Особисті дані приховані

Vitaliy Vinichenko
Fullstack Engineer
[відкрити контакти](див. вище в блоці «контактна інформація») | Dnipro, Ukraine | vitvin-visit-card.vercel.app/

[відкрити контакти](див. вище в блоці «контактна інформація»)

SUMMARY
Fullstack Engineer with 4+ years of experience building production web, desktop, and mobile applications.
Experienced in developing products end-to-end, from frontend architecture and UI implementation to
backend APIs, databases, authentication, business logic, and deployment. Strong background in React,
TypeScript, Node.js, Fastify, Supabase, and PostgreSQL. Built and launched independent commercial
products, including a desktop CRM with its own backend, licensing, subscription validation, and application
distribution infrastructure. Experienced with AI/LLM integrations, cross-platform applications, interactive 3D
interfaces, and performance optimization.

WORK EXPERIENCE
Frontend Developer, OnePlatform 02/2026 – 09/2026 | Remote
Owned end-to-end delivery of frontend features for a multi-module enterprise B2B 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 team to consistently meet
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strict sprint deadlines.
Translated Figma designs into pixel-perfect, responsive interfaces, implementing custom iconography and
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complex UI elements.
Leveraged and contributed to a unified Design System, ensuring visual consistency and reusability across
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multiple platform modules.
Built scalable React and TypeScript interfaces using reusable component architecture.
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Integrated REST APIs, implementing robust data flow, authentication, and error handling mechanisms.
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Improved frontend performance through lazy loading, render optimization, and bundle size reduction.
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https://oneplatform.club/en

Frontend Engineer / Fullstack Developer, Freelance 11/2022 – 02/2026 | Remote
Developed and delivered commercial applications and independent product initiatives across web, desktop,
and mobile platforms. Responsible for the full development lifecycle, including architecture, feature
implementation, backend integration, and deployment.
Built and maintained production applications using React, TypeScript, Electron, and React Native.
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Developed cross-platform desktop and mobile solutions with a focus on performance, usability, and
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maintainability.
Developed backend functionality and integrated frontend applications with backend services, implementing
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authentication, APIs, state management, and complex data flows.
Worked with Node.js, Fastify, Nest.js, Supabase, and PostgreSQL to build backend services and supporting
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infrastructure.
Created interactive web experiences and 3D interfaces using Three.js and React Three Fiber.
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Developed a CRM platform for an agricultural company, enabling client management, communication
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tracking, and structured data workflows.

React Native Developer, WizardsDev 10/2021 – 03/2022 | Dnipro, Ukraine
Assisted in developing mobile applications using React Native.
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Worked with state management, API integration, and application data flows.
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Followed Agile development practices and collaborated with the development team.
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EDUCATION
Bachelor of Computer Science, Ukrainian State University of Science and Technology 07/2020

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

TECHNICAL SKILLS
Languages: JavaScript, TypeScript
Frontend: React, Next.js, React Native, Frontend Architecture, Component Architecture, Design Systems, State
Management, Redux, MobX, Zustand, React Context, React Hook Form, Zod, Tailwind CSS, HTML, CSS, Shadcn,
Responsive Design, Accessibility
Backend: Node.js, Fastify, Nest.js, REST API, WebSockets, Authentication, JWT, API Integration, Axios, Fetch
Databases & ORM: PostgreSQL, Supabase, Prisma ORM, Sequelize ORM, Redis, Data Migration, Local Storage
Queues & Automation: BullMQ, n8n, Telegram Bot API
Desktop & Interactive: Electron, Three.js, React Three Fiber, Drei, Framer Motion, Scroll-driven Animations
Infrastructure & Tools: Git, GitHub, Vite, Cloudflare, Webpack, Vercel, Postman, Insomnia, Figma, Jira
AI & LLM: LLM API Integration, Local/Cloud LLMs, Local LLM Deployment, Model Quantization, Hugging Face,
Embeddings, Vector Search, RAG, Tool Calling, Structured Outputs, Text-to-Speech (TTS), Context Memory
Management
AI Development Tools: Claude Code, OpenAI Codex, Cline, Antigravity

OWN PROJECTS
KIT: Keep In Touch — Desktop CRM | Personal Product, Commercial desktop CRM application for sales
managers and client-facing professionals to manage customer relationships, follow-up workflows, and daily
operations.
Designed and built the complete product ecosystem from scratch, including the Electron/React client, public
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website, backend infrastructure, licensing system, activation keys, trial licenses, subscription validation, and
email delivery.
Built the desktop application using Electron, React, and TypeScript, with customizable client fields,
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communication history, notes, follow-up scheduling, calendar management, smart search, and automatic
daily backups with data recovery.
Designed and implemented the backend using Fastify and Supabase/PostgreSQL, covering license
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validation, activation keys, trial access, subscriptions, email delivery, and supporting product APIs.
Implemented local data storage to keep customer information on the user's device, with internet access
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required only for license verification at application startup.
Set up automated application version distribution and update infrastructure, allowing new releases to be
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delivered through the product website.
Deployed the complete product ecosystem and launched the application for public pre-release testing
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ahead of the commercial release.
https://kit-keepintouch.pages.dev/

Pocket Storage,
Cross-platform mobile application for storage organization, navigation, and personal belongings management.
Built and published on Google Play 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.
https://play.google.com/store/apps/details?id=com.pocketstorage

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 capabilities such as 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.

Interactive 3D Portfolio,
Interactive 3D portfolio website combining WebGL, scroll-driven animations, and advanced UI motion effects.
Built the 3D environment using Three.js, React Three Fiber, and Drei, integrating 3D objects and scenes into
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a fully interactive React application.
Implemented complex scroll-driven animations for both 3D objects and the camera, synchronizing scene
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transformations with the user's scroll position.
Developed advanced UI animations with Framer Motion, creating coordinated transitions between 3D
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content and traditional interface elements.
Implemented complex CSS masking and clipping effects to create layered transitions and immersive visual
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sections.
Built a custom interaction system connecting scroll progress, 3D scene state, UI animations, and visual
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effects into a unified experience.
Focused on component architecture and rendering performance to maintain smooth interactions
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throughout the 3D experience.
https://vitvin-3d-portfolio.vercel.app/

LANGUAGES
English German
B2 — Upper-Intermediate B1 — Intermediate