Sr. Software Engineer TS​/SCI Polygraph

Leidos has an exciting opportunity for a Sr. Software Engineer! Must have an active TS/SCI Polygraph up front. No exceptions.

You will perform software development lifecycle (SDLC) activities as both an individual and a member of our top‑notch agile development team building a large complex enterprise system. Development includes the full range of turning Agile user stories into implementable concepts, through development, unit testing, integration and test, and deployment of the new capabilities for the large complex enterprise system. Following the Behavior‑driven Development (BDD) pattern, developers are responsible for implementing robust testing leveraging Dev Ops automation and, where appropriate, use of test automation commercial tools.

There are a range of opportunities for server‑side business logic implementation as well as client web application and user interface (UI) development. Java, Python, embedded C/C++, Java cryptographic framework, XML, web UI (i.e., Angular, JavaScript, CSS, HTML, etc.) and special purpose device programming opportunities are available.

• Actively participate in daily stand‑ups, Sprint Planning, Program Increment (PI) Planning, and other related team activities.
• Analyze and study complex system requirements; use design software tools and provide support using formal specifications, data flow diagrams, and other accepted design techniques.
• Use sound software engineering principles to ensure that developed code is modifiable, efficient, reliable, understandable, fault‑tolerant, and reusable.
• Provide software process management and control throughout the coding portion of the software development process and promote code reuse and cross‑program collaboration while reducing maintenance costs by creating common functions and shared actions for developers and testers.
• Engineer, author, tune, and document automation scripts in a development environment and deploy to the test/production bench.

• Must have a BS degree and 12-15 years of prior relevant experience or a Masters with 10-13 years of prior relevant experience. Additional experience may be substituted for a degree.
• Must have demonstrated experience with Java.
• Must have experience or familiarity with multiple Java frameworks:
  Spring Boot and Data, JEE (i.e., JPA, EJB, JTA, Servlet), Jackson, Jersey, Swing, JavaFX.
• Must have experience or familiarity with multiple of the following languages such as JavaScript, Python, C/C++, Groovy, Structured Query Language (SQL).
• Must have experience with development IDEs such as Eclipse, Visual Studio Code, Visual Studio, Rhapsody, Web Storm.
• Must have experience with databases such as Oracle, Postgre
  
  SQL, Mongo
  
  DB, SQL Server.
• Must have experience with Web Application User Interface Development, knowledge of databases and structures, Spring Framework, and/or experience working with Angular
  
  JS, JSON, HTML, XML, XSLT.
• Must have experience with software source control and configuration management tools.
• Must have experience with technologies underlying cryptographic systems (symmetric and asymmetric cryptography, ASN.
  1 encoding, XML canonicalization, digital signatures).
• Must have experience developing on Windows, and/or Linux operating systems.
• Must have documented professional experience with web services.
• Must have a strong understanding of sound software development principles and practices.
• Must be able to plan and prioritize personal tasking and be able to communicate effectively verbally and in writing.
• Must be an independent thinker, capable of performing high quality work, both independently and with a team in a fast‑moving environment.

• Experience with Java Enterprise Edition (JEE) (i.e., EJB, JPA, JTA, JAX‑B, JAX‑RS, JAX‑WS), SQL, application servers (Tomcat, Web Logic, JBoss), Spring framework, scripting.
• Experience or familiarity with multiple of the following technologies: 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,…