My Projects

A collection of my work, side projects, and open source contributions.

Batyevka.NET - Internet Service Provider Platform

Batyevka.NET - Internet Service Provider Platform

A comprehensive web application for Batyevka.NET, a Ukrainian internet service provider, built using Next.js, React, and TypeScript. The platform serves both residential and business customers with features for service management, tariff calculation, and customer support.

Next.jsTypeScriptTailwindCSSPostgreSQLRedisnginxshadcn/ui
Camp Attendance Management System

Camp Attendance Management System

Developed a comprehensive digital check-in/check-out system for summer camps that replaced traditional paper-based attendance tracking. The system features real-time attendance monitoring, digital signature capture, and automated reporting capabilities.

PHPLaravelBootstrap 5JavaScriptCSS
TeamSync

TeamSync

TeamSync is a modern, feature-rich collaboration platform built with Next.js 13, combining real-time communication with AI-powered features. This enterprise-grade application enables teams to communicate effectively through text, voice, and video while leveraging artificial intelligence to enhance productivity.

Next.jsTypeScriptClerksocket.ioLiveKitTailwindCSSshadcn/uiOpenAI API PlatformAnthropicReplicate
AI SaaS Platform

AI SaaS Platform

A sophisticated Software-as-a-Service platform that integrates multiple AI capabilities into a unified web application built with Next.js 14, TypeScript, and Tailwind CSS. The platform leverages cutting-edge AI models from various providers to offer a comprehensive suite of AI-powered tools.

Next.jsTypeScriptClerkTailwindCSSshadcn/uiOpenAI API PlatformAnthropicReplicate

Welcome to my projects portfolio, where I showcase a diverse collection of web applications, SaaS products, and open-source contributions that demonstrate my capabilities as a Full Stack Developer. Each project represents a unique challenge solved through careful planning, modern architecture, and clean code implementation. From small utility tools to complex enterprise systems, this portfolio reflects my commitment to building high-quality software that delivers real value to users and businesses alike.

My projects span multiple industries and technologies, demonstrating versatility and deep technical expertise. Whether it's an e-commerce platform with advanced inventory management, a real-time collaboration tool with WebSocket integration, or a data visualization dashboard processing thousands of records, each project showcases different aspects of modern web development. I believe in building solutions that are not just functional, but also maintainable, scalable, and optimized for performance.

Technology Stack & Development Approach

The majority of my projects are built with React and Next.js, leveraging the latest features like Server Components, Server Actions, and the App Router for optimal performance and SEO. I'm a strong advocate for TypeScript across all projects, as it dramatically improves code quality and developer experience. For styling, I typically use Tailwind CSS for rapid development with utility classes, complemented by custom CSS when unique designs require more flexibility. State management varies by project needs – from simple React Context for basic state to Zustand or Redux for complex application state.

On the backend, my projects utilize Node.js with Express or Next.js API Routes, depending on the architecture. Database choices are made based on data structure and scalability requirements: PostgreSQL or MySQL for relational data with complex queries, MongoDB for flexible schema designs, and Redis for caching and session management. Many projects implement RESTful APIs following industry best practices, with some utilizing GraphQL for more complex data fetching scenarios. Authentication is typically handled with JWT tokens, OAuth providers, or modern solutions like NextAuth.js.

Featured Project Categories

My SaaS applications demonstrate end-to-end product development skills, from initial MVP to production-ready platforms serving real users. These projects typically include subscription management with Stripe integration, user authentication and authorization, team collaboration features, and admin dashboards for analytics and user management. I focus on creating intuitive user interfaces that make complex functionality accessible, backed by robust backend systems that handle data securely and efficiently.

E-commerce projects showcase my ability to build complete shopping experiences, including product catalogs with advanced filtering and search, shopping cart functionality with persistent state, secure checkout flows integrated with payment processors like Stripe and PayPal, order management systems, and customer account areas. Performance optimization is critical in e-commerce – I implement lazy loading for product images, optimize database queries for catalog browsing, and use caching strategies to ensure fast page loads even with large product inventories.

My data visualization projects demonstrate proficiency in transforming complex datasets into meaningful insights through interactive charts and dashboards. Using libraries like D3.js, Chart.js, or Recharts, I create responsive visualizations that update in real-time, handle large datasets efficiently with virtualization techniques, and provide intuitive filtering and drill-down capabilities. These projects often involve processing data on the backend, implementing efficient database queries, and optimizing data transfer with pagination and caching.

