Looking for a job

Vitali Krivar

@vitalikrivar

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I build and optimize Oracle and PostgreSQL database systems for high-volume banking transactions.

Germany

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What I'm looking for

I'm open to Oracle or PostgreSQL database development roles across the EU or remotely from Germany, particularly in production banking and transaction-heavy systems.

I've spent 10+ years building production database systems for banking, from core lending and card accounts to transaction-heavy integrations.

At T-Bank, I moved lending functions from a Java/Oracle monolith to PostgreSQL services, converting 15+ database objects and removing legacy-schema dependencies. I also built concurrent indexes on million-row production partitions without client downtime.

At Rosbank, I migrated a live loan book containing hundreds of thousands of contracts, financial accounts, and FX rates to PostgreSQL. I designed an Oracle view layer and load modules, and built reliable Oracle AQ and Kafka processing for DWH feeds and customer statements.

Previously at Bank VTB Kazakhstan, I reduced card-account posting time by about 50% through SQL tuning and indexing. I also delivered an XML gateway for government data exchange and a Zero Balancing solution for corporate clients.

Experience

Work history, roles, and key accomplishments

Senior Developer — Oracle / PostgreSQL

T-Bank (formerly Tinkoff Bank)

Jan 2025 - Mar 2026 (1 year 2 months)

Converted Oracle stored procedures and database objects to support migration of lending functions to PostgreSQL, and built indexes concurrently on production tables to avoid downtime.

Oracle Pl SQL PostgreSQL Data Migration Indexing Performance Optimization

Senior Developer — Oracle / PL/SQL

Rosbank

Sep 2020 - Dec 2024 (4 years 3 months)

Migrated a live loan book of hundreds of thousands of contracts to PostgreSQL and designed an Oracle view layer and load-model modules for data extraction. Implemented PL/PLUS dequeue handlers on Oracle AQ for Kafka integration.

Oracle Pl SQL PostgreSQL Data Migration Oracle AQ Kafka PL PLUS DWH

Senior Developer — Oracle / PL/SQL

Bank VTB (Kazakhstan)

Oct 2016 - Aug 2020 (3 years 10 months)

Reduced card-account transaction posting time by about 50% through SQL tuning and index addition. Built an XML gateway for government data exchange and implemented Zero Balancing for corporate clients.

Oracle Pl SQL SQL Tuning XML Integration Performance Optimization