Michael Yakimenko

Developed a single-page application using AI-assisted development with Codex. Migrated legacy React code to modern Next.js and Vue.js to Vue 3, and performed end-to-end testing.

Led architectural refactor of company website, including real-time tournament leaderboard pages and customer-facing authenticated areas. Improved stability, maintainability, and performance across Vue.js frontend and Flask/PostgreSQL backend features.

Developed frontend layer for a sports betting platform with embedded third-party widgets. Designed a CSS/SCSS override system for full visual customization and converted non-responsive widgets into a responsive UI system.

Reduced vulnerabilities on the main Toptal platform by over 40% through frontend package updates and conflict resolution. Refactored components from class-based to functional React and contributed to decomposing a monolithic React application into microfrontends.

Maintained and enhanced Upbook.com, a front desk workflow optimization platform, using Express.js, PostgreSQL, Sequelize, and Angular. Led migration from Angular/Express to Python and React-based stack, improving scalability and maintainability.

Led development of Allocation Report Creator, a web-based reporting tool with editable tables and real-time calculations. Built and maintained frontend features using Angular, TypeScript, HTML, SCSS, and GraphQL, and mentored support engineers.

Led migration of Boost project to React and TypeScript architecture, improving maintainability and scalability. Built stable application core within four months and supported production releases every two months.

Refactored jQuery code into vanilla JavaScript and extracted reusable functionality across comparison websites. Migrated Bestdeals.today from Ruby on Rails server-side rendering to a React single-page application.

Maintained and developed features for Lastdraft.io, a cloud-based document collaboration platform built with AngularJS. Implemented responsive page layouts and UI styling using HTML, CSS, SCSS, and JavaScript.

Fixed UI bugs and improved frontend functionality for an online IDE built for SAP Fiori/SAPUI5 framework. Wrote unit tests with QUnit and implemented page layouts using HTML, CSS, JavaScript, and jQuery.

Developed a disaster alert system using AngularJS and Sass. Built interactive UI elements including modals and selectable map layers, and developed multiple landing pages.

Degree in Hydropower plant engineering from Zaporizhia State Engineering Academy.