The ABT Special Projects team creates technical projects for Advertising, Search, and all of Yandex as a whole.

Our main projects:

• Unified identifier for logged-out users — used for analytics, A/B testing, and storing user advertising data across all of Yandex. Core functionality resides in L7 load balancers.
• Device parameter determination — used by all of Yandex for analytics, content personalization, and ad targeting. Core functionality resides in L7 load balancers.
• COFE A/B metric calculation framework — over 100 consumers, thousands of CPU cores, a unique product for analysts that allows easy description and efficient calculation of metrics on petabytes of data.

In our team, we are used to frequently conducting research, finding new ways to solve problems, and implementing them, as we directly impact advertising revenue and acceptance processes at Yandex.

What tasks await you

Unified identifier for logged-out users for advertising The quality of user identification directly impacts ad quality. By improving the stability of the identifier, we significantly increase advertising revenue. You will need to move the identifier to a separate microservice handling hundreds of thousands of requests per second, stable and reliable.

Accelerating A/B metric calculation to real-time Currently, we calculate metrics at the end of the day, but we need to learn to process petabytes of data in real time. This requires implementing a distributed, sharded calculation system that is stable, reliable, and easy to connect to.

A/B metric calculation infrastructure You will work on separating the infrastructure into independent components, organizing CI, testing, and contracts with consumers. We have over 100 consumer services that need to quickly and independently implement and roll out new product metrics for their services. Our task is to provide a simple and clear tool.

We expect you to

• Enjoy writing fast and reliable code in Python and C++
• Have worked with or want to start working with Big Data
• Are ready to delve into tasks at the intersection of different services
• Are interested in infrastructure
• Want to grow technically and in terms of product development