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Senior IT Security & Network Engineer / Architect 12-Month Contract | Dublin
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Hyphen —Dublin, County Dublin
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- €600–€700 a month
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Sony Interactive Entertainment —Dublin, County Dublin
- €69,500–€104,300 a year
- Hybrid work
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Lead Platform Architect - EA Experiences
Electronic Arts —Galway, County Galway
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Senior Software Architect (100% Remote - Worldwide)
Tether Operations Limited —Dublin, County Dublin
- Full-time
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- English
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2d
Software Engineer - Frontend/Full Stack
PlayStation Global —Dublin, County Dublin
- €69,500–€104,300 a year
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Cyber Security Architect
PFH Technology Group —Remote
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Principal Cybersecurity Architect
JPMorganChase —DUBLIN 2, County Dublin
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DC Architect
Tata Consultancy Services —Dublin, County Dublin
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Senior Network Development Engineer, GCNA
Amazon Development Centre Ireland Limited —Dublin, County Dublin
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VMware Architect - SDDC
Triangle Computer Services —Dublin, County Dublin
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Senior Solutions Architect
Asana —Dublin, County Dublin
- €155,000–€175,000 a year
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- Presentation skills
- JavaScript
- Work from home
Quick apply
Senior Software Engineer / Web Developer (AEM)
Sony Interactive Entertainment —Dublin, County Dublin
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- Hybrid work
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Network Support Engineer, Aruba
Kanari —Dublin, County Dublin
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Operational Technology (OT) Security Architect
Accenture —Dublin, County Dublin
- Full-time
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Data Architect
Deloitte —Dublin, County Dublin
- €90,000 a year
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Senior Software Engineer / Web Developer (AEM)
PlayStation Global —Dublin, County Dublin
- €87,800–€131,800 a year
- Computer Science
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Senior IT Security & Network Engineer / Architect 12-Month Contract | Dublin

Hadfield Green
DUBLIN 2, County Dublin

Apply Now

Job details

Fixed term

Qualifications

Ansible
Load balancing
LAN
Firewall
Network protocols
REST
WAN
Network architecture
TCP/IP
Communication skills
Python
VPN

Full job description

Hadfield Green are partnering on a fantastic opportunity for a Senior IT Security & Network Engineer / Architect to join a critical cyber security and network services environment on a 12-month contract.

This is a senior technical role for someone who can bridge Cyber Security, Network Operations, and Architecture, leading security-driven network initiatives from design through to delivery.

You’ll act as a key technical lead across complex network and security projects, helping shape resilient, scalable, and secure infrastructure that supports business continuity and operational excellence.

The role

Lead cyber security projects delivering network-related security initiatives across a critical 24×7 operations network.
Design and implement best-practice network architectures focused on scalability, resilience, and security.
Take ownership of enterprise datacentre network design, including ACI fabric, tenants, VRFs, bridge domains, and EPGs.
Configure and manage Cisco NGFW features including IPS, Security Intelligence, Portscan Detection, and Encrypted Visibility Engine.
Manage firewall lifecycle activity including upgrades, policy optimisation, and health monitoring.
Develop secure segmentation strategies aligned to Zero Trust principles.
Use automation tools such as Python, Ansible, and REST APIs.
Design and optimise application delivery using Citrix NetScaler, including load balancing, WAF, content switching, and traffic steering.
Support high-availability and disaster-recovery planning for critical services.
Collaborate with application and infrastructure teams to ensure performance, resilience, and secure traffic flows.
Provide third-line technical support and mentor second-line staff.
Monitor performance and support continuous improvement across key network services.

What we’re looking for

CCIE qualification essential
CISSP qualification advantageous
Strong knowledge of networking protocols and topologies
Experience in security architecture design and implementation
Excellent understanding of TCP/IP, Cisco firewalls, ACI networks, LAN, WAN, and VPN systems
Familiarity with Identity & Access Management (I&AM) and cyber security
Knowledge of threat management and vulnerability assessment
Good working knowledge of ITIL, change management, and continual improvement
Strong communication and documentation skills

What’s on offer

12-month contract
Senior-level technical ownership
A high-impact security and network architecture remit
The chance to work on critical infrastructure with real scale and visibility

If you’re a senior security and network professional looking for your next contract move, this is a standout opportunity.

Interested? Get in touch with Hadfield Green to find out more.

Apply Now

Refine Your Search

network architect jobs

Senior IT Security & Network Engineer / Architect 12-Month Contract | Dublin

Enterprise Metadata Architect

Senior Associate, IT, Network Engineer (Fixed Term Contract - 12 Month)

Architect

Network Architect

Software Engineer - Frontend/Full Stack

Lead Platform Architect - EA Experiences

Senior Software Architect (100% Remote - Worldwide)

Software Engineer - Frontend/Full Stack

Cyber Security Architect

Principal Cybersecurity Architect

DC Architect

Senior Network Development Engineer, GCNA

VMware Architect - SDDC

Senior Solutions Architect

Senior Software Engineer / Web Developer (AEM)

Network Support Engineer, Aruba

Operational Technology (OT) Security Architect

Data Architect

Senior Software Engineer / Web Developer (AEM)

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