Senior Network Engineer (Amsterdam)

Together AI; Netherlands; On-site; EUR 90,000 - 130,000; Full time

Job summary

Together AI is seeking a Senior Network Engineer to design, implement, and maintain our high-performance compute network infrastructure across global data centers. You will apply networking principles, automation, and best practices to ensure connectivity, reliability, and scalability for user-facing services and production systems.

With 8+ years in large-scale hybrid data center networks, you will work across Cisco/Arista/Juniper/Mellanox gear, design for multi-tenant environments, and

Qualifications

• 8+ years of professional experience building, managing, and supporting large-scale hybrid data center networks.
• High level of proficiency with TCP/IP networking, including BGP, OSPF, VXLAN, EVPN, and QoS.
• Experience developing network automation pipelines using Python, Ansible, or other infrastructure automation tools.
• Proficient with Wireshark, tcpdump, nmap, MTR, and curl for diagnosing connectivity and latency issues.
• Experience designing and supporting multi-tenant networks.
• Hands-on experience deploying and supporting devices from Cisco, Arista, Juniper, and Mellanox.
• Experience working with cloud networks such as AWS, GCP, and Azure.
• Solid Linux experience; must have RoCE or Infiniband real-work experience.

Responsibilities

• Design, deploy, manage and maintain global multi-vendor, multi-protocol HPC networks.
• Analyze data to diagnose network issues and minimize downtime.
• Evaluate and recommend network technologies, hardware, and software solutions.
• Participate in design reviews to align architecture with business needs, optimizing performance and reliability.
• Manage relationships with external vendors and test hardware/software selections.
• Develop and deploy systems and tools to keep networks running reliably and efficiently.
• Establish best practices and contribute to scalable network solutions.
• Ensure IT governance standards are followed and lead projects addressing complex challenges.

Skills

Networking strategy

Network design

Problem solving

Tools

Python

Ansible

Wireshark

tcpdump

nmap

MTR

curl

Docker

Kubernetes

Slurm

Cisco

Arista

Juniper

Mellanox

AWS

GCP

Azure

Linux

RoCE

Infiniband

Job description

As a Senior Network Engineer at Together, you are responsible for designing, implementing, and maintaining our network infrastructure to ensure seamless connectivity and optimal performance for all user-facing services and production systems. As both a strategic planner and a hands‑on engineer, you apply sound networking principles, operational discipline, and advanced automation to our network environments.

You specialize in networking systems—including routing, switching, network security, and protocols—implementing best practices for availability, reliability, and scalability. You have a keen interest in network design, optimization, and emerging technologies in HPC‑based data center networking.

Outstanding problem‑solving abilities and a comprehensive understanding of fundamental network theory are also critical to your success.

Responsibilities

• Design, deploy, manage and maintain global multi‑vendor, multi‑protocol high performance compute networks.
• Analyze data to diagnose and identify root causes to network issues to minimize downtime.
• Evaluate and recommend network technologies, hardware, and software solutions.
• Participate in design reviews to ensure the proposed network architecture aligns with business needs and is optimized for performance, scalability, and reliability.
• Manage relationships with external vendors and partners to test and verify hardware and software selections.
• Develop, and deploy systems and tools to keep all networks running reliably and efficiently.
• Establish and implement industry best practices and contribute to the design of new scalable network solutions.
• Ensure compliance with IT governance standards and best practices.
• Lead projects to address complex technical challenges, directly contributing to roadmaps and partner alongside the best engineers in the industry to develop world‑class solutions.

Requirements

• 8+ years of professional experience building, managing, and supporting large‑scale hybrid data center networks (excluding enterprise networks).
• High level of proficiency with TCP/IP networking architecture and technologies such as BGP, OSPF, VXLAN, EVPN, and QoS.
• Experience developing network automation pipelines using Python, Ansible, or other languages/tools utilized in infrastructure automation.
• Proficient in using tools such as Wireshark, tcpdump, nmap, MTR, and curl to identify connectivity issues, latency problems, and network bottlenecks.
• Experience designing and supporting multi‑tenant networks.
• Hands‑on experience deploying and supporting network devices from Cisco, Arista, Juniper, and Mellanox.
• Experience working with cloud networks such as AWS, GCP, and Azure.
• Solid experience working in and troubleshooting within a Linux environment.
• Must have either RoCE or Infiniband real work experience.

Preferred

• Experience with Docker, Kubernetes, or Slurm a plus.
• Understanding of AI training workloads and the demands they exert on networks a plus.

About Together AI

Together AI is a research‑driven artificial intelligence company. We believe open and transparent AI systems will drive innovation and create the best outcomes for society, and together we are on a mission to significantly lower the cost of modern AI systems by co‑designing software, hardware, algorithms, and models. We have contributed to leading open‑source research, models, and datasets to advance the frontier of AI, and our team has been behind technological advancement such as FlashAttention, Hyena, FlexGen, and RedPajama. We invite you to join a passionate group of researchers and engineers in our journey in building the next generation AI infrastructure.

Together AI is an Equal Opportunity Employer and is proud to offer equal employment opportunity to everyone regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, veteran status, and more.