Haystack News

Data Scientist

• Build statistical and machine learning models to improve content discovery and user engagement
• Work closely with ML engineers to translate models and insights into production systems
• Apply analytical skills to dive deep into data and find key business insights
• Apply causal inference methods to understand the impact of potential product changes
• Define and build new ML features using text and multimodal embeddings and GenAI
• Validate offline learnings with online outcomes through A/B testing; design, execute, and analyze experiments to prove product change attribution

Senior Data Scientist

Operations

• Own paid growth measurement across AppsFlyer, SKAdNetwork, deep link tracking, and CTV placements on Roku, Fire TV, Vizio, and Samsung
• Validate MMP data against reality and correct tracking drift
• Design and automate reporting systems and dashboards for revenue, partnerships, and marketing campaigns across Snowflake and third-party tools
• Build LTV, CAC, and payback models by platform and device
• Design and run incrementality tests, including holdout, geo, and pre/post tests
• Build and monitor A/B tests and experimentation frameworks with Product and Data teams
• Identify and communicate actionable insights that drive user growth, partner success, and marketing ROI
• Manage budget pacing, forecasting, and reconciliation across Meta, Google, Apple Search Ads, and CTV platforms
• Collaborate with Growth Marketing on bid and budget changes and automate routine changes
• Perform financial modeling and deal analysis to predict efficacy, ROI, CPI, and CAC
• Build monitoring checks for broken pipelines, incorrect CAC numbers, and tracking integrity
• Use AI tools daily to write and check queries, build automations, and compile reports

Senior Data Scientist

Growth Analytics, Operations Lead