Krzysztof Poziomek - Frontend Developer Portfolio

Banking Application Modernization Project

• ●Contributing to React 18 migration for major Polish bank ensuring WCAG 2.2 compliance
• ●Delivered 6+ production components following enterprise Design System standards
• ●Setup and environment configuration reducing development startup by 70%
• ●Achieved 90% test coverage with comprehensive Jest + Storybook integration
• ●Conducted systematic code reviews maintaining 95% team approval rate

International Education Platforms Development

• ●Contribute to building a comprehensive admin dashboard serving 100+ school administrators
• ●Delivered 15+ advanced features for platform and system management
• ●Developed Japanese lesson booking system with Zoom SDK integration
• ●Created three distinct interfaces: Admin, Teacher, and Student portals
• ●Implemented Japanese localization with complex character encoding
• ●Established role-based access control across educational institutions

Creating and implementing new tools for contact-center, in internal system

• ●Created and maintained critical applications within Alior Bank's enterprise ecosystem
• ●Led JavaScript to TypeScript migration improving code reliability and maintainability
• ●Administered telecommunication infrastructure supporting 200+ banking professionals
• ●Built comprehensive contact center management tools from ground up
• ●Optimized existing web systems achieving enhanced performance and operational stability