Олександр

Oleksandr Mushynskyi Intern/Junior Developer
[відкрити контакти](див. вище в блоці «контактна інформація») [відкрити контакти](див. вище в блоці «контактна інформація»)

Poland/Warsaw GitHub

Profile
Enthusiastic Computer Science undergraduate with effort to develop in IT area. Cooperative, hard-working and
flexible, creative, with good time management, able to think critically and solve problems, responsible and willing
to work in a team, quick-learner and open to critics.

Technical Skills

Languages: — Java 17+, JavaScript, Python, C++, T-SQL | Frontend: React, Vite, React Router, Axios,
HTML/CSS | Backend: Spring Boot, Spring MVC, Spring Security, Node.js, Express, Hibernate, REST APIs, JWT
authentication | Databases: PostgreSQL, MySQL, Oracle, SQLite | Tools & Other: Git & version control,
Docker, Zod, bcrypt, Pino

Education
10/2023 – Present Bachelor degree
Poland, Warsaw Polsko-Japonska Akademia Technik Komputerowych / Information technology

Projects
02/2026 – Present City Care Hospital
Full-Stack Hospital Appointment Booking Platform
Technologies: React 19 · Vite · React Router · Axios · Node.js · Express 5 · SQLite
(better-sqlite3) · JWT · Zod · bcrypt · Pino
Key Features:
• Built a full-stack patient/doctor/admin platform for browsing doctors, checking
availability, and booking, rescheduling and cancelling appointments.
• Implemented JWT-based authentication with httpOnly refresh-token rotation (hashed
tokens, jti claims) for secure, persistent sessions.
• Designed role-based access control (patient, doctor, admin) enforced via middleware
across all protected routes.
• Structured the backend with a layered architecture (routes → services → repositories
→ DTOs) using Zod for request validation and Pino for structured logging.
• Developed an admin dashboard with live statistics, recent-activity feed and generic
data-table views.
• Implemented a soft-delete system with cascading appointment cancellation to
preserve data integrity.
• Built a custom, locale-aware date picker component from scratch for appointment
scheduling.
• Added i18n support with full Polish and English localization across the UI.

Languages

Polish English Ukrainian