Helen Wall

Helen Wall Helen Wall is an influencer

Leveraging data to make better business decisions | Consultant | Lecturer | Instructor | Power BI, Excel, Python, R, and SQL

Houston, Texas, United States
131K followers 500+ connections

About

Follow me to see my latest published content on data science, analytics, and visualization! Aficionado of Power BI, AWS, Tableau, and Excel (including Power Query), and currently diving deep into the world of Python, R, and AI (including machine learning). Designer and developer of business intelligence dashboards and visualizations supporting many business functions and industries.

Courses by Helen

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Articles by Helen

  • Testing Translytic Tasks

    Power BI predominantly consumes data. We connect it to data sources (which includes a wide variety of data source…

    2 Comments
  • Power B(AI)

    When OpenAI's ChatGPT interface debuted to the public at-large almost three years ago, it seemed enigmatic. We could…

    23 Comments
  • Power BI for $$$

    Happy Birthday Power BI! Power BI turns 10 today (July 24, 2025)! I started using the tool not too long after it first…

    5 Comments
  • Flying on Autopilot

    I remember taking a plane flight several years ago with a roller coaster landing. It was an otherwise uneventful short…

    2 Comments
  • Releasing Snakes into the Wild

    This week brings big news in both the Excel and Python communities! Python in Excel is now generally available as of…

    4 Comments
  • Slithering Back In

    I'm finally catching up on the latest editions of my newsletter after a bit of a break. Writing newsletters or any kind…

    2 Comments
  • The Modern Updates

    As I was perusing potential updates for my home recently, I started to think about how the definition of "modern" will…

  • WINDOWs of the World

    It's really hard to get very far in data science without knowing SQL. Within SQL there are different levels of…

    3 Comments
  • Straightening Things Out

    When I took linear algebra in college, my favorite part of the class was the end of it. The course was highly…

    2 Comments
  • SWITCH It Up

    In order to master managing data models, learning how to leverage conditional logic is a must. We see conditional logic…

    3 Comments

Activity

Experience

  • LinkedIn Graphic

    LinkedIn Learning Instructor

    LinkedIn

    - Present 8 years 3 months

    Creating online technology courses for the LinkedIn Learning data science library. Developed and recorded courses on Microsoft Power BI, Copilot, AWS QuickSight, Excel, R, and Python.

  • Helen Data Design Graphic

    Founder and Principal

    Helen Data Design

    - Present 9 years

    Interested in how to make data analytics and visualization a large scalable solution to understanding more about your business? I do Microsoft Power BI and AWS freelance consulting and training sessions on all parts of the technology, including queries, ETL frameworks, DAX calculations and modeling, and visualizations.

  • Rice University Graphic

    Lecturer in Management

    Rice University

    - Present 4 years 2 months

    Houston, Texas, United States

    Technology lead for Python for Business Analytics (MGMT 665) course for MBA students at the Jones Graduate School of Business

  • Founderz Graphic

    Professor

    Founderz

    - Present 3 years 1 month

    Developed and presented content in the Power BI-focused chapter in their new course: Online Master in AI and Innovation, created in collaboration with Microsoft.

  • CODE Magazine Graphic

    Contributing Author

    CODE Magazine

    - Present 6 years 7 months

    Authored articles with content focusing on Power BI, Tableau, data visualization best practices, and Excel Power Query

  • UMBC Training Centers Graphic

    Data Science Instructor

    UMBC Training Centers

    - Present 4 years 4 months

    Teach courses to government agencies on Python, R, Excel, and machine learning

  • Cornell University Graphic

    eCornell Course Facilitator

    Cornell University

    - 4 years

    Facilitating courses for predictive analytics, R, Python, and Excel optimization models for data science certifications, including engaging with students, grading projects, and designing additional projects to improve student experiences

  • Accelare Graphic

    Business Architect

    Accelare

    - 1 year 5 months

    Created Power BI dashboards utilizing design principles on the front end, and DAX languages and multiple data sources on the back end to build out data visualizations to be leveraged by different business departments and levels of users. Provided Accelare consulting staff with training on methods and approaches to leveraging Excel’s functionality to provide more effective and efficient client solutions. Project manager for predictive analytics Medicaid project. Designed and developed Microsoft…

    Created Power BI dashboards utilizing design principles on the front end, and DAX languages and multiple data sources on the back end to build out data visualizations to be leveraged by different business departments and levels of users. Provided Accelare consulting staff with training on methods and approaches to leveraging Excel’s functionality to provide more effective and efficient client solutions. Project manager for predictive analytics Medicaid project. Designed and developed Microsoft Power BI metrics designed to be incorporated with Accelare’s WorkFit software that strategy to execution to numerous Fortune 500 companies. Provided the client analytical support through calculation and analysis the modeling of their employment data. Combined this data with allocated cost totals to transform the unstructured view to a useful visualizations, dashboards, and report, assisting the client in identifying significant cost reductions of over $10 million. Real-time logistics analysis with Splunk (SQL structured database) to reduce revenue losses for a large city transportation system by over $3 million a year by improving efficiency for fixing open ticket gates. Analysis and design of HR organizational charts to streamline personnel structure to a lower cost base by cutting around five percent for each department.

