MVP development for Time To Travel startup. Built admin panel from scratch with content management, multi-level auth, and performance optimization. PageSpeed improved from 71 to 89.

Responsive e-commerce site with 500+ catalog items, product comparison, and CRM integrations. Achieved +25% mobile conversion and +23% engagement through analytics.

Large-scale corporate web app maintenance using React + Redux. Bug fixing, new features implementation, and UI/UX improvements in distributed team environment.

5 responsive websites with custom price calculators, dynamic forms, and animations. Improved Lighthouse scores by +25 points on average through optimization.