Dmitriy Kostyanetskiy Email & Phone Number

Москва, Россия

Development of new systems from scratch based on microservice architecture:• SWIFT transfer investigation• Dispute handling for SBP (C2B, B2B) transactions• Implemented a new system that increased the level of process automation by 30%, reducing the timefor key operations from 2 hours to 30 minutes, and boosting overall team productivity by 15%• Successfully migrated over 10 million records to the Datalake, centralizing data storage and reducingthe time for analytical queries from 1 hour to 15 minutes, significantly improving data access for businessanalytics• Optimized key SQL queries, resulting in a 4x speed increase (from 2 seconds to 0.5 seconds), reducingthe database load and improving the responsiveness of the application for end users

Moscow, Moscow City, Russia

Outsourcing in Tinkoff Bank• Increased test coverage from 0% to 70%, significantly improving the stability and reliability of thecodebase. This helped reduce the number of production bugs by 30% and accelerated the identification ofissues during development• Created a custom testing framework for Groovy scripts, based on the ScriptEngine library andTestContainers. This framework enabled automated testing of complex script logic, reducing manualtesting time by 50% and ensuring higher script execution reliability• Successfully integrated a Maven build system for a legacy project, streamlining the build anddependency management processes. Additionally, implemented a continuous integration (CI) pipelinethat reduced the time required for manual deployments by 40%, while ensuring more frequent and stablereleases

Moscow, Russia

Participated in the development of a web application for managing database of clients and their bank accounts.• Refactored the application for Java 8, improving code maintainability and reducing the codebase by 15%• Migrated async processes to Kafka, boosting message throughput by 50% and reducing delivery delaysby 20%• Built an in-house authorization system, enhancing security and reducing incidents by 25%, ensuringregulatory compliance

Moscow, Russian Federation

Outsourcing in IBS - one of the largest Russian IT companies in consulting, IT outsourcing and software development with assets of more than $ 41 billion.• Created an integration with Jira Test, reducing manual reporting time by 90% and ensuring real-timevisibility into test results• Trained 5+ manual testers, helping them adopt automation tools, which increased test coverage by 40%across their projects