Senior Network Engineer Infra, Data Center & Fabric, Juniper
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Job Summary
Title: Senior Network Engineer - Data Center & Fabric Juniper
Skills: Juniper Data Center
Role and Responsibilities
- Monitor and administer enterprise LAN/WAN data center and wireless environments (Nexus Catalyst ASA/Firepower SD WAN).
- Triage troubleshoot and resolve L1L3 network incidents and performance issues; escalate to vendors as needed.
- Manage IP addressing VLANs trunking EtherChannel/Port Channel VPC and routing adjacencies (OSPF/BGP/EIGRP).
- Maintain and optimize Cisco Nexus switching (e.g. 5K/7K/9K) including VPC HSRP/VRRP fabric modules and FEX.
- Support firewall rule changes NAT site to site and remote access VPNs; collaborate with security on policy enforcement.
- Ensure network monitoring alerting and logging are operational (e.g. SolarWinds LogicMonitor ThousandEyes NetFlow).
- Provide on call support within a rotation and support scheduled after hours changes.
- Plan and execute network changes (migrations upgrades code/firmware updates new site turn ups).
- Implement redundancy and high availability: VPC/MLAG routing protocol tuning first hop redundancy SD WAN HA.
- Contribute to network segmentation and Zero Trust initiatives (ACLs VRFs micro segmentation).
- Participate in cloud connectivity projects (ExpressRoute/Direct Connect Cloud NAT VPN to AWS/Azure/GCP).
- Automate routine tasks using Ansible/Python templating and configuration standards where appropriate.
- Maintain platform documentation SOPs knowledge articles and architectural diagrams.
Must Have
- Platforms: Cisco Nexus (5K/7K/9K) Catalyst (9K/3K) ASA/FTD Wireless controllers (optional).
- Tools: CLI (IOS/NX OS) SSH SNMPv3 NetFlow/sFlow Syslog Wireshark SolarWinds/LogicMonitor/PRTG.
- Security: ACLs device hardening VPNs (IPsec/AnyConnect) identity/AAA (TACACS/RADIUS).
- OS & Infra: Solid understanding of DNS/DHCP/NTP/IPAM; basic Linux/Windows networking.
- Documentation: Visio/; strong written/runbook skills.
- Data Center & Fabric: VXLAN/EVPN ACI concepts (tenants contracts EPGs) spine leaf design.
- SD WAN: Cisco Viptela or Meraki SD WAN.
- Firewalls & NAC: Cisco Firepower Palo Alto Fortinet; Cisco ISE/802.1X.
- Cloud & Hybrid: Azure/AWS/GCP networking load balancers (F5 AVI/NSX ALB) Private Link/ExpressRoute.
- Automation & Scripting: Ansible Python Git CI/CD for network changes Infrastructure as Code basics.
- Telecom: MPLS DIA circuits management carrier coordination.
- SRE Practices: SLO/SLI for network services synthetic monitoring telemetry.
- Strong analytical and problem-solving abilities.
- Excellent communication skills.
- Ability to lead technical discussions and mentor junior engineers.
- Strong documentation and diagramming skills (Visio Lucidchart ).
Education
- Minimum BS/BA degree or equivalent experience.
- Minimum 10 years of progressive experience in infrastructure/network architecture implementation troubleshooting and support.
Certifications: CCNA (required or equivalent experience) CCNP Enterprise or CCNP Data Center (strong plus) ITIL Foundation (plus).
Required Skills:
60-70
Required Education:
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