Enterprise Architecture & Cloud Delivery

Enterprise-scale Azure architecture aligned to the Cloud Adoption Framework (CAF) Enterprise-Scale Landing Zone reference and the Well-Architected Framework (WAF) 5 pillars — delivered across healthcare, telecom, and M&E domains from legacy assessment through production cutover, IaC-first and Zero Trust throughout.

• Designed enterprise-scale landing zones (CAF) — management group hierarchy, platform vs workload subscription separation, and hub-spoke network topology with Azure Firewall, Bastion, and ExpressRoute
• Applied Well-Architected principles across production workloads — zone-redundant reliability, Zero Trust security, cost governance via tags/budgets, IaC-driven operational excellence, and auto-scale performance
• Owned continuous compliance stack — Azure Policy, Azure RBAC, Blueprints, Microsoft Defender for Cloud, Sentinel, and Cost Management
• Led legacy-to-cloud migrations including near-zero-downtime ERP cutovers using database log replication and Azure Site Recovery for cross-region HADR
• Built production-grade IBM Maximo 7.6 operations toolkit on Azure RHEL — eliminating tribal knowledge from day-2 operations
• Defined team structures, recruitment strategies, and offshore integration for global cloud engineering teams

Led modernisation of a pharmaceutical contract management platform from monolith to microservices, delivered a CI/CD pipeline covering four environments end-to-end, and drove cloud-native PoCs from concept to production on AWS.

• Architected and delivered pharmaceutical industry contract management system with SOA-structured microservices in Go
• Built and owned CI/CD automation covering 4 environments — reducing deployment cycle from days to hours
• Implemented Infrastructure as Code with Terraform for repeatable, auditable cloud provisioning
• Drove PoC-to-product pipeline: cloud observability, cost tooling, and internal developer platforms
• Cross-functional collaboration across Cloud Engineering, Product, and regional support teams

Specialist middleware engineer for large-scale financial and media integrations. Delivered SEPA payments middleware for Oracle Financial, CMS integration for The Washington Post, and post-production middleware services for Bank of Ireland.

• Designed and implemented SEPA payments integration flows on IBM Integration Bus and SOA Fusion Middleware
• Developed WebSphere automation scripts, SCA modules, and High Availability JAR maintenance
• Delivered Méthode CMS integration for The Washington Post — onsite in Washington D.C.
• Post-production middleware enhancement at Bank of Ireland, Dublin — onsite Sep–Oct 2013
• Trained teams on SEPA payments standards and SOA fusion middleware architecture

Led site reliability engineering for a multi-component eCommerce platform running IBM Sterling OMS, custom payment processing, and supply chain tooling. In parallel, drove enterprise big data and BI programmes — Hadoop, MongoDB, and QlikView — from source ingestion through curated marts to executive dashboards.

• Led cross-skilled SRE team for IBM Sterling OMS: payment processing, order management, returns UI, and MDM
• Designed data ingestion pipelines — Sqoop, Flume, Kafka streams and batch ETL — landing Sterling OMS, payments, supply chain and MDM data into HDFS
• Built Hadoop cluster + MongoDB workloads with Hive, Impala, HBase and Spark for large-scale enterprise analytics
• Delivered QlikView executive dashboards, operational reports and ad-hoc analytics on top of aggregated data marts and KPI cubes
• Supply Chain SME driving product design, 3rd-party vendor assessments, and end-to-end deployment strategy
• Managed leadership communication on priority incidents — full ownership across engineering and support teams