At Smartek Life, I developed a Node.js, Next.js, and PostgreSQL CRM integrated with Meta, WhatsApp, and Pipedrive. I tested its lead capture in shadow mode against the previous system until both matched 100%.
I planned and executed a phased migration that replaced six third-party tools, eliminating a single point of failure and reducing tool costs by 70%. I also rebuilt the ERP into a system used daily by four teams.
I developed an LLM-powered voice command system that reached 95% interpretation accuracy, and integrated Amazon Alexa using AWS Lambda and S3. I also introduced observability across the app, API, and hardware, reducing root-cause analysis from days to minutes and production errors by 35%.
In my personal open-source project Yu-book, I’m building an AI assistant for private knowledge bases, with configurable agents, an MCP server, and cost controls. The project includes 440 integration tests against a real PostgreSQL instance.
