> Markdown version of [/jobs/ext/3989066-mid-level-java-software-engineer-337k-yr-ts-sci-fs-poly](https://www.wearedevelopers.com/jobs/ext/3989066-mid-level-java-software-engineer-337k-yr-ts-sci-fs-poly). 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 Java Software Engineer [$337k/yr+] TS/SCI-FS Poly - **Company:** SYSTOLIC, INC. - **Location:** Herndon, VA, United States - **Experience:** Experienced - **Salary:** $337,000.0 - **Contract:** Permanent contract - **Skills:** Web Interfaces, Java (Programming Language), JavaScript (Programming Language), Apache Tomcat, Server Applications, Confluence, Cascading Style Sheets (CSS), Relational Databases, Linux, Java Servlet, JQuery, Python (Programming Language), Linux System Administration, MariaDB, MySQL, OpenSSL, Public Key Infrastructure, Web Applications, Git, Front End Software Development, Restful APIs - **Published:** October 28, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9270141/mid-level-java-software-engineer-337kyr-tssci-fs-poly ## About the Role * Degree: Technical bachelor's degree or equivalent experience * Years of experience: 13+ years * Total Compensation: $337k+ yearly (tentative) ## Description * Develop and maintain enterprise web applications utilizing Core Java 17+, Jakarta Servlets, and Apache Tomcat. * Implement secure RESTful web services with MariaDB and MySQL database integration. * Manage PKI certificate handling, SSL/TLS protocols, and cryptographic operations within a Linux ecosystem., * Design, develop, and maintain robust web applications using Core Java 17+, Jakarta EE, and Python. * Build interactive front-end web interfaces using JavaScript, jQuery, and HTML/CSS. * Implement secure REST APIs, PKI SSL/TLS certificates, OpenSSL tools, and cryptographic functions. * Deploy, configure, and maintain relational databases using MariaDB and MySQL on Apache Tomcat application servers. * Perform Linux systems administration, Git version control, requirements analysis, and documentation in Confluence.