Back-End Engineer(Experimentation Squad)
Liberec, Czech Republic
před 3 dny
source : Just Join IT

Kafka (nice to have)

Airflow (nice to have)

Python (master)

Join our Experimentation Squad!

We are currently looking for a Back-End Python (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 where 100+ developers deploy production 50+ times a day.

    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.

    Visit our Tech Radar to learn more about the technologies we use at Preply.

    As a part of Experimentation squad, 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.).
  • Integrate with 3rd party providers.
  • What we are looking for :

  • Knowledge of Python, at least 4+ years experience.
  • Ability to lead technical solutions : collect requirements, define solutions and split tasks among other engineers.
  • 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.
  • Readiness to take responsibility of systems that directly impact company decision making process.
  • Nice to haves :

  • 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
  • A competitive financial package, with generous leave allowance and health insurance.
  • Stock options.
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