Senior Network Engineer

Neysa; Mumbai; On-site; INR 4,000,000 - 7,000,000; Full time

Job summary

Neysa is building AI/HPC infrastructure in Mumbai, seeking a Network Engineer to design, build, and operate large-scale network fabrics that support GPU clusters, HPC workloads, and mission-critical AI systems. This hands-on role covers the full lifecycle from requirements to deployment and operation.

You will design EVPN-VXLAN Clos/Leaf-Spine fabrics, configure BGP/OSPF/VXLAN, deploy lossless fabrics, and develop automation using Python and Ansible while coordinating with vendors for rapid

Qualifications

• Bachelor's degree in computer science, electrical/computer engineering, physics, mathematics, or related field (or equivalent industry experience).
• 5+ years of hands-on EVPN/BGP/VXLAN experience.
• Proficiency in at least one major platform (Arista, Cumulus, SONiC, Juniper, Cisco).
• Production troubleshooting experience.
• Strong documentation and communication skills.

Responsibilities

• Design and deploy EVPN-VXLAN Clos/Leaf-Spine fabrics for HPC environments.
• Configure and troubleshoot BGP, OSPF, VXLAN, EVPN across multi-vendor platforms.
• Deploy lossless fabrics (Ethernet and InfiniBand) with RDMA technologies.
• Build and validate network topologies in lab environments.
• Develop and optimize network automation using Python and Ansible.
• Monitor network health, troubleshoot production issues, and coordinate with vendors.

Skills

TCP/IP networking

EVPN/BGP/VXLAN expertise

Linux networking

Network troubleshooting

Documentation & knowledge transfer

Ownership mindset

Education

Bachelor’s degree in CS/Engineering

Tools

Arista EOS

Cumulus Linux

Cisco IOS/NX-OS

Nokia SR Linux

Job description

We're building AI/HPC infrastructure that powers the next generation of high-performance computing. As a Network Engineer, you'll responsible to design, build, and operate large-scale network fabrics that support GPU clusters, HPC workloads, and mission-critical AI systems. You'll engage across the full lifecycle—from requirements gathering and architecture design through deployment, optimization, and operational support. This is hands-on infrastructure work.

What you'll be doing:

• Design and deploy EVPN-VXLAN Clos/Leaf-Spine Ethernet fabrics and InfiniBand networks for high-performance computing environments
• Configure and troubleshoot BGP, OSPF, VXLAN, and EVPN protocols across multi-vendor platforms (Arista, Cumulus, SONiC, Juniper, Cisco)
• Deploy lossless fabrics (Ethernet and InfiniBand) which use RDMA technologies for high-performance computing.
• Build and validate network topologies in lab environments using simulation tools (NVIDIA Air, GNS3, EVE-NG)
• Develop and optimize network automation solutions using Python and Ansible for network infrastructure
• Support operational excellence: monitor network health, troubleshoot production issues, and coordinate with vendors for rapid resolution
• Create comprehensive documentation, operational runbooks, and knowledge bases for customer support and knowledge transfer

What we need to see:

Core Networking (10+ years)

• Deep expertise in TCP/IP stack, Layer 2/3 switching, routing, and data center architecture
• Expert-level knowledge of BGP, OSPF, EVPN, and VXLAN (5+ years hands-on experience)
• Strong understanding of Clos/Leaf-Spine fabric design and multi-tier network architectures
• Advanced network troubleshooting using packet sniffers, analysis tools, and diagnostic techniques
• Hands-on with at least one network operating system viz. Arista EOS, Cumulus Linux, Cisco, Nokia SR Linux etc.
• Configuration, testing, validation, and issue resolution on these platforms in production environments
• Ethernet lossless networking concepts (PFC, ECN, DCQCN, RoCEv2)
• InfiniBand networks for HPC: configuration, troubleshooting, and performance optimization in large-scale environments
• Linux networking knowledge

Automation & Infrastructure-as-Code

• Expert-level Python scripting for network automation and tooling
• Extensive experience with Ansible, Salt, or equivalent infrastructure automation frameworks
• Ability to develop CI/CD pipelines for network infrastructure provisioning and testing
• Git version control and Infrastructure-as-Code practices
• Lab environment simulation and topology validation using NVIDIA Air, GNS3, EVE-NG, or similar tools

Ways to stand out from the rest:

• Networking certifications: Cisco, Arista, Nokia, Nvidia or equivalent
• Kubernetes and Docker; container networking
• Cloud networking: AWS, GCP, Azure; hybrid cloud and on-premises integration
• Personal GitHub repository with Python examples and evidence of coding expertise

Minimum Qualifications:

Bachelor’s degree in computer science, Electrical/Computer Engineering, Physics, Mathematics, or related field (or equivalent industry experience) years of networking fundamentals and data center architecture

• 5+ years of hands‑on EVPN/BGP/VXLAN experience
• Proficiency in at least one major platform (Arista, Cumulus, SONiC, Juniper, Cisco)
• Production troubleshooting experience.

Soft Skills:

• Strong problem-solving and debugging abilities
• Ownership mindset with accountability for deployment quality and customer success
• Cross-functional collaboration with other teams
• Proactive approach to continuous learning and staying current with AI infrastructure trends
• Strong documentation and presentation skills, with ability to defend design decisions in peer reviews.