Lead Frontend Engineer - Spain

Collate is the AI for Data platform built on Open Metadata, the open semantic context layer for AI. It automates data management, answers questions in natural language, and gives enterprises a single source of truth for every AI agent and analyst. Global 2000 companies and innovative startups rely on Collate to put AI for data into production. Headquartered in Silicon Valley, Collate is backed by Venrock, Unusual Ventures, and Karman Ventures.

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We are looking for a Lead Frontend Engineer to help shape the next generation of the Collate user experience.

• Lead and evolve Collate’s frontend architecture, establishing scalable patterns and best practices across the UI.

• Build high-quality, performant user experiences using React, Type Script, Vite, Tailwind CSS, Untitled UI, and Node.js.

• Translate complex data, governance, lineage, observability, and AI workflows into intuitive, polished user experiences.

• Partner closely across the organization to deliver features from concept through production.

• Establish and maintain a consistent, reusable component and design system using Untitled UI + Tailwind CSS.

• Define and improve frontend testing, quality, and reliability practices using Playwright and automated CI/CD.

• Mentor frontend engineers, lead code reviews and architectural decisions, and help raise the overall engineering bar.

• Improve frontend developer productivity through better tooling, documentation, development workflows, and automation.

• 7+ years of software engineering experience, with significant experience building complex web applications.

• Deep expertise in React and Type Script, with strong knowledge of modern frontend architecture and development patterns.

• Strong experience with Vite, Tailwind CSS, and component-based design systems; experience with Untitled UI is a plus.

• Strong experience with Playwright or similar end-to-end testing frameworks and a commitment to automated quality.

• Solid understanding of Node.js, REST APIs, web performance, accessibility, responsive design, and frontend security.

• Experience building SaaS applications, preferably complex, data-intensive, or enterprise products.

• Strong product and design sensibility, with the ability to turn complex technical concepts into simple, intuitive experiences.

• Demonstrated technical leadership, mentoring ability, and strong collaboration skills across Engineering, Product, and Design.

• Competitive salary and Seed stage startup equity.

• Fully remote.

• Work with smart, motivated, like-minded peers, whom you can teach and learn from to grow together.

• You’ll be joining a small team with no bureaucracy or politics and get to work directly with the founders.