Oliver James

<ul>
<li>12-month initial contract</li>
<li>Day rate</li>
<li>Hybrid in Dublin</li>
</ul>
Role Overview
The role involves working with application teams, architects, engineers and stakeholders to gather requirements, develop technical designs and produce Technical Architecture Documents (TADs).
Overall Objective
To deliver and support secure, reliable and high-performing infrastructure solutions, with particular emphasis on F5 traffic management, DNS and networking, while meeting organisational architecture and operational standard.
Key Responsibilities
<ul>
<li>Design, implement and support secure, scalable internet infrastructure and middleware solutions.</li>
<li>Configure and troubleshoot F5 technologies, including Global Traffic Managers (GTM) and Local Traffic Managers (LTM).</li>
<li>Manage and troubleshoot DNS, networking and traffic management solutions.</li>
<li>Gather stakeholder requirements and translate them into high-level technical designs.</li>
<li>Produce and maintain TADs, infrastructure diagrams, logical flows and technical documentation using Microsoft Visio or similar tools.</li>
<li>Troubleshoot infrastructure issues and perform performance tuning, capacity planning and configuration management.</li>
<li>Monitor production environments to maintain system stability, availability and performance.</li>
<li>Evaluate emerging technologies and contribute to infrastructure projects and implementations.</li>
</ul>
Technical Skills And Experience
<ul>
<li>Strong, hands-on experience with F5 GTM and LTM, DNS and networking is essential. Candidates must demonstrate practical implementation, configuration and troubleshooting experience.</li>
<li>Strong understanding of networking, operating systems, web servers, application servers and web middleware.</li>
<li>Experience in internet infrastructure design and/or web administration.</li>
<li>Advanced knowledge of load balancers and Web Application Firewalls (WAFs).</li>
<li>Working knowledge of cloud and database technologies.</li>
<li>Understanding of Zero Trust Architecture and network micro-segmentation.</li>
<li>Experience with YAML-based deployments.</li>
<li>Experience using Microsoft Visio or similar tools for infrastructure design and documentation.</li>
<li>Strong troubleshooting, analytical and technical documentation skills.</li>
</ul>
Personal Attributes
<ul>
<li>Proactive, detail-oriented and results-driven, with the ability to work independently under pressure.</li>
<li>Strong communication, collaboration and stakeholder management skills.</li>
<li>Able to manage multiple priorities and work across geographically distributed teams.</li>
<li>Quick to learn new technologies and demonstrate initiative and ownership.</li>
</ul>
Typical Day and Stakeholder Interaction
The role combines hands-on infrastructure engineering, design and operational support. Activities include configuring and troubleshooting F5 GTM/LTM, managing DNS and networking, developing architecture designs, resolving performance issues and collaborating with application, infrastructure and operational teams.
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Lead Systems Platform Architect / Infrastructure Architect – F5

Lead Systems Platform Architect / Infrastructure Architect – F5

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