In January 2025, Yehor Kovalenko developed the foundational frontend architecture for the EmergencyProjekt_frontend repository, delivering a modular volunteer management UI with routes, views, and API integration using Vue.js and JavaScript. He implemented internationalization, enabling Polish and English language support across volunteer-related interfaces. On the backend, Yehor configured CORS in the EmergencyProject repository with Java, ensuring seamless frontend-backend communication during development. He also addressed a bug to accurately reflect volunteer attendance in availability status. His work demonstrated depth in API integration, modular code organization, and cross-stack development, resulting in faster onboarding, improved admin workflows, and accessible multilingual user experiences.