- Developed API integration with a financial broker using Spring Framework, leveraging RESTful architecture and JSON data exchange that helped launch MVP in a short time- Integrated the application with third-party systems through REST API, RSocket, and gRPC for data exchange and functional interaction- Decomposed a monolithic application into microservices to improve system resilience and scalability- Architected a microservices-based application to enhance modularity, maintainability, and scalability- Implemented inter-service communication using Eureka to ensure seamless and reliable interaction between microservices- Integrated ActiveMQ message queue for asynchronous communication with the banking system, enabling efficient and reliable data exchange- Designed and implemented CI/CD pipelines in Git using tools like Jenkins and GitLab CI, automating the build, test, and deployment processes to ensure faster and more reliable software delivery- Planned and deployed changes to the database schema using LiquiBase to ensure safe and automated data structure updates- Support and development of a website using the Vue.js framework- Wrote unit and integration tests using JUnit, TestContainers, Mockito, Spring Test, and REST Assured to ensure high-quality and reliable code- Implemented application monitoring using Prometheus and Grafana to track performance and detect problems- Configured and managed containerized applications using Docker and Kubernetes to ensure high availability and scalability- Conducted code reviews and cross-reviews to identify potential issues and improve code quality.- Decomposed and evaluated business tasks to understand requirements and efficiently plan development

- Planned, architected, and developed a web application using REST API technologies to integrate with an external delivery service.- Created functionality from order placement to delivery tracking, ensuring convenience and efficiency for customers.- Implemented and organized a code-review process for regular code checks to ensure compliance with standards, architecture, and security.- Analyzed database performance and identified bottlenecks.- Planned and deployed changes to the database schema using Flyway to ensure safe and automated data structure updates- Designed and optimized the database structure to ensure efficient query execution and enhance system performance- Optimized SQL queries, indexes, and data structures to improve performance and reduce response time.- Created and maintained detailed documentation for the application's API to ensure clarity and ease of use for developers.- Participated in meetings with project managers to discuss requirements and plan new functionality.- Implemented and integrated new features into the application according to business requests and customer needs.

- Implemented XML-based integration for bidirectional data exchange between the CRM system and external systems, resulting in a 40% reduction in operating costs- Developed and implemented server request protocols that increased the system's fault tolerance by 5% - Developed and implemented a desktop app for inventory of goods, which simplified the accounting of goods- Provided ongoing maintenance and technical support for the existing CRM system

- Documented the application API in Confluence, which accelerated the integration process with third-party systems- Designed, implemented, and maintained bidirectional data exchange between CRM and web service by using HTTP protocol, leading to a 20% reduction in operating costs- Automated the process of contacting the technical support service that reduced the reaction time by 30%