Leidos
Overview
Leidos has an exciting opportunity for a Sr. Software Engineer! Must have an active TS/SCI Polygraph up front. No exceptions. Responsibilities
You will perform software development lifecycle (SDLC) activities as both an individual and a member of our agile development team building a large complex enterprise system. Develop the full range from Agile user stories to concepts, through development, unit testing, integration and test, and deployment of new capabilities for the large complex enterprise system. Follow Behavior-driven Development (BDD) patterns and implement robust testing leveraging DevOps automation and appropriate test automation tools. Develop server-side business logic as well as client web application and user interface (UI) development using technologies such as Java, Python, embedded C/C++, Java cryptographic framework, XML, and web UI (Angular, JavaScript, CSS, HTML, etc.). Participate actively in daily stand-ups, Sprint Planning, Program Increment (PI) Planning, and other related team activities. Analyze complex system requirements, use design software tools, and apply formal specifications and data flow diagrams to ensure 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, promote code reuse and cross-program collaboration, and reduce 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. Basic Qualifications
Must have a BS degree and 12 - 15 years of prior relevant experience or 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), Java EE (JPA, EJB, JTA, Servlet), Jackson, Jersey, Swing, JavaFX. Must have experience or familiarity with multiple languages such as JavaScript, Python, C/C++, Groovy, SQL. Must have experience with development IDEs such as Eclipse, Visual Studio Code, Visual Studio, Rhapsody, WebStorm. Must have experience with databases such as Oracle, PostgreSQL, MongoDB, SQL Server. Must have experience with Web Application User Interface Development and related technologies (Spring, AngularJS, JSON, HTML, XML, XSLT). Must have experience with software source control and configuration management tools. Must have experience with cryptographic technology foundations (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 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. Preferred Qualifications
Experience with the following: Java EE (EJB, JPA, JTA, JAX-B, JAX-RS, JAX-WS), SQL, application servers (Tomcat, WebLogic, JBoss), Spring framework, scripting. Experience or familiarity with technologies: XML/XSD/SOAP/WSDL/XSLT, REST, JSON, YAML, Containers (Docker, Podman, Kubernetes, OpenShift). Experience with Javascript frameworks: AngularJS, 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 with high-level requirements management including decomposition, secure systems engineering, trade-off analysis, interface control, and CI/testing. Experience with Agile practices such as Pair Programming, TDD, Refactoring, ATDD, and BDD. Experience with Secure Software development (Layer 7 Policy). Experience with Scrum and SAFe methodologies, SAFe Agilist Certification, or experience as an Agile team member. Original Posting: June 11, 2025 #J-18808-Ljbffr
Leidos has an exciting opportunity for a Sr. Software Engineer! Must have an active TS/SCI Polygraph up front. No exceptions. Responsibilities
You will perform software development lifecycle (SDLC) activities as both an individual and a member of our agile development team building a large complex enterprise system. Develop the full range from Agile user stories to concepts, through development, unit testing, integration and test, and deployment of new capabilities for the large complex enterprise system. Follow Behavior-driven Development (BDD) patterns and implement robust testing leveraging DevOps automation and appropriate test automation tools. Develop server-side business logic as well as client web application and user interface (UI) development using technologies such as Java, Python, embedded C/C++, Java cryptographic framework, XML, and web UI (Angular, JavaScript, CSS, HTML, etc.). Participate actively in daily stand-ups, Sprint Planning, Program Increment (PI) Planning, and other related team activities. Analyze complex system requirements, use design software tools, and apply formal specifications and data flow diagrams to ensure 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, promote code reuse and cross-program collaboration, and reduce 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. Basic Qualifications
Must have a BS degree and 12 - 15 years of prior relevant experience or 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), Java EE (JPA, EJB, JTA, Servlet), Jackson, Jersey, Swing, JavaFX. Must have experience or familiarity with multiple languages such as JavaScript, Python, C/C++, Groovy, SQL. Must have experience with development IDEs such as Eclipse, Visual Studio Code, Visual Studio, Rhapsody, WebStorm. Must have experience with databases such as Oracle, PostgreSQL, MongoDB, SQL Server. Must have experience with Web Application User Interface Development and related technologies (Spring, AngularJS, JSON, HTML, XML, XSLT). Must have experience with software source control and configuration management tools. Must have experience with cryptographic technology foundations (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 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. Preferred Qualifications
Experience with the following: Java EE (EJB, JPA, JTA, JAX-B, JAX-RS, JAX-WS), SQL, application servers (Tomcat, WebLogic, JBoss), Spring framework, scripting. Experience or familiarity with technologies: XML/XSD/SOAP/WSDL/XSLT, REST, JSON, YAML, Containers (Docker, Podman, Kubernetes, OpenShift). Experience with Javascript frameworks: AngularJS, 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 with high-level requirements management including decomposition, secure systems engineering, trade-off analysis, interface control, and CI/testing. Experience with Agile practices such as Pair Programming, TDD, Refactoring, ATDD, and BDD. Experience with Secure Software development (Layer 7 Policy). Experience with Scrum and SAFe methodologies, SAFe Agilist Certification, or experience as an Agile team member. Original Posting: June 11, 2025 #J-18808-Ljbffr