a
alexxmushikk

Oleksandr

@alexxmushikk

React frontend developer

Pologne
Anglais, Ukrainien, Polonais, Russe
Certaines informations sont présentées en anglais.
À propos de moi
I'm Oleksandr, a React developer from Warsaw finishing a Computer Science degree. I build and fix React interfaces, connect them to REST APIs and cover them with tests. My main project is a full-stack booking platform with patient, doctor and admin roles, JWT auth and 178 automated tests. I communicate in English, Polish and Ukrainian, ask clarifying questions before I start, and deliver clean, readable code.... Plus d’infos

Compétences

a
alexxmushikk
Oleksandr
hors ligne • 

Voir mes services

Personnalisation
I will build or fix react components, forms and UI bugs
De30 $US / projetPlus de détails

Portfolio

Expérience professionnelle

Personal_portfolio project

Personal portfolio project

5 mos

Frontend Developer (personal project)

Aug 2026 - Aug 2026 • 0 mos

Personal React project: a single-page app that decodes vehicle VINs through the public NHTSA vPIC API. What I built: • VIN input with validation and a search history stored in localStorage • Real VIN diagnostics taken from the API's error fields instead of its always-OK status • Sanitised API-provided HTML with DOMPurify to prevent unsafe rendering • Cached shared API data across routes to avoid repeated requests Stack: React 19, Vite, React Router, DOMPurify, CSS.

Full-Stack Developer (personal project)

Feb 2026 - Jul 2026 • 5 mos

Personal full-stack project: a hospital appointment booking platform with separate patient, doctor and admin roles. Live demo: hospital-pet.vercel.app. Code: github.com/AlexxMushikk/hospital-pet What I built: • Patient, doctor and admin interfaces in React 19 with booking and rescheduling flows • A custom locale-aware date picker from scratch, without a UI library • An admin dashboard with live stats, an activity feed and reusable data tables • A layered Express backend (routes, services, repositories, DTOs) with Zod validation • JWT authentication with httpOnly refresh-token rotation and role-based access • 178 automated tests (Vitest, React Testing Library) for API routes, services and UI Stack: React 19, Vite, React Router, Axios, Node.js, Express, SQLite, JWT, Zod.