You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Yurii KorovkoYK

Yurii Korovko

Senior React, Next.js & React Native Developer

300 €/día
Alicante, ES
8-15 años

Tiempo medio de respuesta: 1h

Acerca de Yurii

I help startups, agencies, and product teams build reliable web and mobile applications using React, Next.js, React Native, and TypeScript.

With 7+ years of experience, I’ve worked on production-grade products across web and mobile, including SaaS platforms, dashboards, e-commerce flows, mobile apps, API integrations, authentication, payments, and performance improvements.

I can help with:
• Building MVPs from an idea, Figma, or existing requirements
• Developing React / Next.js web applications
• Creating React Native / Expo mobile apps
• Improving existing frontend codebases
• Fixing bugs, performance issues, and UX problems
• Integrating APIs, Supabase, Stripe, Clerk, Firebase, and other services

I’m especially useful when you need someone who can understand the product goal, move fast, communicate clearly, and deliver clean, maintainable code without unnecessary complexity.
  • Ucraniano

    Bilingüe o nativo

  • Inglés

    Competencia profesional completa

Acepta trabajo presencial
Alicante (hasta 30 km)

Experiencia

  • Z2A Digital
    Senior Full-stack Developer
    DIGITAL AND IT
    junio de 2025 - Hoy (1 año y 1 mes)
    Tel Aviv, Israel
    Built and scaled a real-time analytics/admin platform for affiliate networks, DSP campaigns, and mobile attribution workflows.

    Key contributions:
    • Built a feature-first React 19 dashboard for campaign, conversion, and postback analytics
    • Integrated REST APIs for real-time data automation, conversion tracking, and analytics workflows
    • Implemented media handling, file uploads, and campaign asset management
    • Built reporting interfaces with advanced filters, charts, tables, alerts, and time-based monitoring
    • Improved frontend architecture, type safety, and performance using OpenAPI-generated TypeScript clients
    • Automated common reporting and operational workflows to improve team efficiency

    Tech stack: React, React Router, TypeScript, TanStack Query, Zustand, Node.js, NestJS, REST APIs, OpenAPI
    Typescript React.js Node.js NestJs API REST
  • Group107
    Senior React Native Engineer
    DIGITAL AND IT
    enero de 2025 - junio de 2025 (5 meses)
    Tel Aviv, Israel
    Built mobile-first features for Bucket, an affiliate marketing platform used by advertisers and affiliates to manage campaigns, track performance, and optimize ROI.

    Key contributions:
    • Developed React Native screens and reusable UI components for campaign and analytics workflows
    • Integrated REST APIs for real-time performance data, user actions, and account management
    • Improved mobile UX for complex dashboards, filters, and data-heavy interfaces
    • Implemented reliable state management, form handling, and error handling flows
    • Worked closely with product and backend teams to ship features quickly and safely
    • Improved app stability, maintainability, and frontend delivery speed

    Tech stack: React Native, Expo, TypeScript, JavaScript, REST APIs, Firebase, Sentry
    Typescript React Native Expo Firebase Sentry
  • Group 107 - MP Check
    Senior Front-end Engineer
    DIGITAL AND IT
    diciembre de 2023 - enero de 2025 (1 año y 1 mes)
    Tel Aviv, Israel
    Built a healthcare platform for online medical screening, helping clinicians manage device data, records, lab results, patient flows, and imaging workflows.

    Key contributions:
    • Developed and maintained a scalable, high-performance React.js application
    • Implemented efficient state management and optimized data-fetching flows
    • Built role-based access control for secure multi-user healthcare workflows
    • Created responsive, mobile-first interfaces for a collaborative cross-device experience
    • Implemented internationalization for multi-language support
    • Built PWA features with offline support and faster loading times
    • Wrote unit and integration tests to improve reliability and code quality
    • Conducted code reviews and helped maintain frontend engineering standards

    Tech stack: React.js, JavaScript, TypeScript, PWA, Service Workers, Jest, Testing Library, i18n
    Typescript React.js PWA Cypress i18n

Recomendaciones

Sé el primero en recomendar a Yurii

Ayuda a este freelance a destacar compartiendo tu experiencia.

Estos perfiles de freelance también coinciden con tus criterios

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Formación

  • Specialist's
    Simon Kuznets Kharkiv National University of Economics
    2017
    Specialist's

Conjunto de habilidades profesionales

Categorías