Senior Data Centre Network Engineer - Cork, Ireland

Company: QT Technologies Ireland Limited

Job Area: Information Technology Group, Information Technology Group > IT Networking

General Summary: Qualcomm is seeking a Senior Data Centre Network Engineer to help architect, design, implement, and operate Qualcomm’s data center networks, with a particular focus on high-performance networking for AI/GPU workloads. This role is based in Cork, acting as a key technical leader and escalation point for large-scale, mission-critical network services and regional buildouts, including hands-on engagement and travel to Saudi Arabia. The successful candidate will bring deep expertise in modern data center networking (leaf-spine fabrics, routing, segmentation, load balancing, automation) and strong operational rigor.

Travel: International travel required — including Saudi Arabia (willingness and no travel restrictions required).

Note: This role requires 5 days per week onsite in our Cork office.

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• Data Centre Network Architecture & Engineering: Architect, design, and implement leaf-spine data center networks and related services to support large-scale compute, storage, and engineering environments.
  
• Own L2/L3 network design and operation across critical protocols/technologies such as BGP, STP, QoS, MLAG/vPC/CLAG, EVPN, VXLAN.
  
• Drive network lifecycle management: scaling, upgrades, capacity planning, refreshes, and risk-managed change execution.
  

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• Design and support application delivery / load balancing architectures including local and global (GSLB), with strong understanding of PKI/SSL, SSL offload, DNS impacts to application delivery.
  

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• Contribute to network designs that enable AI/ML training and inference at scale, emphasizing high bandwidth and low latency connectivity for GPU clusters.
  
• Apply knowledge of AI/GPU networking concepts and technologies such as RDMA, RoCE, and high-speed Ethernet (e.g., 400G/800G roadmaps), and how network bottlenecks impact distributed training/inference performance.
  
• Partner with infrastructure teams to validate and improve architectures supporting multi-node GPU workloads and scalable cluster growth.
  

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• Improve reliability and operational efficiency through automation/orchestration and network-as-code practices (e.g., pipelines, configuration standards, and repeatable deployments).
  
• Lead complex troubleshooting (individual, group, vendor-assisted) and deliver durable root-cause fixes, with strong TCP/IP operations expertise.
  

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• Provide on-site support when needed for deployments, cutovers, audits, and operational readiness activities in Saudi Arabia, collaborating with regional stakeholders and global teams.
  
• Act as a senior escalation point across time zones; coordinate with vendors/partners as needed.
  

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• Senior: 7+ years in large enterprise/data center networking
  
• Fluency in English required
  
• Demonstrated experience designing/implementing leaf-spine data center networks in heterogeneous environments.
  
• Expert knowledge of core DC networking and protocols/technologies including EVPN, VXLAN, BGP, L2/L3 operations, and large-scale troubleshooting.
  
• Experience with application delivery / load balancing architectures and their security/crypto implications (PKI/SSL, SSL offload, DNS).
  
• Willingness and no restrictions to travel internationally, including Saudi Arabia
  

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• Fluency in Arabic
  
• Kubernetes and container platforms
  
• Linux operating systems
  
• Server management (physical and/or virtualized environments)
  

Cork has a proud reputation as Ireland's second largest economic engine and is now one of the Top 20 location choices in Europe with 39,000 people employed by over 170 overseas companies. There is a growing diversity in the region with people from many nationalities relocating to Cork, relishing the opportunity to work and live in a location that offers an excellent quality of life. Cork airport provides access to almost 50 international destinations including transatlantic air routes.

We are an Equal Opportunity employer; all qualified applicants will receive consideration for employment without regard to race, colour, religion, sexual orientation, gender identity, national origin, disability, veteran status, or any protected classification.

Apart from working in an open, relaxed and collaborative space, you will enjoy:

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• Salary, stock and performance related bonus
  
• Maternity/Paternity Leave
  
• Employee stock purchase scheme
  
• Matching pension scheme
  
• Education Assistance
  
• Relocation and immigration support (if needed)
  
• Life, Medical, Income and Travel Insurance
  
• Subsidised memberships for physical and mental well-being
  
• Bicycle purchase scheme
  
• Employee run clubs, including, running, football, chess, badminton + many more
  

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• 3+ years of Networked Systems-related work experience with a Bachelor’s degree.
  

OR

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• 5+ years of Networked Systems-related work experience without a Bachelor’s degree.
  

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• Frequently transports and installs equipment up to 20 lbs.
  
• References to a particular number of years experience are for indicative purposes only. Applications from candidates with equivalent experience will be considered, provided that the candidate can demonstrate an ability to fulfill the principal duties of the role and possesses the required competencies.
  

Qualcomm is an equal opportunity employer. If you are an individual with a disability and need an accommodation during the application/hiring process, Qualcomm is committed to providing an accessible process. You may e-mail or call Qualcomm's toll-free number found here. Qualcomm will provide reasonable accommodations to support individuals with disabilities to participate in the hiring process. Qualcomm is also committed to making our workplace accessible for individuals with disabilities.

Qualcomm expects its employees to abide by all applicable policies and procedures, including but not limited to security and other requirements regarding protection of Company confidential information and other confidential and/or proprietary information, to the extent those requirements are permissible under applicable law.

To all Staffing and Recruiting Agencies: Our Careers Site is only for individuals seeking a job at Qualcomm. Staffing and recruiting agencies and individuals being represented by an agency are not authorized to use this site or to submit profiles, applications or resumes, and any such submissions will be considered unsolicited. Qualcomm does not accept unsolicited resumes or applications from agencies. xcfaprz

If you would like more information about this role, please contact Qualcomm Careers.