David Liszewski Email & Phone Number

Seattle, Washington, United States

Seattle, Washington, United States

- Owned KPI metrics for 4 data products contributing to 50% of company revenue, analyzed key metric changes, and delivered insights to stakeholders as the main point of contact for metric discussions (SQL, Looker)- Led a cross-functional project to improve sales agent performance metrics and create a Random Forest model for predicting sales from phone conversations to optimize agent-shopper matching, achieving a 10% increase in sales (Python)- Managed the design, experiment testing, and deployment of an optimized customer call routing system by utilizing analysis on shopper propensity to wait on hold, driving a 5% increase in call answer and sale rates (SQL, Python, Looker)- Conducted exploratory data analysis on potential projects to identify high-impact initiatives, improving prioritization for the work of 3 data scientists across 4 data products (SQL, Python, Looker)- Implemented KPI and ML model monitoring dashboards with alerting, reducing bug detection time from 1 week to less than 1 day and saving over $1M in potential lost revenue (SQL, Looker, Monte Carlo)- Mentored 3 junior data scientists, providing guidance on data science best practices, tech stack, product knowledge, and stakeholder management, supporting one in achieving a promotion

Seattle, Washington, United States

- Designed A/B tests, integrated new KPI’s, and formulated an improvement roadmap for a novel telephonic customer outreach approach; efforts transformed a potential 40% revenue loss into $10M annual marketing cost savings (SQL, Looker)- Streamlined telephonic customer intent data product with 1M daily predictions by consolidating 8 independent ML models into a single Random Forest model, achieving a 5% increase in revenue (Python)- Optimized shopper outreach data models for business users and ML model training, resulting in 40% faster query performance and complete data coverage (SQL, DBT, Airflow)

- MIT Master of Business Analytics Capstone project- Identified digital shopper outreach segments by modeling and analyzing email/SMS marketing campaigns (Python, Tableau)- Designed and implemented A/B testing experiments on 20K customers to improve cross-selling of insurance product lines

Kent, Ohio, United States

- Improved student understanding of challenging mathematics concepts from Linear Algebra, Calculus, and Trigonometry for 20 students in individual sessions each week of the semester- Updated tutoring plans to virtual instruction mode during the COVID-19 pandemic to deliver flexible education- Worked within the federally funded TRIO's Student Support Services tutoring program that supports low-income, first generation college students, and individuals with disabilities

Mayfield Heights, Ohio, United States

- Developed an application with front-end user interface to bring internal software up to industry standards (ASP.NET Core, C#, HTML, CSS)- Led team of 3 interns to conduct a cost-benefit analysis on 4x speed advantages of In-Memory databases; presented findings during an internal conference to Progressive IT senior leadership- Utilized scrum and agile development techniques to collaborate with colleagues and deliver updates to meet weekly deadlines

Kent, Oh

- Developed program to automate data analysis on 82K transistor readings and identify faulty devices to provide reliable results for adjustments in further design developments (MATLAB)- Assembled and tested 4 novel designs for organic field-effect transistors (OFET) using an electrical switch box and testing program- Worked as a research assistant to Dr. Bjorn Lussem of the Kent State University Physics Department

Master Of Business Analytics (Mban)

Activities and Societies: Runner-up in the Slalom Consulting Data Analytics Hackathon Analytics Project: Devised deployment strategy.

Bachelor Of Science - Bs, Applied Mathematics, Summa Cum Laude, Gpa: 4.0

Activities and Societies: Pi Kappa Alpha Fraternity - Secretary. Math Club - President. Pi Mu Epsilon National Mathematics Honor's.