Dunnes Stores Tech Stack

Irish retail chain modernizing legacy systems with cloud-native data infrastructure

Retail Dublin, . 10,001+ employees Founded 1944 Privately Held

Dunnes Stores is a 10,000+ person retail operation actively migrating from mainframe (AS/400) and Oracle monoliths toward Microsoft cloud (Fabric, Synapse, Data Factory). The hiring surge in infrastructure, security, and data roles—concentrated at senior and lead levels—reflects a major platform modernization effort. Active projects span cloud security posture management, enterprise data platform build, and regulatory automation, while pain points center on legacy system modernization and cost performance—a classic large-retailer infrastructure refactor.

Tech Stack 29 technologies

Core StackAzure Data Factory Power BI Cisco Linux PL/SQL Google Analytics Microsoft Fabric Azure Synapse SQL AS/400 Oracle EBS Oracle Retail Oracle HCM Cloud Oracle Payroll Oracle Forms Oracle Reports Oracle APEX XML BI Publisher UKG Windows MITRE ATT&CK NIST Excel

AdoptingZendesk Intercom Salesforce WMS TMS

What Dunnes Stores Is Building

◆Challenges

Improving availability and cost performance
Modernizing technology landscape
Security and compliance
Modernising legacy enterprise systems
Driving efficiencies and cost savings
Automation and digital reporting
Increasing digital legislation demands
Improving product quality
Maintaining data platform performance
Automating data pipelines

▲Active Projects

New enterprise data platform
Architecture review board
Cloud security posture management reviews
Product launches and seasonal plans
Tax automation and governance
Data-led decision making
Country-by-country reporting
New regulatory and e-legislation projects
Digital legislation and auditing projects
Itx registrations and certifications

Hiring Activity

Accelerating30 roles · 15 in 30d

Department

Finance

Engineering

Security

Data

Logistics

Sales

Buying

Seniority

Senior

Lead

Manager

Mid

Notable leadership hires: Infrastructure Head, Head of Infrastructure

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About Dunnes Stores

Dunnes Stores is Ireland's largest privately held retailer, operating across fashion, homewares, and grocery with over 10,000 employees. The company sells directly to consumers through physical and digital channels, competing on value and product quality. Operationally, they span supply chain, buying, HR, and finance functions at scale. Tech-wise, the business still runs on mature on-premise systems (AS/400, Oracle EBS, Oracle HCM) but is in active transition to Microsoft Azure for analytics and data warehousing.

HeadquartersDublin, .

Company Size10,001+ employees

Founded1944

Hiring MarketsIreland, United Kingdom

Frequently Asked Questions

What tech stack does Dunnes Stores use?

Dunnes runs Oracle EBS (financials), AS/400 (legacy core), Oracle HCM Cloud (HR), and is transitioning to Microsoft Fabric, Azure Synapse, and Azure Data Factory for analytics and data platforms. They use Power BI for reporting and Google Analytics for web properties.

What is Dunnes Stores working on?

Key initiatives include a new enterprise data platform, cloud security posture management, modernization of legacy systems, tax automation, regulatory compliance automation, and data-led decision-making frameworks. All point toward cloud migration and operational modernization.