Jobs at Leidos
26,584 open positions
Leidos is a leading technology and engineering company that delivers solutions for defense, civil, and health agencies. With a focus on cyber, AI, and systems integration, Leidos helps clients protect critical infrastructure and innovate across national security and public health.
Leidos hires a wide spectrum of talent—from software engineers and data scientists to cybersecurity analysts, systems integrators, and project managers. Candidates can expect competitive benefits, continuous learning opportunities, and projects that have real‑world impact on government and commercial customers.
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Senior Information Security Systems Engineer
Company: Leidos
Location: Linthicum Heights, MD
Posted Jan 23, 2025
The job posting is for a Senior Information Security Systems Engineer (ISSE) role. The successful candidate will join a team of security engineers, providing Information Assurance (IA) Architecture Analysis and Security Engineering Support. The role involves delivering threat-informed cybersecurity products, conducting risk assessments, and supporting the design and implementation of real-time threat detection and mitigation capabilities. The ISSE will also aid in the development of innovative solutions, engage stakeholders, and ensure security objectives are met. The role requires a Bachelor's degree in a related field, 14+ years of experience, CISSP or CASP certification, and expertise in the RMF and cybersecurity risk assessments. Clearance requirements include an active TS/SCI with polygraph and US citizenship.
Software Engineer
Company: Leidos
Location: Alexandria, VA
Posted Jan 23, 2025
Leidos is seeking a Software Engineer to join a high-performing agile team supporting a significant cryptographic key management program. The role involves software development activities, including turning agile stories into implementable concepts, development, testing, and deployment. The engineer will use BDD patterns, implement robust testing, and have opportunities for server-side business logic, client web application, and UI development. Java, Python, embedded C/C++, Java cryptographic framework, XML, web UI, and special purpose device programming opportunities are available. The role requires a bachelor's degree and 4-8 years of relevant development experience, or a master's with 2-6 years. Demonstrated experience with Java is mandatory, along with familiarity with multiple technologies including Java/JEE, Python, C/C++, SQL, SOAP, WSDL, WADL, PERL, PowerShell, VBS, Eclipse, Postgres, Oracle, Jenkins on a Windows platform. Experience with User Interface development, databases, XHTML, HTML, XML, XSLT, and development on Windows and/or Linux operating systems is also required. The ideal candidate will have a strong understanding of software development principles, be able to plan and prioritize tasks, communicate effectively, and work independently or as part of a team in a fast-paced environment. TS/SCI with Polygraph security clearance is required.
Sr. Communications Specialist - Tech Writer (McLean, VA) w active TS/SCI Poly
Company: Leidos
Location: McLean, VA
Posted Jan 23, 2025
Configuration Management Technical Writer
Company: Leidos
Location: Gambrills, MD
Posted Jan 23, 2025
Training Auditor and Certification Authority, Journeyman
Company: Leidos
Location: Springfield, VA
Posted Jan 23, 2025
Leidos, a company dedicated to delivering innovative solutions and contributing to communities, is hiring for a Training Auditor and Certification Authority, Journeyman position. The role involves developing tests, conducting training classes, and formulating teaching outlines for OSINT Analysts. The successful candidate will need an active DoD Top Secret/SCI security clearance, relevant experience, and skills in developing and maintaining budget reports. The job is expected to start soon after a contract award.