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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Full Stack Software Engineer (TS/SCI with CI poly) - **Company:** Vantor Inc. - **Location:** Herndon, VA, United States - **Experience:** Expert - **Salary:** $200,000.0 - $270,000.0 - **Contract:** Permanent contract - **Skills:** Unity 3d, C (Programming Language), Java (Programming Language), JavaScript (Programming Language), 3D Computer Graphics Software, 3D Rendering, Microsoft Windows, Agile Methodology, Amazon Web Services, Android Software Development, Apple IOS, Application Performance Management, ArcGIS (Software), Automation of Tests, Big Data, C++ (Programming Language), Mobile Application Development, Cloud Computing, Configuration Management, Code Review, Databases, Continuous Integration, DevOps, Distributed Computing Environment, Distributed Systems, Django Web Framework, Game Engine, Geospatial Intelligence, GeoServer, GIS Applications, Apache Hadoop, Python (Programming Language), PostgreSQL, MySQL, Multiprocessing, Node.Js, Object-Oriented Software Development, OpenGL, PostGIS, Scrum Methodology, Quantum GIS (QGIS), SQLite, Systems Architecture, Vagrant, VirtualBox, Virtualization Technology, Web Application Frameworks, WebGL, Multithreading, High Performance Computing, ReactJS, Apache Spark, Backend, Data Layers, AngularJS, Cassandra, Front End Software Development, Software Version Control, Service Stack, Jenkins, Vmware, Microservices - **Published:** October 22, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9256918/principal-full-stack-software-engineer-tssci-with-ci-poly ## About the Role * Must be a U.S. Citizen with an active TS/SCI with CI poly (or willingness to obtain a CI poly). * 10+ years of full stack software development experience. * Experience with geospatial applications, including Motion GEOINT data, concepts, and systems. * Strong proficiency in one or more programming languages such as C, C++, Java, Python, or JavaScript. * Experience with modern development practices, including version control, automated testing, and CI/CD. * Solid understanding of object-oriented design principles and distributed systems. * Ability to collaborate effectively within a team and communicate technical concepts clearly., * Expertise in modern frameworks and technologies such as React, Angular, Node.js, Django, or Spring. * Experience with 3D graphics, visualization, or game engine technologies (e.g., OpenGL, WebGL, Unity, CesiumJS). * Strong background in geospatial tools and platforms (e.g., PostGIS, GeoServer, ArcGIS, QGIS, Leaflet, Mapbox). * Experience with big data and distributed processing frameworks (e.g., Hadoop, Spark, GeoWave). * Familiarity with DevOps tools and practices (e.g., Jenkins, Chef, Vagrant, automated configuration management). * Experience with cloud and virtualization technologies (e.g., AWS, VMware, VirtualBox). * Proficiency with databases such as PostgreSQL, MySQL, Cassandra, or SQLite. * Experience with multithreading, multiprocessing, and high-performance computing. * Knowledge of mobile development platforms (Android, iOS, Windows). * Strong UI/UX development experience with a focus on usability and performance. * Demonstrated ability to quickly learn new technologies and adapt in a fast-paced environment. * Self-motivated, results-oriented mindset with the ability to work independently. #cjpost #LI-RD #LI-Onsite Pay Transparency: In support of pay transparency at Vantor, we disclose salary ranges on all U.S. job postings. The successful candidate's starting pay will fall within the salary range provided below and is determined based on job-related factors, including, but not limited to, the experience, qualifications, knowledge, skills, geographic work location, and market conditions. Candidates with the minimum necessary experience, qualifications, knowledge, and skillsets for the position should not expect to receive the upper end of the pay range. ## Description We are seeking an experienced Senior Full Stack Engineer to develop and enhance advanced geospatial and Motion GEOINT applications. This role involves building scalable, high-performance solutions across the full technology stack, including interactive visualization and 3D capabilities. You will work within an Agile team to deliver mission-critical features, improve system architecture, and optimize performance across distributed systems. The position requires strong object-oriented design skills, a performance-focused mindset, and the ability to quickly contribute to complex environments. The ideal candidate is a self-driven engineer who collaborates effectively and thrives in fast-paced, technically challenging settings., * Design, develop, and maintain full stack applications supporting geospatial and Motion GEOINT systems. * Build scalable, high-performance software across front-end, back-end, and data layers. * Develop interactive visualization and 3D rendering capabilities for GIS and simulation-based applications. * Collaborate with cross-functional teams to deliver mission-critical features and enhancements. * Contribute to system architecture, object-oriented design, and microservices-based solutions. * Optimize application performance, scalability, and reliability across distributed systems. * Implement and support CI/CD pipelines, automated testing, and configuration management. * Participate in Agile development processes, including sprint planning, standups, and code reviews. * Troubleshoot and resolve complex technical issues across multiple environments and technology stacks.