Tech Lead (Python) Experimentation Squad Offline

We are currently looking for a Tech lead in Experimentation Squad to join our Platform tribe.

Here in Preply we a/b test most of our changes on production, both product and technical before scaling it to all customers. Platform tribe owns the whole infrastructure that is used to make those business-vital decisions.

You, as a part of Experimentation Squad, will:

- Develop systems that are used by all product and platform 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.

We work in small teams, thus you will be able to influence system design and contribute a lot in the company's growth, also we promote self-direction to work on meaningful projects, while we also strive to create an environment that provides the support and mentorship needed to learn and grow.

Responsibilities:

- Establish credibility with the quality of the a/b testing system.

- Develop new ways of a/b testing (SEO a/b testing, etc.).

- Own Data pipelines and ensure Data consistency.

- Support & develop a/b testing interpretation tools.

- Integrate with 3rd party providers.

- Collaborate with product teams to help them tackle technical issues with a/b testing.

What we are looking for:

- Strong knowledge of Python, at least 2+ years experience.

- SQL hands-on 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.

- High code-testing standards.

- Readiness to take responsibility of systems that directly impact company decision making process.

- Minimum B2 English level is a must.

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.