Jathaniel Spengler

jayspengler@gmail.com
+1 (360) 820 3241
San Francisco

Data scientist and program architect with a proven record of successful product development in multi-sided markets. Specializes in insightful experiments, impactful data modeling, and metric development. Can speak data at any level, from engineers to researchers to executives.


Experience

Data Lead

Mozart Data

First data hire at a Y Combinator 2020 startup, who covers all sides of the business: developing growth strategy, reporting for sales/product, onboarding and supporting customers, and developing product for a data engineering and analytics consulting software.

  • Create and test growth personas and nurture prospects from lead to customer.
  • Consult with and migrate customers from legacy data systems to a modern pipeline.
  • Use DBT and Python to automate data models for customer use cases—automatically creating reporting metrics. This is a key feature for out-of-the-box analytics.
  • Grew business from 1 to 100 enterprise customers.
  • 2021 - Present

    Director of Growth Analytics

    Eaze

    Pioneering member of growth analytics team, kicking off an era of unprecedented revenue expansion. Worked closely with engineering and product teams to develop the service, growing the active user base by 20x. Oversaw a $22MM budget and over 4 million deliveries.

  • Created machine learning models for demand prediction, inventory, and delivery levels.
  • Work with user researchers to develop engagement model, reducing churn/unsubscribes and increasing Net-Promoter Score by almost 2 points.
  • Created dispensary KPI dashboard which improved delivery times and reduced costs over 20%, resulting in $6MM savings per year.
  • Managed a cross-functional team of 15 data scientists and growth managers.
  • 2017 - 2021

    Engineering Manager

    General Motors (Cruise Division)

    Joined the Autonomous Vehicle division at Cruise after GM acquired Sidecar. Managed a team of 6 data engineers and analysts, developed reporting infrastructure and internal apps.

  • Created and containerized internal data tool for parsing ROS (Robot Operating System) files, providing engineers with access to massive-scale data in near real-time.
  • Oversaw design and creation of call-center web app for AV call centers.
  • Designed information architecture to support ride customers / app developers.
  • 2016 - 2017

    Head of Analytics

    Sidecar

    Joined Sidecar as the 5th employee. Built analytics stack and developed product features and strategy. Hired teams of people to and oversaw a seamless integration of information and people with fast-paced company strategy.

  • Designed, created, and coded a comprehensive analytics program.
  • Modeled out ridesharing algorithms in R/python using machine learning/regression.
  • Pioneered shared-rides and dynamic discounts two years before Uber and Lyft.
  • Grew product from inception to over 200,000 active users and 2 million rides.
  • 2012 - 2016

    Product Manager, Database Administrator

    Fisher Investments Asset Managmenet

    Owned all changes for CRM system supporting 20k customers. Learned to invest.

  • Planned and supervised changes for CRM system (.NET based with python middle tier).
  • Oversaw migration from Access to SQL server.
  • 2012 - 2016

    Education

    University of Western Washington

    Bachelor of Science
    Major: Economics
    Minor: Computer Science

    GPA: 3.83

    2001 - 2005

    Skills

    Skills I practice                                           Tools I've used
    • SQL (Postgres, NoSQL)
    • Python / R
    • Machine Learning
    • Cost / Lifecycle Modeling
    • Product / Change Management
    • Advanced Excel
    • AWS / Azure / GCP
    • DBT / Airflow / Stitch
    • Tableau / PowerBI / Mode
    • Spark / Databricks
    • Docker / Kubernetes
    • Terraform / Ansible

    Interests

    Apart from being a data scientist, I enjoy most of my time being outdoors. In the winter, I am an avid snowboarder and aspiring photographer. During the warmer months here in Colorado, I enjoy backpacking and cycling.

    When forced indoors, I enjoy developing rogue-like indie games and playing the cello/guitar. I am an aspiring chef, and I spend a large amount of my free time thinking how to leverage data science in support of climate and social justice.