data analysis
Blank or Zero? Why Missing Values Change Your Average
See how blanks, zeros and empty-string formulas change spreadsheet averages, and report missing sales without treating unknown values as zero.
Data Analytics · Systems · AI Engineering
Decades of Experience. A Modern, Data-Driven Approach.
Leveraging a career that spans manufacturing, education, and urban mobility, I specialize in solving complex challenges. My focus is on using data to find clarity and drive measurable growth, regardless of the industry.
Grain First
Table & Metric Clarity
4 Pillars
Metrics · Data · Reporting · Ownership
AI + Ops
Production Systems & RAG
analytics-workbench — Live Preview
Interactive01 · Grain FirstVERIFIED
Define What One Row Represents Before Counting
Conflicting totals usually start when spreadsheets mix orders, line items, and payments in the same view. Declaring the table grain first restores trust in every downstream metric.
Grain: 1 row per completed_order_id (net of refunds, UTC close)
Case Studies & Production Systems
Systems built for operational clarity and measurable outcomes.
Selected case studies across business development automation, educational transformation, and AI-assisted career learning.
Next.js · Supabase · AI
CareerTalkLab
An existing English-learning LMS, with a wider data and software career-learning direction planned.
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Operations · EdTech
Digital Transformation in Crisis
Leading a language school's complete pivot to online learning during COVID-19.
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Python · AI Pipeline
BD Automation Suite
A modular Python pipeline that automates multi-stream business development, from prospect research to AI-drafted outreach.
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Operator & Builder Perspective
Real-world operations meet disciplined data and AI systems.
With a unique blend of hands-on manufacturing expertise, educational leadership, and data analytics skills, I bring a comprehensive perspective to every project. My approach combines decades of real-world experience with modern technological solutions to deliver tangible results.
About Me
Focus AreasSMB Analytics · Grain First · AI
MethodologyClear Definitions & Owned Action
Community LabCareerTalkLab (A1–C1 + Data)
Writing & Field Notes
Practical essays on small-business analytics, Grain First, and building CareerTalkLab.
Field notes on turning messy spreadsheets into reliable decisions, alongside essays on AI engineering and language pedagogy.
Data Audit
Duplicate Sales Rows or Legitimate Order Lines?
Repeated order IDs can be legitimate line items. Use a line-level key, confirm duplicates against the source, and reconcile every row before deleting.
Data Audit
A Repeatable Workflow for Cleaning Business Spreadsheet Data
Keep an untouched export, log cleaning changes and exclusions, and use totals plus source-row checks to prove that no business records disappeared.