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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Systems Engineer - **Company:** Markon, LLC. - **Location:** Columbia, MD, United States - **Experience:** Expert - **Salary:** $225,000.0 - **Contract:** Permanent contract - **Skills:** Agile Methodology, Systems Engineering, Confluence, JIRA, Information Systems, Identity and Access Management, Systems Development Life Cycle, Requirements Management, Scaled Agile Framework, Systems Architecture, Plex, Information Technology, Enterprise Integration - **Published:** August 11, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9085581/sr-systems-engineer ## About the Role * Active TS/SCI W/ Polygraph (Polygraph must be within the last 7 years) * Bachelor's degree in Systems Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or a related discipline from an accredited college or university. * Fifteen (15) years of relevant experience with a Bachelor's Degree, * Demonstrated experience supporting Department of Defense (DoD) and defense contracting environments. * Proven experience applying systems engineering principles to complex systems-of-systems architectures and enterprise-scale programs. * Experience supporting large organizations (200-2,000 personnel) with complex technical, operational, and governance structures. * Expert-level proficiency with Atlassian Confluence and Jira, including dashboard development, workflow automation, requirements management, and enterprise collaboration. * Deep understanding of the Scaled Agile Framework (SAFe), Agile Release Trains (ARTs), and Program Increment (PI) Planning. * Experience developing governance frameworks, technical documentation, SOPs, MFRs, Architectural Decision Records (ADRs), and systems engineering artifacts. * Strong understanding of DoD acquisition policies, systems engineering lifecycle processes, and the Adaptive Acquisition Framework. * Exceptional written and verbal communication skills with the ability to translate complex technical concepts into executive-level communications and recommendations. * Experience supporting cyber mission programs, enterprise architecture initiatives, or large-scale modernization efforts. * Experience with Mattermost and Confluence Preferred Qualifications: * SAFe Certification or formal SAFe training. * CISSP certification preferred, but not required. ## Description PLEX Solutions, A Part of Markon is looking for a Senior Systems Engineer to provides strategic systems engineering, technical governance, and enterprise integration support. This highly visible SETA position serves as a trusted advisor to leadership, supporting architecture development, systems engineering governance, Agile execution, and cross-functional coordination across several programs. The role requires a blend of technical expertise, strategic thinking, process discipline, and exceptional communication skills to support complex systems-of-systems development within a DoD environment. Responsibilities * Collaborate with the Chief Architect, Technical Development Advisory (TDA), Operational Value Stream Leads (OVSLs), and engineering teams to develop and mature the customers Systems Engineering documentation and the Next-generation Reference Design (JNeRD). * Develop, review, and implement governance artifacts, including Charters, Memorandums for the Record (MFRs), Standard Operating Procedures (SOPs), Systems Engineering Plans, and other technical guidance documents. * Establish and manage Architectural Decision Record (ADR) and Technical Need (TN) processes to ensure architecturally significant decisions are documented, reviewed, approved, and aligned with the enterprise architecture strategy and "North Star" vision. * Assist in evaluating and implementing enterprise capabilities, including customer Identity, Credential, and Access Management initiatives. * Maintain situational awareness of Department of Defense (DoD) policies, standards, and requirements impacting systems engineering and development activities. * Analyze technical policies, procedures, architectures, and program performance and provide recommendations and courses of action to leadership and development teams. ## 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) - [One Pipeline, Three Regulator - SBOM Compliance for the Developer](https://www.wearedevelopers.com/videos/100169-one-pipeline-three-regulator-sbom-compliance-for-the-developer) - [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) - [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) - [Collaboration Quantified: Lessons from Open Source Developer Networks](https://www.wearedevelopers.com/videos/1422-collaboration-quantified-lessons-from-open-source-developer-networks) - [Maturity assessment for technicians or how I learned to love OWASP SAMM](https://www.wearedevelopers.com/videos/351-maturity-assessment-for-technicians-or-how-i-learned-to-love-owasp-samm) ## Related Articles - [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) - [Everything a Developer Needs to Know About MCP with Neo4j](https://www.wearedevelopers.com/magazine/604-everything-a-developer-needs-to-know-about-mcp-with-neo4j) - [Events like RSAC Get You CISOs. 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