Java Software Developer – Control Systems (Defense)

Java Software Developer – Control Systems (Defense) IntelliSys Solutions Group is seeking a Java Software Developer to support the development, integration, and sustainment of the Platform Independent Machinery Control System (PIMCS) for U.S. Navy surface ship platforms. This role is focused on Java-based software development supporting machinery control, monitoring, alarm management, and system integration within complex HM&E environments.The ideal candidate has 3+ years of professional Java development experience and is comfortable working in engineering-centric environments where software directly supports real-world machinery plant operations. The position spans the full software lifecycle—from requirements definition through deployment and sustainment—while adhering to DoD and NAVSEA engineering standards. You will collaborate closely with systems, mechanical, and electrical engineers to implement reliable, maintainable software that supports operational shipboard control systems. Key Responsibilities Design, develop, and maintain Java-based PIMCS software modules, including: Alarm management and event handling Machinery data acquisition and processing System status monitoring and health reporting I/O abstraction and interface layers Data logging, trending, and historian functions Implement and maintain networked and distributed Java applications, including socket-based communication and protocol-driven data exchange. Develop software in accordance with Naval Combatant Design Specifications (NCDS), Design Practice Criteria (DPC), and applicable NAVSEA guidance (on-the-job training and mentorship provided). Support software integration with machinery control subsystems, plant equipment interfaces, and control system test environments. Develop and maintain software requirements, design documentation, test procedures, and configuration artifacts. Participate in Agile/Scrum development cycles, including sprint planning, backlog refinement, and iterative software delivery. Debug, troubleshoot, and optimize Java applications to ensure performance, stability, and reliability in lab and shipboard environments. Provide lifecycle sustainment support following the NSWCPD Systems Engineering Process (SEP) and applicable CMMI / IEEE standards. Collaborate with cross-functional teams (systems, mechanical, electrical, test, and program management) to ensure alignment with PIMCS technical objectives. Required Qualifications 3+ years of professional Java development experience (candidates with more experience are also encouraged to apply). Strong understanding of object-oriented design, Java application architecture, and modular software development. Experience developing networked applications, including TCP/IP, UDP, REST, or other socket-based communication. Familiarity with software configuration management and version control tools (Git, SVN, or equivalent). Experience producing and maintaining technical software documentation (requirements, design descriptions, test plans, or similar). Working knowledge of secure coding practices and interest in DoD cybersecurity considerations. Bachelor’s degree in Computer Engineering, Software Engineering, Electrical Engineering, Computer Science, Mathematics, or a related discipline; or equivalent practical experience. U.S. citizenship and ability to obtain a DoD Secret security clearance (active clearance preferred). Desired (Nice-to-Have) QualificationsYou do not need all of these to be a strong candidate. Experience in any of the following areas is a plus: Experience with machinery control systems, HM&E systems, industrial control software, or other software that interacts with hardware or real-world equipment. Familiarity with PLC integration or PLC simulation in a test or lab environment. Experience supporting control system testing, integration labs, or shipboard/field software deployments. Experience with any of the following: databases, GUI development, Python, unit and integration testing, or Linux. Experience developing or supporting operator interfaces or monitoring dashboards backed by Java services. Exposure to DevOps practices, CI/CD pipelines, or automated testing frameworks. Participation in formal code reviews, design reviews, or technical audits. Knowledge of both Windows and Linux development environments. CompTIA Security+ or similar certification. IntelliSys Solutions is committed to increasing employment opportunities in historically underutilized areas (HUB Zones) and some recruitment efforts may give preference to applicants who reside in those certified areas. Check to see if your address is in the HUBZone at https://maps.certify.sba.gov. We are an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability status, protected veteran status, or any other characteristic protected by law. IntelliSys participates in the E-Verify program as required by law. Learn more about the E-Verify program at https://e-verify.uscis.go Pay: $80,000.00 - $105,000.00 per year Application Question(s): Please visit maps.certify.sba.gov and enter your address. Do you reside in a hubzone? Work Location: In person