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In office (Chantilly)

Confirmed on the employer's own hiring board on Nov 12, 2026. First seen by Alion on Nov 11, 2026. XMSTART scores B on the Alion truth index.

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XMSTART is an employee-owned professional services and defense contracting firm specializing in systems engineering, data analytics, IT management, and mission-critical support. Headquartered in Fairfax, Virginia, the company delivers specialized technical and program management expertise to various national security and defense agencies. Through a multidisciplinary team of engineers and technical professionals, the enterprise provides strategic consulting, acquisition support, and complex technical solutions for government operations.

XMSTART is looking to add experienced and strategic full-time Agile Systems Engineers to our teams in Chantilly, VA and Aurora, CO. These positions are 100% onsite.

The Agile Systems Engineer applies systems engineering principles in an Agile environment to support iterative delivery of mission capabilities. Helps translate mission needs into requirements, user stories, and technical tasks; supports backlog refinement, sprint/release planning, and technical coordination; and works with teams to improve communication, integration, and delivery. Assists with baseline documentation, metrics, and continuous improvement to support rapid adaptation to changing requirements.

Responsibilities may include but are not limited to:

  • Supporting the decomposition of mission needs into requirements, user stories, and acceptance criteria
  • Assisting with backlog refinement, sprint planning, and release planning
  • Coordinating technical dependencies and interfaces across teams
  • Supporting integration, testing, and iterative deployment of capabilities
  • Maintaining engineering documentation and baseline artifacts in an Agile environment
  • Gathering and analyzing Agile and engineering metrics to improve delivery and integration

Requirements

  • An active TS/SCI with Poly
  • Junior - 0 to 5 years of Experience, Intermediate - 5 to 10 years of Experience, Senior - 10+ years of experience
  • Experience in systems engineering or related technical work area in an Agile environment
  • Understanding of Agile methods and iterative development practices
  • Ability to work collaboratively across technical and non-technical teams
  • Familiarity with requirements management, integration, and testing
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