Chih Wei Chang
Senior BI/Data Engineer
Taipei
Summary
Results-driven Senior BI/Data Engineer with 10+ years of experience in building scalable data solutions. Expert in AWS cloud architecture, ETL pipeline development, and BI platform implementation. Proven track record of reducing operational costs by 15-70% and improving data processing efficiency by 50%.
Overview
10
10
years of professional experience
5
5
years of post-secondary education
2
2
Languages
Work History
Senior BI/Data Engineer
BTSE Crypto Exchange
10.2022 - Current
- Built enterprise data warehouse from scratch using AWS Redshift, Glue, and Lambda, improving BI insights by 20%
- Architected data pipelines with Airflow/dbt/Docker, achieving 50% efficiency improvement
- Developed automated BI dashboards and alerts for C-level reporting, reducing manual work by 50%
- Mentored team members, increasing productivity by 15%
Senior BI Engineer
ETech Pro
09.2020 - 10.2022
- Consolidated 7 data sources into unified BI platform, enhancing data accessibility
- Implemented finance dashboards reducing reporting time by 70%
- Created executive-level visualizations using Tableau and Power BI
Senior BI Engineer
Swag
01.2020 - 04.2020
- Engineered Nginx-Lua proxy solution for Google Pubsub, cutting Mixpanel costs by 15%
- Developed Apache Beam pipeline for real-time data streaming
Data Engineer
Foxconn
10.2017 - 12.2018
- Built recommendation models increasing ad revenue
- Processed 1TB daily data using Hadoop ecosystem
- Developed ETL workflows between Hadoop and RDBMS
Senior BI Developer
Taiwan Star
08.2016 - 09.2017
- Implemented churn prediction model, reducing customer churn by 5%
- Built automated KPI monitoring system for C-level executives
BI Developer
Bank of America / InComm
12.2014 - 06.2016
Education
MBA - Project Management
Brenau University
01.2013 - 01.2014
Bachelor's Degree - undefined
Providence University
01.2007 - 01.2011
Skills
- AWS (Redshift, Glue, Lambda)
- Hadoop
- Hive
- Apache Beam
- Airflow
- Tableau
- Power BI
- Data Warehousing
- ETL/ELT
- SQL/Python
Core Competencies
AWS (Redshift, Glue, Lambda), Hadoop, Hive, Apache Beam, Airflow, Tableau, Power BI, Data Warehousing, ETL/ELT, dbt, Python, SQL, Lua, Docker, Git, Cost Optimization, Process Automation, Real-time Analytics
Timeline
Senior BI/Data Engineer
BTSE Crypto Exchange
10.2022 - Current
Senior BI Engineer
ETech Pro
09.2020 - 10.2022
Senior BI Engineer
Swag
01.2020 - 04.2020
Data Engineer
Foxconn
10.2017 - 12.2018
Senior BI Developer
Taiwan Star
08.2016 - 09.2017
BI Developer
Bank of America / InComm
12.2014 - 06.2016
MBA - Project Management
Brenau University
01.2013 - 01.2014
Bachelor's Degree - undefined
Providence University
01.2007 - 01.2011
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