Arkadiusz Klimek

Led the architecture and development of a customer portal that increased user engagement by 40%, utilizing React, TypeScript, and Redux-Toolkit. Developed secure payment solutions integrating Stripe and PayPal while ensuring PCI compliance. Championed responsive design boosting mobile traffic by 50%. Directed a team of 6 developers under Agile methodologies, improving delivery speed and reducing bugs. Integrated AI-driven chatbots significantly reducing customer service calls. Enhanced testing with Jest and Cypress achieving 90% coverage. Reduced deployment times by leveraging Docker and Kubernetes. Mentored junior developers and utilized PostgreSQL for tracking progress.

Architected interactive UIs and data visualization components using Next.js, TypeScript, and Redux-Toolkit. Integrated OAuth2 and JWT authentication improving security. Designed responsive interfaces utilizing Chakra UI and multiple charting libraries that reduced bounce rates by 31%. Collaborated with backend teams for RESTful and GraphQL API integration, improving response times by 43%. Developed AI-based user interfaces contributing to a 40% improvement in system scalability. Presented industry webinars and optimized CSS architectures reducing styling redundancies by 25%. Conducted comprehensive cross-browser and unit testing.

Developed a real-estate platform with Vue.js delivering responsive, cross-browser solutions that improved load times and engagement. Revamped analytics dashboard UI increasing daily active users by 20%. Refactored legacy code cutting frontend codebase size by 15% and migrated to single-page apps improving engagement by 12%. Led internal workshops on Vue.js and modern JavaScript ES6+ features. Acted as UX/UI designer using Figma ensuring pixel-perfect designs. Created responsive web and mobile interfaces using React, Angular, Vue.js, and React Native, enhancing cross-platform consistency and user engagement.