Senior React Developer

CloudDevs; Poland; On-site; PLN 200,880 - 279,000; Full time

Job summary

A leading software development provider is seeking a Senior React Developer in Poland. The role involves developing user-facing features, collaborating with UX/UI teams, and utilizing AI tools to enhance productivity. Candidates should have 5+ years of experience in front-end development, strong skills in React.js, and proficiency in JavaScript. Excellent communication skills are required for client interactions.

Qualifications

• 5+ years of professional experience in front-end development.
• Proficient in using AI tools to enhance development workflow.
• English: B2+ level for technical discussions.

Responsibilities

• Develop new user-facing features using React.js.
• Collaborate closely with UX/UI team for customer experience.
• Write and maintain unit tests.

Skills

JavaScript (ES6+)

React.js

AI tools

HTML5

CSS3

PhoneGap

Tools

Webpack

Jest

Redux

Job description

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!