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David Okafor

Data Analyst · SQL, dbt & Experimentation

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Key facts

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Location
Chicago, Illinois
Experience
3 roles
Skills
13 listed
Links
3 visible

Summary

Data analyst with 6 years of experience turning messy data into decisions people trust. I specialize in SQL, dbt, and experimentation, and I build dashboards and pipelines that teams actually use every day. I care about rigor without the theater — clean data models, honest experiment design, and metrics that mean something.

Career Highlights

  • Built an experimentation platform supporting 50+ A/B tests a year; a pricing test I designed added 8% to subscription revenue
  • Rebuilt the company's dbt pipelines, cutting dashboard refresh times from hours to minutes
  • Automated manual reporting that saved the operations team 20 hours every week

Experience

Senior Data Analyst

Contoso Analytics

2021 — Present

Senior data analyst embedded with the growth team. Built an experimentation platform supporting 50+ A/B tests per year and designed the pricing test that added 8% to subscription revenue. Rebuilt core dbt pipelines, cutting dashboard refresh times from hours to minutes.

Data Analyst

Bluepeak Retail

2018 — 2021

Owned analytics for the merchandising team across 120 stores. Built inventory dashboards that helped cut stockouts by 15% and designed KPI frameworks adopted company-wide. Partnered with data engineering to model clean, tested datasets in dbt.

Business Analyst

Harborline Logistics

2016 — 2018

Business analyst for regional operations. Automated weekly reporting with SQL and Python, saving the team 20 hours a week, and built the first on-time-delivery scorecard used in carrier negotiations.

Education

B.S. Statistics

University of Illinois Chicago

2012 — 2016

Certifications

  • Google Data Analytics Professional Certificate (fictional demo entry)
  • dbt Analytics Engineering Certification (fictional demo entry)

Areas of Expertise

SQL & data modelingDashboard & KPI designA/B testing & experimentation

Skills

Programming Languages

SQLPython

Frameworks & Tools

Tableau

Testing & Practices

A/B testing

Methods

Experiment design

Analysis

Data modelingStatistical analysis

Other

dbtData warehousingLookerDashboard designKPI frameworksCausal inference basics