Front-end UI/UX Engineer

Holisticon Connect is a division within NEXER GROUP, a custom software development company started in Poland in 2017 with a team of over 140 people. The company works with world-renowned brands from Scandinavia, the UK, and Western Europe.

• At least 5 years of professional experience in frontend development.
• Strong expertise in React and TypeScript, including hooks, state management, and modern frontend patterns.
• Hands-on experience with UI/UX design practices and tools (e.g., Figma, Sketch), including wireframing, prototyping, and user flows.
• Excellent knowledge of CSS, including CSS-in-JS or utility frameworks, responsive design, and cross-browser compatibility.
• Experience with automated testing (Playwright for E2E, Testing Library/Jest for unit and integration tests).
• Understanding of accessibility standards (WCAG), semantic HTML, and ARIA best practices.
• Experience building or evolving a design system and component libraries.
• Experience working with APIs (REST, GraphQL, or similar), including authentication, caching, and error handling.
• Understanding of frontend performance optimization (e.g., code splitting, lazy loading, profiling).

Nice to have:

• Experience with data visualization (e.g., D3, OpenLayers or similar).
• Familiarity with Storybook-driven development.
• Basic backend awareness to support effective end-to-end collaboration.
• Experience with analytics and telemetry (tracking user behavior, product insights).

• Design and build intuitive, high-performance user interfaces for advanced, AI-powered image analysis solutions.
• Work closely with cross-functional teams including software engineers, product owners, and domain experts to translate complex scientific and product requirements into user-centered experiences.
• Shape the frontend architecture, drive UX decisions, and evolve a scalable design system ensuring usability and technical excellence.