Yevhen

YEVHEN BOZADZHI – Fullstack Developer (Next.js
/ Node.js / TypeScript)
Professional Summary
Fullstack Developer with commercial experience building scalable web applications using Next.js,
React, TypeScript, Node.js, PostgreSQL and MongoDB. Experienced in REST API development,
authentication and authorization systems, WebSockets, real-time applications, AI integrations
(RAG, LLMs), payment systems, performance optimization, SSR applications and modern frontend
architecture. Background in performance marketing with responsibility for advertising budgets up to
$120,000/month.

Technical Skills
Frontend: React, Next.js (App Router, SSR), TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS,
Zustand, TanStack Query, Formik.
Backend: Node.js, Express.js, REST API, WebSockets (Socket.IO), JWT Authentication,
Role-Based Access Control, Middleware Architecture, Validation (Zod/Joi).
Databases: PostgreSQL, MongoDB, Prisma ORM, SQL Design, Query Optimization.
AI & Infrastructure: RAG, LLM Integrations, Vector Search, Qdrant, Vercel AI SDK, Docker, CI/CD,
Git, GitHub.
Architecture: Fullstack Applications, Real-Time Systems, SaaS Platforms, Payment Processing,
Secure Authentication, API Design, Error Handling, Logging.

Work Experience

Fullstack Developer (October 2024 – June 2026)
• Developed fullstack applications using Next.js and Node.js.
• Built secure REST APIs with validation, filtering and pagination.
• Implemented AI-driven features and payment integrations.
• Developed real-time functionality using WebSockets.

Marketing Manager & Ads Expert (December 2020 – October 2024)
• Managed advertising budgets from $10,000 to $120,000 per month.
• Achieved significant revenue growth through testing and optimization.
• Worked closely with design, content and technical teams.

Projects Portfolio

Enterprise SaaS Platform
Designed and developed a multi-role SaaS platform focused on business process automation and
AI-assisted workflows. Implemented secure JWT authentication, role-based permissions, protected
routes, payment processing with Stripe, server-side rendering with Next.js, PostgreSQL database
architecture through Prisma ORM, and scalable REST APIs. Integrated AI-powered damage
assessment, document processing and contextual data analysis. Built reusable UI components,
dashboard analytics and automated business workflows. Stack: Next.js, React, TypeScript,
Node.js, PostgreSQL, Prisma, JWT, Stripe, Tailwind CSS, Docker, Vercel AI SDK.

AI RAG Chat Platform
Built a context-aware AI chat application using Retrieval-Augmented Generation architecture.
Implemented vector search, document indexing, token tracking, conversation history management
and contextual responses. Designed scalable backend APIs, optimized prompt pipelines and
integrated AI services. Stack: Next.js, TypeScript, Node.js, Qdrant, PostgreSQL, Vercel AI SDK,
RAG, LLM Integrations.
Meow Cinema – Real-Time Movie Watch Platform
Developed a fullstack movie platform with synchronized watch rooms for multiple users.
Implemented room creation, invitation flows, real-time synchronization of video playback, JWT
authentication, protected routes, live participant updates and WebSocket communication. Designed
PostgreSQL data models, scalable API architecture and modern responsive UI. Stack: Next.js, React,
TypeScript, Node.js, PostgreSQL, Prisma, WebSockets, JWT, Tailwind CSS.
Test & Quiz Builder Platform
Created a platform for building, managing and completing tests and quizzes. Implemented dynamic
question generation, scoring systems, result tracking, authentication, user dashboards and
validation workflows. Developed reusable API architecture and database models. Stack: Next.js,
TypeScript, Node.js, PostgreSQL, Prisma, JWT, REST API, Zod Validation.

Comments Application
Developed a comment management system with nested discussions, authentication and
moderation functionality. Implemented CRUD operations, secure API endpoints, validation layers
and database relations. Focused on clean architecture, maintainability and scalable backend
design. Stack: React, Next.js, TypeScript, Node.js, PostgreSQL, Prisma, REST API.

Education
Fullstack Developer Program (872 hours) – GoIT (2025)
Bachelor's Degree in Economics – IAPM (2019-2023)