Principal Software Engineer (SWE-4)

Leidos LLC; Fort Meade (MD); On-site; USD 131,000 - 237,000; Full time

Benefits offered by this job

Paid Time Off

11 paid Holidays

401K with company match

Flexible schedules

Stock purchase plan

Job summary

Leidos seeks a Principal Software Engineer in the INTEL Sector to advance mission software for security engineering, CNO, SIGINT, and cryptographic key management. The role emphasizes rapid prototyping, new development, and advanced technology research in a fast-paced environment.

Qualifications include a Bachelor’s degree with 11+ years of experience, proficiency in Python, and strong knowledge of C/C++ and Assembly (x86). Active TS/SCI with Polygraph is required for consideration.

Qualifications

• Bachelor's degree plus eleven (11) years of relevant experience.
• 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.

Responsibilities

• 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.
• Develop and debug software using object-oriented programming languages; perform software engineering and technical design activities; analyze and understand legacy code.
• 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.

Skills

Python

C/C++

Assembly (x86)

Software architecture

OS internals

Memory management

Education

Bachelor's degree + 11 years experience

Job description

Leidos has a new and exciting opportunity for a Principal 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, 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!

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.

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.

Job Summary

Our 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.

Job Responsibilities/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.

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

Pay Range

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.

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.

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.

We look forward to learning more about you.