Product Analyst/Data Analyst — Remote | Ostrovok!Tech

Our product teams launch new A/B experiments daily, and to enable them to test their hypotheses with maximum accuracy and speed, we are developing our own A/B platform. The goal is to make this platform not just a "calculator," but a full-fledged product. Therefore, the A/B testing team works not only on the platform and its features but also on the processes, methodologies, and culture surrounding experiments.

What you will do:

• Develop methodology for pricing experiments (switch-back, query level split) and help teams launch them;
• Build an A/B testing pipeline for the API business with hundreds of millions of requests per day;
• Implement CUPED in the auto-calculation service - write code in Python, maintain Airflow DAG;
• Develop tools for experiment design;
• Research best practices and find ways to speed up tests;
• Validate experiment designs and post-analyses, understand complex cases of CI approaches.

You are a good fit if:

• 2+ years in analytics, including hands-on A/B testing experience (20+ tests per year) - design, launch, analysis - it would be great if you mention in your cover letter how many tests you conducted in your last role;
• You confidently write code in Python (not just notebooks) and understand what a Docker container is;
• You can readily explain CUPED and understand the advantages of the Bayesian approach;
• You can optimize SQL queries that run on billions of rows without lagging (using LLM is sufficient);
• Conversational English - B1 or higher;
• You use LLM assistants in your work (Claude Code, ChatGPT, etc.).