Ukraine's #1 job service
Георгій
Scala/Big Data-розробник
- Considering positions:
- Scala/Big Data-розробник, Python-програміст, Data engineer
- Age:
- 24 years
- City of residence:
- Kharkiv
- Ready to work:
- Kharkiv, Remote
Contact information
The job seeker has entered a phone number , email and LinkedIn.
Name, contacts and photo are only available to registered employers. To access the candidates' personal information, log in as an employer or sign up.
You can get this candidate's contact information from https://www.work.ua/resumes/16386289/
Uploaded file
Quick view
version
This resume is posted as a file. The quick view option may be worse than the original resume.
Georgiy Kozak
Scala/BigData Engineer
Summary
I'm a Scala Engineer with a mathematical background and 2+
years of commercial experience, specializing in building
Contacts production ETL/ELT pipelines and back-end services.
[open contact info ](look above in the "contact info" section)
Experience
[open contact info ](look above in the "contact info" section)
Kharkiv, Ukraine 02/2026 - Present
https://t.me/GeorgeKozak Data Engineer | NDA (Fintech)
Developed and maintained production ETL pipelines using Python,
https://github.com/ Airflow and PySpark. Designed and optimized a data warehouse in
GeorgiyKozak PostgreSQL, including schema design and query performance tuning.
[open contact info ](look above in the "contact info" section) Built BI dashboards in Metabase to support business decision-making.
kozak-942968241
07/2025 - 12/2025
Scala/Big Data Engineer | StackTome
Skills D2C e-Commerce platform
Implemented, deployed and maintained production ETL/ELT
Scala Python pipelines for processing eCommerce data using Scala and Apache
Databases: PostgreSQL, Spark • Implemented complex data transformations with Spark SQL,
using Parquet and Delta tables • Diagnosed and resolved data
MongoDB, MS SQL
quality issues, SQL problems and failing Spark jobs in production •
Typelevel: Cats, Cats Effect, Led a major upgrade of the core data processing module: migrated
Http4s Apache Spark from 3.5 to 4.0 and upgraded the project from Scala
Slick Play Framework 2.12 to Scala 2.13 with aligned dependencies • Integrated multiple
external platforms (Shopify, Trustpilot, Centra, Klaviyo, Google APIs)
Apache Spark AWS S3
via REST and GraphQL • Worked with AWS S3-compatible object
Sbt Git Docker storage using Apache Spark
Jenkins ScalaTest
08/2024 - 07/2025
Munit
Scala Engineer | Center Cruises
Languages • Developed back-end services and APIs for the cruise company’s
website, supporting bookings and customer-facing features •
Implemented data import pipelines for multiple formats (JSON, XML,
English - B2 (upper intermediate)
CSV) ensuring data quality for supplier information • Worked on
integration with internal accounting platform via Protobuf, enabling
Ukrainian - native
automated synchronization of booking and cruise sales data.
Russian - native Developed and maintained website for data display
09/2023 - 06/2024
Robotics and Programming Teacher | Robot School
Java, Python, Robotics
08/2022 - 08/2023
Scala Engineer | Wolkov Consulting
Developed back-end and web services across multiple client projects:
• Wrote unit and integration tests to ensure code quality and
reliability • Implemented integrations with third-party libraries and
APIs • Assisted team members with their tasks • Participated in code
reviews and technical discussions
08/2021 - 11/2021
Trainee Java Developer l EPAM Systems
Education
Università degli Studi dell'Aquila (Italy)
Master | Applied Mathematics
2023 - 2025
V. N. Karazin Kharkiv National University
Master | Applied Mathematics
2023 - 2025
V. N. Karazin Kharkiv National University
Bachelor | Mathematics and Computer Science
2019 - 2023
Coursera courses:
Big Data Analysis with Scala and Spark
Functional Programming Principles in Scala
Parallel Programming in Java
Software Development Processes and Methodologies
SkillSoft courses:
Getting Started with Apache Kafka
Integrating Kafka with Python & Using Consumer Groups
Scala/BigData Engineer
Summary
I'm a Scala Engineer with a mathematical background and 2+
years of commercial experience, specializing in building
Contacts production ETL/ELT pipelines and back-end services.
[
Experience
[
Kharkiv, Ukraine 02/2026 - Present
https://t.me/GeorgeKozak Data Engineer | NDA (Fintech)
Developed and maintained production ETL pipelines using Python,
https://github.com/ Airflow and PySpark. Designed and optimized a data warehouse in
GeorgiyKozak PostgreSQL, including schema design and query performance tuning.
[
kozak-942968241
07/2025 - 12/2025
Scala/Big Data Engineer | StackTome
Skills D2C e-Commerce platform
Implemented, deployed and maintained production ETL/ELT
Scala Python pipelines for processing eCommerce data using Scala and Apache
Databases: PostgreSQL, Spark • Implemented complex data transformations with Spark SQL,
using Parquet and Delta tables • Diagnosed and resolved data
MongoDB, MS SQL
quality issues, SQL problems and failing Spark jobs in production •
Typelevel: Cats, Cats Effect, Led a major upgrade of the core data processing module: migrated
Http4s Apache Spark from 3.5 to 4.0 and upgraded the project from Scala
Slick Play Framework 2.12 to Scala 2.13 with aligned dependencies • Integrated multiple
external platforms (Shopify, Trustpilot, Centra, Klaviyo, Google APIs)
Apache Spark AWS S3
via REST and GraphQL • Worked with AWS S3-compatible object
Sbt Git Docker storage using Apache Spark
Jenkins ScalaTest
08/2024 - 07/2025
Munit
Scala Engineer | Center Cruises
Languages • Developed back-end services and APIs for the cruise company’s
website, supporting bookings and customer-facing features •
Implemented data import pipelines for multiple formats (JSON, XML,
English - B2 (upper intermediate)
CSV) ensuring data quality for supplier information • Worked on
integration with internal accounting platform via Protobuf, enabling
Ukrainian - native
automated synchronization of booking and cruise sales data.
Russian - native Developed and maintained website for data display
09/2023 - 06/2024
Robotics and Programming Teacher | Robot School
Java, Python, Robotics
08/2022 - 08/2023
Scala Engineer | Wolkov Consulting
Developed back-end and web services across multiple client projects:
• Wrote unit and integration tests to ensure code quality and
reliability • Implemented integrations with third-party libraries and
APIs • Assisted team members with their tasks • Participated in code
reviews and technical discussions
08/2021 - 11/2021
Trainee Java Developer l EPAM Systems
Education
Università degli Studi dell'Aquila (Italy)
Master | Applied Mathematics
2023 - 2025
V. N. Karazin Kharkiv National University
Master | Applied Mathematics
2023 - 2025
V. N. Karazin Kharkiv National University
Bachelor | Mathematics and Computer Science
2019 - 2023
Coursera courses:
Big Data Analysis with Scala and Spark
Functional Programming Principles in Scala
Parallel Programming in Java
Software Development Processes and Methodologies
SkillSoft courses:
Getting Started with Apache Kafka
Integrating Kafka with Python & Using Consumer Groups
Similar candidates
-
Разработчик игр
40300 UAH, Ivano-Frankivsk, Lviv , more 4 cities -
Javascript-програміст
Lviv, Remote -
Разработчик игр
Remote -
JavaScript-програміст
Remote -
Web-программист
99000 UAH, Kyiv, Remote -
PHP Developer, Software Engineer
Remote
Compare your requirements and salary with other companies' jobs:
The candidate's resume is posted at https://www.work.ua/resumes/16386289/