Alexander Egurnov

A back-end system that collected, enriched, and forwarded logs from thousands of application containers to an Elasticsearch cluster. It allowed the users of the cloud platform to view and analyze logs from their applications in a convenient and powerful environment. This subsystem provided one of the key value-added features offered by the cloud platform.

I took over the project at an early proof-of-concept stage. I turned it into a production-ready service deployed in multiple public and private cloud environments, forwarding hundreds of thousands of messages per second.

A back-end advertisement exchange software, written in Go, serving the needs of an ad tech startup. It was a highly customized and very configurable tool that supported the company's main business.

I led several efforts that improved its maintainability, stability, and speed. My team and I developed unit and end-to-end tests, built logging and monitoring systems, prepared multiple infrastructure migrations, and automated continuous integration and deployment processes.

As a result, the number of bugs decreased significantly, reliability (as measured by pager duty events) increased, and development speed and maintainability improved. All this allowed us to confidently scale the business by order of magnitude without major disruptions.