Software Engineer TS​/SCI Polygraph

Leidos offers an opportunity for Software Engineers across junior to senior levels in the Intelligence Sector’s Cyber & Analytics Business Area (CABA).
Leidos is at the forefront of Security Engineering, Computer Network Operations, Mission Software, Analytical Methods & Modeling, Signals Intelligence and Cryptographic Key Management. Benefits include Paid Time Off, 11 paid holidays, 401(k) with 6 % company match, flexible schedules, discounted stock purchase plans, technical upskilling, education & training support, parental paid leave and more.

Software Engineers will perform Software Development Life Cycle (SDLC) activities as part of an Agile development team building a large complex enterprise system. Work includes turning user stories into implementable concepts, developing, unit‑testing, integrating, testing, and deploying new capabilities. Developers also implement robust testing using Dev Ops automation and test‑automation commercial tools. Opportunities range from server‑side business logic to client web application and UI development using Java, Python, embedded C/C++, Java cryptographic framework, XML, Angular, JavaScript, CSS, HTML, etc.

The Software Engineer will work individually and as an Agile team member, participating in daily stand‑ups, sprint planning, PI planning, and other related activities. Responsibilities include analyzing and studying complex system requirements, using design software tools and formal specifications, developing code that is modifiable, efficient, reliable, fault‑tolerant and reusable, providing software process management, promoting code reuse, engineering and deploying automation scripts, and supporting test/production environments.

• BS degree and 8 – 12 years of relevant experience or Masters with 6 – 10 years; degree may be substituted with additional experience.
• Demonstrated experience with Java.
• Experience with multiple Java frameworks:
  Spring (Boot, Data), JEE (JPA, EJB, JTA, Servlet), Jackson, Jersey, Swing, JavaFX.
• Experience with JavaScript, Python, C/C++, Groovy, SQL.
• Experience with IDEs:
  Eclipse, Visual Studio Code, Visual Studio, Rhapsody, Web Storm.
• Experience with databases:
  Oracle, Postgre
  
  SQL, Mongo
  
  DB, SQL Server.
• Experience with web‑application UI development, Spring framework, and/or Angular
  
  JS, JSON, HTML, XML, XSLT.
• Experience with source‑control and configuration‑management tools.
• Experience developing on Windows operating systems.
• Documented professional experience with web services.
• Strong understanding of sound software‑development principles.
• Ability to plan, prioritize, and communicate effectively orally and in writing.
• Independent thinker capable of high‑quality work individually and in a fast‑moving team.
• Clearance Required:
  
  TS/SCI with Polygraph on Day One.

• Experience with JEE (EJB, JPA, JTA, JAX‑B, JAX‑RS, JAX‑WS), SQL, application servers (Tomcat, Web Logic, JBoss), Spring, scripting.
• Experience with XML/XSD/SOAP/WSDL/XSLT, REST, JSON, YAML, Containers (Docker, Podman, Kubernetes, Open Shift).
• Experience with JavaScript frameworks:
  Angular
  
  JS, Bootstrap, jQuery.
• Experience with testing and mocking frameworks: JUnit, Jupiter, Mockito, Jasmine, Karma, Cucumber, UFT, Selenium, FITNesse.
• Experience with build tools:
  Maven, CMake, RPM, Jenkins, Nexus.
• Experience developing on Linux operating systems.
• Experience with cryptographic technologies (symmetric/asymmetric cryptography, ASN.
  1, XML canonicalization, digital signatures).
• Experience with high‑level requirements management, secure systems engineering, trade‑off analysis, interface control, continuous integration.
• Experience with Agile practices:
  Pair programming, TDD, refactoring, ATDD, BDD.
• Experience with secure software development (Layer 7 policy).
• Experience with Scrum/SAFe and SAFe Agile certification or prior Agile team membership.

$ – $ (general guideline; compensation may vary based on responsibilities, education, experience, skills, internal equity, market data, and applicable agreements).

March 23, 2026 – anticipated close date at least three days after posting.

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 also considers applicants with criminal histories consistent with relevant laws.