Senior Product Manager - User Activation & Growth

About the role

As a Senior Product Manager for User Activation & Growth at Taxfix, you will redefine how we grow, using AI-augmented experimentation, Behavioral Science, and data-driven decision-making to attract new users and convert them into loyal tax filers. Your playground is our German tax filing product: proven product-market fit, a rich data foundation, and real room to innovate on every step of the user journey.

What you'll do

• Own the end-to-end user journey: from the first app touchpoint through personalized onboarding, intelligent product steering (self-employed or income tax filers), seamless registration & authentication, activation, and user management
• Develop a deep understanding of user needs, ideal customer profiles, behavior, and friction points in the existing user experience through qualitative research (user interviews, analyzing user flows, etc.), data analytics, and experimentation
• Translate user problems into clear hypotheses on how to grow user adoption and revenue, applying Behavioral Science principles such as nudging, choice architecture, and cognitive bias reduction
• Develop and pre-validate solution options for driving Activation & Growth KPIs using synthetic research
• Define clear Activation & Growth KPIs to guide prioritization and measure impact, then develop and execute a disciplined backlog of experiments leveraging AI to accelerate hypothesis generation, prototyping, and test design optimizing existing growth loops and deploying new ones
• Own planning quality end-to-end: from rigorous impact assessment and prioritization to leveraging AI in the development process to ship predictably and with confidence
• Lead your cross-functional team (Engineering, Design, Data) to run effective experiments, while building strong relationships with Marketing, leadership, and other product teams to create a shared understanding of growth levers, metrics, and learnings

What you'll need

• 5+ years of product management experience in consumer-facing digital products
• Proven track record of driving product-led growth for a high-scale consumer product with measurable growth impact, working with cross-functional teams
• Applied knowledge of Behavioral Science including nudging, choice architecture, and cognitive bias reduction - to influence user behavior and improve activation
• Strong qualitative research skills, including user interviewing and user flow analysis, combined with a data-driven, analytical mindset and deep user empathy to identify high-impact opportunities and drive KPI impact
• Hands-on experience leveraging AI to develop hypotheses, run experiments, create prototypes, and pre-validate solution options
• Experience with high-tempo experimentation and funnel optimization to improve existing and launch new growth loops
• Structured approach to planning and prioritization, with the ability to develop rigorous impact assessments and deliver reliably
• High ownership mindset you drive problems to resolution without waiting to be directed

What they offer

• Employee stock options for all employees
• 30 annual vacation days and flexible working hours
• Work from abroad for up to six weeks every year
• Monthly allowance to spend on an extensive range of services
• Free mental health coaching sessions and yoga
• Free tax declaration filing through the Taxfix app