02 — Trajectory

A decade of compounding impact.

  1. May 2026 – present

    Sr Staff Data Scientist

    Intuit · San Francisco, CA
    • Joined to take on the next hard problem in applied data science at scale.
  2. Nov 2022 – May 2026

    Identities Data Science Tech Lead

    Square / Block · San Francisco, CA
    • Generated 100K+ business-type and address-matching insights using Claude and GPT on Snowflake Cortex.
    • Applied GooseAI and ChatGPT to CS ticket analysis, surfacing the patterns that reduced churn.
    • Built a classification model uncovering $0.5M / year in fee exposure; ran A/B tests with diff-in-diff, segmented regression, and survival analysis.
    • Authored the org-wide ETL template; championed Anomalo, Select Star, Growthbook, and data contracts (~50% analyst time savings).
    • Served on the AI Steering Committee shaping the enterprise AI roadmap.
    • Coached two direct reports through promotion; co-led the IC ladder and interview revamp.
  3. Jan 2022 – Nov 2022

    Analytics Manager

    Square / Block · San Francisco, CA
    • Led a team of four sales data analysts; upskilled them through training and pair programming.
    • Owned performance reviews, career conversations, and team-level priorities.
    • Led the sales reporting and infrastructure overhaul; rolled out a new forecasting methodology.
  4. Apr 2019 – Jan 2022

    Senior Data Scientist — E-Commerce & Mobile App Platform

    Square / Block · San Francisco, CA
    • Rebuilt the Editor Prime data model and event-tracking infrastructure; built ETLs in Airflow.
    • Defined sprint KPIs, built Looker dashboards, ran impact analyses and A/B tests across onboarding, the website editor, and OS deprecation.
    • Led the Optimizely rollout for ECOM; co-hosted org-wide A/B testing office hours.
  5. Oct 2017 – Feb 2019

    Data Scientist

    Medium · San Francisco, CA
    • Product analytics: user segmentation, funnel and behavior, and growth time-series analyses.
    • Data engineering: designed, built, and optimized ETLs in Redshift.
    • Tooling, dashboarding, and reporting for Marketing, Editorial, and Product teams.
    • Experimentation: designed and analyzed A/B tests across web and mobile, then translated the results into recommendations.
  6. Jul 2016 – Oct 2017

    Product Analyst

    FiveStars · San Francisco, CA
  7. Nov 2015 – Apr 2016

    Data Analyst

    YouNoodle · San Francisco, CA

Education

MSci, Atomic & Particle Physics and Physical Chemistry (Natural Sciences)
University College London
2015
National scholarship recipient — sole Polish student selected that year
Headington School, Oxford