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JuWon
@ann_selle
Data Engineer, ETL Pipelines, Python, Airflow and dbt
Nigeria
English, Yoruba
About me
I build production-ready data pipelines, ELT workflows, and analytics-ready data models for startups and businesses that need reliable infrastructure. Certified in Microsoft Fabric, Power BI, and experienced with the modern data stack — Python, SQL, dbt, Apache Airflow, Spark, Databricks, Snowflake, and BigQuery. I deliver clean, documented, version-controlled solutions, not just working code. Whether you need a batch pipeline, a streaming architecture, or a data warehouse from scratch, message me before ordering and let's scope it right.
Skills
JuWon
Offline •
Average response time: 1 hour
See my services
Data ETLs
I will build an elt pipeline with python, airflow, and dbt
Work experience
Data Engineer
esports.com • Full-time
Feb 2025 - Feb 2026 • 1 yr
Built a production-grade Enterprise Medallion Lakehouse on Microsoft Fabric processing the full Online Retail II dataset across Bronze, Silver, and Gold layers, reducing data transformation time by 60% through reusable PySpark utility notebooks. Engineered an Apache Airflow-orchestrated ELT pipeline integrating 5 data sources into a Snowflake Star Schema warehouse, cutting manual data preparation effort by 80% through automated scheduling, retry logic, and incremental load patterns. Developed a dbt transformation layer with 15 modular SQL models, 30 built-in data quality tests, and full auto-generated documentation, reducing data errors caught in production to zero across all tested pipelines. Delivered 3 end-to-end Power BI solutions connected to live warehouse models, covering sales analytics, operational KPIs, and workforce reporting, each with advanced DAX measures, optimized relationships, and automated refresh.
