WHO WE ARE Hi, we’re DuckDuckGo, the online protection company and remote-first team of 300+ on a mission to raise the standard of trust online. Founded in 2008 and profitable since 2014, annual revenue now exceeds $100m USD and millions use our browser on on Mac Windows iOS and Android our search engine and the DuckDuckGo subscription We also offer private, useful, and optional AI, including Duck.ai which lets you chat privately with ChatGPT, Claude, and other AIs, all in one place. Our culture of trust, inclusivity, and empowered project management underpins everything we do, where each team member takes full ownership of their projects, from scoping and execution to postmortem. Working on the Data Science Functional Team, you’ll drive product and business impact through statistical modeling, experiment design, Bayesian marketing analysis, and classifier implementation across our search engine, instant answers, AI, and revenue optimization, and work on related projects. Recent projects include: – ai translating full-funnel data into actionable decisions – Expanding evaluation datasets for page context understanding across complex scenarios like multi-tab browsing and content reattachment – Our data meets rigorous privacy standards and is necessarily sparse, so you’ll need to think creatively to surface actionable insights in an evidence-first culture where quantitative rigor is the baseline, not the exception. You have 7+ years of experience in Data Science and a track record of leading high-complexity projects from scoping to production with minimal direction. – Apply knowledge of LLMs including fine-tuning,



LLM-as-judge, and AI-assisted development – You write production-grade code in Python or a comparable high-level language. – You have advanced SQL and query optimization skills, familiarity with columnar databases like BigQuery, Clickhouse, Redshift, or Druid; experience with a BI tool like Tableau or PowerBI is a plus. – You can design, implement, and analyze experiments across product surfaces, and are comfortable deriving insights from sparse or privacy-constrained data. – Compensation is transparent across the organization, and all team members within the same professional level and global region receive the same compensation. Eligibility for company-sponsored health benefits is limited to team members based in the United States. Our Team Member Support Guide explains how we prioritize your wellbeing including paid parental leave, office setup, and co-working allowances. Hiring works best when it’s a two-way street. DuckDuckGo provides equal work opportunities to all team members and applicants, and it prohibits discrimination and harassment of any type on the basis of race, color, ethnicity, caste, religion, age, sex (including pregnancy), national origin, disability status, genetics,



protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by our policies or federal, state, or local laws. If you need reasonable accommodation for any part of the application process because of a medical condition or disability, please send an email to careers@duckduckgo.
You’ll be required to attend meetings on camera via video conferencing – Expect to travel at least two times a year: once for our all-hands meetup and again for a team retreat (each around 4-5 days). While

we offer
a versátil work arrangement with no core hours, expect an average full-time commitment of 40 hours per week. – As part of our commitment to enhancing our recruitment process, we utilize artificial intelligence (AI) technology to assist in reviewing and summarizing job applications and test projects, including those tools integrated into our recruitment vendor platforms. We use AI to flag potentially fraudulent applications, analyze and summarize applicants’ experience, interviews, and project performance, and help streamline our selection process. Data Privacy: All information provided in your application will be handled in accordance with our Recruiting Privacy Policy We ensure that your personal information is protected and used solely for recruitment purposes. – Human Oversight and Accountability: The AI technology is designed to support our hiring team by providing insights and summaries of applications and evaluations of test projects against scoring rubrics.

📌 Data Science Data Science Senior Data Scientist (España)
🏢 DuckDuckGo
📍 España