Java Full Stack Developer Intern Jobs in Indiana, PA

Precise Systems delivers integrated, mission-ready solutions that advance warfighter readiness and strengthen our nation’s most critical defense programs. Through the power of our combined capabilities, we provide deep expertise in Advanced Engineering; Digital Transformation; Electromagnetic Warfare; Interactive Training & Simulation; Physical Sciences Research; Platform Lifecycle Support; and Foreign Military Sales. Unified by decades of trusted performance and expanded through strategic growth, our team applies innovative technologies, engineering rigor, and customer-focused execution to solve complex challenges and accelerate mission success. Guided by our commitment to partnership, precision, and performance, we deliver the scalable solutions and technical excellence our customers depend on—today and into the future.

We are seeking a Software Developer / Engineer to support our customer in Crane, Indiana. This role supports the design, development, integration, testing, and sustainment of software, firmware, and related digital capabilities for Electronic Warfare systems, tactical information systems, test infrastructure, and training environments. The position is aligned to the SOW’s software engineering requirements across the full lifecycle, including initial design, development, upgrade of fielded systems, replacement efforts, lab support, and field test support. The successful candidate will contribute to software architecture, coding, integration, debugging, automated and manual testing, requirements traceability, documentation, and cybersecurity-conscious implementation for mission systems supporting Expeditionary EW efforts. This role is well suited for an engineer who can work across software development, system integration, and test activities in a secure, mission-focused environment.

This role requires in-person support.

• Design, develop, modify, integrate, test, and maintain computer software and firmware supporting Electronic Warfare systems, tactical information systems, test facilities, and training environments.
• Support software efforts across the lifecycle, including initial system design, new development, upgrades to fielded systems, and replacement of existing capabilities.
• Plan, design, code, test, integrate, and deliver algorithms, models, software source code, executables, and computer programs in support of customer requirements.
• Analyze system-level requirements to ensure that test definitions, objectives, plans, and acceptance criteria are sufficient to validate system requirements and operational needs.
• Perform and support requirements development, validation, traceability analysis, risk assessment, and mitigation planning for software upgrades and development efforts.
• Support software testing activities including unit testing, software integration testing, system-level testing, regression analysis, and independent verification and validation (IV&V).
• Perform traceability analysis between requirements, test designs, cases, procedures, and execution results and document discrepancies in accordance with approved plans.
• Participate in code reviews, user acceptance testing, and development of automated software test results and documentation.
• Utilize Government-accessible source code repositories based on git and support disciplined software configuration management practices.
• Support software maintenance activities to correct faults, improve performance, address vulnerabilities, and adapt software to modified operating environments.
• Contribute to software architecture, quality assurance, requirement documentation, cloud-service support, and integration of software into larger mission systems and networks.
• Support work in both lab and field test environments, including Government-led testing and troubleshooting of integrated systems.
• Prepare technical reports, software documentation, and related engineering artifacts required to support development, testing, and sustainment.

• Bachelor’s degree in Computer Science, Computer Engineering, Software Engineering, Electrical Engineering, or a related technical discipline.

• 3+ years of professional experience in software development, software engineering, computer science, or closely related work.
• Experience designing, coding, integrating, testing, and maintaining software in a structured engineering environment.
• Proficiency in one or more modern programming languages such as Python, C, C++, Java, or similar.
• Experience with software testing, including unit testing, integration testing, and system-level testing.
• Experience with requirements analysis, traceability, and technical documentation.
• Familiarity with git-based version control and software configuration management practices.
• Ability to troubleshoot software and integrated system issues in lab or operational test environments.
• Strong written and verbal communication skills and ability to work effectively with software, systems, test, and cybersecurity teams.

• Experience supporting DoD, Navy, Electronic Warfare, tactical information systems, or mission-system software.
• Experience with automated test frameworks, IV&V, regression testing, and requirements/test traceability tools.
• Familiarity with software architecture, cloud services, MBSE-adjacent development environments, or networked mission systems.
• Experience with cybersecurity best practices, secure software development, or remediation of software vulnerabilities in operational systems.
• Experience supporting Government-led testing, lab demonstrations, field testing, or training systems.
• Familiarity with software support activities such as SSA planning, software optimization, lifecycle metrics, and software configuration planning.

Must be able to obtain and maintain a Secret security clearance. Due to the sensitivity of customer related requirements, U.S. Citizenship is required.

Precise Systems is dedicated to a shared vision and core values of Integrity, Respect, and Responsibility, which foster innovation and drive our continued success in the global marketplace. Precise Systems and its subsidiaries are Equal Opportunity /Affirmative Action Employers. All qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, protected veteran status, status as an individual with a disability, or any legally protected status under federal, state, or local law. Precise Systems participates in E-Verify.