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Tatia Siria

@tatiasiria

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Data Engineer / Data DevOps at EPAM SYSTEMS

Georgia

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What I'm looking for

I am looking for a collaborative team and expanding my knowledge

At EPAM SYSTEMS / Zalando, I migrated Apache Airflow workflows to Databricks Jobs and configured daily executions. I validated data consistency between the outputs and investigated data quality discrepancies.

At EPAM SYSTEMS / VodafoneZiggo Group B.V., I worked on the Network Data Hub, developing data products and dashboards for network and platform KPIs. I used Grafana and Loki for observability and applied Apache Iceberg, Apache Spark, and Apache NiFi to data processing and lifecycle workflows.

As a freelance DataOps Engineer, I designed and deployed a real-time streaming platform with Apache Kafka and Debezium on AWS. I built Kafka Connect pipelines for PostgreSQL and downstream systems, and provisioned infrastructure with Terraform.

Earlier, at Making Science, I built data pipelines and analytics workflows for TV Campaign Analytics Platform and Data Watch. My work included AWS S3 and BigQuery integrations, SQL and Python transformations, Terraform-based deployments, and anomaly detection.

Experience

Work history, roles, and key accomplishments

Current

Engineer

Current

EPAM Systems / Zalando

Jul 2026 - Present (4 months)

Migrated existing Apache Airflow workflows to Databricks Jobs and configured scheduled daily executions. Developed SQL queries to validate data consistency and performed data quality checks during migration.

Airflow Databricks SQL Data Migration Data Quality

Data Engineer

EPAM Systems / VodafoneZiggo Group B.V.

Oct 2025 - Jun 2026 (8 months)

Designed and implemented data products with focus on data visualization, and developed Grafana dashboards and Loki-based observability views. Managed PostgreSQL databases and applied Apache Iceberg, Spark, and NiFi to improve data processing workflows.

Grafana Loki PostgreSQL Apache Iceberg Apache Spark Apache NiFi Data Visualization data transformation

DataOps Engineer

Freelance

Feb 2026 - May 2026 (3 months)

Designed and deployed a real-time data streaming platform using Apache Kafka and Debezium on AWS. Built and managed Kafka Connect pipelines and implemented Change Data Capture (CDC) with logical replication.

Kafka Debezium AWS Terraform Docker AWS ECS PostgreSQL REST APIs CDC Kafka Connect API Change Data Capture

Build Engineer

EPAM Systems / Occidental Petroleum Corp.

Jun 2025 - Aug 2025 (2 months)

Designed and maintained Terraform configurations for AWS infrastructure including ECS, EC2, ALBs, RDS, SQS, and VPC. Implemented remote state with S3 and DynamoDB locking and developed reusable Terraform modules.

Terraform AWS AWS ECS EC2 ALB RDS Amazon SQS VPC IaC S3 DynamoDB Infrastructure as Code

Data Engineer

Making Science / Gauss for TV

Dec 2022 - Nov 2024 (1 year 11 months)

Built ETL pipelines extracting data from AWS S3 and optimized them for efficiency. Automated pipeline deployments by integrating Terraform with CI/CD and wrote optimized SQL queries for campaign metrics reporting.

ETL S3 Terraform CI CD SQL Python

Data Engineer

Making Science / Data Watch

May 2021 - Dec 2022 (1 year 7 months)

Automated infrastructure deployments with Terraform on GCP and built end-to-end ingestion and transformation pipelines integrated with BigQuery. Developed anomaly detection logic and designed tools to monitor ETL processes.

Terraform GCP BigQuery ETL Anomaly Detection SQL Python