07/28/2026 updated

JK
100 % available

Senior Data Engineer

Warsawa, Poland
Only remote
Master's Degree in Computer Science (Systems Design)
Warsawa, Poland
Only remote
Master's Degree in Computer Science (Systems Design)

About me

Need senior devs fast? Piligrim embeds vetted EU engineers in your workflow in 48 hours with $0 upfront fees and zero financial risk. Scale effortlessly today! ? Contact: ivankhomych@piligrim.uno


Languages & Frameworks: Python, Scala, SQL, Java, PySpark, Pandas, Flask, Ray.

Cloud Platforms & Big Data: Databricks, AWS (Glue, S3, RDS, Lambda, EMR, Step Functions, Athena), GCP (BigQuery, Vertex AI, Dataproc, Cloud Functions, Dataflow, DataStream), Azure (Data Factory, Data Lake Storage Gen2 / ADLS).

Big Data Ecosystem & Tools: Apache Spark, Spark Streaming, Apache Kafka, Hadoop, Delta Lake, dbt, Apache Airflow.

Databases & Analytics: PostgreSQL, ClickHouse, Redis, MongoDB, MySQL, DynamoDB, Oracle, MS SQL, Snowflake, Aurora, OpenSearch, Delta Table, Vector Databases, BigQuery ML, Power BI, Tableau, Grafana.

DevOps, AI & Frameworks: Docker, Kubernetes, Terraform, Git (GitHub, GitLab), CI/CD (GitHub Actions, Jenkins), Claude API, Vertex AI Search for Commerce, RAG Architectures, LangChain, LlamaIndex, Agentic AI, PyTest, JIRA, Asana.

Experience

Professional experience5 - 10 years
Freelancer since2019

Languages

EnglishFluentRussianFluentUkrainianFluent

Project history

Big Data Engineer

Trinetix

Banking & Financial Services

250-500 team member

Delivered enterprise software solutions and managed distributed cloud infrastructure components.
Built scalable backend microservices and optimized cross-functional team workflows.

Data Engineer

NDA

Industry & Mechanical Engineering

10-50 team member

Designed and optimized end-to-end ETL/ELT data pipelines utilizing Python, PySpark, Databricks, and Delta Lake.
Automated and monitored data workflows using Apache Airflow to streamline execution and minimize manual work.
Optimized Spark transformations through strategic data partitioning and chunking for accelerated processing and analytics.

Data Engineer

HR Forecast
Engineered distributed data pipelines with Ray to achieve scalable data processing and analytics.
Fine-tuned parallel processing mechanisms to improve overall system throughput and scalability.
Implemented PyTest for automated data quality control and continuous pipeline validation.

Python developer

Developed robust backend services using Python, Flask, and Oracle for an internal logistics platform.
Automated business logic and data workflows with Python and SQL.
Designed and built custom API integrations between core internal business applications.

Certificates

Professional Cloud Database Engineer

Google

2026

Professional Data Engineer Certification

Google

2026

Introduction to Model Context Protocol

antropic

2026

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