Developed the forex trading platform Forex4you.▪ Refactoring to the new technology stack▪ Implementing new trading algorithms to increase system performance▪ Enhanced system efficiency and reliability through algorithms/memory usage optimizations▪ Made integration/unit test coverageDeveloped the fiat-crypto payment system that assimilates integrations between crypto coins and fiat and allows the exchange of them.▪ Implemented the entire system from scratch▪ Designed an overall service architecture with the micro-services architecture providing a scalable and resilient solution▪ Built fully automated custom CI/CD pipelines on GitLab for containerized applications using Docker, Helm, and Kubernetes▪ Implemented reactive gRPC for seamless internal communication between microservices▪ Created authentication service flow for all internal microservices using Kratos and Spring Security▪ Managed a group of 2 developers

Building and structuring robust HTTP servers with comprehensive unit testing.Implementing advanced features like serialization/deserialization, data compression, and efficient logging.Enhancing services with JSON data exchange, database integration, and precise error management.Exploring critical security concepts such as hashing and encryption.Delving into concurrency and multithreading, reinforcing skills in asynchronous data processing and authorization mechanisms.

Worked on the backend part of the high-loaded banking application (VTB) for deposit and withdrawal of money:Implemented authorization pipeline for new microservices

Developed the backend part of the mobile banking application "Sovcombank Halva" with over 4 million customersDeveloped new microservices and developed new/refactoring an old functionalityIncreased overall speed of the backend and frontend team development by 40% by implementing fully customized mock backend responsesImproved CI/CD TeamCity pipelines using bash scriptsMade stress test scenarios for the load stress testing and tuning java applicationsPerformed environment performance support

Developed a backend module for integrating MS Exchange with an internal corporate portal, Developed backend modules for the portal, administration, and monitoring of the highly loaded project "Safe City",Developed the backend module of the purchasing portal for searching for goods on the websites of suppliersDeveloped custom plugins for the company's internal Jira, Jira Servicedesk systems. Created Jira and HP Service Manager integration plugin