Software Developer with Security Clearance

Software Developer About IntelliSys Solutions Group IntelliSys Solutions Group (ISG) is an engineering and project management consulting firm supporting the U.S. Navy and other Department of Defense organizations. Our multidisciplinary team develops, integrates, and supports complex software and control systems that directly contribute to fleet readiness and mission success. We are seeking a Software Developer with approximately 3-5 years of professional experience to join our engineering team supporting Naval Surface Warfare programs. This position is ideal for someone who enjoys working beyond traditional software development by combining programming with hardware integration, laboratory testing, system troubleshooting, and occasional travel to support shipboard installations. Unlike many development roles, this position focuses less on building new applications from scratch and more on understanding complex existing software, implementing enhancements, optimizing system performance, supporting testing efforts, and helping resolve real-world operational issues. Responsibilities The successful candidate will: Develop, modify, and optimize Java-based software supporting Navy control systems.

Analyze existing software architecture and implement enhancements, bug fixes, and performance improvements.

Support integration and testing activities within hardware-in-the-loop laboratory environments.

Assist with troubleshooting software and system-level issues during laboratory testing and fleet support activities.

Participate in shipboard installation, testing, and commissioning efforts as required.

Support software validation, regression testing, and system verification activities.

Contribute to the development of internal test tools, automation utilities, and engineering support applications.

Collaborate closely with software developers, systems engineers, electrical engineers, and government stakeholders.

Investigate software defects, identify root causes, and implement effective corrective actions.

Participate in peer code reviews and maintain high standards for software quality and documentation.

Assist with technical documentation supporting software releases and testing activities.

Required Qualifications Bachelor's degree in Computer Science, Software Engineering, Computer Engineering, or related technical discipline.

Approximately 3-5 years of professional software development experience.

Experience developing software using Java.

Familiarity with Linux operating systems and command-line environments.

Strong understanding of object-oriented programming principles.

Experience troubleshooting and debugging complex software systems.

Familiarity with version control systems such as Git.

Ability to read, understand, and modify existing code bases.

Strong analytical and problem-solving skills.

Ability to work independently while collaborating effectively within a multidisciplinary engineering team.

Willingness to travel periodically in support of shipboard installations, testing, and customer support.

Preferred Qualifications Experience with any of the following is highly desirable: Allen-Bradley/Rockwell PLCs

Industrial automation or control systems

Hardware-in-the-loop (HIL) testing

Test automation development

Windows desktop application development

Experience administering or supporting Red Hat Enterprise Linux (RHEL) systems.

Familiarity with Linux system administration, shell scripting, and software deployment.

Experience configuring Linux services, user management, networking, and system troubleshooting.

Experience with virtualization technologies such as VMware or Hyper-V.

Experience with scripting languages such as Bash or PowerShell.

SQL databases

Network communications and industrial protocols

Military or maritime systems

Experience supporting software deployments in operational environments

Active DoD Secret Clearance

What You'll Work On Our engineers support software that interfaces with real-world industrial equipment used aboard U.S. Navy ships. This role offers opportunities to: Work in engineering laboratories with integrated hardware and software systems.

Support shipboard testing and installations.

Investigate challenging software and system integration issues.

Improve existing applications through optimization and modernization.

Develop utilities and automated test tools that improve engineering efficiency.

Collaborate with experienced engineers across software, electrical, mechanical, and systems engineering disciplines.

No two weeks are exactly alike—one week you may be debugging software in the lab, another enhancing Java applications, and another supporting testing aboard a Navy vessel. IntelliSys Solutions is committed to increasing employment opportunities in historically underutilized areas (HUB Zones) and we give preference to applicants who reside in those certified areas. Interested candidates can check to see if their 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. Salary Range: $85,000 - $120,000 (commensurate with experience) Location: On-Site (Philadelphia, PA) Security Clearance: Ability to obtain and maintain a DoD Secret Clearance (existing clearance preferred) Work Schedule: 8-hour day