- Participated in a project to develop an application for coaches. It’s a B2B application which helps them in their daily routine. Developed project from scratch to production. Participated in the design and development of the server side of the messenger. Built a front-end application based on React TS and integrated it with a NodeJS websocket server and PHP REST server. Developed UI kit for a front-end application. - Design and development of a warehouse management system based on the distributed microservices. Participated in the design and development of both front and back parts of application. Backend includes few services which works through API gateway with JWT authentication. Developed authorization and visualization part of frontend SPA. Used swagger to visualize and interact with API.Tools summary: TypeScript, React TS, Redux, RTK, SASS, Material UI, Tailwind CSS, Java Spring (Data, Security, Web, Cloud, Eureka), PostgreSQL, MongoDB, Tomcat, Kafka, Docker, Jest, JUnit, Swagger.

- Support of a channel and equipment accounting and monitoring system. This application improved reliable of our channels and reduced failure duration. The following modules were in my area of responsibility: authorization part based on using a JWT token, encrypting the password using a hash function. Parsing of equipment configuration into database. Displaying of information and statistics with the export of custom reports in the CSV format. - Development and support of an equipment monitoring and management system based on SNMP protocol. Developed a frontend part of the application. Developed authorization part of backend. Built responsible interface and connected it with rest backend part. Visualized statistics in the form of graphs. Implemented a dashboard for managing equipment.

Charged with maintenance, configuration, installing, managing and monitoring network equipment (Cisco, Nokia, RAD, etc.). Configuration, monitoring and installing of PBX equipment (AVAYA, Elastix and NEAX). Worked with other departments and counterparties on the organization of new channels. Designed and implemented reliable network systems. Developed billing data processing application (Qt and C++).