mbalenovic

- Led the development of cross-service complex components using Module Federation, enabling shared functionality and a consistent user experience across microfrontends. - Pioneered the migration from a legacy stack to React by rebuilding the Homepage and Header, implementing session management and safety mechanisms, and establishing reliable API communication while introducing React Query as a company-wide standard. - Revamped end-to-end testing with Cypress, transforming an unreliable suite into 114 stable, maintainable tests that improved UI reliability and developer confidence. - Improved accessibility (a11y) by integrating accessibility tools and automating tests, reducing failed rules by 65% (WIP), in collaboration with an external auditing company. - Authored and organized technical documentation, clarified legacy system behavior, and proposed new endpoints and features to improve maintainability and transparency. - Established a structured release queue that streamlined deployment scheduling and reduced production risks. - Restored the in-app announcements system by fixing outdated login dependencies, ensuring users received important notifications.

- Led the frontend implementation of a microservice that extended a legacy system and delivered successfully before Croatia’s HRK to EUR currency transition deadline. - Built a Next.js admin application with data virtualization for large datasets, allowing admins to manage data independently and reducing backend workload. - Mentored junior developers, conducted extensive code reviews, and led internal workshops on Cypress and React Testing Library, improving code quality and team efficiency.

- Redesigned and enhanced a Vergesense dashboard, creating more than 15 interactive live data widgets to improve user engagement and usability using MUI and Recharts. - Implemented new features for spatial data visualization and floorplan mapping, improving clarity and interactivity using GeoJSON, Leaflet, and Mapbox. - Improved developer experience during TypeScript integration by resolving issues with code quality tools that were slowing down workflow and productivity.