Leonid Kuznetsov

Senior Frontend Developer at Bright Pattern

Enterprise analytics platform for large-scale call center statistics and operational dashboards. Designed configurable dashboard editor with drag-and-drop widgets, built dynamic widget configuration and layout persistence, and developed data-driven UI components for large datasets. Reduced dashboard rendering latency by 10–20% and led complex UI refactoring initiatives to improve frontend architecture for high-complexity analytics dashboards.

Lead Frontend / Lead Programmer at Mail.ru Group

Led frontend development for advertising management platform (React + TypeScript). Built complex product UI with Redux / MobX / Effector; reduced legacy code by ~20% through structured refactoring; improved performance by 10–15% via algorithm and rendering optimizations. Mentored developers and designed complex process-visualization tree components; participated in frontend stack evolution decisions.

Frontend Developer at Yandex

Developed billing and payment UI systems (React + TypeScript); built data-driven product interfaces; integrated REST APIs and Node.js services; maintained payment web forms and backend integrations; improved payment form selection algorithms and contributed to shared frontend infrastructure.

Lead IT Engineer at Sberbank Technology

Developed money transfer application frontend (React + TypeScript + Redux); contributed to Java backend components; introduced TypeScript and modern frontend tooling; improved frontend architecture patterns.

Frontend Engineer at Virtu Systems

Built React + Redux web applications; developed reusable UI components; introduced modern frontend tooling (webpack).

Web Developer at NDM Systems Inc.

Early-stage frontend and Node.js development; built APIs for unit testing; worked in Linux-based development environments.