SMX is seeking Field Service Representatives SDN - Senior Level III to support the sustainment, integration, and enhancement of USSOCOM Satellite Deployable Node (SDN) Family of Systems (FoS). The candidate will work hands-on with tactical communications systems across CONUS (with possible limited OCONUS) locations, providing life cycle sustainment, training, and on-site technical support. This role also involves systems integration responsibilities, including testing, vendor coordination, and C4ISR capability development in support of DoD tactical operations.

REQUIRED QUALIFICATIONS:

• DoD TS/SCI security clearance
• 5+ years of experience in tactical systems support, systems integration, or similar DoD technical field roles
• Security+
• Strong knowledge of tactical network design, Linux/server administration, and C4ISR systems
• Familiarity with SOF mission requirements and operational TTPs
• Demonstrated ability to troubleshoot and configure secure communication networks and devices
• Excellent communication, technical documentation, and stakeholder coordination skills
• 10 years of experience
• Masters degree

PREFERRED QUALIFICATIONS:

• Experience with tactical routers, switches, SATCOM systems, LTE/cellular tech, and secure certificate management
• Familiarity with government property handling (GFP/CAP), acquisition processes, and fielding integration

• Provide 24/7/365 Tier III technical support to units operating SDN equipment via phone, email, or on-site support
• Conduct full operational system checks, pull network services, and validate USSOCOM/SIE connectivity
• Inventory, track, and maintain program equipment using COLTS, DPAS, and DA Form 2062
• Conduct sustainment and OJT training; managing event documentation, reports, and training material needs
• Coordinate equipment shipment, RMA processing, and logistics support for maintenance events
• Ensure all maintenance actions, inventories, and field events are logged, closed, and reported accurately
• Integrate new hardware/software into existing tactical network architectures, supporting RDT&E and demonstrations
• Configure and support tactical communications equipment, including MANET radios (e.g., PRC-148C, PRC-163C, MPU-5)
• Support TAK (ATAK/WinTAK/CIVTAK) ecosystem implementation and training, including TAK Server deployment
• Conduct equipment evaluations and identify capability gaps; assist with acquisition support and vendor coordination
• Train end-users and embedded personnel on new systems and technologies, ensuring operational readiness
• Support integration across commercial and tactical networks, satellite, LTE, and router/switch environments
• Provide leadership to less senior staff
• May perform both SDN and TACLAN support