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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Developer Principal (Security Clearance Needed) - **Company:** GCI, Inc. - **Location:** Chantilly, VA, United States - **Experience:** Expert - **Salary:** $124,093.0 - $207,251.0 - **Contract:** Permanent contract - **Skills:** C (Programming Language), Microsoft Word, Java (Programming Language), JavaScript (Programming Language), Microsoft Excel, JIRA, Automation of Tests, C++ (Programming Language), Nvidia CUDA, Computer Programming, Computer Engineering, Continuous Integration, Linux, Field-Programmable Gate Array (FPGA), Hardware Design, Issue Tracking Systems, Python (Programming Language), Microsoft Office, Redmine, Software Tools, Shell Script, Software Engineering, Software Systems, Subversion, Trello, VHSIC Hardware Description Language (VHDL), Data Processing, Scripting, Cloud Platform System, Git, Information Technology, Wireless Technologies, Software Version Control - **Published:** July 7, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9014362/software-developer-principal-security-clearance-needed ## About the Role The Software Developer Principal will lead the design and development of complex software systems and make significant enhancements to existing software. The ideal candidate is a hands-on developer with significant experience in developing scalable platforms, with experience in leading software development activities, systems that process data and messaging, hardware implementation, creating documentation and guides, and organizing and managing operations and maintenance actions. The candidate must have strong, firsthand technical expertise in a variety of system technologies and the proven ability to fashion robust scalable solutions that can manage critical communication systems. The candidate is a leader and provides supervision to more junior employees. REQUIRED QUALIFICATION: * Demonstrated experience programming with C, C++, and Python. * Experience with Linux operating system details and shell scripting. * Experience with Microsoft Windows environments. * Experience with Java, JavaScript and/or other scripting skills. * Analytical mindset and good problem-solving skills. * Excellent written and verbal communication and attention to detail. * Implement and design test plans at system level. * Ability to communicate effectively orally and in writing. * Strong experience with Microsoft Office (Word, Excel..). * Security + certification or ability to acquire., * Bachelor's Degree in Computer Science, Electrical or Computer Engineering or a related technical discipline, or the equivalent combination of education, technical training, or work/military experience. * 5 to 15 years of related software engineering experience., * Master's Degree in Computer Science. * Background and experience with FPGA programming. * Digital Signals Processing knowledge or experience. * Version Control Software (e.g. SVN, Git). * Issue Tracking Software (e.g. JIRA, Redmine, Trello). * Knowledge of wireless technology, digital/analog communications, or RF. * Experience with Test Automation and Continuous Integration. Travel GCI's systems are distributed regionally throughout the contagious United States (CONUS), and require quarterly updates to software systems, and occasionally hardware, as well. The successful candidate is able to travel at least four times a year to CONUS sites for two (2) to four (4) days to perform the scheduled maintenance. *A candidate must be a US Citizen and requires the ability to achieve and maintain an active/current TS/SCI with Polygraph clearance. GCI will work with the candidate to transfer their clearance, or sponsor them for a Secret, followed by a Top Secret clearance. ## Description At GCI, we solve hard problems. GCI's engineering team has a passion for designing and building modern systems that exceed our customers' expectations. Our engineers are immersed in software tools and environments to include LINUX, Java, DSP in C, C++, Python, VHDL and Xilinx FPGA tools, NVidia CUDA acceleration, and more. Our team is versatile and gets to engage in all parts of the development process. ## Related Videos - [You’re a great coder? 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