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Frontend Developer (React)

Poland, Warsaw

Format: On-site, Warsaw
Project: CyberProAI

We are looking for a Senior Frontend Developer with expertise in React, TypeScript, frontend architecture, and microfrontends to design and develop scalable, high-performance web applications. The ideal candidate has strong experience in frontend design, state management, and cloud-based deployments (AWS).

About the company:

CyberproAI is a global AI & Cyber Defense company, with over 15 years of experience in cybersecurity, artificial intelligence, and digital defense. The company develops its own proprietary technologies and platforms, helping governments, enterprises, and educational organizations strengthen cyber resilience and improve digital security.

Responsibilities:

  • Design and develop scalable, maintainable frontend architectures using React and TypeScript.
  • Implement microfrontend architectures for modular and scalable applications.
  • Ensure high performance, accessibility, and security best practices in HTML, CSS, and JavaScript.
  • Work with state management solutions (Redux, Zustand, or React Context).
  • Optimize frontend performance and user experience across different devices.
  • Integrate with RESTful APIs, GraphQL, and WebSockets for seamless data flow.
  • Collaborate with backend and DevOps teams to deploy applications on AWS.
  • Utilize modern build tools (Webpack, Vite, esbuild) for efficient development.
  • Mentor junior developers and conduct code reviews.

Requirements:

  • 5+ years of experience in frontend development with React, TypeScript, HTML, CSS, and JavaScript.
  • Strong experience in frontend architecture, microfrontends, and design patterns.
  • Proficiency in state management (Redux, Zustand, React Query).
  • Experience with AWS cloud services for frontend deployments.
  • Knowledge of frontend performance optimization and testing (Jest, Cypress, Playwright).
  • Experience with responsive design and UI/UX principles.
  • Experience with containerized environments (Docker, Kubernetes).
  • English: High proficiency – MUST
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