Yozhef Handraburh
Developed a corporate certification platform that enables companies to assess employee skills and issue digital certificates.
About
Developed a corporate certification platform that enables companies to assess employee skills and issue digital certificates. Built the frontend using React and TypeScript, creating intuitive user interfaces for certificate management, skill assessment workflows, and admin dashboards. Implemented performance optimizations including code splitting, lazy loading, and efficient state management. Integrated REST APIs for seamless communication between frontend and backend services. Developed secure backend infrastructure using Java Spring Framework, Spring Security, and Keycloak for robust authentication and authorization. Designed MySQL database schemas with entity relationships and managed migrations using Flyway.
- 1 year's experience
- Joined December 2025
Languages
- EnglishAdvanced
- UkrainianFluent
- RussianAdvanced
- Spanish; CastilianBeginner
Industry experience
- Software & Internet
- Professional Services
Work experience
Full Stack Developer responsible for frontend development with React, TypeScript, and JavaScript to build responsive, dynamic web applications; backend development using Java Spring Framework (Spring Boot, Spring Security) to create secure REST APIs and implement authentication/authorization with Keycloak; designed MySQL schemas, managed migrations with Flyway, and integrated payment systems; used Git for version control and Postman for API testing; built a corporate certificate platform frontend in React/TypeScript with UI for certificate management and skills assessment; implemented performance optimizations (code splitting, lazy loading, efficient state management) and integrated REST APIs for frontend-backend communication; contributed to landing pages development and Linux administration.
Education
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