System and Infrastructure Administrator & Project Lead

Forvis Mazars; Dublin; On-site; EUR 75,000 - 110,000; Full time

Job summary

Forvis Mazars is seeking an experienced System and Infrastructure Administrator & Project Lead to maintain our core on‑premises IT and drive the hybrid cloud transition. The role involves managing 16+ VMware hosts, ~200 servers, and 1,000 users, deploying secure solutions, and leading infrastructure projects in collaboration with global IT and MSP partners.

The ideal candidate has 5+ years in Windows administration, strong VMware and Azure knowledge, and familiarity with project management

Qualifications

• 5+ years of Windows Systems Administration in an enterprise environment.
• Experience with VMware ESXi and vCenter (vSphere 8 or newer).
• Knowledge of Windows Server 2016+ and Active Directory.

Responsibilities

• Maintain and optimize core on-premises environment powered by VMware and Windows Server.
• Manage Domain-based Active Directory, DNS, DHCP, and GPOs.
• Escalation point for complex infrastructure and server issues.
• Own end-to-end lifecycle of infrastructure projects from scoping to documentation.
• Translate milestones and risks into clear leadership-level documents.
• Follow ISO27001 framework.

Skills

Windows Systems Administration

VMware ESXi

vCenter

Windows Server 2016+

Active Directory

DNS

DHCP

Azure (IaaS/PaaS)

PowerShell

AZ-104

Parallels RAS

Tools

VMware vSphere 8

Windows Server 2019

Job description

Our people are ambassadors and leaders and have a bold entrepreneurial spirit to shape the future of our industry and the communities within which we serve. We empower and develop our teams to become professionals of the highest calibre in technical and client excellence. Our people first approach offers our teams a caring work environment which promotes belonging and inclusivity of all cultures and perspectives.

The Position

We are looking for an experienced System and Infrastructure Administrator & Project Lead to maintain and optimize our core on-premises IT infrastructure while spearheading our transition to a hybrid cloud model. In this role, you will be part of a team managing a robust environment featuring 16+ VMware hosts and approximately 200 servers supporting 1,000 users. You will deploy new solutions to keep our environment secure, lead critical infrastructure projects, and collaborate closely with Forvis Mazars global IT and our local Managed Service Providers (MSPs).

Key Responsibilities

• Maintain and optimize our core on-premises environment powered by VMware vSphere 8 and Windows Server 2019.
• Manage a domain-based Active Directory environment, ensuring robust Group Policy Objects (GPOs), DNS, DHCP, and secure access management.
• Act as the final point of escalation for complex infrastructure and server-level technical issues.
• Own the end-to-end lifecycle of infrastructure projects — from scoping and risk assessment to implementation and documentation.
• Translate technical milestones and risks into clear documentation for business leadership and non-technical stakeholders.
• Follow ISO27001 framework

Ideal Candidate

• 5+ years of experience in Windows Systems Administration in an enterprise environment (1,000+ users preferred).
• Experience with VMware ESXi and vCenter (specifically vSphere 8 or recent versions).
• Knowledge of Windows Server 2016+ (2019 preferred), Active Directory, and other standard Windows systems like DNS, DHCP
• Solid understanding of core Azure concepts (IaaS, PaaS, resource groups, virtual networking, storages, etc.
• Familiarity with project management frameworks (e.g., Agile, Prince2, or standard PMP principles)
• Good knowledge of PowerShell scripting.
• Microsoft Azure Administrator Associate (AZ-104) (highly recommended)
• Parallels RAS Server knowledge is a plus
• Other certs related to IT or project management will be a bonus

Don’t wait. Act.

Please Note: Forvis Mazars is an Equal Opportunities Employer.In applying for a role with us, you consent that Forvis Mazars will process your personal data forthe purpose of handling your application.Forvis Mazars endeavours to recruit and fill vacancies directly. However, at times when we do need to engage with agencies, Forvis Mazars operates within a preferred supplier list (PSL) and only work and partner with recruitment suppliers where our agreed contractual terms are in place.If unsolicited CVs are received from agencies, we will not be liable for payment of introduction fees. Thank you for your co-operation.