network Engineer Optical (DWDM)

GCS Recruitment; Ireland; On-site; EUR 65,000 - 90,000; Full time

Job summary

GCS Recruitment is seeking a Network Engineer - Optical (DWDM) to join a Dublin-based team supporting mission-critical DWDM optical transport networks. You will operate and maintain large-scale fibre networks, manage events, upgrades, and ensure high availability in a production environment.

The ideal candidate has 3+ years in DWDM or optical transport, understands ROADM, transponders, and fibre infrastructure, and can communicate effectively with internal and external stakeholders in a

Qualifications

• 3+ years in DWDM or Optical Transport Networks
• Strong troubleshooting and incident management capabilities
• Experience in Network Operations, NOC, Telecoms, ISP, Carrier, or Optical Operations environments
• Excellent communication and stakeholder management skills

Responsibilities

• Operate and support DWDM optical transport networks over fibre infrastructure
• Manage network events including fibre cuts, signal degradation, restoration, and rerouting activities
• Perform software upgrades on optical networking platforms within structured maintenance windows
• Troubleshoot optical transport issues and maintain network performance and availability
• Coordinate with internal engineering teams and external vendors
• Support change-managed network operations while ensuring minimal service impact

Skills

DWDM

Optical Transport

Network Operations

Troubleshooting

Incident Management

Change Management

Fibre Infrastructure

Tools

Ciena

Cisco

Infinera

Nokia

Job description

Network Engineer - Optical (DWDM)

Dublin, Ireland | Permanent | Full-Time

Join a Global Infrastructure Team Supporting Mission-Critical Networks

We are seeking a Network Engineer - Optical (DWDM) to join a highly skilled network operations team supporting large-scale optical transport infrastructure. This is an exciting opportunity to work on complex, high-capacity networks that connect critical digital services across multiple regions.

As part of the team, you will play a key role in maintaining network reliability, managing optical transport systems, supporting upgrades, and ensuring seamless connectivity across a large-scale production environment.

What You'll Be Doing

• Operate and support DWDM optical transport networks over fibre infrastructure
• Manage network events including fibre cuts, signal degradation, restoration, and rerouting activities
• Perform software upgrades on optical networking platforms within structured maintenance windows
• Troubleshoot optical transport issues and maintain network performance and availability
• Coordinate with internal engineering teams and external vendors
• Support change-managed network operations while ensuring minimal service impact

What We're Looking For

• 3+ years' experience in DWDM or Optical Transport Networks
• Strong understanding of DWDM, ROADM, transponders, amplifiers, mux/demux, and fibre infrastructure
• Experience within Network Operations, NOC, Telecoms, ISP, Carrier, or Optical Operations environments
• Strong troubleshooting and incident management capabilities
• Experience working within structured change-management processesExcellent communication and stakeholder management skills

Technology Environment

• DWDM Optical Networks
• Optical Fibre Infrastructure
• Multi-vendor Optical Platforms
• Ciena
• Cisco
• Infinera
• Nokia

Why Apply?

• Work on large-scale, business-critical networking infrastructure
• Join a collaborative and highly technical engineering environment
• Gain exposure to advanced optical networking technologies
• Excellent learning, development, and career progression opportunities
• Fast and streamlined interview process

Role Details

Location: Dublin, Ireland
Job Type: Permanent, Full-Time
Working Model: Office-based with occasional flexibility

If you're passionate about optical networking and want to work in a highly technical environment supporting critical network infrastructure, we'd love to hear from you.