TL;DR

Senior Data Scientist (Data Science/ML): Build and optimize predictive models, attribution models, and experimentation frameworks to enhance user acquisition, engagement, and revenue for millions of users with an accent on customer lifetime value modeling, A/B testing, and causal analysis. Focus on designing experiments, driving strategic data-driven decisions, and solving complex business problems with advanced SQL and Python skills.

Location: On-site in Berlin, Germany

Company

%hirify_global% is a fast-growing Berlin-based startup aiming to become Germany's second bootstrapped unicorn, focused on innovating marketing by rewarding a community of over 50 million users for engaging with advertisers' products.

What you will do

Lead development of predictive models, especially Customer Lifetime Value (CLTV), to identify high-value user segments and optimize marketing and product strategies.
Design and analyze hundreds of A/B tests and observational causal methods to understand user behavior and measure strategy impacts.
Collaborate with business leaders including the CEO and marketing managers to translate complex business challenges into data problems and influence decisions.
Improve attribution models and fraud prevention, and provide data-driven recommendations for product features and game recommendations.
Perform advanced data analysis and build analytical models using SQL and Python.

Requirements

Must be based in Berlin, Germany and work on-site.
4+ years experience in data science or advanced analytics focused on business performance and growth metrics.
Expertise in predictive modeling (especially LTV), user segmentation, and experimentation design (A/B testing and causal methods).
Strong proficiency in SQL and Python for complex data manipulation and statistical modeling.
Experience collaborating with technical and business stakeholders to drive measurable impact.
Strong business acumen and ability to simplify complex data requests into actionable solutions.

Nice to have

A scientific mindset with strong statistical rigor applied to data problems.
Flexibility and motivation to work on diverse projects impacting revenue and user growth.

Culture & Benefits

Equity offered to all Berlin-based employees to share in company success.
Work in a profitable startup with a modern, fully-stocked central Berlin office.
Transport subsidy, breakfasts and lunches, language learning, Urban Sports Club membership, and more.
Regularly updated benefits based on employee feedback.
High ownership and proactive problem-solving culture in a fast-paced environment.