Full-time

Senior Systems Engineer / Infrastructure Engineer (Lead)

Posted by Marathon TS • Arlington, Virginia, United States

📍 Arlington, Virginia 🕒 February 26, 2026

About the Role


Description:

Marathon TS is seeking a Senior Systems Engineer / Infrastructure Engineer (Lead) to support a major DoD Joint Program Office IT Support Services program. This role provides senior-level technical leadership across enterprise infrastructure, systems engineering, and network services supporting a globally distributed, mission-critical defense environment.

The engineer will be responsible for planning, integrating, maintaining, and securing complex IT systems across hardware, software, and network domains. This position supports full lifecycle operations including design, implementation, sustainment, modernization, and cybersecurity compliance in accordance with DoD standards.

Primary Responsibilities:

  • Integrate, plan, coordinate, and facilitate enterprise information system activities




  • Lead hardware and software upgrades, system design, and network development initiatives



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