Senior Software Engineer

Overview

Leidos is a FORTUNE 500 company bringing a mix of innovative technology and sector expertise to customers in the national security, engineering, and the health industries. At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ success. We empower our teams, contribute to our communities, and operate sustainable. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community.

Our Mission, Vision, and Values guide the way we do business.

The Leidos Digital Modernization Sector is seeking a qualified and trained Software Engineer, Sr. for a role in an engineering support services program for U.S. Army customers at Aberdeen Proving Grounds, MD. The Software Engineer, Sr. is responsible for performing the software engineering function, including the design, development, testing, troubleshooting, and debugging of software programs for enhancements and new software-intensive systems and products to bring about the successful completion of the CYBERTRON program goals and objectives.

The CYBERTRON program delivers highly skilled engineering services to the U.S. Army C5

ISR Center in their mission of cybersecurity research and development and cryptographic modernization.

• Design, code, test, debug and document software in a variety of programming languages.
• Analyze and/or code computer software using the latest programming languages and techniques.
• Perform software requirements analysis, analysis of hardware compatibility, development of software products and tools used for design, development and maintenance of infrastructure, and platforms.
• Create strategies for developing IT systems and applications.
• Evaluate alternative approaches and select optimal approaches.

• Must be a US Citizen and possess a Secret Clearance
• Bachelor’s degree in computer science, electronics engineering or other engineering/technical discipline or 10+ years of relevant experience.
• Appropriate DoD 8750 certification (Security+ or higher).
• Have experience in a variety of software programming languages.
• Have experience in a variety of business systems and applications.
• Also have experience in designing, testing, debugging and documenting software.
• Requires expert knowledge of and ability to apply advanced technical principles, theories, and concepts.

• Eligible for TS / SCI
• Experience supporting Army programs

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.

February 5, 2026

Pay Range $ - $

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 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.

Pay and benefits are fundamental to any career decision. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement.

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. Leidos will only communicate through emails generated by the  automated system. If you have concerns about a purported email, contact Leidos Careers Fraud  at the email address provided by Leidos.

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.