Senior React Engineer – Real-Time Chat Application

Project overview

Unleash the Future of Interactive Communication — Create Cutting-Edge Real-Time Chat Experiences!

Krakow-based opportunity with hybrid work model (2 days in-office, 3 days remote).

As a Senior React Engineer, you will be working for our client to develop a sophisticated, production-grade React web application that delivers a seamless and polished chat experience as a standalone product. Join a forward-thinking team dedicated to pioneering real-time communication solutions, driving innovation and impacting millions of users worldwide.

Responsibilities

You’re ideal for this role if you have:

It is a strong plus if you have: (optional)

Language Required for the role:

Eligibility to work on this role:

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Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

• Design and develop a robust, production-quality React chat application.
• Build real-time streaming user interfaces that facilitate instant communication.
• Manage complex client-side state to ensure fluid user experiences.
• Leverage AI-assisted development tools to enhance productivity and code quality.
• Collaborate closely with UI/UX designers and backend teams to ensure feature completeness.
• Optimize application performance and scalability.
• Integrate streaming AI APIs, including OpenAI and Azure OpenAI, to enable intelligent features.
• Maintain high standards of code quality, testability, and maintainability.
• At least 5 years of professional experience with React and TypeScript.
• Strong proficiency with Tailwind CSS, shadcn/ui, Radix UI, or similar modern design systems.
• Proven experience building real-time streaming user interfaces.
• Comfort managing complex client-side state with modern state management solutions.
• Hands-on experience with AI-assisted development tools like Copilot, Cursor, or Claude Code.
• Experience working with streaming AI APIs (OpenAI, Azure OpenAI, SSE-based LLMs).
• Knowledge of Dynamics 365 or Dataverse (entities, activity types).
• Additional experience with streaming AI APIs and integration.
• Good command of English (Communicative level).
• Only candidates with an existing legal right to work in the European Union will be considered for this role.

Project details

• Start: flexible
• Remote: hybrid
• Location: Krakow, PL
• Rate: 30-330 EUR/h