Айдар User

I’m a Senior Frontend Engineer with 7 years of experience creating scalable, high-performance web applications using React, TypeScript/JavaScript, and Next.js across FinTech, E-commerce, and industrial automation. I develop user-friendly interfaces and architecture that accelerate product development—from UX/UI and performance optimization to process automation and CI/CD.

In my current role at a Trading Platform (NDA), I build and maintain shared React/TypeScript components for a company-wide design-system library used across multiple product teams. I lead accessibility and internationalization work from the start (WCAG, WAI-ARIA, RTL, keyboard navigation) and help replace fragmented legacy UI with standardized, production-ready primitives. I also drove AI adoption by building an internal Claude tooling marketplace that the team uses daily.

Previously at EVRAZ PLC, I developed and maintained scalable SPA applications on React/Next.js from architecture through production deployment. I optimized front-end performance—improving interface loading and response times by 40–50%—and implemented a UI kit/component library that accelerated new screen assembly by 70%+. I also contributed to migrating legacy code to a modern React/TypeScript stack and integrated real-time data flows via WebSocket.

Earlier roles strengthened my fundamentals in shipping interactive, conversion-focused features and integrating front ends with backend services. I worked on calculator modules and e-commerce solutions, improving loading time by ~40% and tracking 20+ conversion funnels to support better targeting. I enjoy collaborating with analysts, designers, and backend teams in distributed, cross-functional environments, and I take a pragmatic approach to AI-assisted development—using LLM tools thoughtfully for refactoring, test generation, and modernization.