Open to opportunities

Po Hei Yee

@yeepohei

Message

Entry-level data analyst leveraging Python/SQL to automate insights and improve AI text-to-SQL accuracy.

China

Message

What I'm looking for

I’m looking for a team where I can use Python and SQL to turn messy data into clear insights, automate reporting, and also contribute to applied AI work like Text-to-SQL—while growing my skills through real product impact.

I’m an entry-level Data Analyst working across data analysis, automation, and applied AI. I analyzed and cleansed sales data for an e-commerce clothing store, identifying key trends and anomalies, and I built automated Python scripts to generate weekly sales performance reports—reducing manual effort by approximately 30%.

As a freelance Data Analyst, I continued delivering analytics through focused, real-world problem solving. In school competitions, I optimized a Text-to-SQL model by implementing a novel training data matching algorithm and fine-tuning a baseline LLM—raising the overall evaluation score from 8 to 54—while also building a Big Data Travel Analysis using a Hadoop ecosystem (HDFS, Hive) with MySQL integration.

Experience

Work history, roles, and key accomplishments

Freelance Data Analyst

Naughty Thoughts

Jan 2024 - Feb 2024 (1 month)

Worked remotely as a freelance Data Analyst for Naughty Thoughts.

Data Analysis Python SQL Data Cleaning Reporting MySQL Trend Analysis Anomaly Detection

Data Analyst Intern

Naughty Thoughts

Mar 2023 - Apr 2023 (1 month)

Analyzed and cleansed sales data for an e-commerce clothing store, identifying key trends and anomalies. Built automated Python scripts to generate weekly sales performance reports, reducing manual effort by approximately 30%.

Python Data Cleaning Sales Data Analysis Trend Analysis Anomaly Detection performance reporting Data Quality