> Markdown version of [/jobs/ext/4030238-mid-level-java-software-engineer-220k-yr-ts-sci-fs-poly](https://www.wearedevelopers.com/jobs/ext/4030238-mid-level-java-software-engineer-220k-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 [$220k/yr+] TS/SCI-FS Poly - **Company:** SYSTOLIC, INC. - **Location:** Annapolis Junction, MD, United States - **Experience:** Experienced - **Salary:** $220,000.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Agile Methodology, Confluence, JIRA, Data Security, Relational Databases, Software Debugging, PostgreSQL, MariaDB, Oracle (Applications), Software Engineering, Software Requirements Analysis, Delivery Pipeline, Spring-boot, Backend, AngularJS, Gitlab-ci, Kubernetes, Restful APIs, Docker - **Published:** October 30, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9277124/mid-level-java-software-engineer-220kyr-tssci-fs-poly ## About the Role * Degree: Technical bachelor's degree or equivalent experience * Years of experience: 7+ years * Total Compensation: $220k+ yearly ## Description * Develop, maintain, and modernize mission-critical enterprise data processing software. * Build scalable backend services and APIs using Java, Spring Boot, Oracle, and PostgreSQL. * Deploy containerized applications to Kubernetes environments utilizing Docker, Helm, and GitLab CI/CD. * Provide routine database administration, troubleshooting, and operational support., * Analyze user and system requirements to drive technical design, architecture, and application modernization. * Develop, test, debug, and maintain Java and Angular applications using modern software engineering practices. * Design, develop, and maintain robust RESTful APIs and service integrations. * Optimize relational database interactions, queries, and data access components for MariaDB, Oracle, and PostgreSQL. * Package applications using Docker and deploy containerized services into Kubernetes environments. * Build and manage automated build, test, and deployment workflows using GitLab CI/CD pipelines. * Perform routine database administration, monitoring, troubleshooting, and backup recovery operations. * Collaborate actively in an Agile development environment using Jira and maintain technical documentation in Confluence.