Network Engineer - TS/SCI w/FULL SCOPE POLY with Security Clearance

Yellowfin Technology Corp. is seeking experienced Network Engineers to support critical national security missions within the IC. We are building a pipeline of highly skilled professionals who are passionate about designing, implementing, securing, and maintaining enterprise network infrastructure supporting mission-critical operations. Whether you are an early-career engineer or a senior technical leader, we are interested in professionals with expertise in Cisco networking technologies, enterprise infrastructure, network security, and large-scale systems integration.

Responsibilities
Depending on experience level, responsibilities may include: • Design, implement, configure, and maintain enterprise network infrastructure. • Monitor network performance and availability while identifying opportunities for optimization. • Perform routing, switching, and network troubleshooting across complex environments. • Support network architecture, engineering, and modernization initiatives. • Develop and maintain network diagrams, documentation, and accreditation artifacts. • Integrate hardware and software solutions supporting DoW and IC environments. • Support Cyber Network Defense (CND) operations and network security initiatives. • Perform system upgrades, migrations, patching, and lifecycle refresh activities. • Utilize network monitoring, diagnostic, and performance analysis tools. • Support testing, validation, and quality assurance of network implementations. • Collaborate with systems engineers, cybersecurity professionals, software developers, and mission stakeholders. • Lead large-scale network installation and integration efforts (senior-level positions).

Network Engineer 1 (NE1) • Bachelor's degree in network engineering, Computer Science, Information Technology, or related discipline (experience substitution allowed per contract) • 3+ years of network engineering experience • Cisco Certified Network Professional (CCNP) required Network Engineer 2 (NE2) • Bachelor's degree with 6+ years of experience or Master's degree with 4+ years • Cisco certification required • Experience supporting enterprise network architecture and infrastructure Network Engineer 3 (NE3) • Master's degree with 10+ years, Bachelor's degree with 12+ years, or equivalent experience • Cisco Certification required • IAT Level III Certification required • Experience leading enterprise network engineering projects

Preferred Skills • Cisco Routing & Switching • Enterprise LAN/WAN • BGP, OSPF, EIGRP • Cisco Catalyst & Nexus • Cisco Firepower / ASA • Network Automation (Python, Ansible) • SD-WAN • Network Monitoring & Performance Analysis • SolarWinds • Wireshark • Network Architecture • Network Security