> Markdown version of [/jobs/ext/3622431-software-engineer-ts-sci-with-full-scope-polygraph](https://www.wearedevelopers.com/jobs/ext/3622431-software-engineer-ts-sci-with-full-scope-polygraph). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer - TS/SCI with Full Scope Polygraph - **Company:** Stealth Startup - **Location:** Fairfax Station, VA, United States - **Salary:** $125,000.0 - $250,000.0 - **Contract:** Permanent contract - **Skills:** HTML, Java (Programming Language), JavaScript (Programming Language), C Sharp (Programming Language), C++ (Programming Language), Cascading Style Sheets (CSS), Computer Engineering, Relational Databases, Microsoft Visual Studio, Microsoft SQL Server, MySQL, Oracle (Applications), Software Maintenance, Software Engineering, Software Systems, Scripting, AngularJS, Web Technologies, Programming Languages - **Published:** October 8, 2026 - **Apply:** https://www.disabledperson.com/jobs/75897317-software-engineer-ts-sci-with-full-scope-polygraph ## About the Role * Current or recent TS/SCI security clearance with Full Scope Polygraph (FS Poly) * Must be crossover eligible * Previous experience in software development, computer engineering, or a related technical field * Willingness to develop and work with C#, JavaScript, HTML, and Angular * Ability to work on-site in Chantilly, VA Preferred Qualifications * Experience with C#, Java, C++, or other programming languages * Knowledge of JavaScript, HTML, CSS, Angular, and/or related scripting frameworks * Familiarity with relational databases such as MySQL, Oracle, or SQL Server * Experience with Microsoft Visual Studio * Strong attention to detail and problem-solving skills ## Description We are seeking a Software Engineer to support mission-critical software development initiatives in a highly secure environment. The ideal candidate will have prior software development or computer engineering experience and be comfortable working with modern Microsoft and web-based technologies., * Analyze user requirements and develop effective software solutions * Collaborate with project managers and product owners to understand and meet technical specifications * Recommend software upgrades and improvements to enhance operational efficiency * Work closely with other developers to design, develop, and optimize software * Document programming tasks, processes, and procedures * Troubleshoot and resolve software issues and bugs * Perform routine software maintenance and enhancements