Senior React Engineer - Real-Time Chat Platform

Empower seamless real-time communication - craft innovative chat experiences that connect and inspire!

Kraków-based opportunity with hybrid work model.

As a Senior React Engineer, you will be working for our client, a leader in cutting-edge communication technology. You will help build a polished, production-ready React web application designed to deliver an exceptional chat experience as a standalone product. Join a dynamic team committed to pushing the boundaries of real-time streaming and AI integration, shaping the future of digital interaction and user engagement.

Your main responsibilities:

• Develop and maintain a production-grade React chat application with smooth real-time streaming capabilities.
• Build intuitive, dynamic UI components for chat interactions that seamlessly handle complex client-side states.
• Collaborate with the team to create high-quality frontend features, leveraging AI-assisted development tools to boost productivity.
• Manage challenging client-side states effectively, ensuring responsive and reliable user experiences.
• Leverage modern design systems such as Tailwind CSS, shadcn/ui, or Radix UI to produce visually polished interfaces.
• Integrate streaming AI APIs (OpenAI, Azure OpenAI, SSE-based LLMs) to enhance interactive capabilities.
• Optimize performance and scalability of the chat platform to support real-time, engaging user interactions.
• Work within a flexible hybrid model, combining in-office collaboration and remote productivity.

You're ideal for this role if you have:

• 5+ years of advanced React and TypeScript development experience.
• Proven expertise in building real-time, streaming UI applications.
• Strong command of Tailwind CSS and modern design systems like shadcn/ui or Radix UI.
• Hands-on experience with AI-assisted development tools such as Copilot, Cursor, or Claude Code.
• Demonstrated skills managing complex client-side states in fast-paced environments.

It is a strong plus if you have:

• Experience working with Dynamics 365 / Dataverse, including entities and activity types.
• Hands-on knowledge of streaming AI APIs such as OpenAI, Azure OpenAI, or similar.

Language required for the role:

• English (Communicative level).

Eligibility to work in Europe:

• Only candidates with an existing legal right to work in the European Union will be considered for this role.

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.