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Bar Kotlyarov

Bar Kotlyarov

Certified

Data Engineer

Smartstone | Israel

Technologies

My Portfolio Highlights

My New Course

Introduction to SQL

My New Course

Introduction to SQL

"Data transformation isn't magic; it's the careful orchestration of logic and code."

My Work

Take a look at my latest work.

github

Airflow ETL Pipelines for Sales Mart and Customer Retention

PythonSQLDocker
github

Airflow - MongoDB - AWS S3 - PostgreSQL ETL Data Warehouse Project

PythonSQLDocker
github

Docker-Airflow-ETL-AWS-Vertica-Python-SQL-Data-Analysis

PythonSQLDocker
github

Airflow ETL Pipelines for Sales Mart and Customer Retention

PythonSQLDocker

My Certifications

These are the industry credentials that I’ve earned.

Data Engineer Associate

Data Engineer Associate

Other Certificates

Coursera Google Data Analytics Professional

DataCamp Course Completion

Take a look at all the courses I’ve completed on DataCamp.

Courses

Introduction to Python
Introduction to SQL
Intermediate SQL
Intermediate Python

My Work Experience

Where I've interned and worked during my career.

Smartstone.md | Jan 2023 - Present

Data Engineer

• Designed and implemented a scalable data warehouse with AWS Redshift and NoSQL (MongoDB), consolidating historical production data for in-depth analysis and insights into efficiency trends. • Built interactive dashboards in Tableau leveraging data from AWS Redshift to visualize key performance indicators (KPIs)and empower production managers with data-driven decision-making. • Automated data cleaning and ETL processes using Apache Airflow and Python, ensuring data quality, accuracy, and consistency while saving analyst time and minimizing errors. • Collaborated with process engineers to identify and track critical quality metrics, implementing Apache Spark for large-scale data processing and analysis, resulting in a 10% decrease in production defects. • Integrated production data with supply chain and inventory systems using AWS S3 and Apache Kafka, streamlining material flow, reducing waste, and optimizing inventory management. • Leveraged AWS EMR (Hadoop) and Apache Spark to analyze energy consumption data, identify inefficiencies, and propose changes that led to a 15% cost reduction. • Packaged and deployed data pipelines using Docker containers managed by Kubernetes on AWS ECS, ensuring scalability and reliability.
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My Education

Take a look at my formal education

Master's of Science in Computer ScienceSlavonic University | 2019
Bachelors in Business AdministrationSlavonic University | 2017

About Me

Bar Kotlyarov

Results-oriented ex-Manufacturing Manager now in data. Skilled in SQL, Python, data modeling for efficiency gains. Proven ability to drive insights from data & boost operations. Excited to use this unique skillset in a data-focused role.

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