Sr. Offensive Cyber Engineer

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. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it.

We are recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We’re already at step 30 - and moving faster than anyone else dares.

Join us and make a difference in National Security! 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.

This is a full-time position with the Leidos office in Lawton, OK. The position consists of developing custom exploits and automation tools based on identified vulnerabilities and collaborating with detection engineering teams to translate offensive security findings into defensive capabilities. This includes traveling to testing events to verify exploit effectiveness in operational environments and coordinating with Cyber Response System (CRS) teams to develop and validate threat detectors.

The position is responsible for researching and analyzing technical documentation on assigned systems, serving as a subject matter expert on system classification guides and detection capabilities, and ensuring timely delivery of technical findings, recommendations, and after-action reports to both offensive and defensive security stakeholders. The position also includes serving as the sites technical lead, performing comprehensive penetration tests and vulnerability assessments on enterprise and government systems, including classified environments, while conducting deep-dive analysis of network protocols, cloud infrastructure, and web applications.

At higher technical levels, this includes planning and identifying future testing events and opportunities to enhance organizational security posture.

At Leidos, we offer 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.

Pay and Benefits Pay and benefits are fundamental to any career decision. That’s why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available here.

• 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…