> Markdown version of [/jobs/ext/4670628-senior-java-developer-ts-sci-with-poly-required](https://www.wearedevelopers.com/jobs/ext/4670628-senior-java-developer-ts-sci-with-poly-required). 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). --- # Senior Java Developer TS/SCI with Poly REQUIRED - **Company:** Cgi Inc. - **Location:** Arlington, VA, United States - **Experience:** Expert - **Salary:** $103,300 - **Contract:** Permanent contract - **Skills:** Clean Code Principles, Java (Programming Language), JavaScript (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Artificial Intelligence, Amazon Web Services, Application Lifecycle Management, Computing Platforms, Unit Testing, Databases, Relational Databases, Query Languages, Software Debugging, Software Design Patterns, Java Platform Enterprise Edition (J2EE), Graph Database, JSON, Python (Programming Language), Machine Learning, Model View Controller (MVC), NoSQL, Object-Oriented Software Development, Simple Object Access Protocol (SOAP), Software Engineering, Subversion, Web Applications, Working Model 2D, Extensible Markup Language (XML), Data Processing, Spring-boot, Git, Information Technology, Data Management, Software Version Control - **Published:** November 11, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9305848/senior-java-developer-tssci-with-poly-required ## About the Role Bachelor's degree in information technology, computer science or a related field. . A minimum of 7 to 10 years of experience in software development. . Experience with Java/JEE, Spring/Spring Boot, JSON, XML, MVC Frameworks, JavaScript. . Familiarity with Version Control Systems such as GIT or SVN. . Familiarity with Object Oriented Programming (OOP) design principles. . Familiarity with Database query language and concepts/designs of large scale database systems. . Experience with creating / using APIs, and familiarity with common design patterns such as REST, SOAP, or pub/sub., * GIT * Java Enterprise Editions JEE * JavaScript * MVC (model-view-controller) * Object Oriented Programming ## Description CGI Federal is seeking a Senior Java software engineer for an exciting opportunity within our Intel Community. Working as a software engineer, you will build out exciting new products and maintain core software platforms, which is a combination of web applications and a data processing/analytics platform. You will use a mixture of AWS Services and technologies such as Relational Databases, Graph Databases, and NoSQL, Python, and Artificial Intelligence/Machine Learning. You will troubleshoot and identify root causes of complex technical issues. You will also collaborate with all necessary partners to anticipate challenges, mitigate risks, and track and monitor trends to proactively solve problems. Your expertise will play a critical role in providing the exceptional service that our clients expect from us. This position is located in our Arlington, VA office; however, a hybrid working model is acceptable. Your future duties and responsibilities: . Manage the entire application lifecycle (concept, design, test, release and support) using an Agile Methodology. . Embrace agile methodologies and the advantages it brings to communication, flexibility, and delivering working code. . Produce fully functional applications writing clean code. . Work with business analysts to gather, document, and understand specific requirements to design technical software solutions. . Write unit tests to identify code defects. . Troubleshoot and debug to optimize performance. . Design interfaces to improve user experience. . Liaise with Product development team to plan new features. . Committed to building a supportive and inclusive team environment, where knowledge sharing and collaboration is required.