Full time

Job summary

Leidos is seeking an entry-level Offensive Cyber Engineer to join our team in Lawton, OK. You will assist in conducting security assessments, support penetration testing, and collaborate with detection engineering teams to improve threat detection.

Responsibilities include developing automation scripts, supporting tests across enterprise and government environments, and contributing to technical documentation and remediation recommendations. On-site work and potential travel are required.

Qualifications

• Bachelor’s degree or higher in a technical discipline as listed.
• Foundational knowledge of Linux distributions and Windows operating systems.
• Basic scripting in Python, Bash, or PowerShell.
• Foundational understanding of TCP/IP, routing, ports and cybersecurity basics.
• Willingness to work on-site in Lawton, OK and travel to testing events as required.
• Must be able to obtain and maintain a TS/SCI Clearance.

Responsibilities

• Assist in developing basic automation scripts and proof-of-concept exploits.
• Support senior engineers in executing penetration tests and vulnerability assessments.
• Collaborate with CRS and detection engineering to translate offensive findings into detection rules.
• Participate in operational testing events and validate security tools.
• Review technical docs and system architectures with senior staff.
• Contribute to after-action reports and remediation recommendations.

Skills

Linux basics

Windows basics

Scripting basics

Networking basics

Analytical mindset

Willing to relocate

TS/SCI clearance

Education

Bachelor’s degree in Cybersecurity

Bachelor’s degree in Computer Science

Bachelor’s degree in Computer Engineering

Bachelor’s degree in Electrical Engineering

Tools

Nmap

Wireshark

Burp Suite

Metasploit

Git

Job description

Leidos is seeking an Offensive Cyber Engineer to join our team in Lawton, OK. In this entry-level role, you will assist in conducting technical security assessments, supporting penetration testing activities, and collaborating with detection engineering and defensive teams (CEMA Resiliency System) to improve organizational threat detection.

Primary Responsibilities

• Assisting in developing basic automation scripts and custom proof-of-concept exploits based on identified vulnerabilities.
• Supporting senior engineers in executing penetration tests, vulnerability assessments, and network protocol analyses across enterprise and government environments.
• Collaborating with the CEMA Resiliency System (CRS) team and detection engineering teams to understand how offensive findings translate into defensive detection rules.
• Participating in operational testing events and support real-world validation of security tools and exploits.
• Researching and review technical documentation, security classification guides, and system architectures alongside senior staff.
• Contributing to after-action reports, technical documentation, and remediation recommendations for security stakeholders.

Basic Qualifications

• Bachelor’s degree in Cybersecurity, Computer Science, Computer Engineering, Electrical Engineering, or a related technical discipline.
• Foundational knowledge of Linux distributions (e.g., Kali, Parrot, Ubuntu) and Windows operating systems.
• Basic scripting or programming ability (e.g., Python, Bash, or PowerShell).
• Foundational understanding of computer networking principles (TCP/IP, routing, common ports/protocols) and core cybersecurity concepts.
• Strong analytical, problem-solving, and continuous learning mindset.
• Willingness to work on-site in Lawton, OK (or relocate prior to start date) and travel to testing events as required.
• Must be able to obtain and maintain a TS/SCI Clearance.

Preferred Qualifications

• Certifications: Entry-level or foundational cybersecurity certifications (e.g., CompTIA Security+, CompTIA PenTest+, eJPT, PNPT, CEH, GIAC GSEC, or active progress toward OSCP).
• Hands-On Lab/Competition Experience: Participation in Capture The Flag (CTF) competitions, Hack The Box, TryHackMe, or university cyber defense/attack teams.
• Tool Familiarity: Academic, lab, or internship experience with security tools (e.g., Nmap, Wireshark, Burp Suite, Metasploit).
• Reverse Engineering / Systems: Coursework or exposure to binary analysis, assembly language, or basic reverse engineering.
• Modern Environments: Academic exposure or basic understanding of cloud environments (AWS, Azure) and version control systems (Git).
• Communication: Ability to document technical steps clearly and present findings to technical peers.