Leidos has a new and exciting opportunity for a Principal Software Engineer in our National Security Sector's (NSS) 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 Description
As a Software Engineer on this program, you will have the opportunity to build strong systems, software, and cloud environments while providing operations and maintenance for critical systems. This role will provide technical expertise in the design, development, implementation and testing of customer tools and applications. Based in a DevOps framework, this role participates in and/or directs major deliverables of projects through all aspects of the software development lifecycle including scope and work estimation, architecture and design, coding and unit testing.
Primary Responsibilities
Participates in and/or directs software programming initiatives using Java, JavaScript, Python, SpringBoot, and Hibernate.
Develops software system validation and testing methods using Junit and Katalon and uses integrated custom developed software solutions to leverage automated deployment technologies
Develop, prototype and deploy solutions within Commercial Cloud Solutions leveraging infrastructure platform services
Coordinate closely with team members, Product Owners and Scrum Masters to ensure User Story alignment and implementation to customer use cases
Support the Agile software development lifecycle following SAFe practices, using industry leading DevOps tools like GitHub, Jenkins, Unix bash scripting and leveraging tools such as JIRA and Confluence to track activities
Analyze (though proof of concept, performance, and end-to-end testing) and effectively coordinate Infrastructure needs driven by developed software to meet customer mission needs.
Apply and identify best practices and standard operating procedures creating innovative solutions to meet the technical needs of customers.
Basic Qualifications
In-depth use and experience in common Agile practices, service-orientated environments, and development practices
In-depth experience with Java, Spring, C2S and the software development lifecycle, delivering within DevOps toolsets/practices
Direct experience utilizing software testing performance tools, such as Junit/Katalon and scripting languages, such as Python and Bash, while working in an Agile development environment
In-depth experience with development in Commercial Cloud Platforms (ex, AWS, Google Cloud, Azure) and leveraging cloud data services (ex: S3, RDS, EFS)
In-depth experience using version control systems and issue/problem tracking systems
Bachelor’s degree with 12 or more years of prior relevant experience or Master’s with 10 or more years of relevant experience. Additional years of experience may be substituted in lieu of a degree.
To be considered must have an active TS/SCI with polygraph security clearance
Preferred Qualifications
Experience with structured analysis and design methodologies
Understanding of the customer's system development policies.
CABARESTON
Come break things (in a good way). Then build them smarter.
We're the tech company everyone calls when things get weird. We don’t wear capes (they’re a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for “how it’s always been done.”
Original Posting:August 1, 2025For 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:Pay Range $126,100.00 - $227,950.00The 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.
Top Skills
What We Do
We Are Leidos
For 50 years we have been tackling some of the biggest problems that face our nation and our world.
OUR MISSION
Through our culture of innovation and history of performance, we develop deep customer trust built on integrity and create enduring solutions that improve our world. Leidos is a science and technology solutions leader working to address some of the world’s toughest challenges in the defense, intelligence, homeland security, civil, and healthcare markets. The company’s 43,000 employees support vital missions for government and commercial customers. Headquartered in Reston, Va., Leidos reported annual revenues of approximately $11.09 billion for the fiscal year ended January 3, 2020.
Leidos was cited for the meaningful work employees perform that is challenging, impactful, and aligned with our customers’ missions as reasons professionals want to work and stay at our company. Leidos has also been named to lists including Forbes’ Best Employers for Diversity, Forbes’ America’s Best Employers for Women, Military Times Best for Vets Employers, and Ethisphere Institute’s World's Most Ethical Companies®.
Employees enjoy career enrichment opportunities available through mobility and development and experience rewarding relationships with supportive supervisors and talented colleagues and customers. Employees appreciate our flexible work environment, allowing for and encouraging a true work-life balance. Our professionals are also excited about our Employee Resource Groups, like the newly launched Collaborative Outreach with Remote and Embedded Employees (CORE), which strives to create an environment where every employee, regardless of location, feels fully engaged as a valued employee of Leidos.
Your most important work is ahead.
