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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer Senior_TS/SCI with Polygraph - **Company:** General Dynamics Information Technology - **Location:** Alexandria, VA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Software Applications, Computer Programming, MATLAB, SAP (Applications), Software Engineering, Software Systems, Utility Software, Code Comments, Usage Tracking, Information Technology - **Published:** September 9, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9150571/software-engineer-senior-tssci-with-polygraph ## About the Role Bring your engineering expertise along with a drive for innovation to GDIT. The Software Engineer Senior must have: * Education: Bachelor of Arts/Bachelor of Science * Experience: 5+ years of related experience * Technical skills: * Must have experience with Intelligence Community customer * Must have experience working with mid and senior level government * Must have experience supporting classified government networks * Certifications in networks highly desired * Security clearance level: TS/SCI with Polygraph Specific SAP accesses required (or highly preferred or ability to obtain them), * Must have experience supporting classified government mission IT systems * Must have experience with satellite orbital planning and operations tools including Satellite Toolkit * Must have experience with analytic modeling tools including MATLAB * US Citizenship required * Location: On Customer Site ## Description As a Software Engineer Senior, the work you'll do at GDIT will be impactful to the mission of our customer. * Writes scripts, implements, patches, develops code fixes and solutions to support mission-critical flight safety systems. Installs and updates software systems. * Administers software on workstations across multiple classified workstations and networks. * Monitors, creates, tracks, manages, resolves, and closes DIP tickets including incidents, problems and RITMs for software applications. * Works with vendors to resolve Tier 4 software issues. * Administers and coordinates software IT system improvements and/or enhancements. * Monitors software systems utilizing industry leading processes, technologies, and tools. * Provides timely resolution to software DIP tickets using processes, procedures, knowledge articles, and troubleshooting skills. * Works and coordinates with others to accomplish mission goals for critical software on mission IT systems. * Plans implementation of enhancements to mission IT systems software. * Designs, develops, troubleshoots, and analyzes advanced software programs, scripts, and patches for computer-based mission critical systems * Develops advanced documentation, flowcharts, layouts, diagrams, charts, code comments, and clear code * Prepares and installs solutions by determining and designing system specifications, standards, and programming * Performs advanced mission-specific systems modeling, simulation, and analysis. * Designs and develop basic compilers, assemblers, utility programs and operating systems * Develops software solutions by studying information needs; conferring with users; studying systems flow, data usage, and work processes; investigating problem areas; and following the software development lifecycle * Develops documentation of new or existing programs * Applies practical knowledge of job typically obtained through advanced education and work experience * Participates in special projects as required. ## Related Videos - [Metrics Handle with Care: The Paradox of Measuring Team Performance](https://www.wearedevelopers.com/videos/1131-metrics-handle-with-care-the-paradox-of-measuring-team-performance) - [Programming with Contracts in C++26](https://www.wearedevelopers.com/videos/100056-programming-with-contracts-in-c-26) - [Leveraging Large Language Models for Legacy Code Translation: Challenges and Solutions](https://www.wearedevelopers.com/videos/1157-leveraging-large-language-models-for-legacy-code-translation-challenges-and-solutions) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [How to Survive with Dyslexia as a Developer](https://www.wearedevelopers.com/videos/1845-how-to-survive-with-dyslexia-as-a-developer) - [From Black Box to Glass Box : Bedrock AgentCore Observability](https://www.wearedevelopers.com/videos/2126-from-black-box-to-glass-box-bedrock-agentcore-observability) ## Related Articles - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [Best Countries for Software Engineers](https://www.wearedevelopers.com/magazine/267-best-countries-for-software-engineers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)