Stepan Khvatov

Frontend Developer · React · Next.js (App Router)

Building product SPAs, SSR sites and fintech interfaces.

About

Frontend since late 2020. React, TypeScript, Next.js. Novosibirsk, remote within Russia.

Wallets and payments at SquareFi and DexPilot. At Immigrant Invest — SEO and a monorepo with thousands of pages. Then a Next.js product again, this time with server-side auth.

Day to day: RSC, JWTs in httpOnly cookies, Core Web Vitals. English A2. Yandex Practicum: web in 2020, React in 2022.

Email stepan@khvatov.ru if you have a role or a project.

Ask about my work

Ask in the chat — stack, projects, how the work is set up.

Replies are generated by AI (DeepSeek) in my voice — not from me personally.

Projects

  • SquareFi

    Middle Frontend DeveloperNovember 2025 — February 2026

    Virtual card wallet for crypto: top up with stablecoins and pay online. Web app and Telegram Mini App on Next.js 15.

    Stack

    • Next.js 15
    • TypeScript
    • Zustand
    • Telegram Mini App
    • Vitest
    3D render of USDC, USDT, and DAI stablecoin tokens

  • Immigrant Invest

    Middle Frontend DeveloperApril 2023 — June 2025

    Residency and citizenship by investment: three products, multiple brands and regional sites, multilingual content and SEO platforms.

    Stack

    • Next.js
    • TypeScript
    • Tailwind CSS
    • i18n
    • SSG
    • ISR
    Immigrant Invest logo

  • DexPilot & 0xProcessing

    Frontend DeveloperMarch 2021 — April 2023

    Crypto platform Zenfuse → DexPilot: order terminal with live exchange data. Separate frontend for the 0xProcessing payment gateway.

    Stack

    • React
    • TypeScript
    • Redux Toolkit
    • WebSocket
    • Solana
    • Strapi
    0xProcessing product preview

  • didigallery

    Frontend Developer, Flake DesignDecember 2020 — March 2021

    Online art gallery and storefront at didigallery.com: catalog, checkout, and payment provider integrations.

    Stack

    • React
    • JavaScript
    • Strapi
    • REST API
    • Payment APIs
    didigallery website preview