● Developed and maintained a B2B travel services booking system for agencies and partners. ● Participated in expanding system functionality for new sales markets and B2B partners. ● Improved integrations with ERP/1C and internal services. ● Reworked part of the API communication from a polling-based model to a push-based model to reduce the number of requests to the 1C server. ● Extended the mechanism for refunds and transferring funds between orders. ● Optimized Elasticsearch: improved search logic and participated in splitting a shared index containing 15+ million documents into separate sections. ● Investigated production issues using Sentry data and bug reports: analyzed problems in ERP integrations and autocomplete, reproduced bugs, and implemented fixes. ● Participated in the gradual decomposition of a monolithic legacy application into internal and external packages.

● Participated in maintaining and developing internal accounting systems and external platforms. ● Developed new features for an employee absence tracking system. ● Maintained and improved the “Total Dictation” project. ● Configured Zabbix and monitoring integrations with web applications. ● Communicated with clients to clarify requirements, approve changes, and verify results. ● Improved business logic and maintained legacy projects.

● Developed and maintained web applications for major Moscow IT projects, including KOS portals, Mayor’s Grants, Immortal Regiment, Public Chamber, and others. ● Integrated Symfony and WordPress projects with external APIs, including Zabbix and Dadata. ● Developed a Symfony bundle for sitemap generation with flexible configuration. ● Created an intermediate layer between Sphinx and the application to support advanced search functionality. ● Developed and refactored business logic based on client requirements. ● Maintained and improved legacy projects. ● Extended WordPress functionality without using third-party plugins.