Senior Frontend Product Engineer (React + TypeScript) - B2B

Fresha is a platform serving the global beauty and wellness industry, with over 120k businesses, 450k professionals, millions of clients, and more than 1 billion appointments managed. The company is scaling rapidly and the role involves working on a product used worldwide.

• Deep experience building and interacting with AI agents to amplify development output.
• Expertise in modern React and TypeScript with experience shipping large-scale, consumer-facing web applications.
• Solid understanding of GraphQL (Apollo or urql) and REST APIs.
• Experience working with design systems.
• Fluency in web performance, cross-browser compatibility, and responsive design best practices.
• Familiarity with JavaScript/TypeScript testing frameworks and a testing-oriented mindset.

• Own and evolve the core booking & scheduling engine to ensure scalability and seamless user experience for millions.
• Design, build, and ship new user-facing features using React and TypeScript.
• Own features end-to-end including discovery, technical design, implementation, testing, rollout, and observability.
• Extend and maintain the company-wide Design System to ensure UI consistency and quality.
• Write robust automated tests using Cypress, Jest, and React Testing Library.
• Collaborate with Product, Design, Backend, Infrastructure, and Mobile engineers to deliver features.
• Use AI agents and LLM-powered tools to enhance development efficiency.
• Explore and potentially contribute to backend, DevOps, or mobile areas if interested.

The role is based in Warsaw, Poland, requiring onsite presence 4 days per week. The contract type is B2B, and the interview process involves multiple video and in-person stages lasting up to 4 weeks. The company uses AI tools to assist recruitment but final decisions are human-made.