Rakuten Viber is one of the most popular and downloaded apps in the world. Working with us provides a unique opportunity to influence hundreds of millions of our users and to be part of the journey that makes us a super-app. Our mission is to make people’s lives easier by enabling meaningful connections, from precious moments with family and friends, through managing business relationships to pursuing their passions.

We are looking for a highly skilled Senior Data Analyst with strong technical expertise and a passion for analyzing and optimizing mobile app advertising performance. The ideal candidate will have extensive experience in data analysis, A/B testing, and working with causality models to drive actionable insights.

If youre passionate about the ad-tech world, data analysis, and driving business growth through insights, we’d love to hear from you!

Analyze mobile app advertising data to optimize ad unit performance, user engagement, and monetization strategies
Define, conduct and analyze A/B tests to evaluate the effectiveness of different ad strategies
Apply causality models to derive insights and measure the impact of ads on user behavior
Collaborate with cross-functional teams to translate data findings into business strategies
Use SQL, Python, and data visualization tools (Looker, Matplotlib) to analyze, report, and present data
Develop dashboards and reports to track key performance indicators (KPIs) for ad performance
Provide actionable recommendations based on data analysis to optimize ad strategies and campaigns
Manage data projects and mentor junior analysts when needed

5+ years of experience in data analysis, preferably in the mobile apps market.
Strong expertise in SQL, Python, and data visualization tools (Tableau, Looker, Matplotlib)
Experience designing and analyzing A/B tests
Familiarity with causality models for identifying relationships in data
Proven ability to work both independently and in a team environment (people person)
High motivation, proactiveness, curiosity and attention to detail

Experience in Ad-tech - big plus
Experience managing a team or mentoring junior analysts - strong advantage