Senior Software Engineer (SWE-4

Description

Leidos has a new and exciting opportunity for a Senior
Software Engineer in our Intel Sector. 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 offer

Competitive benefits:

• 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.

Seeking an experienced software developer to create custom analytics to perform at scale, supporting requirements for the Joint Cyber Weapons (JCW) program for the United States Marine Corps. The software engineer will work closely with engineers and end users to support in research and development of software products designed to exploit vulnerabilities of adversary technology, develop and optimize algorithms, author scripts and develop utility software.

• Mission Focus
  :
  Work directly with Marine Corps Forces Cyberspace Command (MFCC), the Cyber Mission Force (CMF), as well as software engineers to solve the most demanding strategic problems; perform end-to-end software engineering to develop, integrate, test, and deploy tools and tradecraft into the customer’s corporate architecture.
• Technical Proficiency
  :
  Strong development experience with multiple programming languages (C, C++, Python, Java, JavaScript, Bash/Bourne/C Shell, Rust and Assembly). Candidate will have demonstrated experience writing, testing and refining code with the various programming languages. Demonstrated knowledge with various operating systems (Windows, Linux/Unix, Android, and iOS). Experience with establishing and maintaining CI/CD mechanisms in accordance with industry best practices. Experience with software planning;
  
  defining project scope, goals and timelines.
• Qualifications
  :
  Bachelor's degree in a technical discipline plus eight (8) to twelve (12) years of relevant software development experience.
• Security Clearance
  :
  Must possess an active TS/SCI with Polygraph to be considered for this role.
• Desirable Skills
  :
  Knowledge of CNO and experience with development tools such as Visual Studio and Git. Additional experience with Cloud computing platforms such as AWS, Microsoft Azure, and Google Cloud. Be familiar with and capable of learning various development tools, to include but not limited to Gnu Debugger (GDB), Valgrind, Low Level Debugger (LLDB), Interactive Disassembler (IDA) Pro, Ghidra, SCons.

At Leidos, the opportunities are boundless. We challenge our staff with interesting assignments that allow them to thrive professionally and personally. For us, helping you grow your career is good business. We look forward to learning more about you.

June 26, 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 $ - $

The Leidos pay range for this job level is a general guideline onlyand 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.

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 $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit

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.

• Competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

More details are available at

Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the  automated system – never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via Whats App, Telegram, etc.

If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are…