RoCE / Infiniband Network Engineer

Job description

Who We Are At Kyndryl, we run and reimagine the mission-critical technology systems that drive advantage for the world’s leading businesses. We are at the heart of progress; with proven expertise and a continuous flow of AI-powered insight, enabling smarter decisions, faster innovation, and a lasting competitive edge. For our people—Kyndryls—that means doing purposeful work that powers human progress. Join us and experience a flexible, supportive environment where your well-being is prioritized and your potential can thrive. The Role Who We Are At Kyndryl, we run and reimagine the mission-critical technology systems that drive advantage for the world’s leading businesses. We are at the heart of progress; with proven expertise and a continuous flow of Artificial Intelligence (AI)-powered insight, enabling smarter decisions, faster innovation, and a lasting competitive edge. For our people - Kyndryls - that means doing purposeful work that powers human progress. Join us and experience a flexible, supportive environment where your well-being is prioritized and your potential can thrive. The Role Your Role As an RoCE / Infiniband Network Engineer, you will provide hands-on troubleshooting and change execution for high-speed Graphics Processing Unit (GPU) fabrics. You will work with Remote Direct Memory Access over Converged Ethernet (RoCE) and/or InfiniBand environments, restoring service for common link, switch, Host Channel Adapter (HCA), Network Interface Card (NIC), Remote Direct Memory Access (RDMA), congestion and configuration issues. You will own service restoration and escalate architectural or highly complex fabric conditions to the appropriate Subject Matter Expert (SME). What You Will Do Troubleshoot switch, HCA/NIC, port and optic issues using the Command-Line Interface (CLI), telemetry and fabric-management tools. Analyze link errors, drops, flaps, speed and Forward Error Correction (FEC) conditions, congestion counters and RDMA reachability. Operate InfiniBand/Unified Fabric Manager (UFM) or NVIDIA Spectrum-X/RoCE management tooling within approved access boundaries. For RoCE environments, troubleshoot Data Center Bridging (DCB), Priority Flow Control (PFC), Explicit Congestion Notification (ECN), Quality of Service (QoS) configuration and common lossless-network issues. For InfiniBand environments, troubleshoot link, subnet and fabric conditions, HCA state and common subnet-management issues. Participate in Border Gateway Protocol (BGP), Ethernet Virtual Private Network (EVPN), leaf-spine and fabric change implementation as defined by site architecture. Correlate network and fabric symptoms with multi-node GPU/NVIDIA Collective Communications Library (NCCL) workload degradation and engage compute/software teams as needed. Perform approved firmware and Operating System (OS) changes, cable/optic replacement and post-change validation. Own Service-Level Agreement (SLA) and ticket progression, contribute to Root Cause Analysis (RCA), mentor Level 1 (L1) engineers and improve operational runbooks. Your Future at Kyndryl This role gives you the opportunity to deepen your expertise in high-speed networking for GPU, AI and High-Performance Computing (HPC) environments while expanding your capabilities across RDMA, RoCE, InfiniBand, fabric telemetry and automation. As your experience grows, you can progress toward senior network engineering, fabric specialist, architecture or technical leadership roles, supported by continuous learning and hands-on experience in mission-critical environments. Who You Are Who You Are You’re good at what you do and possess the required experience to prove it. However, equally as important, you have a growth mindset and are keen to drive your own personal and professional development. You are customer-focused, someone who prioritizes customer success in their work. And finally, you’re open and borderless, naturally inclusive in how you work with others. Required Skills and Experience 3-5+ years of data-center network engineering experience, including hands-on high-speed fabric experience. Production experience with RoCE version 2 (RoCEv2)/RDMA and/or InfiniBand; experience in GPU or HPC environments is strongly preferred. Hands-on experience with switch CLI, optics/cabling, NIC/HCA diagnostics and performance counters. Working knowledge of DCB, PFC, ECN, QoS and lossless Ethernet for RoCE environments. Working knowledge of UFM and subnet-management concepts for InfiniBand environments. Experience with leaf-spine, BGP/EVPN and high-speed 100/200/400 Gigabit (Gb)+ fabrics. Formal incident management, change management and RCA experience. Preferred Skills and Experience Experience supporting GPU, AI or HPC infrastructure and correlating network conditions with distributed workload performance. Familiarity with NVIDIA Spectrum-X and/or ConnectX technologies. Experience with network telemetry, fabric-management tooling and/or network automation. Being You The “Kyn” in Kyndryl means kinship, which represents the strong bonds we have with each other, our customers and our communities. We focus on ensuring all Kyndryls feel included and we welcome people of all cultures, backgrounds, and experiences. Even if you don’t meet every requirement, we encourage you to apply. We believe in growth, and we’re excited to see what you can bring. At Kyndryl, employee feedback has told us that our number one driver of employee engagement is belonging. That sense of belonging - being a valued, respected, trusted member of the team - is fundamental to our culture and fueling great experiences for our customers. This dedication to welcoming everyone into our company means that Kyndryl gives you the ability to thrive and contribute to our culture of empathy and shared success. That’s The Kyndryl Way. What You Can Expect Your career with us isn’t just a job - it’s an adventure with purpose. We offer a dynamic, hybrid-friendly culture that supports your well-being and empowers you to grow. Our Be Well programs are thoughtfully designed to support your financial, mental, physical, and social health because we know that when you feel your best, you do your best. From your very first day, you’ll dive into impactful work that powers the systems our customers rely on every day. You won’t just contribute - you’ll make a difference, tackling meaningful projects that sharpen your skills and fuel your growth. We’re here to champion your journey. With powerful tools to chart your career path, personalized development goals aligned with your ambitions, and continuous feedback to keep you inspired and on track, you’ll have everything you need to thrive and evolve. You’ll develop in-demand skills to grow your career and achieve your ambitions with access to cutting-edge learning opportunities - from certifications with Microsoft, Google, and Amazon to coaching and hands-on experiences. And through it all, you’ll be part of a culture that values empathy, restless learning, and a devotion to shared success. We want you to thrive here, and we’re committed to helping you do just that. Ready to make an impact? Join us and help shape what’s next. Get Referred! If you know someone that works at Kyndryl, when asked ‘How Did You Hear About Us’ during the application process, select ‘Employee Referral’ and enter your contact's Kyndryl email address. Being You The “Kyn” in Kyndryl means kinship, which represents the strong bonds we have with each other, our customers and our communities. We focus on ensuring all Kyndryls feel included and we welcome people of all cultures, backgrounds, and experiences. Even if you don’t meet every requirement, we encourage you to apply. We believe in growth, and we’re excited to see what you can bring. At Kyndryl, employee feedback has told us that our number one driver of employee engagement is belonging. That sense of belonging — being a valued, respected, trusted member of