> Markdown version of [/jobs/ext/4515452-software-system-engineer-iii](https://www.wearedevelopers.com/jobs/ext/4515452-software-system-engineer-iii). 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 System Engineer III - **Company:** VTG LLC - **Location:** Chantilly, VA, United States - **Experience:** Expert - **Salary:** $100,000 - $215,000 - **Contract:** Permanent contract - **Skills:** Agile Methodology, Software Architecture, Software Systems, Cloud Platform System, Technical Debt, Devsecops - **Published:** November 1, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9282197/software-system-engineer-iii ## About the Role * Bachelor's degree required; Master's preferred * 10+ years of experience supporting software-intensive systems or enterprise platforms * Deep understanding of modern software architectures and development lifecycles * Proven experience providing technical oversight and advisory support (non-developer role) * Strong leadership, stakeholder engagement, and briefing skills * Preferred Qualifications: Experience supporting IC, DoD, or DOJ mission-critical programs, Experience advising on large-scale or multi-vendor software programs, Familiarity with Agile at scale (SAFe), DevSecOps, and cloud-based architectures ## Description * Provide senior-level advisory support on software architecture, design, and lifecycle strategy * Lead government reviews of contractor software approaches, roadmaps, and deliverables * Advise program leadership on software risks, technical debt, scalability, and sustainability * Support development of software governance frameworks, standards, and evaluation criteria * Participate in senior technical reviews, milestone events, and executive briefings * Assess alignment of software solutions with mission objectives and enterprise architecture * Mentor junior and mid-level software experts * Support acquisition and source selection activities with technical expertise, as required