Optical Network Engineer DWDM

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• Contract: 12 months
  
• Location: Dublin - fully onsite (D2)
  

Join a global-scale optical networking environment supporting one of the most advanced, high-capacity backbone infrastructures in the world. This role focuses on designing, operating, and upgrading large-scale DWDM optical networks that interconnect global data centers and enable critical cloud services. You will work in a fast-paced engineering team responsible for ensuring reliability, performance, and continuous evolution of a multi-terabit optical transport network. The position offers hands-on exposure to cutting-edge optical technologies, complex troubleshooting, and large-scale network operations across a follow-the-sun model.

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• 5–8 years of experience in optical network engineering, operations, or support roles within telecom, ISP, or large-scale enterprise environments
  
• Strong hands-on experience with DWDM/optical transport systems and related optical networking technologies
  
• Proven ability to troubleshoot complex optical network issues and perform root cause analysis in high-availability environments
  
• Solid understanding of optical network planning, design, and modelling tools
  
• Experience working in 24/7 operational or on-call environments with production-impacting infrastructure
  
• Strong understanding of networking fundamentals and protocols such as BGP, OSPF, VLANs, TCP/IP, and DNS
  
• Ability to manage multiple priorities effectively, including change management and coordinated network upgrades
  
• Excellent communication skills with a strong ownership mindset and ability to work independently in high-pressure environments
  

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• Operate, support, and maintain large-scale DWDM optical transport networks connecting global data centres
  
• Perform network troubleshooting, diagnostics, and deep root cause analysis for complex optical system issues
  
• Plan, coordinate, and execute xcfaprz optical network device upgrades across distributed, multi-region environments
  
• Manage end-to-end change processes, ensuring safe and controlled implementation of network modifications
  
• Collaborate with internal teams, external vendors, and customers to schedule and deliver network changes and upgrades
  
• Monitor network performance and ensure high availability, reliability, and service continuity across all systems
  
• Contribute to optical network design discussions and infrastructure scaling initiatives
  
• Identify operational inefficiencies and drive automation or process improvements to enhance network performance and reliability