Platform providing next-gen inclusive family-building beneits to help employers attract and retain talent while reducing their overall fertility & maternity cost by improving clinical outcomes. Key contributions: ● Designed and implemented API. ● Expanded admin panel functionality (active_admin). ● Upgraded Ruby on Rails (6.1->7.1) & Ruby (2.7->3.2). ● Introduced a low to track deprecations (which helps in safe version upgrading). ● Maintained secure application environment by promptly updating dependencies, assisting in vulnerability analysis and prioritization, coniguring middleware, etc. ● Improved overall technical environment (code quality by adding linters + proposed the adoption of AI tools for code review, CI speed by parallel_tests, introduced gh releases for our internal gem, etc). ● Organized a few quizzes for the team.

Experience with a high-load system combining a massive monolith and microservices, supporting high throughput (RPM) and operating on large datasets. ● Skilled in working with PostgreSQL partitions, data aggregations, replications, locking mechanisms, and other performance optimization techniques for heavyloaded databases. ● Proiled and optimized codebase using database tools and application monitoring systems. ● Implemented new logic, improved system stability, worked with custom DSL, code refactoring, etc.

● Backend development: adding new features to a custom platform to provide teachers and learners with interactive tools and resources for studying. Active participation in worklow improvements. ● Data exchange with other services in product infrastructure. ● Performance optimization.

● Backend and frontend development, server coniguration, deployments, requirements analysis and clariication. ● Worked on projects in different domains with different stacks. ● Worked on integrations with different services to fetch and process data. Content library for tourism, cruise and travel. ● Integrations with different services to fetch and process data. ● Adding new backend/frontend functionality to the system. ● Refactoring and optimizing of main parser functionality. Assessments gathering platform. ● Full Stack development (RoR + React). Companies data monitoring system. ● Analytics and monitoring platform development. ● Database requests proiling and optimization (> 3 billion business records). ● Using master-slave architecture, horizontal sharding and other approaches to deal with big amount of data. CMS (web page builder). ● Working on site optimization based on Google Page Speed Insights / Lighthouse recommendations. ● Working with Google and Yandex Analytics platforms. ● Adding new features to the content management system.

● Full development cycle for internal system (small belarusian company) that allows to track some business processes details.