Description
Leidos has a new and exciting opportunity for a Sr. Offensive Cyber Engineer in our INTEL Sector's Cyber & Analytics Business Area (CABA). Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management.
We are seeking an experienced Sr. Offensive Cyber Engineer (Penetration Tester) with detection engineering capabilities to conduct comprehensive security assessments on enterprise and government systems. In this role, you will perform offensive testing while collaborating closely with defensive security teams (CEMA Resiliency System [CRS]) to translate attack findings into resilient threat detection capabilities.
Primary Responsibilities:
- Develop custom exploits, payloads, and automation tools tailored to identified system vulnerabilities.
- Serve as the site technical lead, executing end-to-end penetration tests and vulnerability assessments across enterprise, government, and classified environments.
- Perform deep-dive analysis across network protocols, cloud infrastructure (AWS/Azure/GCP), and web applications.
- Collaborate with detection engineering and CEMA Resiliency System (CRS) teams to validate, test, and improve threat detectors based on offensive tactics, techniques, and procedures (TTPs).
- Travel to operational testing events to verify exploit effectiveness in real-world scenarios.
- Research technical system documentation and serve as a Subject Matter Expert (SME) on system security classification guides and detection capabilities.
- Author and present comprehensive technical findings, remediation recommendations, and after-action reports for both technical staff and executive stakeholders.
- Support long-term operational planning by identifying future test opportunities to strengthen organizational security posture.
Basic Qualifications:
- Bachelor’s degree in Cybersecurity, Computer Science, Computer Engineering, Electrical Engineering, or a related technical discipline with 8+ years of relevant experience; OR a Master’s degree with 6+ years of experience; OR an additional 4 years of related experience in lieu of a degree (12+ years total).
- 8+ years of dedicated hands-on experience in penetration testing, red teaming, or offensive security operations.
- Proficiency with Linux distributions (e.g., Kali, Parrot) and Windows operating systems at an administrative/deep-system level.
- Demonstrated scripting and development capability using languages such as Python, Bash, or PowerShell for tool automation and exploit modification.
- Strong understanding of networking concepts, TCP/IP architecture, and security protocols.
- Must be a US Citizen and be able to obtain and maintain an active Top Secret / Sensitive Compartmented Information (TS/SCI) security clearance.
- Willingness to work on-site in Lawton, OK (or relocate prior to start date) and travel to testing events as required.
Benefits: Leidos offers competitive benefits, including Paid Time Off, 11 paid Holidays, 401K with a 6% company match and immediate vesting, Flexible Schedules, Discounted Stock Purchase Plans, Technical Upskilling, Education and Training Support, Parental Paid Leave, and much more.