Larsen & Toubro Limited Vyoma- NVIDIA Network Engineer (InfiniBand / Ethernet)

• *Why Choose Balbhas?**
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Join a team that's transforming how businesses understand and leverage their data. We're not just building analytics solutions — we're shaping the future of digital intelligence.

### **Competitive Salary**

Industry\-leading compensation packages with performance bonuses and equity options.

### **Flexible Work**

Remote\-first culture with flexible hours and modern collaborative workspaces.

### **Learning \& Development**

Continuous learning opportunities with training budgets and conference attendance.

### **Health \& Wellness**

Comprehensive health insurance, wellness programs, and mental health support.

### **Team Culture**

Collaborative environment with team building events and inclusive culture initiatives.

### **Work\-Life Balance**

Generous PTO policy, sabbatical opportunities, and family\-friendly benefits.

### **Larsen \& Toubro Limited Vyoma\- NVIDIA Network Engineer (InfiniBand / Ethernet)**

Full\-time

Chennai

4\.0\+ years

NVIDIA Network Engineer (InfiniBand / Ethernet) Job Purpose Deliver and operate ultra‑low‑latency, high‑bisection network fabrics for GPU training at \~10K GPU scale with deterministic performance. Key Responsibilities Implementation Build IB (HDR/NDR) east‑west fabrics and Ethernet north‑south connectivity; leaf‑spine with ECMP. Deploy and tune RoCE v2, PFC/ECN, MTU, buffer profiles; IB routing/credit/timers; SHARP/UCX offloads where applicable. Operations Day‑2 fabric health (congestion hotspots, slow‑drain, link flaps); automate config with Ansible/Terraform. Lifecycle of switch OS/firmware; link‑level optics and cable qualification; inventory and spares. Performance \& Optimization Validate NCCL collectives performance across pods; troubleshoot all‑reduce bottlenecks and imbalance. Implement QoS classes for training vs inference vs control‑plane. Reliability \& Incident Lead P0/P1 critical incident response for NVIDIA GPU infrastructure, including InfiniBand, RoCE, Ethernet fabric and AI/ML cluster environments. Troubleshot performance bottlenecks involving InfiniBand fabrics, RoCE networks, congestion management, NCCL communications, GPUDirect RDMA, and distributed AI training workloads. Led post\-incident reviews and implemented automation, monitoring enhancements, and architectural improvements to increase overall cluster availability, stability, and performance. Create runbooks for path failures, fabric partitions, and credit starvation; design graceful degradation. Security \& Compliance BGP/EVPN multi‑tenancy, ACLs, role‑based access to fabric managers; config signing/change control.

• *Our Culture \& Values**
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### **Innovation First**

We encourage creative thinking and bold ideas that push the boundaries of what's possible in analytics.

### **Collaborative Excellence**

Our diverse teams work together to solve complex challenges and deliver exceptional results for our clients.

### **Continuous Growth**

We invest in our people's development and provide opportunities to learn, grow, and advance their careers.