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Principal Software Engineer; SWE

Job in Fort Meade, Anne Arundel County, Maryland, USA
Listing for: Leidos Inc
Full Time position
Listed on 2026-07-28
Job specializations:
  • Software Development
    Software Engineer, C++ Developer
Salary/Wage Range or Industry Benchmark: 25000 USD Yearly USD 25000.00 YEAR
Job Description & How to Apply Below
Position: Principal Software Engineer (SWE-4)

Description

Leidos has a new and exciting opportunity for a Principal Software Engineer in our Intelligence 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 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.

Join us and make a difference in National Security!

Job Summary

Our LOE program provides our customer's Operations organization with the best possible solutions for their mission needs. We achieve this through rapid prototyping, new development, and advanced technology research. From leading-edge visualizations to analytic development, we're always pushing the boundaries to find new and better data sources and tradecraft to answer intelligence questions. With a focus on collaboration and a fast-paced environment, our prototype development program is the ideal place to grow your skills and make a real impact.

Click here to learn more about how this program Delivers Mission Success!

Seeking a motivated Principal Software Engineer to support the exciting Advanced Analytics Team mission. The engineer will work closely with mission stakeholders to analyze software requirements, design innovative technical solutions, develop software applications, and implement high-performance capabilities supporting advanced mission objectives.

Qualified candidates are eligible for enhanced incentives including up to a $25K cash sign on bonus or a paid time off bonus.

Responsibilities and Qualifications
  • 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.
  • Technical Proficiency
    :
    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; and develop advanced tools for binary analysis, shellcode detection, malware analysis, function identification, and reverse engineering of compiled software.
  • Qualifications
    :
    Bachelor’s degree plus eleven (11) years of relevant experience or equivalent. 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.
  • Security Clearance
    :
    Active TS/SCI with Polygraph required to be considered for this role.
  • Desirable Skills
    :
    Familiarity with malware analysis, reverse engineering, and protocol analysis.
Pay Range

Pay Range $ - $.

Benefits

Payment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement.

Equal Employment Opportunity

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.

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