IP Network & Security Design and Implementation Engineer

ECS Resource Group; Dublin; Hybrid; EUR 85,000 - 120,000; Full time

Job summary

ECS Resource Group in Dublin seeks a Senior IP Network & Security Design and Implementation Engineer to architect and deploy secure, scalable network solutions across campus, WAN, data centres and security platforms.

The role is Dublin-based with on-site presence at the client’s city centre office at least two days per week, operating in a hybrid pattern and collaborating with security and cloud specialists. Strong Cisco, Fortinet and ADC expertise is required.

Qualifications

• Expertise in Cisco LAN/WAN and data centre architectures.
• Experience with SD-WAN and data centre interconnects.
• Strong Fortinet FortiGate security solutions and VPNs.
• Hands-on firewalling, load balancing and high availability.
• Ability to produce design documentation and deployment runbooks.

Responsibilities

• Design end-to-end IP network solutions across LAN/WAN and data centres.
• Plan secure implementations with routing, switching, firewalling and ADCs.
• Document high-level and low-level designs, migration plans and test strategies.
• Lead deployment activities and handover to operations.
• Collaborate with solution architects, project managers and security stakeholders.

Skills

Cisco LAN/WAN

LAN/WAN design

Fortinet security

Wireless networks

F5 BIG-IP

Automation (Python/Ansible)

Job description

The Senior IP Network & Security Design and Implementation Engineer is accountable for the end-to-end design and deployment of secure, scalable, and high-performing network solutions. These solutions span campus networks, WAN environments, data centres, wireless infrastructures, and security platforms.

This role is Dublin-based and requires on-site presence at the client’s city centre office at least two days per week.

Key Responsibilities

• Develop comprehensive technical documentation, including high-level and low-level designs, migration plans, test strategies and deployment procedures.
• Architect and deliver IP network solutions across LAN, WAN and data centre environments, ensuring effective segmentation and connectivity.
• Execute secure network implementations involving routing, switching, firewalling and application delivery, including work during out-of-hours windows where required.
• Take ownership of deployment stages such as configuration, system integration, cutover execution, validation and operational handover.
• Collaborate with cross-functional teams including solution architects, project managers, cloud specialists and security stakeholders.

Key Skills

• Strong expertise in Cisco networking, including Catalyst, Nexus, ACI, ISR/ASR and core protocols (BGP, OSPF, EIGRP, VLANs, VXLAN, QoS, HA).
• Proven experience designing and implementing LAN, WAN and data centre network architectures with exposure to SD-WAN.
• Advanced knowledge of Fortinet security solutions, including FortiGate firewalls, HA, segmentation, NAT, VPNs and centralised management tools.
• Solid experience with Cisco wireless networks, including Catalyst 9800 WLCs, RF design, surveys and secure authentication (802.1X, WPA3, ISE).
• Hands-on expertise with F5 BIG-IP (LTM, GTM, ASM, GSLB), including load balancing, SSL offload and resilient ADC design.
• Strong foundation in core networking (TCP/IP, DNS, DHCP, AAA) with skills in troubleshooting, automation (Python/Ansible) and technical documentation.

Further job details available upon application.