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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Systems & Integration Engineer (SE&I) - **Company:** Steven Douglas Associates, Inc. - **Location:** Sterling, VA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Systems Engineering, Confluence, JIRA - **Published:** June 4, 2026 - **Apply:** https://www.clearancejobs.com/jobs/8955331/principal-systems-integration-engineer-sei ## About the Role * Bachelor's degree in Science, Technology, Engineering, or Mathematics (STEM preferred) * Minimum 8 years of prior engineering experience, or equivalent combination of education and experience Technical & Domain Skills * Demonstrated KSAs in Mission Protection, Mission Resiliency, Customer Operations, Tasking, and/or Collections * Experience with project management principles and practices * RFC (Request for Change) impact review and assessment experience * Enterprise-level planning and implementation experience * Systems installation, integration, and test (SI&T) experience Collaboration & Environment * Demonstrated ability to work collaboratively in mixed-team environments including Government, Military, SETA, and Contractor personnel * Comfortable operating in a SCIF environment with classified information handling requirements Clearance * Active and transferable TS/SCI with Counterintelligence (CI) Polygraph - must be in place prior to start date * U.S. citizenship required; only U.S. citizens are eligible for the required clearance level DESIRED QUALIFICATIONS * Familiarity with customer NSIS processes and/or rapid delivery methods * Established relationships within the IC customer community * Experience working across contract vehicles and geographic/SCIF locations * Proficiency with Atlassian JIRA and Confluence for project tracking and documentation ## Description We are seeking a Principal Systems & Integration Engineer (SE&I) to provide enterprise-wide systems engineering and integration support to an operational government customer within the Intelligence Community. This is a senior individual contributor role that manages moderately sized projects with minimal oversight and delivers measurable contributions to new products, processes, and operational standards. This position is based in a SCIF environment in Sterling, VA facility (near Dulles Airport) and offers flexible work hours to support work/life balance., * Lead project management and project leadership tasks in collaboration with government, military, SETA, and contractor teams across multiple customer organizations. * Apply Mission Protection knowledge, skills, and abilities (KSAs) to assigned projects, enterprise-level initiatives, and other entities as directed by the customer. * Serve as a senior advisor on mission resiliency topics, capabilities, and best practices. * Analyze complex, fluctuating problems requiring detailed information gathering, root cause analysis, and investigation to determine appropriate resolutions. * Lead mission interactions and provide end-to-end support across multiple concurrent missions, including the initialization and stand-up of new missions., * Enterprise-wide scope - high visibility work with direct impact on operational missions * Flexible work hours - rare for a fully SCIF-based position * Long-term program stability supporting an established IC operational customer * Senior individual contributor track with opportunities to mentor junior engineers and lead cross-team initiatives ## Related Videos - [Improving quality with Agentic AI with Rovo Dev and Xray](https://www.wearedevelopers.com/videos/2005-improving-quality-with-agentic-ai-with-rovo-dev-and-xray) - [Model Based Systems Engineering in an Agile Product Development Process](https://www.wearedevelopers.com/videos/68-model-based-systems-engineering-in-an-agile-product-development-process) - [42 x 2 Canvases Later: Two Years, Two Minds, Many Lessons](https://www.wearedevelopers.com/videos/1458-42-x-2-canvases-later-two-years-two-minds-many-lessons) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Designing UX for SRE Agents in High-Stakes Incidents](https://www.wearedevelopers.com/videos/100003-designing-ux-for-sre-agents-in-high-stakes-incidents) - [A Founder's Journey : From Startup Chaos to Purposeful Growth](https://www.wearedevelopers.com/videos/1926-a-founder-s-journey-from-startup-chaos-to-purposeful-growth) ## Related Articles - [Events like RSAC Get You CISOs. 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