Senior React Engineer – Real-Time Chat Platform

Our client is a leader in cutting-edge communication technology developing a polished, production-ready React web application for an exceptional chat experience. The opportunity is Kraków-based with a hybrid work model.

• 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.

Nice to 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.

• Develop and maintain a production-grade React chat application with smooth real-time streaming capabilities.
• Build intuitive, dynamic UI components for chat interactions handling complex client-side states.
• Collaborate with the team to create high-quality frontend features using AI-assisted development tools.
• Manage complex client-side states to ensure responsive and reliable user experiences.
• Leverage modern design systems such as Tailwind CSS, shadcn/ui, or Radix UI for 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 user interactions.
• Work within a flexible hybrid model, combining in-office collaboration and remote productivity.

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