About the role

Data Scientist working within Polarsteps' growth team, driving experimentation and data-backed decisions. Collaborating with product and marketing for scalable insights and recommendations.

Responsibilities

Partner with product, growth, and marketing teams to translate business questions into well-designed experiments with clear success criteria.
Design, run, and analyze experiments across product and marketing to help Polarsteps make confident, data-backed decisions at scale.
Advance our experimentation methodology (introducing techniques like SPRT, stratified sampling, and variance reduction) to help us learn faster and ship with more confidence.
Build and maintain the statistical frameworks and tooling that power our experimentation practice, from sample size calculators to automated analysis pipelines.
Present experiment results and strategic insights to senior stakeholders, turning statistical findings into clear, actionable recommendations.

5+ years of related industry experience in the data science and experimentation domain
Worked with B2C native mobile apps
Expertise in SQL, familiarity with Python, knowledge cloud data environments (e.g. AWS, Clickhouse etc.)
Hands-on experience building and scaling experimentation practices, working with product managers or marketing department and have worked with statistical methods (causal inference, multi-arm bandits. reinforcement learning, synthetic data and experimentation, non-parametric methods, etc.,) in start-ups or scale-ups
Are familiar with product analytics and reporting tools (e.g., Mixpanel, Amplitude, Appsflyer, Adjust, Looker, Meta Base etc.).
Ability to communicate and explain data science and experimentation concepts to diverse audiences and craft a compelling story.
Intellectually curious, creative, and diligent you enjoy thinking about the business as much as about the data.
Focus on business practicality and the 80/20 rule; very high bar for output quality, but recognize the business benefit of "having something now" vs "perfection sometime in the future"

A yearly free flight or train ride to a random location! Give our Teleporter a spin here.
A shiny MacBook to work your magic on.
Hybrid working, our way. Work from home *and* the office, we ask everyone to be in the office 2 days a week. It’s how we stay flexible, focused, and meaningfully connected in person.
An extensive home office set-up, everything from noise-canceling headphones to a standing desk.
30 days of vacation *(for adventures or sitting on the couch, it's up to you).*
Two paid Culture Days for days that are important to you but not recognized by the official Dutch calendar.
The option to switch up your zoom background by working from another country for up to 8 weeks a year.
A personal development budget for that curious mind of yours!
A pension plan to help you save for those around-the-world retirement trips.
Delicious daily team lunches.
Awesome monthly parties, as well as team trips away.
A lively office in downtown Amsterdam, with travel costs reimbursed.
Free Polarsteps Travel Books to contain all your far-flung adventures.