Independent IT Contractor — Donegal, Ireland

Sean Murphy builds
infrastructure that stays
up, secure & scalable.

Trading as SM Digital Infrastructure Limited — a one-person practice bringing 25+ years of enterprise architecture experience to hybrid cloud, virtualisation and disaster recovery engagements.

25+

Years delivering

24×7

Mission-critical

Gov / Fin

Sector experience

AVAILABLE FOR CONTRACT

Profile

Two decades of keeping critical systems running

Sean is a Senior Infrastructure Architect with over 25 years' experience delivering secure, scalable environments across private enterprise, government and financial services. His background spans hybrid infrastructure, virtualisation, storage and disaster recovery for organisations that cannot afford downtime.

Most recently, Sean led infrastructure modernisation for the Department of Defence / Defence Forces, delivering a private cloud platform built on Oracle Hyperconverged Infrastructure, VMware and Juniper networking. Earlier in his career he managed the UK's largest non-banking SAN estate for HMRC, and has also lectured in Linux systems at postgraduate level.

SM Digital Infrastructure Limited exists to bring that same depth — high- and low-level design, cost-conscious cloud transformation, and audit-ready operational governance — to organisations on a contract basis.

Certifications

Kubernetes & Cloud Native AssociateKCNA · 2026
AWS Certified Solutions ArchitectAssoc. · 2022
MSc Private Cloud Technologies1st Hons · 2019
EMC Proven Professional2015
VMware vSphere 6.02015

Areas of expertise

The stack Sean designs, secures and operates

Laid out the way an infrastructure architect actually thinks about it — from the compliance layer down to the wires.

Governance & Leadership / 01

Stakeholder management, ITIL and compliance. Aligning technical solutions with business needs and cost-reduction goals; audit readiness, lifecycle management and capacity planning; regulatory and corporate governance. Advanced presenter (Toastmasters) and former postgraduate lecturer.

Cloud & Virtualisation / 02

AWS, Kubernetes, Terraform, VMware, oVirt/KVM. High- and low-level design (HLD/LLD) for scalable enterprise environments; hybrid and private cloud transformation; Oracle Hyperconverged Infrastructure; Linux and Windows Server administration.

Storage & Data Protection / 03

Large-scale SAN, NAS and software-defined storage. Brocade and Cisco SAN, Ceph and Gluster, Fibre Channel, iSCSI and NFS across Fujitsu Eternus, EMC VMAX and NetApp. Backup and recovery via NetBackup, tape libraries and Infoscale clustering.

Network & Connectivity / 04

DNS/DHCP, VLAN, WAN, Cisco, Active Directory. Firewalls, Fibre Channel fabric design, and secure connectivity between on-premises and cloud environments, including AWS Direct Connect archive solutions into Glacier.

Experience

Selected career history

MAY 2022 — JUL 2025

Senior Infrastructure Architect

Fujitsu Services, Dublin — clients included Dept. of Defence/Defence Forces, Dept. of Transport, Tesco Mobile

Led stabilisation and modernisation of business-critical infrastructure hosting Oracle eBS and Personnel Management systems, delivering a private cloud built on Oracle HCI, VMware and Juniper networking.

MAR 2010 — MAY 2022

Customer Solutions Architect

Fujitsu Services, Derry — clients included HMRC, Scottish Water, Office for National Statistics

Managed the UK's largest non-banking SAN estate for HMRC; led end-to-end migrations to high-performance SAN/NAS/SDS and authored LLDs, technical implementation plans and BOMs for major transformations.

MAR 2019 — JUN 2019

Lecturer

Letterkenny Institute of Technology, Co. Donegal

Produced and delivered a 12-week Linux module to MSc students, including course supervision and assessment.

2003 — 2009

Senior AIX Systems Analyst

Affiliated Computer Services (now Xerox), Cork

Managed, supported and developed multiple customer UNIX environments.

Sean Murphy buildsinfrastructure that staysup, secure & scalable.