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Python Backend Developer with a background in cloud-native development and data engineering. I have experience designing and maintaining ETL pipelines, serverless applications, and distributed data workflows using AWS (Lambda, Step Functions, Glue, DynamoDB) and GCP (Dataplex, Data Catalog, BigQuery). At EPAM Systems, I worked on enterprise data platforms and open-source tooling, improving test coverage, automation, and deployment reliability. AWS Certified Developer – Associate, with a strong interest in system design, data migration, and backend best practices.…Python Backend Developer with a background in cloud-native development and data engineering. I have experience designing and maintaining ETL pipelines, serverless applications, and distributed data workflows using AWS (Lambda, Step Functions, Glue, DynamoDB) and GCP (Dataplex, Data Catalog, BigQuery). At EPAM Systems, I worked on enterprise data platforms and open-source tooling, improving test coverage, automation, and deployment reliability. AWS Certified Developer – Associate, with a strong interest in system design, data migration, and backend best practices.

Olena Zhelezova

Back-End Developer, Full Stack Developer, Web Developer

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Python Backend Developer with a background in cloud-native development and data engineering. I have experience designing and maintaining ETL pipelines, serverless applications, and distributed data workflows using AWS (Lambda, Step Functions, Glue, DynamoDB) and GCP (Dataplex, Data Catalog, BigQuery). At EPAM Systems, I worked on enterprise data platforms and open-source tooling, improving test coverage, automation, and deployment reliability. AWS Certified Developer – Associate, with a strong interest in system design, data migration, and backend best practices.…Python Backend Developer with a background in cloud-native development and data engineering. I have experience designing and maintaining ETL pipelines, serverless applications, and distributed data workflows using AWS (Lambda, Step Functions, Glue, DynamoDB) and GCP (Dataplex, Data Catalog, BigQuery). At EPAM Systems, I worked on enterprise data platforms and open-source tooling, improving test coverage, automation, and deployment reliability. AWS Certified Developer – Associate, with a strong interest in system design, data migration, and backend best practices.

Available to hire

Python Backend Developer with a background in cloud-native development and data engineering. I have experience designing and maintaining ETL pipelines, serverless applications, and distributed data workflows using AWS (Lambda, Step Functions, Glue, DynamoDB) and GCP (Dataplex, Data Catalog, BigQuery). At EPAM Systems, I worked on enterprise data platforms and open-source tooling, improving test coverage, automation, and deployment reliability. AWS Certified Developer – Associate, with a strong interest in system design, data migration, and backend best practices.

Skills

Experience Level

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Software Developer at EPAM Systems

April 1, 2025 - November 1, 2025

Co-developed an open-source solution to automate metadata migration between Google Cloud's Data Catalog and Data Plex for enterprise-scale clients. Designed and implemented custom ETL pipelines to extract, transform, and transfer metadata, ensuring scalability and reliability. Leveraged BigQuery for data processing and data quality validation. Automated deployment using Unix shell scripting and CI/CD pipelines to enable seamless integration and delivery. Authored clear, structured documentation supporting maintainability and cross-team collaboration.

Junior Software Developer at EPAM Systems

February 1, 2024 - March 1, 2025

Contributed to design and maintenance of a data archival platform using AWS-native services (Lambda, Step Functions, RDS, DynamoDB). Implemented ETL workflows orchestrated via AWS Step Functions, ensuring reliable and fault-tolerant data processing. Worked with PySpark (AWS Glue) for distributed data transformations and SQL performance tuning, optimizing data reads with partitioning. Advocated Agile and CI/CD practices, integrating testing and deployment pipelines with GitHub Actions, Jenkins, and SonarQube. Improved test coverage with a structured unit-testing approach (89% in a codebase). Conducted PoC developments to validate architecture decisions for large-scale infrastructure apps. Authored SDLC documentation for architecture, testing, and deployment workflows.

Software Developer Intern at EPAM Systems

April 1, 2023 - January 1, 2024

Contributed to development of internal educational projects using Python and Flask in an Agile environment with peers and mentors.