Leidos
Leidos is an industry and technology leader serving government & 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 $17.2 billion for the fiscal year ended January 2, 2026. 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 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, visit careers.leidos.com for our latest opportunities.
Open Positions at Leidos
33 open positions
Leidos is seeking an Applications Software Engineer to develop secure web services, full-stack applications, and persistence layers supporting cybersecurity and cryptographic key management missions. The role combines hands-on development with automated testing and secure software engineering practices in a mission-focused Agile environment.
The .NET Developer will modernize DOJ and ATF applications by migrating authentication from ADFS to Okta while developing, testing, and maintaining software across a DevOps environment. This is a fully remote role requiring U.S. citizenship and successful completion of a Government Public Trust investigation.
Operating Systems Test Engineer supporting the Air Battle Management System’s digital infrastructure by validating, securing, and deploying Windows and Linux operating systems in a DoD environment. The role combines system integration testing, compliance enforcement, configuration management, and customer-facing technical support.
Real-Time Software Engineer developing and integrating high-performance C/C++ signal-processing systems for electronic warfare applications. The role combines real-time software, hardware integration, RF device control, and field testing in an onsite Arlington, VA environment.
Join Leidos as an Associate Software Developer building mission-critical microservices for the L-CAP hybrid-cloud platform supporting next-generation air traffic management. The hybrid role offers hands-on development, testing, and modernization work in a safety-critical government environment.
Leidos is seeking an Associate Software Developer to build and test distributed microservices for the mission-critical L-CAP air traffic automation platform. The role offers early-career engineers hands-on experience modernizing complex aviation systems in a hybrid cloud environment.
Platform Engineer building and evolving secure, reliable cloud and hybrid platforms that enable efficient application delivery. The role focuses on automation, infrastructure as code, observability, and operational excellence across a mission-critical technology environment.
Leidos is seeking a Junior Software Engineer to develop and maintain software that improves aircraft runway and terminal congestion for the FAA’s TFDM program. The role combines full-stack development, structured data processing, testing, cloud/DevOps tooling, and AI-assisted development.
Leidos is hiring a ServiceNow Software Engineer to support its mission-driven technology work. The posting provides limited role detail but lists an anticipated annual pay range of $87,100 to $157,450.
Leidos is seeking a Senior Full Stack Application Developer to build and maintain secure financial planning and contract management applications supporting the Department of Defense. The role is based on-site in Tampa with some remote capability and requires an active Top Secret clearance.
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