Senior Data Scientist working with Buffer to enhance data utilization for product and growth strategies. Collaborating across teams to drive insights and improve decision-making.
Responsibilities
Serve as Buffer’s primary Data Scientist, supporting product and growth teams with analysis that informs decisions and prioritization
Build and maintain behavioural and business models across acquisition, activation, engagement, retention, and monetization
Lead complex analyses and research to identify product and growth opportunities, not just validate existing ideas
Design, analyze, and interpret experiments across product and growth initiatives, including A/B tests and incrementality studies
Partner with cross-functional teams to define success metrics, evaluation frameworks, and clear decision criteria
Develop reusable datasets, models, and reporting patterns that reduce ad-hoc requests and increase self-serve capability
Help evolve Buffer’s data systems, definitions, and measurement approach as we invest in analytics product features and personalization
Use AI-assisted tools to streamline analysis, accelerate insight generation, and make data more accessible across the organization
Communicate findings through clear narratives, documentation, and recommendations that influence decisions at multiple levels
Improve the reliability of our analytics foundations through better modelling patterns, data quality checks, documentation, and clear sources of truth
Partner with engineering to strengthen the data platform over time, including clearer ownership boundaries, better observability, and fewer fragile workflows
Help shape our approach to AI-assisted analytics responsibly, including safer defaults, governance considerations, and a bias toward trusted semantic layers over free-form querying
Requirements
Significant experience as a Data Scientist (or equivalent) in a SaaS or product-led growth (PLG) environment, with a strong understanding of SaaS metrics, growth loops, and monetization dynamics
Deep hands-on experience with modern analytics stacks, including SQL-based data warehouses (BigQuery preferred; Snowflake or Redshift also relevant), BI tools such as Metabase, Mixpanel, Looker, or Mode, data transformation frameworks like dbt, and event tracking platforms like Segment
Strong foundation in statistical analysis and causal reasoning, with fluency in SQL and advanced experience using Python or R for analysis, modelling, and data visualization
Proven track record of owning complex, ambiguous analytical problems end-to-end, from framing and data exploration through to recommendations that influence product and business decisions
Experience designing, analyzing, and interpreting experiments, including A/B testing, incrementality, and causal analyses, with a strong sense of methodological tradeoffs
Experience building and maintaining analytical models across the full customer lifecycle, including acquisition, activation, engagement, retention, and monetization
Demonstrated ability to balance high-impact strategic work with day-to-day analytical support, while systematically reducing ad hoc requests through better tooling, documentation, and self-serve systems
Strong cross-functional partner to product managers, marketers, engineers, and designers, able to influence direction through data rather than operating as a service function
Skilled at translating complex, messy data and ambiguous questions into clear metrics, narratives, and actionable insights for a wide range of stakeholders
High degree of ownership and judgment, comfortable acting as the primary or most senior Data Scientist within a small team and shaping how data work gets done
Experience leveraging modern data and AI-assisted tools to increase analytical leverage, improve insight accessibility, and scale impact across the organization
Nice to have (strong plus): Experience in an analytics engineering style role (dbt-first modelling, metric layers, curated datasets, data quality testing)
Familiarity with data orchestration and observability concepts (even if you have not owned them end-to-end)
Experience working with privacy, governance, and access controls in analytical environments
Practical experience using LLM tools for analysis in a way that is secure and auditable (for example: working only on approved datasets, avoiding sensitive fields, documenting assumptions)
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