Lead React Engineer at iTeamly – Kraków | Jobyssey

We are looking for an experienced Lead React Engineer to join an international team working on modern digital solutions for the travel and aviation industry.

You will take a leading role in building and evolving customer-facing web applications supporting digital travel experiences — from searching and booking flights to managing trips and additional services. You will combine hands-on development with technical leadership, helping shape frontend architecture, engineering practices and the growth of the team.

Why join us

Work on a modern product used in the travel & aviation industry
International environment and experienced engineering team
Opportunity to influence frontend architecture, technical solutions and engineering practices
B2B contract
Long-term cooperation and opportunities for professional growth
Competitive employment package and benefits

7+ years of professional experience in frontend development
Strong expertise in React
Very good knowledge of JavaScript / TypeScript
Strong experience with Next.js or similar modern frontend frameworks
Deep understanding of frontend architecture, design patterns and best practices
Strong understanding of HTML and CSS
Experience building scalable and maintainable frontend applications
Experience integrating applications with REST APIs
Practical experience with frontend testing strategies and tools
Good understanding of Git and CI/CD practices
Experience mentoring engineers or acting as a technical leader within a team
Good command of English
Ability to take ownership of technical solutions and drive initiatives independently

Nice to have:

Experience working in the travel, aviation or e-commerce industry
Strong knowledge of Next.js, SSR/SSG approaches and frontend performance optimization
Experience with modern state management solutions (e.g. Redux, Zustand, React Query)
Experience designing frontend architecture for large-scale applications
Knowledge of UI/UX principles and experience working closely with designers
Experience with cloud platforms and modern deployment practices
Familiarity with AI-powered development tools (e.g. GitHub Copilot, Claude Code, Cursor) and using AI to improve engineering workflows
Experience integrating AI-powered features into web applications
Experience working in international and distributed engineering teams

Lead React Engineer

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