nerbyk

- Contributed to the development and support of a Governance, Risk, and Compliance (GRC) product. - Engineered web applications, monitored error alerts, and facilitated product ownership transition during company acquisition. - Developed new backend microservices, migrating from Ruby on Rails to a modern stack including AWS Lambda, Serverless, TypeScript,. - Executed End of Life (EOL) upgrade of the Rails monolith (>1kk LOC), resolving dependencies, deprecations, and test issues. - Refactored over 15 database resources with implicit dependencies for the Year API Restructure Initiative. - Delivered new UI and API functionality across GRC Audit submodules, ensuring backward compatibility for multiple API versions. - Addressed production bugs, reducing SQL query latency from 40-50s to <1s and resolving critical memory overflow issues. - Conducted weekly monitoring and bi-daily production deployments using DataDog, CloudWatch, and AirBrake. - Led the CKEditor migration, updating and integrating a new custom Ruby gem with npm package. - Overhauled Rails HTML ERB module, migrating to a new React micro-frontend, enhancing UI/UX. - Implemented a lightweight DSL for optimizing lazy loading of ENV variables for Doctor rake tasks. - Improved Ruby codebase through continuous refactoring of gems and Rails monolith sections.

- Contributed to a 6-member development team at a B2B startup specializing in e-commerce price optimization. - Developed new business logic and managed the full development cycle across server and client sides, improving delivery efficiency by 60%. - Integrated partner APIs within a Ruby microservice, implementing a caching system and organizing parallel API fetching to achieve up to 200 RPS(api limit). - Optimized resource utilization (servers, databases, queues) and resolved urgent production bugs. - Refactored key server-side modules, improving code extensibility and readability. - Migrated 40% of the client application UI from Vue.js 2 to Hotwire, completing the transition by July 2021 despite Hotwire's pre-release status.

During my initial period in the Czech Republic, I actively engaged with the local Russian-speaking diaspora, contributing to the development of various projects and support services.