### **About the role** We’re seeking a **Senior Frontend Engineer** to help build our **AI\-driven Zero Trust Network Access (ZTNA)** platform. **It provides real\-time policy enforcement, secured remote access** for enterprise endpoints. You’ll design and develop AI\-driven interfaces that will make the experience outstanding for end users. **Important:** * This will be **a permanent employment** opportunity for candidates based in **Spain, Germany, and Poland**. ### **Key Responsibilities** * Build scalable frontend architecture using React 19, TypeScript, and Redux Toolkit or similar frameworks, following our strict layered architecture * Develop AI\-powered feature,s including real\-time chat using Server\-Sent Events (SSE), message streaming, and intelligent user interactions * Design and maintain our design system with Vanilla Extract synchronized with Figma designs * Write clean, testable code with comprehensive unit tests using Vitest * Collaborate cross\-functionally with Product, Design, Backend, and AI teams to define and ship features * Optimize application performance * Leverage AI\-assisted development with Claude Code or similar agents to accelerate feature development while adhering to our architectural patterns * Participate in code reviews and architectural decisions * Stay up to date with the latest front\-end technologies, frameworks, and best practices * Ensure seamless integration with backend APIs and services ### **Tech Stack You'll Work With** * **Core:** React 19, TypeScript 5\.9, Rsbuild (Rspack), Redux Toolkit 2\.10, RTK Query * **UI:** HeroUI (NextUI fork), Tailwind CSS 4, Vanilla Extract * **Forms:** React Hook Form, Valibot * **Routing:** React Router 7 * **Testing:** Vitest, React Testing Library * **Code Quality:** Biome, SonarQube * **Monitoring:** Sentry ### **Required Qualifications** * 5\+ years of professional experience in frontend development * Deep understanding of **HTML5, CSS3, and TypeScript**. * Redux experience with **Redux Toolkit, RTK Query,** and complex state management * Testing skills with unit testing frameworks (**Vitest, Jest**) and **React Testing Library** or similar * **RESTful API** integration with async data handling, caching strategies, and error management * Build tools experience with **Vite, Webpack, Rsbuild**, or similar modern bundlers * Problem\-solving abilities with debugging complex React applications and performance bottlenecks * Understanding of **CI/CD pipelines** and familiarity with Git workflows * Comfortable with **AI\-assisted** development and willing to adopt modern AI coding tools ### **Nice to Have** * Experience with **Node.js** or full\-stack JavaScript environments * Tailwind CSS, CSS\-in\-JS (Vanilla Extract preferred) * **Biome, ESLint**, or **Prettier** configuration and code quality tooling * **Sentry** or similar monitoring tools for error tracking and performance monitoring * **Docker** for containerization and deployment pipelines * Familiarity with **UI/UX design principles** and **Figma** * Contributions to open\-source projects or active participation in the developer community ### **What We Offer** * Competitive salary and performance\-based bonuses * Remote\-first and flexible work arrangements * Access to modern tools, technology, and professional development resources * Inclusive, transparent, and collaborative work culture * Opportunities for rapid career growth in a scaling technology company