Senior Data Scientist

About the role

DuckDuckGo is looking for a Senior Data Scientist to join its Data Science functional team. The role drives product and business impact through statistical modeling, experiment design, Bayesian marketing analysis and classifier implementation across the search engine, instant answers, AI and revenue optimization. The data is sparse and meets strict privacy standards, so creative thinking is needed to turn it into actionable insights.

Key responsibilities

• Define core growth metrics for products and build infrastructure to monitor trends and anomalies
• Measure the impact of major marketing campaigns, turning full-funnel data into decisions
• Build monitoring pipelines to detect unexpected shifts in search traffic faster and more reliably
• Expand evaluation datasets for page context understanding, including multi-tab browsing and content reattachment
• Improve the trigger systems that decide when AI-assisted answers appear, balancing quality and a privacy-first approach

Required profile

• 7+ years of experience in data science, with a track record of leading high-complexity projects from scoping to production with minimal direction
• Ability to derive insights from sparse or privacy-constrained data
• Effective collaboration with product teams and contribution to team throughput
• Willingness to attend meetings on camera and travel at least twice a year (all-hands and team retreat)
• Average full-time commitment of 40 hours per week; a background check is required

Required skills

• Deploying and iterating on machine learning in production, and/or developing and deploying NLP solutions
• Knowledge of LLMs, including fine-tuning, LLM-as-judge and AI-assisted development
• Marketing campaign analysis using Bayesian methods
• Production-grade code in Python or a comparable high-level language
• Advanced SQL and query optimization; columnar databases such as BigQuery, ClickHouse, Redshift or Druid; BI tools like Tableau or PowerBI are a plus

What we offer

• Transparent compensation plus stock options: $190,500 USD in the US, £134,600 GBP in the UK, CA$253,500 CAD in Canada, and €157,350 EUR in other regions
• Flexible work arrangement with no core hours
• Company-sponsored health benefits available only to team members based in the United States