> Markdown version of [/jobs/ext/3040515-software-developer-senior](https://www.wearedevelopers.com/jobs/ext/3040515-software-developer-senior). 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 Developer (Senior) - **Company:** S O S I Inc - **Location:** Chantilly, VA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Clean Code Principles, Open Source Technology, Software Engineering, Software Systems - **Published:** September 23, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9188160/software-developer-senior ## About the Role * Active in scope TS/SCI w/ Poly. * Minimum 7+ years of relevant experience. * Understanding of the Sponsor's technical environment. * Experience in full lifecycle software engineering. * Experience moving capabilities from development through testing to production environments. ## Description * Lead design and development of complex software solutions writing clean, efficient code. * Mentor junior developers. * Conduct architectural reviews. * Integrate COTS, GOTS, and Open-Source components. * Drive continuous improvement in development processes. ## Related Videos - [Rethinking Intelligence: AI, Accessibility, and the Future of Inclusive Work - Artur Ortega](https://www.wearedevelopers.com/videos/1377-rethinking-intelligence-ai-accessibility-and-the-future-of-inclusive-work-artur-ortega) - [The Avengers Initiative (Practical Ethics for Software Engineers)](https://www.wearedevelopers.com/videos/2070-the-avengers-initiative-practical-ethics-for-software-engineers) - [Building software that scales with Typescript](https://www.wearedevelopers.com/videos/415-building-software-that-scales-with-typescript) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Building Systems that Last](https://www.wearedevelopers.com/videos/1389-building-systems-that-last) - [DevSecOps culture](https://www.wearedevelopers.com/videos/783-devsecops-culture) ## Related Articles - [7 Important Tips That Every Software Developer Should Know](https://www.wearedevelopers.com/magazine/101-7-important-tips-that-every-software-developer-should-know) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [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) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers)