Position: Data Engineer (Experimentation Squad) to Preply
Company: Story Point
Experience required: 2y
English level: upper

You, as a part of Experimentation Squad, will develop systems that are used by all product squads in their daily work in the decision making process; tackle problems that occur in highly loaded systems, such as cross-experiment correlation, data consistency, event deduplication, etc.; design and monitor architecture in a way that will guarantee stability and reliability in the highly variative environment where 60+ developers deploy production 50+ times a day.

As a Data Engineer, you will:
- Establish credibility with the quality of the a/b testing system.
- Own Data pipelines and ensure Data consistency.
- Support & develop a/b testing interpretation tools.
- Collaborate with product teams to help them tackle technical issues with a/b testing.
- Develop new ways of a/b testing (SEO a/b testing, etc.).

What we are looking for:
- SQL hands-on experience.
- Knowledge of Python, at least 2+ years experience.
- Understanding basics of statistical analysis: p-value, null hypothesis, confidence interval - something you should be familiar with.
- A passion for analyzing data to inform decisions.
- Addiction to measuring and monitoring.
- Readiness to take responsibility of systems that directly impact company decision-making process.

Nice to have:
- Experience with a/b testing in production environments.
- AirFlow, Redshift, Kafka, Django.

What we offer:
- An opportunity for personal and professional growth, supported by high functioning teams, stellar investors and the exciting challenges that come with joining a company at the start of its growth trajectory.
- An environment free of bureaucracy and corporate constraints; a culture where your opinion is highly valued and appreciated.
- An open, collaborative, dynamic and international culture.
- A monthly allowance for self-development on Preply.com.
- A competitive financial package, with generous leave allowance and health insurance.