Patcharamon Bunlaue

Recent graduate in Data Science and Business Analytics with internship experience in Data Engineering and Data Analytics. Skilled in Python, SQL, ETL pipeline development, and data processing using AWS services such as S3, Glue, Lambda, and RDS. Experienced in workflow orchestration with Kestra and Pentaho, as well as developing data-driven applications including an LLM-based RAG chatbot.

Interested in data engineering, workflow automation, and leveraging data to support business decision-making.

Data Analytics Intern at Big C Supercenter Public Company Limited (BJC Group) (2025-07 – 2025-10)

• Gathered and analyzed business requirements with the supply chain team to support top-item allocation for promotional campaigns, and Developed automated Power BI dashboards connected to a PostgreSQL Data Mart, reducing manual reporting efforts and improving allocation accuracy for promotional campaigns.
• Applied SQL and DAX to maintain data integrity and optimize dashboard performance, enabling automated data synchronization and improving allocation accuracy while reducing manual processes.

Data Engineer Intern at Be1 digital co. ltd (2025-12 – 2026-02)

• Collaborated with the team to optimize ETL pipelines using Kestra, transitioning data ingestion from direct PostgreSQL extraction to a MinIO staging layer to enhance architectural scalability.

Developed

Day-1 ingestion logic and refined Data Warehouse and Data Model layers to support evolving business reporting requirements.

• Developed and executed data migration workflows in Kestra to transfer data from Hadoop (HDFS) and PostgreSQL to MinIO and validated the migrated data to ensure consistency and completeness across source and target systems.
• Built and optimized data migration pipelines from PostgreSQL to MinIO using DuckDB, supporting date-based ingestion and full historical backfill, with data stored as partitioned Parquet files (by date) for efficient and scalable data processing.
• Developed complex SQL queries across multiple relational tables to generate analytical reports, supporting business decision-making, and collaborated with developers and business analysts to deliver data-driven insights.

Bachelor of Science in Data Science and Business Analytics – King Mongkut's Institute of Technology Ladkrabang (2026)