> Markdown version of [/jobs/ext/3539257-mid-level-java-software-engineer-316k-yr-ts-sci-fs-poly](https://www.wearedevelopers.com/jobs/ext/3539257-mid-level-java-software-engineer-316k-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 [$316k/yr+] TS/SCI-FS Poly - **Company:** SYSTOLIC, INC. - **Location:** Herndon, VA, United States - **Experience:** Experienced - **Salary:** $316,000.0 - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Android Software Development, Bash Shell, DevOps, Apache HBase, Python (Programming Language), PostgreSQL, Linux System Administration, MongoDB, MySQL, NoSQL, Public Key Infrastructure, SQL Databases, Web Applications, Software Repository, Data Processing, Transport Layer Security, Software Security, Kotlin, Apache Nifi, Restful APIs, Data Pipelines, Jenkins, Vulnerability Analysis - **Published:** September 30, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9204636/mid-level-java-software-engineer-316kyr-tssci-fs-poly ## About the Role * Degree: Technical bachelor's degree or equivalent experience * Years of experience: 13+ years * Total Compensation: $316k+ yearly (tentative) ## Description * Maintain and enhance a service-based web application and data exploitation platform. * Develop API interactions using Python, Java, and Android tools such as Kotlin. * Administer Linux environments utilizing Bash scripting and support RESTful web services. * Design SQL and NoSQL databases, construct CI/CD pipelines, and process data streams., * Collaborate with product owners and program managers to deliver user stories that meet mission requirements. * Coordinate with cross-functional teams and partners to ensure tools align with operational needs. * Apply DevOps principles to continuously deliver high-value software enhancements in a service-based architecture. * Conduct vulnerability assessments and remediate application security issues to maintain accreditation. * Maintain source code within Git repositories and implement automated CI/CD pipelines using Jenkins. * Design, develop, and administer SQL and NoSQL databases including PostgreSQL, MySQL, MongoDB, and HBase. * Build and integrate RESTful APIs, manage SSL/PKI certificates, and configure data pipelines using Apache NiFi.