Sr. Full Stack Developer

Description

Leidos has a new and exciting opportunity for a Sr. Full Stack Developer 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!

As a Full Stack Developer on this program, you will have the opportunity to build strong systems, software, and cloud environments and provide operations and maintenance for critical systems. The candidate will provide technical support in the design, development, implementation and testing of customer tools and applications. Based in a Dev Ops framework, this role participates in delivering major deliverables of projects through all aspects of the software development lifecycle including scope and work estimation, architecture and design, coding and unit testing.

• Participate in software programming initiatives to support innovation and enhancement, using Java, JavaScript, Python, Spring Boot, Hibernate
• Developing software system validation and testing methods using Junit and Katalon
• Develop and integrate custom developed software solutions to leverage automated deployment technologies leveraging an Atlassian tool suite like JIRA and Confluence to track activities
• Develop, prototype and deploy solutions within Commercial Cloud Solutions leveraging Infrastructure platform services creating innovative solutions to meet the technical needs of customers.
• 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
• Support the Agile software development lifecycle following Program SAFe practices while coordinating closely with team members, Product Owners and Scrum Masters to ensure User Story alignment and implementation to customer use cases
• Document and Perform systems software development, including deployment of build artifacts across different environments leveraging Git Flow constructs and using industry leading Dev Ops tools like Git Hub, Jenkins, and Unix bash scripting

• Significant experience with common Agile practices, service-orientated environments, and development practices
• Significant experience with Java, Angular, Spring and C2S and the software development lifecycle, with experience delivering within Dev Ops toolsets/practices
• Direct experience utilizing software testing performance tools, such as Junit or Katalon and scripting languages, such as Python, and Bash while working in an Agile development environment
• Significant experience developing in Commercial Cloud Platforms (ex, AWS, Google Cloud, Azure) and leveraging cloud data services (ex: S3, RDS, EFS)
• Significant experience using version control and issue/problem tracking systems
• Bachelor's degree with 8 or more years of prior relevant experience or Master's with 6 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

• Experience with structured analysis and design methodologies
• Experience working on the customer's systems
• Understanding of the customer's system development policies

Original Posting:
August 4, 2025

Pay Range: $ - $

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

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