Designed and built a complete appointment-booking web application for independent professionals (makeup artists, stylists, barbers, and similar services). Developed a modern full-stack architecture using: Frontend (React + TypeScript (Vite), TailwindCSS, shadcn/ui), Backend (Node.js + TypeScript, Express, REST API), Database (PostgreSQL with Prisma ORM). Implemented secure authentication (Local + Google OAuth 2.0) using Passport.js and JWT. Built advanced scheduling logic: working hours, service durations, dynamic availability calculation, minimum-notice rules, and conflict prevention. Developed an admin dashboard with service management, availability configuration, booking overview, and responsive UI. Integrated email notifications through Resend and configured domain/DNS via Cloudflare. Deployed and maintained the application on platforms such as Railway, Render, and Supabase/Neon, optimizing performance and costs. Delivered a production-ready MVP currently used for real-world business validation.

Actively collaborated with clients to understand and define specific project requirements. Designed and implemented custom software solutions tailored to client needs. Developed and integrated features for both the frontend and the backend. Participated in the full software development lifecycle, including testing and debugging code to ensure quality. Worked with databases for data persistence and management.

Maintained the web application's stability and operation, troubleshooting and resolving reported errors and incidents. Actively participated in the development cycle for new features, from requirements analysis to implementation. Implemented backend business logic to extend application capabilities and user value.

Provided private computer tutoring for elderly individuals during the pandemic, adapting content to each case.