Projects

ETL pipelines, data transformations, and infrastructure-as-code, from enterprise banking to side projects.

Coal Mining ETL Pipeline

A medallion-architecture (Bronze → Silver → Gold) ETL pipeline for coal mining ritase (hauling trip) data, orchestrated with Apache Airflow and processed with PySpark over MinIO object storage, landing aggregated marts in a PostgreSQL warehouse. Fully Dockerized.

Data Engineering

ETL/ELT

CSV Cleansing ETL

A Python ETL pipeline that reads a messy CSV, deduplicates and normalizes the rows, loads clean and rejected records into separate DuckDB tables, and exports the results to JSON and CSV. Dockerized and covered by 17 unit tests.

Data Engineering

ETL/ELT

IDR FX Advisor

A daily ELT pipeline that helps Indonesians decide when to exchange IDR to foreign currency, sending 5-level Discord signals (STRONG BUY → STRONG WAIT) based on percentile rank and multi-window z-score analysis. Built with Airflow, dbt, BigQuery, and Terraform.

Data Engineering

ETL/ELT

Permata Bank – Antasena ETL Pipelines

Developed and maintained 40–50 stored procedures and ETL pipelines using SSIS and SQL Server for Permata Bank's Antasena platform, covering 6 projects in enterprise banking environments.

Data Engineering

ETL/ELT

Backend

PeduliLindungi – COVID-19 Data Mining

Contributed to COVID-19 data mining pipeline for PeduliLindungi, a government contact tracing app used by millions of Indonesians during the national pandemic response.

Data Engineering

Machine Learning

IndoBERT Indonesian Text Corrector

Developed an Indonesian text corrector using IndoBERT transformer model to improve labeling accuracy for Government Sentiment Analysis on social media data.

NLP

Machine Learning

Coal Mining ETL Pipeline

Data Engineering

ETL/ELT

CSV Cleansing ETL

Data Engineering

ETL/ELT

IDR FX Advisor

Data Engineering

ETL/ELT

Permata Bank – Antasena ETL Pipelines

Developed and maintained 40–50 stored procedures and ETL pipelines using SSIS and SQL Server for Permata Bank's Antasena platform, covering 6 projects in enterprise banking environments.

Data Engineering

ETL/ELT

Backend

PeduliLindungi – COVID-19 Data Mining

Contributed to COVID-19 data mining pipeline for PeduliLindungi, a government contact tracing app used by millions of Indonesians during the national pandemic response.

Data Engineering

Machine Learning

IndoBERT Indonesian Text Corrector

Developed an Indonesian text corrector using IndoBERT transformer model to improve labeling accuracy for Government Sentiment Analysis on social media data.

NLP

Machine Learning