Aliaksandr Valialkin Email & Phone Number

San Francisco, California, Us

Building the best time series database and remote storage for Prometheus

Lewes, De, Us

- Successfully led building cost-effective ad serving infrastructure for high load (up to 300K qps per server).- Successfully led backend language transition from PHP+node.js to Go. This significantly reduced development, maintenance and operational costs.- Helped building fast and powerful ad analytics on top of ClickHouse.- Helped improving monitoring and logging infrastructure on top of Prometheus, ClickHouse and Grafana.

* Proposed and implemented new revenue sharing scheme with guaranteed gross profit margin (previous schema sometimes could lead to negative gross profit).* Reduced hosting costs per request by an order of magnitude.* Improved backend software stability from multiple crashes per hour to zero crashes/freezes and zero memory leaks per month.* Significantly optimized stats'​ processing speed.* Added detailed click stats, so every click could be filtered or grouped by a dozen of attributes on the fly.* Added missing ad serving features (filters, limits, smart requests' throttling).* Added detailed event logging and real-time backend state observability.

Kyiv, Ua

Newtown, Pa, Us

London, London, Gb

Minsk, By