Roman Legeza
Data Engineer, Software Engineer | GC holder | Expert in Data Analytics, Data Visualization and Web Development. Big Data, SQL, Python, Airflow, Spark, Databricks, Tableau,AWS.
- Role
- Lead Data Engineer at Meta
- Location
- Austin, TX, US
- LinkedIn followers
- 500 followers
About Roman Legeza
Experienced Data Engineer with a Bachelor of Engineering in Computer Science and 15+ years of experience in software development and business intelligence. Highly proficient in data analysis, engineering and visualization. Skilled in troubleshooting, software testing, and system validation. Proficient in SQL, Python, Presto, Airflow, Spark, Databricks, Tableau, AWS.In my current role, I work remotely as a contingent worker for Meta, where I design and implement advanced BI solutions based on Big Data technology stack such as Presto, Hive and Airflow/Dataswarm. I also create and maintain complex ETL pipelines using Python and a large set of BI reports using Tableau, as well as develop and support applications using Django and ReactJS. I communicate effectively with customers, clarify technical details of required products, and work in conditions of limited time and rapidly approaching deadlines. I am a team player, a quick learner, and a detail-oriented professional, who is always eager to develop my skills and learn new technologies.I am fully authorized to work in the United States.
Experience
Lead Data Engineer
Jan 2019 — Present · San Diego, CA, US
contract through EPAM Systems)- Engineered complex pipelines and dashboards utilizing SQL, Python, Presto, Dataswarm and Tableau improving data visualization effectiveness by 40% and providing a clear picture of quality performance in different regions enabling top management to easily access and make decisions based on the data- Saved Meta’s SOE Infrastructure team time by developing Hack PHP/ReactJS application reducing timespent on fixing input errors by 30% and reducing development and maintenance time by 40%- Built a Workplace Chat chatbot for the Meta\'s Hardware Quality Engineers for monitoring quality issues using Meta’s API, Dataswarm, and Python- Implemented a unified Tableau extension to standardize the style across all dashboards using ReactJS that significantly saved time for our engineers, streamlining the dashboard customization process and enhancing productivity by 15%- Designed and implemented extensions for the internal Meta’s Tasks system using Hack PHP and ReactJS to simplify tracking tasks and performance of our team- Empowered team members through SQL, Python, and process guidance, enabling them to handle complex tasks independently, leading to improved data performance
Education
Kazakh Russian State University, Aktobe, Kazakhstan
Bachelor of Computer Science and Software, Software Development
2006 — 2009
City College of Aktobe, Kazakhstan
AS in Computer Science
1999 — 2003
Skills
- Agile Methodologies
- Borland Delphi
- Json
- Programming
- Oracle Bi Ee
- Sql
- Databases
- Oracle
- Xml
- Rest
- Oracle Forms
- Web Development
- Oracle Warehouse Builder
- Tortoise Svn
- Eclipse
- Pl/Sql
- Javascript
- Software Development
- Php
- Oracle Pl/Sql Development
- Oracle Application Express
- Jquery
- Mysql
- Oracle Reports
- Oracle Report Builder
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