Data Scientist

Who you are

• 4+ years of relevant Data Science experience
• Experience in Ads Marketplace and/or Monetization experience
• Experience architecting, debugging, and executing complex SQL queries
• Excellent knowledge of Python, including common scientific computing packages and data science tools such as numpy, pandas, and scikit-learn
• Experience formulating, running, and sharing complex analyses, including different types of experiments, causal inference studies, and other exploratory analysis work
• Innate curiosity around finding meaningful insights that inform the way we think about and develop both our product and our business strategies
• Eagerness to explore and apply AI and emerging technologies to reimagine how work gets done
• Work experience related to social or community-based products
• Work experience related to small businesses and marketplaces
• Work experience related to advertising and auction systems
• Experience with agentic coding platforms such as Cursor or Windsurf

What the job involves

• As a Data Scientist on the Monetization Team, you will drive revenue growth and advertiser value by focusing on the machine learning auction ads delivery layer
• You’ll directly contribute to growing and improving our core Ads products and help lead us into the future of data and revenue at Nextdoor
• Responsibilities will include shaping ranking models and objective functions, establishing an explainability layer for model feedback loops, and performing auction measurement
• The role offers the opportunity to drive the roadmap and explore potential applications for artificial intelligence and large language models
• We are looking for an entrepreneurial and driven candidate to accelerate our efforts and be a major part of our data-centric culture
• This person will work closely with various cross-functional teams such as Product, Engineering, Machine Learning, Sales & Finance to develop and deliver metrics, analyses, solutions, and insights, with actionable recommendations to business partners
• Design and develop algorithms and models to optimize Ads Marketplace performance, driving value for both end-users and Advertisers
• Experiment design: Make sure we run experiments efficiently and accurately, including monitoring early feature development through tracking post-release follow-ups
• Develop and share key strategic insights through data analysis, including designing experiments and evaluating the performance and impact of data-driven content
• Partner with cross-functional teams to support product development efforts (including product, design, engineering, marketing, and operations)
• Participate in in-person Nextdoor events such as trainings, off-sites, volunteer days, and team-building exercises
• Build in-person relationships with team members and contribute to Nextdoor’s company culture

Benefits

• Monthly wellness stipend
• 12 weeks of parental, family or medical leave
• Global end of year shutdown
• Learning and development stipend
• Work from home opportunities
• Health insurance