> Markdown version of [/jobs/ext/4634341-senior-software-engineer-national-security-ts-sci](https://www.wearedevelopers.com/jobs/ext/4634341-senior-software-engineer-national-security-ts-sci). 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). --- # Senior Software Engineer, National Security (TS/SCI) - **Company:** KBR Inc - **Location:** Vienna, WI, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Amazon Web Services, Linux - **Published:** November 8, 2026 - **Apply:** https://www.juju.com/job/28_25197_9f452529184e2ee18051fb0e09e56fdd ## About the Role KBR Careers is seeking a Software Engineer to design, develop, test, deploy, and maintain secure software applications. This role requires a Master's degree, 12+ years of experience, active TS/SCI clearance with polygraph, and hands-on work across Windows, Linux, and AWS environments.