Sr. L3 Network Engineer | 12696

CTI Consulting

  • Pleasanton, California
  • 4 days ago

    Highlights

    Strong hands-on knowledge of Layer 2 protocols (RSTP, VLANs, trunk/access ports, MAC address tables), specifically on Cisco Catalyst 9300 platforms. CTI Staffing is partnering with a leading global consumer products organization to find a Senior Network Engineer III for their network infrastructure team, based in Pleasanton, CA.

    Numbers & Facts

    LocationPleasanton, California

    Description

    About This Opportunity

    CTI Staffing is partnering with a leading global consumer products organization to find a Senior Network Engineer III for their network infrastructure team, based in Pleasanton, CA.

    This team owns enterprise network design and security across a large, complex environment. You'll be the engineer other teams come to when a routing problem or a segmentation project needs real expertise, not a quick patch. This role has room to shape how the network is architected going forward, not just maintain what's already built.

    What You'll Do

    • Design and implement Layer 2 and Layer 3 network architectures on enterprise Cisco Catalyst platforms
    • Develop and deploy BGP routing strategies for internal and external connectivity
    • Build microsegmentation solutions to strengthen network security and isolation
    • Automate network configuration and deployment using Terraform and Ansible
    • Translate business requirements into scalable network designs alongside cross-functional teams
    • Troubleshoot complex network issues in live production environments
    • Maintain documentation and configuration standards for the network team
    • Mentor junior network engineers on design and troubleshooting practices


    Requirements

    What You Bring

    Must-Have:

    • 8+ years of enterprise network engineering experience
    • Strong hands-on knowledge of Layer 2 protocols (RSTP, VLANs, trunk/access ports, MAC address tables), specifically on Cisco Catalyst 9300 platforms
    • Proven hands-on experience with BGP routing (iBGP and eBGP configuration and optimization)
    • Genuine hands-on experience with Terraform and Ansible for network automation
    • Hands-on experience implementing microsegmentation (PVLANs, TrustSec/SGTs, or equivalent)
    • Demonstrated ability to architect network solutions independently, not just maintain existing designs
    • Bachelor's degree in Computer Science, IT, or related field, or equivalent professional experience
    • Strong analytical, troubleshooting, and communication skills

    Nice-to-Have:

    • Experience with Cisco Catalyst 9800 wireless controllers
    • Experience designing or supporting networks in Operational Technology (OT) environments

    Technical Environment:

    • Cisco Catalyst 9300/9800
    • BGP (iBGP/eBGP)
    • Terraform, Ansible
    • PVLANs, TrustSec/SGT

    What Success Looks Like:

    • Independently owns network design decisions within the first 6 months
    • Has delivered at least one complete routing or microsegmentation project
    • Is mentoring junior engineers without needing to be prompted


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