Sr. Offensive Cyber Engineer

00180 Dynetics, Inc; Lawton (OK); On-site; USD 108,000 - 195,000; Full time

Benefits offered by this job

Paid Time Off

11 paid Holidays

401K with 6% match

Job summary

Leidos in Lawton, OK seeks a Sr. Offensive Cyber Engineer to conduct comprehensive security assessments on enterprise and government systems. You will perform offensive testing and coordinate with defensive teams to translate findings into detection capabilities.

Travel to testing events and work on-site at Lawton, OK. The role requires deep expertise in penetration testing, red teaming, and cloud/network security, with TS/SCI eligibility and strong communication skills.

Qualifications

• Bachelor’s degree in Cybersecurity, Computer Science, Computer Engineering, Electrical Engineering or related field (8+ years) or Master’s with 6+ years experience.
• 8+ years hands-on penetration testing, red teaming, or offensive security operations.
• Proficiency with Linux and Windows at admin/deep-system level; scripting in Python, Bash, or PowerShell.

Responsibilities

• Develop custom exploits, payloads, and automation tools for identified vulnerabilities.
• Lead end-to-end penetration tests across enterprise, government, and classified environments.
• Perform deep-dive analysis of networks, cloud infra (AWS/Azure/GCP), and web apps.
• Collaborate with CRS and detection engineering to validate and improve threat detectors.

Skills

Penetration testing

Red teaming

Security engineering

Python scripting

Offensive security

Education

Bachelor's degree in cybersecurity/CS/engineering

Master’s degree (or equivalent)

Tools

Kali Linux

Parrot OS

ScoutSuite

Pacu

Prowler

Git

Job description

Job Summary

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.

Benefits

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.

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.

Preferred Technical Qualifications

• Offensive Security Certifications: OSCP, GPEN, GWAPT, CPTS, or GXPN
• Defense & Detection: Experience in Detection Engineering, SOC operations, threat hunting, or utilizing frameworks like MITRE ATT&CK.
• Cloud & Modern Tech: Experience evaluating cloud environments (AWS, Azure, GCP) using assessment tools (e.g., ScoutSuite, Pacu, Prowler).
• Reverse Engineering / Low‑Level: Experience with binary analysis, disassembly, and reverse engineering.
• DevSecOps & Collaboration: Familiarity with Git version control, CI/CD pipelines, and Agile workflows.
• Professional Experience: Government/Defense Experience: Prior background working within DoD or classified environments with a solid grasp of classification markings and handling procedures.
• Strong written and verbal communication skills for technical documentation and executive reporting
• Ability to translate complex technical findings into actionable recommendations for diverse audiences
• Experience presenting security findings to both technical teams and executive leadership
• Proven ability to collaborate across offensive and defensive security teams

Pay Range

Pay Range $107,900.00 - $195,050.00

Original Posting

Original Posting: October 29, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Company Information

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $17.2 billion for the fiscal year ended January 2, 2026. For more information, visit www.Leidos.com.

Securing Your Data

Leidos will never ask you to provide payment-related information at any part of the employment application process. And Leidos will communicate with you only through emails that are sent from a Leidos.com email address. If you receive an email purporting to be from Leidos that asks for payment-related information or any other personal information, please report the email to [e-mail].

Commitment and Diversity

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.