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RinatGumarov/README.md

Rinat Gumarov

Senior Frontend Engineer at TradingView. I build performance-critical interfaces for fintech and trading products, with a focus on frontend architecture, responsiveness, and data visualization.

I have 9+ years of product engineering experience across trading platforms, automated investing, and early-stage products.

Selected impact

  • TradingView — contributed to Pine Script version control, Pine Editor and Strategy Tester responsiveness, trading visualizations, architecture decisions, mentoring, and technical interviews.
  • Cindicator / Stoic — owned the primary frontend direction for an automated crypto-investing product serving 20K+ clients and $230M in cumulative AUM, including exchange-connection and portfolio interfaces.
  • Mentoreum — co-founded and led engineering for a product that reached more than RUB 1M in monthly GMV and approximately RUB 300K in monthly revenue.

Featured work

An instrumented React and TypeScript case study built around 100,000 deterministic synthetic trades. It demonstrates a virtualized row window, tooltip updates isolated from the dashboard render path, structural performance benchmarks, automated tests, CI, ADRs, and a reusable observer package.

Live application · Storybook · npm package

Co-built end-to-end in a two-person team. Splithub is a shipped expense-splitting product spanning a SwiftUI iOS app, NestJS API and background worker, Next.js web surface, Cloudflare email worker, PostgreSQL and Redis, realtime updates, CI/CD, and production operations.

App Store · Source code is private. The App Store release is published through my co-creator's developer account.

Core expertise

React, TypeScript, Next.js, React Native, SwiftUI, frontend architecture, performance profiling, virtualization, charting, Monaco/LSP, Web Workers, testing, Node.js, GraphQL/REST, CI/CD, and pragmatic technical leadership.

Contact

Telegram · GitHub

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  1. frontend-performance-lab frontend-performance-lab Public

    Instrumented React case study for rendering 100,000 trades with structural performance evidence.

    TypeScript