Senior Engineer - HPC Network

CoreWeave; Greater London; Hybrid; GBP 123,000 - 165,000; Full time

Job summary

A cloud technology provider in Greater London is looking for an HPC Network Engineer to manage and deploy large-scale data center networks. The role requires extensive experience with Infiniband networking, strong Linux knowledge, and the ability to automate deployment processes. You will collaborate with global teams to solve complex issues and ensure system reliability. Benefits include competitive pay, comprehensive medical and dental insurance, and a focus on innovation. Remote work may be available depending on location.

Benefits

Family-level Medical Insurance

Family-level Dental Insurance

Generous Pension Contribution

Life Assurance at 4x Salary

Tuition Reimbursement

Employee Assistance Programme

Qualifications

• Hands-on experience with Infiniband networking technologies required.
• Strong foundational knowledge of networking concepts and protocols.
• Excellent verbal and written communication skills.

Responsibilities

• Deploy and manage Infiniband network systems in data centers.
• Oversee lifecycle of IB hardware and software.
• Develop tools to automate deployment and troubleshooting workflows.
• Analyze complex network performance issues.
• Provide 24/7 operational support.

Skills

Infiniband networking technologies

Linux systems administration

Grafana

PromQL

Ansible

HELM

Scripting (Python, Go)

Problem-solving

Education

Bachelor's degree in a relevant field

Job description

CoreWeave is The Essential Cloud for AI™. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastructure performance with deep technical expertise to accelerate breakthroughs and turn compute into capability. Founded in 2017, CoreWeave became a publicly traded company (Nasdaq: CRWV) in March 2025. Learn more at www.coreweave.com.

We’re proud to be a Living Wage accredited Employer.

Network Engineer, HPC Network

We are looking for a highly motivated HPC Network Engineer to support the deployment and management of large‑scale data center infrastructure. This role places you at the forefront of high‑performance computing technologies, with a strong focus on Infiniband (IB) systems. You’ll work closely with global teams and customers to ensure optimal system performance, reliability, and scalability while driving continuous improvement through automation and operational excellence.

Key Responsibilities

• Deploy and manage Infiniband network systems in high‑scale data center environments.
• Oversee the end‑to‑end lifecycle of IB hardware and software components.
• Develop and maintain tools to automate deployment, monitoring, and troubleshooting workflows.
• Analyze and resolve complex network performance, connectivity, and stability issues.
• Collaborate cross‑functionally with internal teams and external customers around the globe to ensure high‑quality outcomes.
• Participate in a rotating on‑call schedule to provide 24/7 operational support.

Required Qualifications

• Hands‑on experience with Infiniband networking technologies.
• Strong foundational knowledge of networking concepts and protocols.
• Experience using Grafana and PromQL for monitoring and visualization.
• Proficient in Linux systems administration.
• Experience with infrastructure‑as‑code tools such as Ansible and HELM.
• Proficiency in at least one scripting or programming language (e.g., Python, Go).
• Strong problem‑solving skills with a proven track record in troubleshooting complex infrastructure and application issues.
• Familiarity with diagnosing issues at the network and server hardware component level.
• Excellent verbal and written communication skills, with a collaborative mindset.

Preferred Qualifications

• Experience operating large‑scale environments with 1,000+ switches or nodes.
• Background in data center networking.
• Exposure to HPC‑specific workloads and architectures.
• Familiarity with NVIDIA UFM (Unified Fabric Manager).
• Experience with NCCL (NVIDIA Collective Communications Library).

The base pay and target total cash for this position range from $165,000 to $220,000 and [ttc $190,000] to [ttc $253,000], accordingly. Pay is based on a number of factors including market location and may vary depending on job‑related knowledge, skills, and experience. This position includes a discretionary bonus, equity, and a comprehensive benefits package.

What We Offer

In addition to a competitive salary, we offer a variety of benefits to support your needs, including:

• Family‑level Medical Insurance
• Family‑level Dental Insurance
• Generous Pension Contribution
• Life Assurance at 4x Salary
• Critical Illness Cover
• Employee Assistance Programme
• Tuition Reimbursement
• Work culture focused on innovative disruption

Benefits may vary by location.

Our Workplace

While we prioritize a hybrid work environment, remote work may be considered for candidates located more than 30 miles from an office, based on role requirements for specialized skill sets. New hires will be invited to attend onboarding at one of our hubs within their first month. Teams also gather quarterly to support collaboration.

CoreWeave is an equal opportunity employer, committed to fostering an inclusive and supportive workplace. All qualified applicants and candidates will receive consideration for employment without regard to race, color, religion, sex, disability, age, sexual orientation, gender identity, national origin, veteran status, or genetic information.