Architecture owner for eCommerce, POS, inventory and integration platforms supporting 140+ retail locations and approximately 14,000 SKUs per store.
Designed and implemented REST and GraphQL APIs for order fulfilment, inventory management, POS reconciliation and third-party integrations.
Architected systems handling millions of daily API requests; reduced core API P95 latency to below 120 ms and maintained >99.9% availability for critical order and inventory workflows.
Reduced failure-related incidents by approximately 60–70% by decoupling webhooks, stock updates and POS events with AWS SQS and asynchronous processing.
Built high-throughput inventory synchronisation services and introduced failure-aware patterns including request isolation, backpressure and graceful degradation.
Delivered headless and serverless architectures across AWS, Cloudflare, Vercel, Contentful and Shopify while modernising legacy Magento integrations without service disruption.
Defined API contracts, integration standards and engineering approaches; collaborated with product and operations in Agile/Scrum delivery.
Owned architecture for a greenfield healthcare platform with responsibility for sensitive-data protection, system migration and compliance-oriented design.
Integrated application services with Azure authentication and SharePoint-based patient records, including secure document upload and retrieval workflows.
Designed encryption models for sensitive healthcare information at rest and in transit, with strict access control, auditability and data-boundary enforcement.
Led migration and redesign work across C#/PHP and SQL-based systems, improving maintainability and deployment simplicity.
Designed greenfield financial, data-intensive and distributed systems, including backend APIs on hardened Linux environments.
Developed PostgreSQL extensions in Rust and financial/analytical pipelines using Python and Rust.
Implemented Kafka-based high-throughput messaging, structured logging and monitoring, cryptographic signing using SHA-256/ED25519 and Protocol Buffers.
Built security-sensitive platform capabilities including encrypted customer data, wallets, tokens and private-ledger components.
Delivered Magento architecture, custom integrations and security hardening for medium-to-large eCommerce deployments.
Led and reviewed offshore engineering work; performed OWASP-oriented security reviews and server hardening; contributed to Android/iOS system architecture.