We're working with a technology-driven organisation operating highly resilient, performance-critical infrastructure where network reliability, speed and precision are fundamental to the business.

They are looking for an experienced Network Engineer to join their Dublin-based infrastructure team. This is a hands-on opportunity for someone who enjoys working in technically demanding environments, solving complex network problems and continuously improving performance and reliability.

The ideal candidate will come from a low-latency, high-performance or highly available technology environment - for example electronic trading, financial technology, telecommunications, high-frequency systems, data centres or another organisation where network performance is business-critical.

The Role

You'll be responsible for operating, maintaining and improving a sophisticated production network environment, working closely with infrastructure, SRE and data centre teams.

The role combines day-to-day operational ownership with project and engineering work, including network deployments, upgrades, troubleshooting, capacity planning and performance optimisation.

You'll also play an important role in ensuring the organisation's infrastructure is operationally ready ahead of key business activity across different time zones.

What You'll Be Doing

Operate, monitor and maintain resilient, high-performance production networks.
Configure and troubleshoot enterprise-grade switches, routers and firewalls.
Diagnose complex issues involving connectivity, routing, packet loss, latency and network performance.
Support network deployments, upgrades, migrations and infrastructure improvements.
Contribute to capacity planning and network performance optimisation.
Investigate and resolve operational incidents, taking ownership through to resolution.
Develop and improve network automation using Python, Ansible or similar technologies.
Work closely with Network Engineering, SRE, Data Centre, Infrastructure and external vendor teams.
Help improve network reliability, observability and operational processes.
Support infrastructure across geographically distributed environments and time zones.

What We're Looking For

5+ years' experience in network engineering or network operations.
Strong understanding of TCP/IP, BGP, OSPF, VLANs, VRFs, STP, routing and switching.
Hands-on experience working with production switches, routers and firewalls.
Strong troubleshooting skills across complex network environments.
Experience with network monitoring, incident response, upgrades and performance tuning.
Exposure to Python, Ansible or other network automation technologies.
A strong understanding of network performance and reliability.
Comfortable working in environments where latency, availability and operational resilience matter.
Strong communication skills and the ability to work effectively with infrastructure and engineering teams.
A proactive approach to identifying problems and improving the environment.

Why Join?

This is an opportunity to work on high-performance, business-critical infrastructure where network engineering has a direct impact on the organisation's technology platform.

You'll have the opportunity to work with experienced infrastructure engineers, take ownership of technically challenging problems and contribute to the continued evolution of a sophisticated network environment.

If you're a Network Engineer who has built your career in a low-latency or performance-critical environment and wants to work on complex infrastructure at scale, we'd be very interested in speaking with you.

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