Site Reliability Engineer (SRE)

Job Description/Specification:

Network Engineer — Job Description

Overview A Network Engineer designs, implements, and maintains an organization’s network infrastructure to ensure secure, reliable, and high-performance connectivity for users and services.

Key Responsibilities

• Network design & architecture: design LAN/WAN/SD-WAN, data center, and campus networks; plan topology, segmentation, redundancy, and capacity.
• Implementation & configuration: install and configure routers, switches, firewalls, load balancers, wireless controllers, and VPN gateways.
• Network optimization & performance: monitor throughput, latency, jitter; tune QoS, routing protocols, and switching parameters for optimal performance.
• Routing & switching: design and maintain routing (BGP, OSPF, EIGRP), VLANs, STP/RSTP, and inter-VLAN routing.
• Security & access control: implement network security controls (ACLs, stateful firewalls, IDS/IPS), NAC, segmentation, and secure remote access.
• Wireless networking: design, deploy, and troubleshoot Wi‑Fi networks (802.11a/b/g/n/ac/ax), manage controllers and APs, and optimize RF.
• Network monitoring & observability: deploy and maintain monitoring/alerting tools, capture flow data (NetFlow/sFlow), and analyze logs for anomalies.
• Troubleshooting & incident response: diagnose connectivity issues, escalations, and perform root-cause analyses; participate in on-call rotations.
• VPN & remote access: manage site-to-site and client VPNs, ensure secure access for remote users and offices.
• WAN & carrier management: manage MPLS, SD-WAN, direct cloud connections (AWS Direct Connect, Azure ExpressRoute), and vendor relationships.
• Configuration management & automation: maintain configs, use IaC or automation tools (Ansible, Python, Terraform) for provisioning and change control.
• Capacity planning & upgrades: forecast demand, plan network upgrades, and execute migrations with minimal downtime.
• Documentation & standards: maintain network diagrams, runbooks, IP addressing plans, and change logs.
• Collaboration: work with security, cloud, systems, and application teams for network requirements and integrations.

Required Qualifications

• Education: Bachelor’s degree in Computer Science, Networking, or equivalent experience.
• Experience: 3+ years (Network Engineer) or 5+ years (Senior) managing enterprise networks.
• Technical skills:
• Strong knowledge of TCP/IP, subnetting, VLANs, routing, and switching fundamentals.
• Experience with routing protocols: BGP, OSPF, EIGRP.
• Hands-on with enterprise network hardware (Cisco, Juniper, Arista, Fortinet, Palo Alto).
• Familiarity with firewalls, load balancers, and VPN technologies.
• Wireless networking experience and RF troubleshooting.
• Network automation and scripting (Ansible, Python) and familiarity with CI/CD for network changes.
• Experience with cloud networking (VPCs, peering, transit gateways) and hybrid connectivity.
• Monitoring tools: SolarWinds, Grafana, Prometheus, NetBox, or similar.
• Soft skills: analytical troubleshooting, communication, project management, and documentation.

Nice-to-Have

• Certifications: CCNA/CCNP/CCIE, JNCIA/JNCIP, Fortinet NSE, Palo Alto PCNSE.
• Experience with SD-WAN platforms, network virtualization, and intent-based networking.
• Knowledge of network programmability (NETCONF/RESTCONF, gNMI) and telemetry.
• Experience with network security operations and zero-trust networking models.