Egor Kryzhanouski

Frontend Engineer

Amsterdam, North Holland, Netherlands2 yrs 6 mos experience

Key Highlights

Expert in building high-performance web applications.
Specialized in React ecosystem and scalable architecture.
Proven track record in 0→1 product development.

Stackforce AI infers this person is a Frontend Engineer specializing in Fintech and Web3 analytics.

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Skills

Core Skills

ReactTypescriptData Visualization

Other Skills

Continuous IntegrationContinuous Delivery (CI/CD)viemSentryNext.jsRedux ToolkitSWRTailwind CSSCode SplittingReduxReact QueryChartJSD3.jsHTMLReact.js

About

Frontend Engineer with 3+ years experience building high-performance web applications across startups and fintech. Specialized in React ecosystem, complex data-intensive UIs, and 0→1 product development. What I focus on: - Performance: profiling, virtualization for large datasets (10k+ rows), optimizing renders and bundle size - Product UI: complex forms, data-heavy dashboards, intuitive UX flows that scale - Architecture: reusable patterns, maintainable structure, modern state management Tech: JavaScript, React, Next.js, TypeScript, Redux Toolkit, RTK Query, Tailwind.

Experience

2 yrs 6 mos

Total Experience

10 mos

Average Tenure

9 mos

Current Experience

Tinkoff

Frontend Engineer

Sep 2025 – Present · 9 mos · Remote

T-Bank (formerly Tinkoff Bank), one of the world's largest and most profitable independent digital banks, serving 50+ millions of customers with cloud-based financial services.
As a Frontend Engineer, I building internal internal web apps for credit history workflows: data-heavy screens and complex dynamic forms.
Achievements:
Delivered internal user portal 0→1: repository setup, CI/CD pipeline configuration, Keycloak authentication integration, and production deployment
Built reusable filtering system adopted across multiple product areas, handling data tables with 10,000+ records and complex backend integration
Shipped responsive internal landing page with SEO optimization and production deployment configuration
Developed complex multi-step forms with 50+ dynamic fields, conditional validation rules, and real-time field reconfiguration based on user selections

Continuous IntegrationContinuous Delivery (CI/CD)TypeScriptReact

Syntech

Frontend Engineer

May 2024 – Jun 2025 · 1 yr 1 mo · Minsk, Belarus · Remote

Developed and later took ownership of key frontend features for Web3 analytics platform, focusing on real-time blockchain data visualization and performance optimization.
Product & Impact:
Built wallet analytics dashboard (5,000+ users / ~500 DAU) with real-time transaction tracking
Shipped 30+ reusable components and 10+ pages used across the platform
Implemented transaction status visualization, reducing support inquiries by ~20%
Performance & Scale:
Improved observability with Sentry + Betterstack, cutting recurring production issues by ~25%
Built performance-critical features for complex nested forms and multi-chart dashboards
Technical Execution:
Built 10+ NestJS endpoints for blockchain data integration (viem, ethers.js), including validation, error handling, and caching-friendly response patterns
Designed a clean API-to-UI data flow (typed DTOs, shared interfaces), enabling parallel frontend/backend work and reducing integration friction
Tech Stack: React, TypeScript, Next.js, Redux Toolkit, SWR, Tailwind CSS, NestJS, viem, ethers.js, Sentry, Betterstack

viemSentryReactTypeScript

Freelance

Frontend Engineer

Sep 2023 – May 2024 · 8 mos · Minsk, Belarus · Remote

Front-end Developer | NFT Analytics Tool (Sep 2023 - May 2024)
Built interactive analytics dashboard with real-time data updates and 6 chart types (line, bar, pie, bubble, stacked, candlestick)
Optimized rendering for 5,000+ data points using React Query for caching, virtualization, and lazy loading - eliminating UI lag during scroll and interactions
Implemented CSV/PDF export with custom filtering, enabling users to analyze 1,000+ NFT transactions offline
Reduced initial page load time by up to 40% through code splitting and prioritizing critical rendering paths
Dashboard became primary analytics tool for ~300+ active users, processing ~2,000+ daily queries
Tech Stack: React, TypeScript, Redux, React Query, Tailwind CSS, ChartJS, D3.js

Code SplittingData VisualizationReactTypeScript