Principal Software Engineer (SWE-4)

Mission Focus

Design, develop, test, debug, and maintain software applications supporting mission requirements.
Analyze customer needs, develop software prototypes, engineer technical solutions, implement algorithms, and translate conceptual designs into scalable software architectures.

Job Responsibilities/Qualifications

• Develop and debug software using object-oriented programming languages;
  perform software engineering and technical design activities;
  analyze and understand legacy code;
  develop efficient algorithms utilizing data structures, dynamic programming, heuristics, and modeling techniques;
  conduct software testing and troubleshooting;
  work at the operating system level, including file I/O, system interfaces, and low-level programming concepts;
  develop advanced tools for binary analysis, shellcode detection, malware analysis, function identification, and reverse engineering of compiled software.

Technical Proficiency

• Proficiency with Python, and ability to read/understand C/C++, and Assembly (x86).
• Experience with software architecture, operating system design, compilers, and debugging.
• Comfortable working with operating system internals, low-level software development, file I/O, system APIs, memory management, and executable program analysis.

Qualifications

• Bachelor's degree plus eleven (11) years of relevant experience or equivalent.
• Active TS/SCI with Polygraph required to be considered for this role.

Desirable Skills

• Familiarity with malware analysis, reverse engineering, and protocol analysis.

Benefits

• Competitive compensation.
• Health and Wellness programs.
• Income Protection.
• Paid Leave.
• Retail.

About the Role

Join us and make a difference in National Security!

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

Pay and Benefits

Pay Range $131,300.00 - $237,350.00
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.

Securing Your Data

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).

Commitment to Non-Discrimination

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.