Staff Frontend Engineer / Full Stack Developer

I am building a multi-tenant car trading management SaaS for auto dealers from scratch. The product covers inventory, parts catalogues, sales, repairs, finance, messaging, storage management, and user notifications through Telegram, email, and push.

I designed tenant isolation using individual PostgreSQL databases resolved by subdomain. I implemented role-based access for administrators, managers, and mechanics, as well as a public multilingual storefront in English, Ukrainian, and Polish.

The platform uses Next.js, TypeScript, tRPC, Auth.js, Prisma, shadcn/ui, Tailwind CSS, TanStack Query and Table, Docker, and Hetzner VPS.

I drove frontend technical strategy across AI-powered event-management products for trade shows, exhibitions, and conferences. I designed scalable solutions for multi-tenant applications and domain-based server configuration.

I led architectural decisions around Next.js 14, including the App Router and React Server Components, and migrated end-to-end testing from Cypress to Playwright. I collaborated with backend, mobile, and product teams on system-wide decisions and acted as a technical mentor across teams.

I led the frontend team across multiple products, ensuring delivery quality and architectural consistency. I designed React and Next.js architecture, including SSR and CSR strategies, internationalization, custom authentication providers, and token-based authentication for multi-domain environments.

I built an interactive 3D virtual exhibition booth using Three.js. I owned performance optimization, memory-leak debugging, and application stability while mentoring developers and defining frontend best practices.

I migrated the admin panel to React.js. I introduced React hooks, a modular application architecture, and shared UI layers to improve maintainability and development consistency.

I developed and maintained a Vue.js admin panel with complex forms, role-based access control, and reusable UI components. I built Online Rooms from scratch with real-time video, audio, and chat using Vue 2, WebSockets, and Amazon Chime SDK.

The Online Rooms product was shipped during COVID and helped retain clients. I also used Mapbox for geospatial exhibitor mapping and later replaced it with a custom Three.js-based floorplan renderer.

I built web applications for clients and internal business operations using Vue.js, Nuxt.js, jQuery, Laravel, PHP, and Delphi. I was self-taught in PHP, jQuery, and Delphi after starting programming with Basic and Pascal.

I managed a network of four computer clubs with more than 100 staff across café, parking, leasing, and software operations. The Vialan web platform has been online since 2005.

I handled accounting, financial reporting, and high-level operational management for the enterprise.

I supported employment of former miners, prepared bilingual documentation, and represented the project to local enterprises.

Completed software development studies with honors.