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Marathon TS · 2 weeks ago

Senior Systems Engineer / Infrastructure Engineer (Lead)

Arlington, VA

Full-time

Onsite

Senior Level, Lead/Staff

15+ years exp

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 in a mission-critical defense environment, focusing on planning, integrating, maintaining, and securing complex IT systems.

Information ServicesProfessional NetworkingProfessional ServicesTechnical Support

Growth Opportunities

No H1B

Security Clearance Required

U.S. Citizen Only

Responsibilities

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

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

Support maintenance, performance, and security of enterprise networks

Analyze organizational IT requirements (short- and long-term) from operational and strategic perspectives

Ensure system availability, continuity, and information assurance

Recommend and support continuous process improvement initiatives

Perform formal software verification, validation, and automated testing

Implement and maintain security tools and applications (e.g., Websense, ISA, McAfee HBSS)

Administer SQL and Oracle database environments

Develop and debug software in real-time, embedded, and multi-processor environments

Maintain compliance with DoD Information Assurance policies and procedures

Lead small technical teams (≤25 personnel) through solution design, development, integration, and deployment

Qualification

VMware InfrastructureMicrosoft ExchangeActive DirectoryCore network servicesJava developmentLinux operating systemObject-Oriented designCOTS integrationStorage platformsProject planningSoft skillsTechnical documentation

Required

VMware Infrastructure / vSphere

Storage platforms: NetApp, EMC, SAN, NAS, Tape Arrays

Microsoft Exchange & Active Directory (Windows 2003/2008 environments)

Core network services: DNS, DHCP, PKI

Web collaboration platforms (SharePoint, Oracle WebCenter Interaction)

Java development (JDK, Eclipse, LEWIT, Kona)

Linux and Windows operating systems

Object-Oriented software design

COTS integration (Oracle, WebMethods, ClearCase)

MA/MS in Engineering, Computer Science, or related technical discipline OR BA/BS + 6 additional years of experience in lieu of MA/MS

15+ years total experience in a relevant engineering or science field

4+ years in project planning, solution development, testing, and technical documentation

5+ years Microsoft Exchange experience

5+ years Active Directory administration

5+ years core network services administration

IAT Level III (DoD 8570 / 8140 compliant) — or ability to obtain within 6 months of TOA

CCNA and/or CCNP

MCITP / MCTS (or modern Microsoft role-based equivalent such as Microsoft 365 Administrator Expert (MS-102), Azure Administrator Associate (AZ-104), Windows Server Hybrid Administrator (AZ-800/801), or Azure Security Engineer (AZ-500))