> Markdown version of [/jobs/ext/146334-mid-level-software-engineer](https://www.wearedevelopers.com/jobs/ext/146334-mid-level-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Mid-Level Software Engineer - **Company:** Leidos, Inc. - **Location:** Huntsville, AL, United States - **Experience:** Experienced - **Salary:** $107,900.0 - $195,050.0 - **Contract:** Permanent contract - **Skills:** HTML, Java (Programming Language), JavaScript (Programming Language), XML Schema, Microsoft Windows, Agile Methodology, Apache Tomcat, Server Applications, Application Layers, Public-Key Cryptography, Acceptance Test-Driven Development, Behavior-Driven Development, Oracle WebLogic Server, Bootstrap (Software), C++ (Programming Language), CMake, Code Reuse, Encodings, Databases, Continuous Integration, Linux, Digital Signature, Eclipse (Software), Enterprise JavaBeans, Java Platform Enterprise Edition (J2EE), Network Interface Controllers, Fault Tolerance, FitNesse, Design of User Interfaces, Groovy, Integrated Development Environments, JavaFX, Java Persistence API, Java Servlet, Spring Framework, Java Transaction API, JSON, Java API for RESTful Web Services (JAX-RS), WildFly (JBoss AS), JQuery, Junit, Python (Programming Language), Key Management, PostgreSQL, Apache Maven, Microsoft Visual Studio, Microsoft SQL Server, MongoDB, Cisco Nexus Switches, OpenShift, Oracle (Applications), Pair Programming, Public Key Infrastructure, Scrum Methodology, Mockito, Satcom, Rhapsody, Requirements Management, Scaled Agile Framework, Selenium, Simple Object Access Protocol (SOAP), Software Engineering, Software Requirements Analysis, SQL Databases, Web Applications, Web Services, Web Services Description Language, WebStorm, Extensible Markup Language (XML), Extensible Stylesheet Language Transformations (XSLT), YAML, Scripting, Test-Driven Development (TDD), AngularJS, Jax Ws, Kubernetes, Infrastructure Automation Frameworks, Build Tools, Formal Methods, Restful APIs, Cucumber (Software), Code Restructuring, Software Version Control, Jasmine, Docker, Jenkins - **Published:** May 19, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=739b70c2414539f6 ## About the Role * Bachelor's Degree in a technical discipline and 8 years of related 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 to include Boot and Data, Java Enterprise Edition (JEE) (i.e., JPA, EJB, JTA, Servlet), Jackson, Jersey, Swing, JavaFX. * Must have experience or familiarity with multiple languages such as Javascript, Python, C/C++, Groovy, Structured Query Language (SQL). * Must have experience with development IDEs (Integrated Development Environments) 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, knowledge of databases and structures, Spring Framework, and/or experience working with AngularJS, JSON, HTML, XML, XSLT. * Must have experience with software source control and configuration management tools. * Must have experience developing on Windows 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. This position is based near Columbia, Maryland, with alternative duty locations in San Diego, California, Englewood, Colorado, or Huntsville, Alabama. Relocation assistance may be available for qualified candidates. Clearance Required: * Must have TS/SCI with Polygraph., * Experience with the following: Java Enterprise Edition (JEE) (i.e., EJB, JPA, JTA, JAX-B, JAX-RS, JAX-WS), SQL, application servers (Tomcat, WebLogic, 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, OpenShift). * Experience with Javascript frameworks: AngularJS, Bootstrap, JQuery. * Experience with Testing and Mocking frameworks: JUnit, Jupiter, Mockito, Jasmine, Karma, Cucumber, Unified Functional Tester (UFT), Selenium, FITNesse. * Experience with build tools: Maven, CMake, RPM, Jenkins, Nexus. * Experience developing on Linux operating systems. * Experience with technologies underlying cryptographic systems (symmetric and asymmetric cryptography, ASN.1 encoding, XML canonicalization, digital signatures). * Experience with high level requirements management including requirements decomposition, secure systems engineering and development, trade-off analysis, interface control, and testing and continuous integration. * Experience in software development on Agile teams using Agile Developer practices such as Pair Programming, Test Driven Development (TDD), Refactoring, and Acceptance Test Driven Development (ATDD). * Experience with Behavior Driven Development (BDD). * Secure Software development (i.e., Layer 7 Policy). * Experience with the Scrum, Scaled Agile Framework (SAFe) methodology, SAFe Agilest Certification, or experience as a member of an Agile team. ## Description Leidos is seeking a Mid-Level Software Engineer to join a high-impact, multi-agency program serving the United States Space Force (USSF) / Space Systems Command (SSC), the United States Air Force (USAF), and other critical mission stakeholders. The selected individual will play key role in enhancing, testing, and deploying a large-scale Satellite Communications (SATCOM) system to an existing infrastructure. The ideal candidate brings deep expertise in public key infrastructure (PKI) and key management, excels at complex problem solving, and has a strong record of delivering results as part of a high-performing team in a fast-paced Agile Development environment. This position offers a unique opportunity to enhance the resilience and cybersecurity of mission-critical communications that protect our nation., * Perform software development activities both independently and as a member of an Agile team. * Actively participate in Agile ceremonies, including daily stand-ups, Sprint Planning, Program Increment (PI) Planning, and related team events. * Analyze and interpret complex system requirements to inform software design and implementation. * Use design tools and formal methods (e.g., formal specifications, data flow diagrams, and other accepted design techniques) to develop software solutions. * Apply sound software engineering principles to produce code that is modifiable, efficient, reliable, understandable, fault tolerant, and reusable. * Provide software process management and control throughout the coding portion of the software development lifecycle. * Promote code reuse and cross-program collaboration by creating common functions and shared actions for developers and testers, reducing maintenance costs. * Engineer, author, optimize, and document automation scripts in a development environment and deploy them to test and production benches. ## Related Videos - [The Resilience of the World Wide Web](https://www.wearedevelopers.com/videos/1281-the-resilience-of-the-world-wide-web) - [CI/CD with Github Actions](https://www.wearedevelopers.com/videos/856-ci-cd-with-github-actions) - [Tips and Tricks for Working with JSON](https://www.wearedevelopers.com/videos/1229-tips-and-tricks-for-working-with-json) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [NoLoJS - Avoiding JavaScript Cruft with HTML and CSS - Aaron T. 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