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The problem

A multinational financial services firm needed to migrate their mission-critical SAP HANA environment to AWS to improve scalability, reduce costs, and enhance disaster recovery — with zero tolerance for downtime.

My approach

Designed a comprehensive migration strategy including AWS Transit Gateway architecture for secure multi-region connectivity, multi-AZ deployment for high availability, Terraform-based Infrastructure as Code for environment standardisation, and a zero-downtime cutover using AWS Database Migration Service.

The problem

A scale-up was manually provisioning AWS infrastructure across 20+ environments, causing configuration drift, inconsistent environments, and slow, error-prone releases.

My approach

Developed comprehensive Terraform modules for standardised AWS infrastructure deployment. Implemented remote state in S3 with DynamoDB locking, created workspace-based environment separation, and integrated IaC into the CI/CD pipeline for automated provisioning.

The problem

A multi-tier enterprise application needed a complete security overhaul to meet strict compliance requirements and pass an upcoming regulatory audit.

My approach

Architected and implemented a comprehensive Zero Trust security model using AWS IAM with least-privilege role design, Security Groups, NACLs, and AWS Control Tower. Implemented continuous compliance monitoring and automated remediation for policy violations.

The problem

An e-commerce platform needed to decompose a monolithic application and modernise deployments to handle seasonal traffic spikes and accelerate feature delivery.

My approach

Designed and implemented containerised microservices architecture using Docker and AWS ECS. Built automated CI/CD pipelines with blue-green deployments, automated testing integration, and comprehensive monitoring with CloudWatch.

The problem

A company running aging on-premises Oracle databases needed to migrate to a managed cloud solution with improved performance, high availability, and reduced licensing costs.

My approach

Used AWS Database Migration Service for a near-zero-downtime migration to Amazon RDS for PostgreSQL. Implemented Multi-AZ architecture with read replicas, automated backups, and performance monitoring dashboards.

The problem

A growing enterprise had all workloads in a single AWS account with no environment separation, creating security risk, cost visibility problems, and compliance gaps.

My approach

Designed and implemented a multi-account AWS architecture using AWS Organizations, Control Tower for governance, and Transit Gateway for secure inter-account connectivity. Built a Landing Zone with guardrails and automated account vending.

The problem

A development team was using legacy, manual deployment processes that took days to complete, with no automated testing and frequent rollback failures causing production outages.

My approach

Transformed legacy deployment processes into a modern CI/CD pipeline using AWS CodePipeline, CodeBuild, and CodeDeploy. Added automated unit and integration tests, environment promotion gates, and Slack notifications for deployment events.

The problem

A SaaS company had no cost governance, accumulating unused resources across accounts, and no visibility into per-service spend — with a rapidly growing cloud bill.

My approach

Implemented a comprehensive cost optimisation strategy including resource right-sizing across EC2 and RDS, Reserved Instances and Savings Plans purchase strategy, automated EC2 start/stop schedules for non-production environments, and per-team cost tagging with AWS Budgets alerting.

The problem

A financial services client had zero disaster recovery capability. A single regional AWS outage would bring down all services with no tested recovery path.

My approach

Designed and implemented a cross-region DR solution with automated failover using Route 53 health checks, cross-region RDS replication, S3 cross-region replication, and a full DR runbook. Scheduled and executed quarterly failover tests.