Built a greenfield POS administration application; designed ClickHouse analytics, 300 MB streaming exports, Cognito session handling and RabbitMQ integration. Contributed to EKS/EC2 cost optimization with an estimated recurring reduction of about USD 1,300 per month versus the original estimate. Also delivered client-specific Forward Deploy automation and modernization solutions.

Designed and implemented a React, .NET Lambda and Amazon Bedrock RAG prototype with tool calling. Identified a model-controlled identity trust-boundary flaw and helped evaluate the decision not to productionize the system because retrieval, security and cost-to-impact were unfavorable.

Developed APIs and microservices for a UK university-admission platform and created reusable dynamic model-mapping and OpenAPI tooling that reduced duplicated backend/frontend contracts.

Maintained a mission-critical public-safety Windows application used across more than 40 U.S. counties, covering complex legacy debugging, performance, refactoring and L2/L3 production support in a 3,000+ test environment.

Delivered ASP.NET Core, Angular and game-backend functionality across contract and part-time engagements, working with REST APIs, authentication, Redis and MongoDB.

Customized Moody's CreditLens for banking clients and improved selected reporting workflows by approximately 30-40% through SQL redesign, caching and parallel retrieval.