Available to hire
Senior Frontend Engineer with 9 years in web development (since 2017), focused on React, TypeScript, and Next.js. Experienced in production-grade product frontends: migrating JS to strict TypeScript, building reusable component libraries, adopting React Query for consistent server-state management, and establishing E2E testing with Playwright.
Typically owns frontend delivery end-to-end—from planning to release—working across Node.js, PostgreSQL, and Prisma, and collaborating with remote, cross-functional teams. Works on customer-facing analytics and data visualization tools, improving maintainability and performance without full rewrites.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Language
English
Advanced
Ukrainian
Fluent
Work Experience
Senior Frontend Engineer at Aiv o
June 1, 2024 - PresentModernized a live production audit platform without full rewrite: migrated from JavaScript to strict TypeScript, helped upgrade React 17 to 18, and continued delivering new features through the transition. Introduced React Query as the standard server-state solution, replacing manual Axios fetching with reusable query hooks for centralized caching, loading/error handling, and retry logic. Unified three legacy UI stacks into a single MUI v7 design system by consolidating shared components, design tokens, and styling while removing Ant Design usage across the codebase. Migrated drag-and-drop from react-beautiful-dnd to @dnd-kit to restore React 18 compatibility, improve accessibility, and reduce bundle size. Built the frontend testing foundation from scratch using Playwright, Storybook, and unit testing to protect critical user flows and reduce regressions via CI.
Senior Frontend Engineer at Mova d ex
May 1, 2022 - June 1, 2026Built customer-facing analytics platform using Metabase data, including multi-step onboarding, third-party account integrations, dynamic dashboards, configurable tables, saved views, and work-paper annotations. Shipped React and Next.js applications for international clients across analytics, real estate, job search, healthcare, e-commerce, and social impact, owning frontend delivery from planning to release. Built a B2B platform from scratch with onboarding, client/admin areas, organization & position management, file uploads, and PDF report generation. Delivered a Next.js search platform for the German market using SSR/SSG with Lighthouse over 90 and LCP under 1 second while maintaining real content loading. Shipped an e-commerce build on Next.js, Payload CMS, and Stripe, connecting CMS-driven content to store front and payment flows. Set up a shared component library and code-review practices adopted by the team to improve consistency and reduce repeated UI work.
Frontend Engineer (Mid-level) at Rivo Agency
October 1, 2021 - April 1, 2022Worked on an internal CRM system: participated in feature planning, proposed solutions, and added frontend libraries where they improved speed or maintainability. Extended a Next.js beauty services platform with new features and refactored the codebase as the product grew. Built several Next.js landing pages with Lighthouse scores above 92 and strong Core Web Vitals. Contributed to Phase 2 of a US B2C application for ValueSoft, Inc., adding frontend improvements and maintaining existing features.
HTML/CSS Developer at PRO-IT
July 1, 2017 - October 1, 2020Built responsive HTML/CSS markup, email templates, reusable layout patterns, and shared CSS libraries for production websites. Worked on a large B2C video-hosting product focused on markup, responsive layout, animation, and web performance. Built responsive and reusable markup for a custom web video player across desktop, tablet, and mobile, optimizing structure and assets for faster loading and better cross-browser stability.
Frontend Developer at PRO-IT
July 1, 2017 - September 1, 2021Moved from HTML/CSS work into React and Next.js, building reusable UI components and production-ready customer-facing pages. Built a Next.js website for a B2B video-plaguer product to help customers understand the product and set up integration options. Developed an integration page where users could pick video-player settings and generate an embed script for their own websites.
Education
M.Sc. in Hydropower Engineering at National University of Water Management and Natural Resources
January 1, 2011 - January 1, 2017Qualifications
Node.js - MVC, REST APIs, GraphQL
January 11, 2030 - July 29, 2026React Testing Library with Vitest
January 11, 2030 - July 29, 2026Industry Experience
Software & Internet, Media & Entertainment, Financial Services, Healthcare, Real Estate & Construction, Retail, Education, Professional Services
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Hire a Front-End Developer
We have the best front-end developer experts on Twine. Hire a front-end developer in Rivne today.