Data Centre Network Engineer

Job Overview

In this role, you'll play a key part in developing and leading data centre network initiatives, working collaboratively with diverse Infrastructure and Global Networks teams across multiple time zones. Together, you'll deliver change and transformation across business-critical services. Some out-of-hours work may occasionally be required to support global operations.

You'll bring your expertise as a skilled Data Centre Network Engineer to design, implement, manage, and support the networking infrastructure that underpins our data centres. You'll possess a strong knowledge of enterprise networking technologies, particularly Cisco ACI and Cisco SD-WAN, ensuring our networks are secure, scalable, and high-performing. Experience with automation and Infrastructure-as-Code (IaC) will help you develop efficient and reliable solutions that strengthen Arm's global infrastructure.

We're seeking an individual who is curious, motivated, and collaborative, possessing deep technical skills and the ability to deliver results under pressure. You'll take ownership of outcomes, document your work clearly, and share your knowledge generously to help others grow and succeed.

Responsibilities:

• Design, deploy, and maintain scalable, secure, and highly available network infrastructure across Arm's global data centres.
• Diagnose and resolve complex network issues across multiple platforms, performing root-cause analysis and driving long-term solutions.
• Monitor and optimize network performance to enhance reliability, efficiency, and user experience.
• Automate and innovate network configuration and management using tools such as Ansible, Terraform, Python, and APIs to improve consistency and reduce manual effort.
• Collaborate effectively with cloud, systems, and security teams to build cohesive, high-performing infrastructure that delivers business value.
• Document and share knowledge by maintaining clear design standards, configurations, and procedures, while contributing to team learning through coaching and mentoring.
• Stay curious and informed about emerging technologies and trends in data centre and enterprise networking to improve our environment continuously.
• Contribute to global support coverage by participating in a 24/7 on-call rotation, responding to network incidents in a calm and solution-focused manner.

Required Skills and Experience:

• A highly motivated, dedicated and honest individual with good interpersonal skills and an inclusive approach.
• Bachelor's degree in Computer Science, Information Technology, or a related field (or equivalent experience).
• Cisco Certified Network Professional (CCNP) – ideally the Data Centre or Enterprise specialized.
• 3+ years' hands-on experience working within data centre networking environments.
• Strong expertise with Cisco ACI, including design, deployment, and support.
• Solid foundation of network security, firewalls, and standard methodologies for segmentation.

"Nice To Have" Skills and Experience:

• Familiarity with open network operating systems such as SONiC, or a strong interest in learning and working with open networking technologies.
• Experience with software-defined networking (SDN) architectures and services, with an understanding of how they enhance agility, scalability, and automation.
• Exposure to hybrid or multi-cloud networking across platforms such as AWS, Azure, or Google Cloud Platform (GCP), or enthusiasm to develop these skills.
• Understanding of high-performance computing (HPC) networking concepts and technologies, particularly in large-scale or research environments.

In Return:

We offer an outstanding opportunity to join Arm at a time of growth and development. You will join an engaging, innovative, and diverse team within an encouraging and supportive environment, crafted to foster development and nurture success.

Accommodations at Arm

At Arm, we want to build extraordinary teams. If you need an adjustment or an accommodation during the recruitment process, please email To note, by sending us the requested information, you consent to its use by Arm to arrange for appropriate accommodations. All accommodation or adjustment requests will be treated with confidentiality, and information concerning these requests will only be disclosed as necessary to provide the accommodation. Although this is not an exhaustive list, examples of support include breaks between interviews, having documents read aloud, or office accessibility. Please email us about anything we can do to accommodate you during the recruitment process.

Hybrid Working at Arm

Arm's approach to hybrid working is designed to create a working environment that supports both high performance and personal wellbeing. We believe in bringing people together face to face to enable us to work at pace, whilst recognizing the value of flexibility. Within that framework, we empower groups/teams to determine their own hybrid working patterns, depending on the work and the team's needs. Details of what this means for each role will be shared upon application. In some cases, the flexibility we can offer is limited by local legal, regulatory, tax, or other considerations, and where this is the case, we will collaborate with you to find the best solution. Please talk to us to find out more about what this could look like for you.

Equal Opportunities at Arm

Arm is an equal opportunity employer, committed to providing an environment of mutual respect where equal opportunities are available to all applicants and colleagues. We are a diverse organization of dedicated and innovative individuals, and don't discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.