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Sandra Zajev

@sandrazajev

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Software engineer who maintained Swedbank’s high-availability data access and optimized Teradata and Oracle pipelines.

Estonia

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At Swedbank, I optimized high-volume data pipelines in Teradata and Oracle to increase daily throughput while maintaining system reliability. I also handled production incidents, package release deployments, and annual data archiving.

At AZ Trade, I served as the primary developer for a custom Warehouse Management System, handling its full SDLC from critical bug fixes to new features. I also maintained and expanded operational software connecting warehouse operations, supplier catalogs, and the e-commerce platform.

Experience

Work history, roles, and key accomplishments

ETL Operations / Maintenance

Swedbank

Oct 2021 - May 2026 (4 years 7 months)

Resolved critical production incidents promptly to guarantee continuous high availability and uninterrupted data access. Managed package release deployments and optimized high-volume data pipelines in Teradata and Oracle databases to significantly boost daily throughput without compromising system reliability.

ETL Teradata Oracle SQL Incident Management On call Support Data Archiving High Availability

Full Stack Developer

AZ Trade

Jul 2020 - Sep 2021 (1 year 2 months)

Maintained, optimized, and expanded core operational software infrastructure, ensuring seamless data integration across warehouse operations, supplier catalogs, and the e-commerce platform. Served as the primary developer for the custom Warehouse Management System (WMS), handling the full SDLC from critical bug fixes to implementing new features.