Frontend Engineer I (Hybrid)

About the role

Colliers is looking for an experienced Frontend Engineer I for its newly established Technology Hub in Madrid. You will join the founding team that shapes the hub's culture, practices and technical direction, working in a hybrid model (remote and onsite). The hub collaborates with international teams to deliver technology solutions for commercial real estate, and the Global Technology Hub is led by people with a background in technology startups.

Key responsibilities

• Build scalable, maintainable B2B software products and modular, reusable UI components with React and TypeScript
• Ensure frontend performance, accessibility and responsiveness across browsers and devices
• Integrate with RESTful and GraphQL APIs and collaborate with backend engineers on interfaces
• Contribute to architecture discussions, technology evaluations, and system and code reviews
• Maintain the design system and component library based on Figma and Storybook, and help implement automated frontend tests
• Translate Figma designs into high-fidelity interfaces and give technical input during design phases
• Advocate for high-quality engineering standards, take ownership of production systems and support test-first development
• Work with DevOps and Engineering Operations to optimise build pipelines, observability and deployment automation
• Align with Product Teams on requirements and priorities, and comply with information security and regulatory requirements

Required profile

• No prior frontend experience with React and TypeScript, but strong knowledge is expected
• Fluent in English and Spanish
• Passion for building web applications with high-quality component libraries and interfaces
• Ability to work in a fast-paced, growing tech environment

Required skills

• React and TypeScript
• Internationalization, accessibility (WCAG), performance optimization and modern CSS (CSS Modules, Tailwind or Emotion)
• Agile distributed environments with Jira, GitHub, Miro and Azure DevOps
• Frontend test automation (Playwright, Cypress)
• Secure development practices (e.g. XSS prevention) and compliance frameworks (ISO27001, GDPR, SOC2)
• Preferred: Figma, Storybook, state management (Redux, React Context), observability tools (Sentry, Lighthouse)