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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Core Java Software Engineer - TS/SCI with Polygraph - **Company:** General Dynamics Information Technology - **Location:** Chantilly, VA, United States - **Contract:** Permanent contract - **Skills:** Java (Programming Language), JavaScript (Programming Language), Active Directory, Application Programming Interfaces (APIs), Ajax (Programming Language), Apache HTTP Server, Apache Tomcat, Confluence, Command-Line Interface, System Configuration, Quartz (Graphics Layer), Linux, Apache Hypertext Transfer Protocol Server, Java Database Connectivity, Java Servlet, JQuery, Javaserver Pages, Python (Programming Language), Lightweight Directory Access Protocols (LDAP), Linux System Administration, MariaDB, MySQL, OpenSSL, Public Key Infrastructure, X.509, PuTTY, RSA (Cryptosystem), Session Management, Software Deployment, Systems Integration, Web Applications, Backend, Front End Software Development, Restful APIs, Software Version Control, Database Tools and Utilities - **Published:** August 26, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9117815/core-java-software-engineer-tssci-with-polygraph ## About the Role * Extensive experience with LDAP authentication and authorization, and custom LDAP-based solutions. * Strong experience with SSH and Putty, and custom SSH-based tools and applications on Linux platform. * Experience with Linux system administration and command-line tools. * Experience w/ Java REST API development, and API secure requests using application certificates and scalability for user activity monitoring. * Experienced w/ JDBC, DAO pattern and configuration using MariaDB (MySQL) and custom database tools and scripts - connection pooling without framework. * Experience deploying applications on Apache Tomcat, configuring Tomcat connectors, and managing HTTPD (Apache HTTP Server). * Experience w/ front-end development w/ JSP, AJAX, jQuery, JavaScript, HTML and CSS design for web presence and back-end development; * Experienced writing Jakarta Servlet API, including servlet lifecycle, request and response handling, and session management. * Experience w/ Java Base64 API, that encodes and decodes data, including its usage and limitations. * Knowledge of Java Cryptography Architecture (JCA) and its APIs. * Knowledge of encryption algorithms, such as AES, RSA and ECC and their usage in Java. * Experience w/Quartz Job Scheduling Library using Core Java development. * Experience w/ software version control tools (Git/GitHub) code repository; * Knowledge of PKI infrastructure and secure data transmission, and custom PKI-based tools and applications. * Knowledge of X.509 certificate handling, including certificate parsing, certificate validation and certificate chaining. * Experienced in generating, managing, and storing key pairs using OpenSSL, and RSA, troubleshooting PKI-related issues, including key pair and certificate problems. * Strong problem-solving skills and analytical thinking, attention to detail, and excellent communication and collaboration skills with technical and non-technical stakeholders. * Ability to analyze user needs to determine technical requirements. * Ability to write clean, maintainable, and well-documented code. * Shows initiative and offers ideas for new products and improvements to existing interfaces. * Actively keeps apprised of industry technological enhancements and changes. * Location: Chantilly, VA (On Customer Site) * Desired skills: * Some experience integrating Python into web applications; * Some experience Writing Confluence plugins * Familiar w/ Windows Active Directory Certificate Services (AD CS) - for issuing and managing key infrastructure (PKI) certificates * US Citizenship Required ## Related Videos - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [MySQL Protocol Features You Should Be Aware Of](https://www.wearedevelopers.com/videos/100267-mysql-protocol-features-you-should-be-aware-of) - [Navigating the Corporate Jungle: Life as a Developer in a large Company](https://www.wearedevelopers.com/videos/621-navigating-the-corporate-jungle-life-as-a-developer-in-a-large-company) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Coding for Good: Achieving social change with an app](https://www.wearedevelopers.com/videos/1645-coding-for-good-achieving-social-change-with-an-app) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [93 Java Interview Questions You Should Prepare For](https://www.wearedevelopers.com/magazine/14-93-java-interview-questions-you-should-prepare-for) - [Top 10 Java Libraries](https://www.wearedevelopers.com/magazine/364-top-10-java-libraries) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)