Helena W.

  1. Data
  2. SaaS
  3. PostgreSQL
  4. Data Analytics
  5. Data-Driven Decision Making
  6. Large Enterprise

Marketing/Business Data Analyst, Ex-Coinbase, Walmart, Pietra Studio 🔍 | Record-holding elite powerlifter

I am an ex-Coinbase data analyst and growth marketing expert with deep experience building visualizations and models with tools ranging from Excel to PowerBI and Tableau for both startups and public companies, based on product/customer data.


I also have led growth marketing at Teal and Examine.com and have grown revenue by debugging AARRR funnels, bridging both technical and qualitative aspects of marketing analytics and strategy.


With expertise in SQL, JavaScript, Python, and more, and comfort setting up Meta pixels and conversion API, I act as a single expert deploying code, analyzing funnels, and building data reports and post-mortems for marketing campaigns.

Hire Helena
Helena W.

Testimonials

  • Helena is a superb data science and analysis professional. She graduated Duke University with both a bachelor's and masters degree in STEM. She quickly assimilates large quantities of data and draws out key insights for decision makers. She has an unbelievable work ethic that has propelled her in her work and her athletics as a world champion powerlifter. I highly recommend Helena to any prospective employer.

    AC

    Andrew Cohen

    Senior Sales Executive, Ensono

Work

  • Reporting Revamp for Senior E-Commerce Leaders

    Reporting Revamp for Senior E-Commerce Leaders

    I built a new senior executive-facing dashboard in Looker that saved data costs. I presented the case for specific landing page strategies based on analyses that boosted GMV from key B2B partnership customers by 40% in just three months, primarily driven by:

    • Improved AOV
    • Increased purchase frequency
    • Increasing add-to-cart to checkout conversion rates

Experience

  • Walmart

    Walmart

    Data Analyst

    Nov 2023 - Jun 2024

    Walmart Business is a consolidated e-commerce and in-store retailer that services all the needs of businesses and public organizations.

    • Boosted GMV from key strategic partnership customers by 40% over 3 months via proactive order insights.
    • Developed churn data models to predict paid membership attrition and support GTM strategies to mitigate it.
  • Coinbase

    Coinbase

    Data Analyst

    Mar 2022 - Feb 2023

    Coinbase is a secure online platform for buying, selling, transferring, and storing cryptocurrency.

    • Led team members and data engineers in streamlining ETL pipeline to data warehouse and data transformation.
    • Modeled predictive churn rates with Python, built Tableau dashboards, and delivered next steps to senior Marketing executives, resulting in programs that improved retention by 15%.
    • Updated Snowflake customer databases to reduce redundancy and costs and proactively fix data gaps.
    • Fixed marketing attribution errors in the Snowflake database and presented a data-driven strategy to improve CAC by 25%.
  • Qualtrics

    Qualtrics

    Technical Account Manager

    Feb 2021 - Feb 2022

    Qualtrics is a web-based platform that helps businesses create personalized experiences for their customers and employees.

    • Directed data analysis and reporting in pivotal customer research objective for finance client, resulting in a 1.5x B2B license upsell.
    • Partnered with a healthcare enterprise client to track and raise CSAT (3.7 to 4.3) and NPS (17% improvement).
    • Developed internal senior management-facing Tableau dashboards that streamlined team allocation by 30%.
  • Duke University School of Medicine

    Duke University School of Medicine

    Masters of Management in Clinical Informatics

    Aug 2020 - Aug 2021

    Duke University’s Master of Management in Clinical Informatics (MMCi) is a one-year master’s degree program that equips working physicians and clinicians, as well as business and IT professionals with the multidisciplinary expertise they need to design better, more efficient patient care.

    • Presented POC & cost analysis of cloud DR applications to key leaders in Duke Health Technology Solutions.
    • Designed cloud infrastructure to achieve “five 9’s” uptime using Microsoft Azure Well-Architected Framework

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