Senior Network Engineer - Support

5–10+ years of hands-on experience in enterprise networking, cloud networking, network security, and hybrid infrastructure operations. Strong hands-on experience in AWS networking services including VPC, subnetting, route tables, Transit Gateway, Direct Connect, VPN, VPC Peering, Route 53, ALB/NLB, Security Groups, NACLs, AWS WAF, Network Firewall, PrivateLink, and VPC Endpoints. Strong working knowledge of OCI networking including VCN, DRG, route tables, security lists, NSGs, FastConnect, Site-to-Site VPN, LPG/RPC, Service Gateway, NAT Gateway, Load Balancer, and private/public connectivity models. Strong CCNA/CCNP-level understanding of routing and switching concepts including TCP/IP, OSI model, VLAN, trunking, STP, EtherChannel, subnetting, static routing, OSPF, BGP, EIGRP, NAT, ACL, HSRP/VRRP, and QoS. Ability to design and troubleshoot hybrid connectivity between cloud and on-premises using AWS Direct Connect, OCI FastConnect, IPsec VPN, BGP routing, redundant tunnels, and failover design. Strong knowledge of firewall and network security concepts including security zones, NAT policy, security policy, URL filtering, IDS/IPS, SSL inspection, VPN, threat prevention, and traffic logs. Experience with Palo Alto and Fortinet or similar next-generation firewall platforms. Ability to design secure and scalable hub-and-spoke network architecture across AWS, OCI, and enterprise data centers. Strong understanding of DNS, DHCP, SSL certificates, load balancer health checks, session persistence, SSL offloading, backend pools, listeners, and traffic routing. Experience in troubleshooting production issues related to application connectivity, blocked traffic, routing loops, asymmetric routing, packet loss, MTU issues, DNS failures, VPN instability, and cloud security misconfiguration. Strong understanding of Infrastructure as Code and automation tools such as Terraform, CloudFormation and AWS/OCI CLI. Experience in cloud governance, network documentation, compliance support, audit readiness, firewall rule review, and secure network design. Ability to work with cross-functional teams, vendors, service providers, security teams, cloud teams, and business stakeholders. Strong communication skills with the ability to explain technical issues clearly to both technical and non-technical stakeholders. Ability to work independently, handle critical incidents, lead troubleshooting bridges, and provide clear updates during production outages.