Silverbird | A global business account

Transformed Data Swamp on Snowflake into Modern Data Warehouse on PostgreSQL:
➢ Migrated scattered data pipelines from cron scripts and Jupyter notebooks to Airflow
➢ Unified design for integrations with various data sources (APIs, MySQL, spreadsheets, blob files)
➢ Designed datamarts to implement Self-Service Analytics
➢ Automated crucial financial reporting decreasing probability of multi-million dollar fines

Data Engineer

Aero eCommerce Agency

New Data Platform project for online retailer:
➢ Designed architecture for Data Platform with Clickhouse/Greenplum stack
➢ Created batch and real time data integrations using Airflow, Nifi and dbt
➢ Designed Data Vault schema combining data from 4 different sources 
➢ Collaborated with Product Analysts to design 5 datamarts for calculating over 60 product metrics
➢ Implemented Zabbix for observability

Data Engineer / Architect

X5 Retail Group

As Data Engineer in core ETL team:
➢ Supported existed batch & streaming integrations from various sources (RDBMS, Kafka, APIs etc) to Data Lake on Hadoop with Hive, NIFI, Spark, PostgreSQL, Python
➢ Developed 2 new real-time integrations using NIFI
➢ Decreased time and resources for restoring files that failed during streaming integrations by creating dedicated mechanism to restore them

Business & Decision

DWH support & development:
➢ Found and fixed critical bugs in SAS Macros and Oracle SQL queries that were causing recurring errors
➢ Made adjustments to ELT processes that prevented their total failures in case of database accidents
➢ Implemented Data Quality monitoring which allowed to discover incorrect calculations of datamarts then fixed SQL scripts to get rid of them

DWH Developer

Automating financial reports for banks:
➢ Developed SQL scripts in Teradata to calculate reports based on business requests
➢ Automated report calculation with SAS Data Integration Studio

Junior Data Analyst

I am a Data Engineer with over 5 years of experience working with Data.

My passion are stable and reliable data pipelines that leverage data to drive insights and facilitate informed decision-making. I am eager to contribute my expertise and make a positive impact in a dynamic and data-driven organizations.

Contact me:
email -- artyom.grishechko@gmail.com
telegram -- https://t.me/sonofendor

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