> Markdown version of [/jobs/ext/4346714-principal-data-scientist](https://www.wearedevelopers.com/jobs/ext/4346714-principal-data-scientist). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Principal Data Scientist - **Company:** Upstart - **Location:** United States (Remote available) - **Experience:** Expert - **Salary:** $182,300.0 - $252,500.0 - **Contract:** Permanent contract - **Skills:** A/B Testing, Machine Learning, Recommender Systems, Software Coding - **Published:** October 5, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=4bd66412058bbc3e ## About the Role * 8+ years of experience in data science or quantitative roles with direct impact on product or business strategy. * Demonstrated mastery of experimental design and A/B testing * Deep statistical expertise, including causal inference methods. * Strong coding skills. * Track record of partnering with non-technical stakeholders to translate data into actionable business decisions, not just delivering analyses. * Comfort operating in ambiguous environments where the right questions aren't predetermined, and the ability to shape direction through thoughtful inquiry. * Exceptional communication skills, demonstrated ability to move fluidly between strategic questions and tactical details, and excellence in translating complex technical bodies of work into clear narratives. * Exposure to ML applications and ability to partner effectively with ML/data science teams on technical challenges. * Familiarity with personalization, recommendation systems, or matching algorithms., * Experience with at least one of the following is highly preferred: forecasting, spend allocation optimization, marketing incrementality, or attribution. ## Description * Shape strategic direction by identifying the gaps and questions others miss. You're not waiting for orders; you're setting the agenda. * Be a thought partner to leaders across product, finance, and ML. You help them understand complex problems from first principles and define what actually matters. * Design, build, and own tools that are leveraged across the team, such as models for forecasting change, optimizing spend allocation, marketing incrementality, and attribution. * Design and execute experiments, from classic A/B tests to complex causal inference analyses, with full ownership of hypothesis development, experiment design, and results interpretation. * Build metrics frameworks and measurement strategies, helping stakeholders understand what to optimize for and why. * Collaborate with our ML organization on high-complexity technical challenges, bringing statistical rigor and causal reasoning to our work. * Translate ambiguous, multifaceted business problems into clear frameworks that guide decision-making. * Take ownership of your work end-to-end: from scoping the question, to analysis, to storytelling, to driving organizational change based on insights. * Influence without direct authority across engineering, product, finance, and executive leadership, creating clarity and alignment where understanding is incomplete.