Senior Software Engineer - SDWAN

About the Role :

We are seeking a Senior Software Engineer with advanced networking expertise, ideally at CCIE / JNCIE-equivalent level, to design, implement, and optimize SD-WAN solutions. This role requires deep technical proficiency in real-time, large-scale networking, combined with hands-on experience in network automation, testing, and troubleshooting.

The ideal candidate will possess strong experience in Cisco SD-WAN (vManage, vEdge, cEdge) environments, comprehensive understanding of IPv4 / IPv6 routing, and solid scripting skills in Python for automation. This role will involve both engineering and operational responsibilities, including network design, configuration, debugging, and automation of SD-WAN services.

Key Responsibilities :

• Design, configure, and implement Cisco SD-WAN (Viptela) solutions, including vManage, vBond, and vSmart components.
• Perform end-to-end network configuration for both IPv4 and IPv6 using CLI and vManage GUI.
• Architect redundant, scalable, and secure WAN topologies for enterprise-grade customers.
• Evaluate and recommend SD-WAN policies, traffic engineering strategies, and security frameworks.
• Perform advanced troubleshooting of SD-WAN network incidents, including control plane, data plane, and management plane issues.
• Debug complex real-time networking environments using diagnostic tools and packet captures (e.g., Wireshark, tcpdump).
• Analyze network performance, identify bottlenecks, and recommend optimizations.
• Work on incident management and RCA (Root Cause Analysis) for critical issues.
• Support post-deployment maintenance and operations, ensuring high network availability.
• Configure and troubleshoot major routing protocols : OSPF, EIGRP, BGP (for IPv4 and IPv6).
• Implement and manage VPNs (IPSec, TLS, DTLS) and tunneling protocols (GRE, DMVPN).
• Configure and support network services and protocols such as : TCP / IP, VRRP, MPLS, BFD, DHCP, QoS, NAT, ZBFW, and Multicast.
• Manage and maintain network devices across platforms like ISR / ASR routers, vEdge, cEdge, and Catalyst switches.
• Develop automation scripts and network configuration tools using Python (and optionally Ansible or REST APIs).
• Integrate automated testing workflows for SD-WAN using Python, Postman, or custom-built frameworks.
• Participate in manual and automated SD-WAN testing, ensuring high availability, performance, and compliance.
• Design and maintain network simulation / test environments to validate configurations and feature enhancements.
• Deploy and manage virtualized network environments using VMware, KVM, or Cisco Cloud platforms.
• Implement and troubleshoot security technologies, including firewall policies, IPSec encryption, and ZBFW configurations.
• Support VPN, SSL / TLS configurations, and ensure compliance with organizational security standards.
• Maintain knowledge of Linux-based systems for network services, log analysis, and scripting automation.
• Collaborate with cross-functional teams including QA, DevOps, and Product Engineering for SD-WAN releases and updates.
• Participate in design reviews, network audits, and performance tuning sessions.
• Provide mentorship to junior network engineers and act as a technical escalation point for complex issues.
• Document architecture designs, configuration templates, and troubleshooting runbooks.

Required Technical Skills :

(ref : hirist.tech)