Development Best Practices & Code Quality

Every project in my portfolio adheres to industry best practices and coding standards. I implement comprehensive testing with Jest and React Testing Library, aiming for high test coverage on critical business logic and user interactions. Code is organized following clean architecture principles with clear separation of concerns – UI components, business logic, and data access layers are distinct and testable in isolation. I use ESLint and Prettier for consistent code formatting and to catch potential issues early in development.

Performance optimization is a priority in all my projects. I implement code splitting to reduce initial bundle sizes, lazy loading for images and components that aren't immediately visible, and aggressive caching strategies both on the client and server. Database queries are optimized with proper indexing, and I use tools like React DevTools Profiler and Lighthouse to identify and address performance bottlenecks. The result is applications that load quickly, respond instantly to user interactions, and provide smooth experiences even on slower network connections.

Open Source Contributions & Learning Projects

Beyond commercial projects, I actively contribute to open-source software and build learning projects to explore new technologies. My open-source contributions include bug fixes and feature additions to popular libraries, documentation improvements to help other developers, and creation of useful utilities and tools shared with the community. These contributions not only give back to the ecosystem that supports my work but also keep me engaged with diverse codebases and development approaches.

Side projects serve as my experimental playground for testing emerging technologies before incorporating them into client work. Recent experiments include AI integration using OpenAI APIs for intelligent features like content generation and chatbots, WebAssembly for performance-critical computations, Progressive Web App features for offline functionality and native-like experiences, and serverless architectures using AWS Lambda and Vercel Functions. These explorations ensure I stay at the cutting edge of web development while maintaining stability in production applications.

API Integrations & Third-Party Services

Modern applications rarely exist in isolation, and my projects demonstrate extensive experience with API integrations and third-party services. Payment processing integrations include Stripe for subscription management and one-time payments, PayPal for alternative payment options, and custom invoice generation systems. Authentication providers like Google OAuth, GitHub OAuth, and Auth0 are seamlessly integrated to provide users with convenient sign-in options while maintaining security.

I've integrated numerous cloud services including AWS S3 for file storage with proper access controls, SendGrid and Resend for transactional email delivery, Twilio for SMS notifications, and various analytics platforms like Google Analytics and Mixpanel. Each integration is implemented with proper error handling, retry logic for transient failures, and monitoring to ensure reliability. API keys and secrets are managed securely using environment variables and secret management services, never hardcoded or exposed in client-side code.

Mobile-Responsive & Accessible Design

All projects in my portfolio are built with mobile-first responsive design principles. I use Tailwind CSS breakpoints and CSS Grid/Flexbox to create layouts that adapt seamlessly from mobile phones to large desktop screens. Interactive elements are designed with touch targets that meet accessibility guidelines, and navigation patterns are optimized for both tap and click interactions. Performance on mobile devices is carefully considered, with special attention to bundle sizes and image optimization for slower connections.

Web accessibility is a fundamental consideration in all my projects, not an afterthought. I follow WCAG 2.1 guidelines to ensure applications are usable by people with disabilities. This includes proper semantic HTML structure, ARIA labels where necessary, keyboard navigation support for all interactive elements, sufficient color contrast ratios, and screen reader compatibility. Accessibility audits with tools like axe DevTools and Lighthouse are part of my development workflow, ensuring every user can access and use the applications I build.

Project Documentation & Knowledge Sharing

I believe in thorough documentation for all projects. Each repository includes a comprehensive README with project overview, setup instructions, environment variable configuration, and development workflow. More complex projects include additional documentation covering architecture decisions, API endpoints, database schema, and deployment procedures. Code comments explain complex algorithms and business logic, making it easier for other developers (or future me) to understand and maintain the codebase.

Many projects featured here are also discussed in detail on my technical blog, where I share insights about architecture decisions, challenges faced during development, and lessons learned. These blog posts provide deeper context beyond what's visible in the code, including performance optimization techniques applied, security considerations addressed, and trade-offs made between different implementation approaches. This knowledge sharing helps other developers facing similar challenges and demonstrates my thought process and problem-solving approach.

Browse through my projects to see examples of my work across different domains and technologies. Each project card includes links to live demos where you can interact with the application, GitHub repositories for those interested in the code, and detailed descriptions of the technologies and approaches used. If you're working on a similar project or need expertise in any of these areas, let's connect to discuss how I can help bring your vision to life with clean, efficient, and scalable code.