harun mbaabu

Analytics Engineer

Andela•  January 2021 - March 2023

I have designed a comprehensive data infrastructure on AWS, which includes a data lake on S3 storage and a data warehouse using Redshift. I have developed ETL processes to efficiently load data from various sources such as Postgres, AWS RDS, and AWS DynamoDB into the data lake. In the data warehouse, I have designed database objects to support optimal business reporting and ensured the availability of accurate and timely data. I have also performed data modeling and ongoing maintenance to ensure the smooth operation of both the data warehouse and data lake. To streamline operations, I have automated data movements and set up daily email notifications to keep stakeholders informed. Additionally, I have taken on management responsibilities by mentoring and supporting junior data engineers, enabling their growth and overcoming any obstacles they may face.

Senior Data Engineer

Koko•  June 2022 - December 2022

1). Designed, implemented, and supported KOKO’s new modern data infrastructure. 2). Designed and implemented ETL pipelines with Python Pyspark and AWS Glue. 3). Helped recruit and manage two more data engineers for Indian offices. 4). Maintained and secured data across national boundaries through multiple data centers and AWS regions. 5). Built systems to track data quality and consistency, ensuring that our data is accurate & up to date.