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Altoros

(791) Senior React Developer

Altoros
Poland · Full-time · Mid-Senior
Altoros, an established provider of software development services, is looking for a Senior React Developer.

Requirements:

  • 5+ years of professional experience in front-end development
  • Profound knowledge of JavaScript (ES6+)
  • Strong experience with React.js
  • Familiarity with other UI frameworks (Vue.js, Angular etc. — optional)and React-based frameworks such as Next.js (big plus)
  • Experience with state management tools (Redux, Zustand, Recoil, etc.)
  • Experience with modern build tools (Webpack, Vite)
  • Solid understanding of HTML5, CSS3, W3C standards
  • Experience with CSS-in-JS libraries and/or preprocessors (SASS, LESS, Styled Components)
  • Experience designing scalable front-end application architectures
  • Proficiency in using AI tools to enhance development workflow and reduce manual effort
  • Experience writing unit and end-to-end tests
  • Understanding of common design patterns and component-based architecture
  • Excellent communication skills and ability to work in customer-facing environments
  • English: B2+ / Upper-Intermediate+, comfortable with technical discussions and client interviews
  • A big plus: experience in cross-platform mobile development (e.g., React Native)

Responsibilities:

  • Develop new user-facing features using React.js
  • Build reusable components and front-end libraries for future use
  • Write and maintain unit tests (Jest / Testing Library or similar)
  • Leverage AI-powered tools (e.g., GitHub Copilot, ChatGPT) to boost productivity and automate repetitive development tasks such as test writing, code refactoring, or documentation
  • Collaborate closely with UX/UI team to deliver the best possible customer experience, balancing business goals and technical constraints
  • Produce internal documentation to support maintainability and onboarding
  • Participate in sales/estimation process as a technical specialist
  • Attend meetings with potential and current customers, as needed

Join Altoros Team!

Key Skills

Ranked by relevance

react ai design patterns javascript ai tools angular webpack html5 sass css ui
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Country Guide

Poland

Fast-growing Central European IT hub

Posted
Sep 25, 2025
Type
Full-time
Level
Mid-Senior
Location
Warsaw
Company
Altoros

Industries

IT Services IT Consulting

Categories

Information Technology

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