Senior UI Frontend Engineer Portugal

Senior UI / Frontend Engineer (React)

Location: Tagus Park Portugal
Work Model: Hybrid 3 days on-site
Contract: Full-time
Salary: gross/year 14 salaries
Relocation: No relocation support provided (Only EU citizens locals or candidates with valid Portuguese residency will be considered)

About the Role
We are looking for a hands-on Senior UI / Frontend Engineer to implement high-quality modern frontends for our robotics software platform. Working closely with our Frontend Architect you will turn architectural concepts into production-grade React is a 80% hands-on development role. We need a strong product engineer who loves writing clean reusable code every day and wants to stay on a technical track rather than moving into pure architecture design or people Youll Do

• Implement Modern Frontends: Build complex workflows interactive dashboards and real-time operational views for an Autonomous Mobile Robot (AMR) platform.
• Write Production-Ready Code: Translate architectural choices into highly scalable performant React and TypeScript components.
• Connect Complex Systems: Integrate REST APIs seamlessly handling asynchronous data flows edge cases error states and strict user permissions.
• Drive Engineering Quality: Embed unit integration and E2E testing directly into your daily workflow while maintaining pull request discipline and secure coding practices.
• Collaborate & Mentor: Work side-by-side with our Frontend Architect Backend DevOps and Robotics teams while mentoring junior developers via code reviews.

What Youll Need

• Expert React & TypeScript Skills: Deep practical experience building complex web applications (not just landing pages prototypes or simple CRUD forms).
• Data-Driven UI Expertise: Proven ability to transform large dense and complex datasets into intuitive real-time KPI visualizations and executive dashboards.
• Modern Development Stack: Mastery of HTML5 CSS3 adaptive styling responsive design modern build tools package managers and Git workflows.
• Testing & CI/CD Discipline: Solid experience with automated frontend testing frameworks and working inside containerized (Docker) development environments.
• Pragmatic Problem-Solving: A collaborative mindset to challenge or clarify frontend architectures constructively and execute them quickly.

Nice-to-Have (Differentiators)

• Experience with state management and data fetching libraries (e.g. React Query Redux Toolkit Zustand TanStack ecosystem).
• Hands-on testing experience with tools like Playwright Cypress Jest Vitest or Testing Library.
• Data visualization experience using frameworks like Recharts Nivo ECharts or AG Grid Enterprise.
• Background in robotics IoT industrial automation manufacturing or multi-tenant SaaS cloud platforms.
• Familiarity with Figma collaboration workflows and accessibility standards (WCAG).
  
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