Dorian Sierra

About Dorian Sierra

Experienced professional with proficiency in building data engineering and software solutions with various languages and technologies. Driven to optimize processes, improve efficiency, and enhance customer satisfaction.Languages – English, Spanish, Portuguese

Experience

1. Data Engineer

   Humana

   Oct 2017 — Present · Tampa/St. Petersburg, FL, US

   Migrated ETL packages to scalable data pipelines using Python and SQL, reducing complexity and maintenance efforts. Independently designed and developed a backend data processing system in MSSQL that feeds data to internal and external sales agent applications, composed of data models, a rules engine, stored procedures, views, triggers, nightly jobs, and a data management CLI built with Python. Increased yearly data output and loading 20x with the new system.Implemented monitoring systems to address data loading and data quality checks proactively.Built automation processes to address manual file creation, delivery, and email notifications.

Education

• Westchester Business Institute

  Associate in Occupational Studies, Computer Systems Management

• Florida Metropolitan University

  Bachelors of Science, Computer Information Science

Skills

• Sql Server Reporting Services (Ssrs)
• Weblogic
• Microsoft Sql Server
• Websphere
• Databases
• Extract, Transform, Load (Etl)
• Oracle
• Software Development
• Agile Methodologies
• Sql
• Asp.net
• Transact-Sql (T-Sql)
• Vba
• Business Intelligence
• Pl/Sql
• .net Framework
• C#
• .net
• Unix
• Sql Server Integration Services (Ssis)
• Java
• Database Design
• Sharepoint
• Iis