Leidos

Defensive Exploit Software Developer

United States · Work style not stated · Full time

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About the role

Description from the employer’s posting. Check the employer’s page for the current version.

EmployerLeidos
LocationUnited States
Work styleWork style not stated
Employment typeFull time
Employer posted7 Oct 2026

Leidos Dynetics is seeking a Defensive Exploit Software Developerto work with a diverse, highly skilled team to develop unique solutions for Cyber, EW, and PNT threats against US weapon systems. Our products are responsible for alerting our varied array of customers of potential cyber and EW attacks by creative Adversaries highly skilled at attacking. With that problem set in mind, our products need to be developed by equally creative minds that enjoy digging, researching, programming, questioning, and generally learning all they can do to do those exact things the Adversaries would.

Since those adversaries have a board scope, our approach to developing detection measures and mitigations need to be as well. This position will be working with a Red Team concentrating proving out vulnerabilities through tools developed internally by this team to help feed the detection engineering team to protect systems on the tactical edge.

Show full description

This is a full-time position with the Leidos Cyber Electromagnetic Activity (CEMA) team that is based in Lawton, OK, and will require the candidate to be able to obtain and maintain a TS/SCI Clearance.

Primary Responsibilities

Aiding in the development of software and/or techniques in the exploitation of researched network protocol, as well as detection of, identification of and results of those attacks.
Working with Red Team members in research of systems, contributing through code analysis as well as creating test tools.
Working with internal experts to perform network forensics to understand possible impacts on customer end-products/solutions.

Basic Qualifications

Bachelor’s Degree in computer science, computer engineering, cybersecurity, cyber engineering or similar degree
Experience using Wireshark
A good understanding of Cybersecurity
Experience with quick protype languages such as Python, to the level of being able to write one on request
Experience with Linux and Bash scripting
Exposure to security tools, protocols, or capture-the-flag (CTF) competitions
Ability to travel to customer sites up to 40% of time
US Citizenship required
Ability to obtain and maintain a TS/SCI Clearance.

Preferred Qualifications

Active TS/SCI Clearance.
Certifications such as Pentest+, Network+, Security+, CySA+, Linux+
Understanding of basic security concepts (CIA triad, authentication, encryption, etc.)

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo — because the mission demands it. We're not hiring followers. We're 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.

Original Posting:

October 7, 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.

Pay Range:

Pay Range $57,850.00 - $104,575.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.

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