Hey, I'm Kai Shiun
I'm a critical and curious problem-solver adept at crafting machine learning solutions that deliver tangible business value.
Experience Timeline
Graduation
Machine Learning Intern
Data Science Intern
Chief Operations Officer
Business Analyst Intern
Combat Engineer Officer
Completed Junior College
Featured Projects
Built a scalable ETL pipeline with Apache Spark to ingest and preprocess large-scale structured and semi-structured data into a cloud-based data lake (AWS S3). Enriched the dataset with external sources including SORA interest rates, BTO launch timelines, and geospatial data on top primary schools. Engineered market-relevant features and trained predictive models using Random Forest, XGBoost, and CatBoost.
Built a churn prediction ensemble model (Random Forest + Logistic Regression) that achieved 79% precision and 95% recall—enabling targeted retention campaigns. Analyzed discount impact on customer spend to shape year-end promotions. Developed a recommendation engine using word embeddings and cosine similarity to boost cross-sell conversions.
Developed a full-stack dashboard that processes CSV uploads and enables natural language chat for on-demand chart generation using LLMs. Integrated time series forecasting to project revenue, ad spend, and new account creation up to 4 months ahead. Included auto-generated PDF reports with descriptive analytics and built a business-focused frontend to surface key marketing insights for decision-makers.
What People Say
If Kai got a job offer elsewhere, I would give an excellent recommendation for a Data Science internship position, commend his understanding of statistics and data science techniques, commend his work ethic, commitment, and work culture.
Camilo Lagos
Head of Data Science • CONXAI Technologies GmBH
Since joining our team, Kai Shiun has been a vocal and outspoken individual, constantly operating with the team's best interest at heart. A critical thinker, he is unafraid to clarify doubts and probe for further details during team discussions. Regarding his assigned work, he is capable of taking the initiative to direct his own projects and return promptly with his assigned tasks.
Veronica Low
Founder & President • ASEAN Business Youth Association
I am happy to provide a testimonial for Liew Kai Shiun, a group fitness instructor at F45 Training Spottiswoode. Having been with F45 Spottiswoode for over a year conducting 200+ group classes, I can testify to the standard of work that Kai Shiun has demonstrated – displaying professionalism through his punctuality, adaptability, and strong interpersonal skills.
Sita Sah
Director • F45 Training Spottiswoode