Mirantis is hiring: Principal HPC Network Engineer
Location: EU - remote/hybrid
Employment: Full-time
Compensation: Flexible depending on experience and hiring location.

Mirantis is a global open-source infrastructure company building Kubernetes, cloud-native and AI infrastructure platforms. The company works with customers across 90 countries and helps organisations deploy and operate GPU-powered infrastructure across on-premises, cloud, hybrid and edge environments. 

We are looking for a Principal HPC Network Engineer to take technical ownership of high-performance networking environments supporting large-scale HPC and AI/ML infrastructure.
This is a senior hands-on role focused on the architecture, deployment, optimisation and troubleshooting of InfiniBand and Ethernet fabrics.

What you’ll work on:
Design, deploy and operate high-performance networks for HPC and AI clusters.
Own the architecture and optimisation of InfiniBand fabrics.
Manage switches, HCAs, subnet managers and fabric configurations.
Troubleshoot complex latency, throughput, routing and connectivity issues across InfiniBand and Ethernet environments.
Lead performance tuning, monitoring and capacity planning.
Deploy and support Fortinet solutions, including FortiGate, FortiManager and FortiAnalyzer.
Partner with compute, storage and platform teams to support cluster operations.
Lead critical incident escalations, network upgrades, migrations and new deployments.
Define network standards, operational procedures and technical documentation. 

What we’re looking for:
Deep hands-on experience with InfiniBand, ideally Mellanox/NVIDIA.
Strong networking expertise across TCP/IP, BGP, OSPF, VLANs, QoS and network architecture.
Experience supporting HPC, data centre or large-scale AI/ML infrastructure.
Practical experience with Fortinet products and firewall configuration.
Knowledge of RDMA, MPI and low-latency networking concepts.
Linux administration and automation skills using Bash or Python.
Experience with Ansible, Terraform or other Infrastructure-as-Code tools is a plus.
Ability to independently own complex technical challenges and act as a senior escalation point. 

Why join Mirantis?
Work directly with advanced NVIDIA, InfiniBand, HPC and AI infrastructure rather than conventional enterprise networking.
Take real technical ownership of architecture, performance and reliability.
Solve complex production problems where network design directly affects GPU utilisation and AI workload performance.
Influence standards, tooling and future infrastructure deployments instead of only maintaining an established environment.
Work across networking, compute, storage, Kubernetes and AI platform teams.
Join a company deeply involved in Kubernetes, open-source infrastructure and the development of next-generation AI platforms.

Interested? Send me a direct message with your LinkedIn profile or CV, and I’ll share more details @Yuliana_S_22