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Senior / Lead React Engineer (Mobile-Focused, Kotlin/Swift knowledge)

14000 - 21000 PLN
Net / Month / B2B
Architect/CTO
remote

We are looking for a Senior or Lead React Engineer with solid experience in mobile development and knowledge of Kotlin or Swift to lead the development of our cross-platform applications. You will take ownership of the frontend architecture and collaborate closely with backend, mobile, and product teams to deliver seamless user experiences across platforms.

Key Responsibilities

  • Lead mobile and web development using React (and optionally React Native).
  • Collaborate with native developers or contribute directly using Kotlin (Android) or Swift (iOS) when needed.
  • Own the frontend architecture, component structure, and performance optimization.
  • Coordinate technical decisions and mentor other frontend/mobile developers.
  • Contribute to the planning, estimation, and execution of mobile-first features.
  • Ensure code quality, scalability, and maintainability through reviews and best practices.
  • Work with product managers and designers to turn ideas into high-impact user experiences.

Requirements

  • 4+ years of professional experience with React/React Native.
  • Experience integrating with native mobile codebases (Kotlin or Swift).
  • Solid understanding of TypeScript, state management (Redux/Zustand/MobX).
  • Experience with mobile-first or mobile-app-heavy projects.
  • Ability to contribute to or review Kotlin/Swift code for platform-specific integrations.
  • Understanding of REST APIs, mobile performance, and app lifecycle.
  • Experience with unit testing, debugging tools, and performance profiling.
  • Strong communication and leadership skills — you know how to lead and not just code.
  • Understanding of CI/CD for mobile deployments
  • Nice to have Python exp

 What We Offer

  • Competitive salary depending on your experience ($4000–6000).
  • Opportunity to lead frontend/mobile direction and make tech decisions.
  • Access to innovative projects with cross-functional teams.
  • Minimal bureaucracy, real product ownership, and clear impact.
EzTechTonic
Product
50 - 100
Industry
IoT
Founded
2015

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