TS/SCI Network Engineer – Secure, Multi-Site & Automation

LMI Consulting, LLC; Washington (District of Columbia); On-site; USD 90,000 - 150,000; Full time

Job summary

LMI seeks a Network Engineer to design, build, and sustain classified network infrastructure across multiple government sites, including two SCIF facilities for TS/SCI users. Responsibilities span automation, security, and cross-team collaboration in a dynamic federal environment.

Qualified candidates have 5+ years in network engineering, RMF/NIST familiarity, and SCIF design awareness, with strong certification credentials. TS/SCI clearance and SAP eligibility are required.

Qualifications

• Bachelor's degree or equivalent experience required.
• 5+ years of network engineering experience, including in classified environments.
• Working knowledge of routing, switching, and network security fundamentals.
• Relevant certification (e.g., CCNA, CCNP, Security+).
• Familiarity with ICD 705 physical security standards for SCIF design and accreditation.
• Familiarity with RMF per NIST SP 800-37 and NIST SP 800-53 for system security authorization.

Responsibilities

• Design, implement, configure, test, maintain, and sustain enterprise network infrastructure and services across all sites.
• Develop logical and physical network designs based on performance, availability, security, and operational requirements.
• Engineer resilient connectivity across sites, datacenters, cloud, wide-area networks, and other distributed environments.
• Apply segmentation, routing, switching, traffic management, and access control principles.
• Monitor network health, capacity, latency, availability, and utilization.
• Troubleshoot complex network issues using structured analysis, logs, and telemetry.
• Establish redundancy, failover, fault isolation, and recovery mechanisms.
• Integrate network security controls consistent with zero-trust and defense-in-depth principles.
• Develop repeatable configurations, automation, and infrastructure-as-code practices.
• Maintain diagrams, configurations, interface definitions, procedures, and change records.
• Participate in change management, incident response, root-cause analysis, and corrective-action planning.
• Collaborate with systems, network, cybersecurity, and operations teams.
• Evaluate technologies based on standards compliance, interoperability, lifecycle cost, supportability, and mission suitability.
• Design and implement network automation to standardize configuration, testing, deployment, monitoring, and compliance.
• Support design and integration of VTC and conference room AV capability across all program sites, including classified and unclassified variants.
• Support network and security operations center (NOC/SOC) functions, including monitoring tools, coverage models, and 24x7 support where required.

Skills

Network design

Routing & Switching

Zero Trust

Security compliance

NIST RMF

Automation scripting

Education

Bachelor's degree or equivalent

Job description

LMI seeks a Network Engineer to design, build, and sustain classified network infrastructure across multiple government sites, including two SCIF facilities for TS/SCI users. Responsibilities span automation, security, and cross-team collaboration in a dynamic federal environment.

Qualified candidates have 5+ years in network engineering, RMF/NIST familiarity, and SCIF design awareness, with strong certification credentials. TS/SCI clearance and SAP eligibility are required.