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Vitaliy Vinichenko
Front-End Engineer
[open contact info](look above in the "contact info" section) | Dnipro, Ukraine | vitvin-visit-card.vercel.app/

[open contact info](look above in the "contact info" section) | github.com/VitVin

Summary
Frontend Engineer with 3+ years of full-cycle experience across web, desktop, and mobile applications.
Specializing in React, TypeScript, and interactive 3D interfaces. Proven track record of delivering scalable UI for
enterprise B2B platforms and commercial desktop apps. Experienced in integrating local/cloud AI models
(LLMs) and building complex cross-platform solutions. Strong focus on pixel-perfect implementation, design
systems, and performance optimization.

Work Experience
Frontend Engineer / Fullstack Developer, Freelance 11/2022 – Present
Developed and delivered commercial applications for clients and independent Remote
product initiatives across web, desktop, and mobile platforms. Responsible for the
full development lifecycle, including architecture, feature implementation, and
deployment.
Built and maintained production applications using React, TypeScript, Electron,
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and React Native.
Developed cross-platform desktop and mobile solutions with a focus on
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performance, usability, and maintainability.
Integrated frontend applications with backend services, implementing
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authentication, state management, and complex data flows.
Created interactive web experiences and 3D interfaces using Three.js and React
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Three Fiber.
Developed a CRM platform for an agricultural company, enabling client
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management, communication tracking, and structured data workflows.

Frontend Developer (Contract), OnePlatform 02/2026 – 05/2026
Owned end-to-end delivery of frontend features for a multi-module enterprise B2B Remote
platform used to automate business operations, employee development, and
internal workflows within a large cross-functional Agile team.
Accelerated feature delivery and optimized development workflows, enabling the
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team to consistently meet strict sprint deadlines.
Translated Figma designs into pixel-perfect, responsive interfaces, implementing
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custom iconography and complex UI elements.
Leveraged and contributed to a unified Design System, ensuring visual
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consistency and reusability across multiple platform modules.
Built scalable React and TypeScript interfaces using reusable component
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architecture.
Integrated REST APIs, implementing robust data flow, authentication, and error
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handling mechanisms.
Improved frontend performance through lazy loading, render optimization, and
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bundle size reduction.

React Native Developer (Trainee), WizardsDev 10/2021 – 03/2022
Assisted in developing mobile applications, learning best practices in React Native, Dnipro, Ukraine
state management, and API integration within an Agile team.
Education
Bachelor Computer Science, Ukrainian State University of Science and Technology 07/2020

Programmer-Technician, College of Business and Law 07/2018

Skills
Languages & Frameworks: JavaScript, TypeScript, React, Electron, React Native, Vue, Next.js, Node.js
Styling & UI: Tailwind CSS, HTML5, CSS3, Pixel-Perfect Layouts, Responsive Design, Accessibility
State Management: MobX, Redux, Zustand, React Context, Pinia
Forms & Validation: React Hook Form, Zod
Data & APIs: REST API, WebSockets, Axios, Fetch, Supabase, Node.js, JWT
Tools: Git, GitHub, Vite, Webpack, Figma, Postman, ESLint, Prettier
Interactive UI & 3D: Three.js, React Three Fiber, Drei, Framer Motion, Scroll-driven animations
AI Integration: LLM API integration, Tool Calling, Context Memory management

Projects
Client Manager, Desktop application for sales teams to manage customer relationships, follow-up workflows,
and daily operations.
Built from concept to production using Electron, React, and TypeScript.
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Developed backend services for licensing workflows, subscription validation, and secure client-server
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interactions.
Implemented local data storage with automatic backup creation and recovery workflows to prevent data
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loss.
Created a commercial distribution system with activation keys and automated email delivery for license
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management.

AI 3D Avatar Assistant, Interactive desktop AI assistant featuring a 3D animated avatar that acts as a smart
companion and productivity tool.
Integrated local and cloud LLMs, implementing advanced capabilities like tool calling and persistent context
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memory.
Built the 3D animated widget and interactive rendering system using Three.js and React Three Fiber.
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Packaged the application as a cross-platform desktop widget using Electron, ensuring low resource
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consumption and smooth performance.

Pocket Storage,
Cross-platform mobile application for storage organization, navigation, and personal belongings management.
Built and published on Google Play (currently in closed beta) using React Native and TypeScript.
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Implemented multilingual support, advanced search, customizable structure management, and data
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migration tools.

Languages
Ukrainian English German
Native B1 - Intermediate B1 - Intermediate

Certificates
English language German language
Streamline Language School Kreisvolkshochschule