  • AIG

    AIG

    4 years 5 months

    • AIG Graphic

      Business Analyst

      AIG

      - 1 year 9 months

      Houston, Texas

      Advanced rollout of the OneClaim global implementation in 23 countries, including translation of system information into five languages, for the largest Pegasystems project in company history designed to save AIG $1 billion a year in total operating costs for processing claims. Conceptualized and configured the AIG claims platform, strengthening platform performance to address operational requirements from use cases to the creation and customization of PegaRULES Process Commander (PRPC)…

      Advanced rollout of the OneClaim global implementation in 23 countries, including translation of system information into five languages, for the largest Pegasystems project in company history designed to save AIG $1 billion a year in total operating costs for processing claims. Conceptualized and configured the AIG claims platform, strengthening platform performance to address operational requirements from use cases to the creation and customization of PegaRULES Process Commander (PRPC) requisites. Conferred with stakeholders worldwide about technical and delivery components of implementation projects. Culled requirements for major projects from end users such as the North American Private Client Group and insurance lines in France.

    • AIG Graphic

      Actuarial Assistant

      AIG

      - 2 years 9 months

      Houston, Texas

      Part of Actuarial Student program. Calculated and analyzed deferred annuity GAAP and statutory reserve liabilities for financial reports and statements, encompassing an in-depth range of quarterly and annually prepared exhibits. Documented the account value of over $2 billion in deferred annuities as a valuation actuary role. Analyzed financial statements and drafted reports using SAP accounting software, running financial queries and utilizing SAP reports to deepen analysis of the actuarial…

      Part of Actuarial Student program. Calculated and analyzed deferred annuity GAAP and statutory reserve liabilities for financial reports and statements, encompassing an in-depth range of quarterly and annually prepared exhibits. Documented the account value of over $2 billion in deferred annuities as a valuation actuary role. Analyzed financial statements and drafted reports using SAP accounting software, running financial queries and utilizing SAP reports to deepen analysis of the actuarial projections for the deferred annuity block of business. Evaluated and forecasted the deferred annuity cost (DAC) model as part of an annual review designed to align the projected mortality rates, interest rate credited, interest earned, and the expenses in-line with the observed financial experience of the model over the previous year’s performance. Yearly DAC unlocking process reflected in the reported GAAP revenue statements, and these numbers include an increase of $200 million in reported earnings for the entire deferred annuity block of business in 2013. Modeled annuity product interest rates in accordance with market projected interest rates and guaranteed rates. Produced and validated life insurance and annuity illustrations on multiple software programs leveraged by agents to illustrate life insurance/annuity products to a diverse customer base including high net worth clients. Verified product information, specifications, and assumptions accuracy, such as interest rates and fund values. Crafted testing strategies to verify project insurance information accuracy, originating programs to confirm the use of the correct values throughout key processes from pricing to final insurance software calculations.

Education

  • Cornell University Graphic

    Cornell University

    Professional Certificates

    -

    Python for Data Science
    Python Programming
    Machine Learning
    JavaScript Programming
    Data Science Essentials

  • Durham University Graphic

    Durham University

    MA Financial Management

    -

    Activities and Societies: Ustinov College, Americas Society

    Courses: Organizational behavior, financial management, managerial accounting, business strategy, corporate finance, mergers and acquisitions, research methods (including quantitative research methods). Dissertation research focused on the potential future costs of diabetes as it relates to increased incidence of obesity and various known risk factors for developing the disease.

  • University of Washington Graphic

    University of Washington

    Bachelor of Arts, Double Degree Economics, Mathematics

    -

    Activities and Societies: University of Washington Varsity Rowing Team

    Courses: Linear programming, computer science, advanced multivariable calculus, differential equations, mathematical and number theory, linear algebra, game theory, macroeconomics, microeconomics, economics of education, econometrics

Licenses & Certifications

Volunteer Experience

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