At Digikala, I traced a live cache-inconsistency fault to MySQL isolation levels across 10+ production databases and helped cut main database CPU usage by 40%. I also built a stock-management microservice serving 50,000+ requests per second.
I rewrote half of the legacy seller-side service and integrated it with a React front end over REST. I also redesigned buy-box selection for 100M+ events per day and optimised auto-pricing and queue processing.
As Engineering Manager & Technical Lead at Digikala, I led a team of up to five engineers, delivered MySQL training to approximately 200 engineers, and built an LLM-powered seller chatbot that cut process time 20x. Earlier at Mohaymen, I implemented distributed request tracing and built a streaming C#/.NET CSV parser.

