Infrastructure Manager

Harvey Nash; Dublin; Hybrid; EUR 65,000 - 85,000; Full time

Job summary

Harvey Nash is seeking an experienced Infrastructure Manager to own day-to-day IT at the Dublin site, covering on-premises and Azure cloud. You will run end-user computing, networks, storage, and security while collaborating with the IT leadership.

The role requires 3+ years in infrastructure, strong troubleshooting ability, and experience with ITSM processes and external vendors. Occasional UK travel and remote support across ROI/UK regions are included.

Qualifications

• Minimum 3 years' experience in systems administration or IT infrastructure support.
• Strong experience across on-premise and public cloud environments, ideally Azure.
• Demonstrable experience managing business stakeholders and third-party suppliers.
• Strong troubleshooting skills, with the ability to diagnose complex technical problems.

Responsibilities

• Administer and maintain the IT infrastructure across the Dublin site (switches, firewalls, access points, computers, storage).
• Support BAU operations and key technology projects in collaboration with the Head of IT Infrastructure.
• Maintain and improve cybersecurity, IAM controls, and service monitoring.
• Document infrastructure changes and procedures; support external audits and risk management.

Skills

Azure

Windows Server

Active Directory

Troubleshooting

ITSM

Stakeholder management

Tools

VMware

Hyper-V

Microsoft 365

Job description

My client is a well-established UK-based mission-critical infrastructure and services business with a strong presence across the UK and Ireland.

The business provides essential services and technology solutions to customers across a range of sectors, supported by a geographically distributed Technology team.

This is an excellent opportunity for an experienced Infrastructure Manager / Systems Administrator to join a wider Technology function and take ownership of the day-to-day IT environment across Ireland, with a particular focus on the Dublin site.

About the Role

• We are looking for an experienced Infrastructure Manager with a strong background in both traditional on-premise IT infrastructure and public cloud environments, ideally Microsoft Azure.
• You will be responsible for the day-to-day management and support of the IT environment, including end-user computing, telephony, storage, networking, monitoring and collaboration tools.
• You will work closely with the Head of IT Infrastructure and wider Technology team, supporting both BAU operations and key technology projects.
• The role will primarily focus on the Dublin site, with occasional travel to other sites across Ireland as required, alongside remote support for wider UK locations.

Key Responsibilities

Infrastructure Management

• Administer and maintain the IT infrastructure across the Dublin site, including switches, firewalls, access points, computers and storage.
• Work closely with application managers and infrastructure leadership to ensure key CRM, service and finance systems remain highly available.
• Support the administration and maintenance of wider group cybersecurity technologies, including EDR, web filtering, SIEM, email filtering, backup and MDM solutions.
• Monitor and optimise both on-premise infrastructure and cloud environments.
• Manage relationships with external technology and service providers, conducting regular reviews to ensure agreed service levels are consistently met or exceeded.

Security & Compliance

• Ensure infrastructure is regularly patched and vulnerabilities are identified, assessed and remediated within agreed timescales.
• Work with the wider IT Infrastructure team to maintain and improve the organisation's overall cybersecurity posture.
• Regularly review Active Directory, Entra ID and other identity platforms to ensure appropriate RBAC and access controls are maintained.
• Support wider security, compliance and risk management initiatives.

Documentation & Reporting

• Maintain accurate and comprehensive documentation covering on-premise and cloud infrastructure, systems and operating procedures.
• Work with the Head of IT Infrastructure to ensure quarterly system reviews and annual external audits are completed effectively and on time.
• Maintain clear records of infrastructure changes, risks, issues and improvement activities.
• Provide hands-on technical support primarily to the Dublin site, with occasional support across other ROI locations.
• Provide remote technical support to wider UK sites where required.
• Work closely with the Head of IT Infrastructure on key technology projects and BAU activities.
• Participate in regular Service Desk and Infrastructure team meetings.
• Participate in the remote weekend on-call rota, currently approximately 1 in 6, providing support for BAU break/fix issues.
• Identify opportunities to improve technology processes, service quality and cost efficiency.
• Develop and implement improvement initiatives that enhance the overall technology service.

Experience & Skills

• Minimum 3 years' experience in systems administration or IT infrastructure support.
• Strong experience across both on-premise and public cloud environments, ideally Azure.
• Demonstrable experience managing business stakeholders and third-party suppliers.
• Strong troubleshooting skills, with the ability to diagnose complex technical problems and implement effective solutions.
• Experience working within a structured IT service management environment.

Technical Skills

• Windows Server 2016 / 2019 / 2022
• Active Directory
• DNS and DHCP
• File and Print Services
• Remote Desktop Services
• Hyper-V and/or VMware
• Azure VMs, storage, resource groups, IaaS and PaaS
• Microsoft 365, including SharePoint and OneDrive
• Web filtering and email security
• Patch and vulnerability management
• MFA / Microsoft Authenticator
• Networking, firewalls, switches and wireless infrastructure

Certifications

• MCSE: Core Infrastructure or MCSE: Productivity desirable