Senior Frontend Engineer

November 14, 2026

Remote (within country)

Senior

Barcelona, Spain

Keep in mind

Another language required
Spanish

Also worth knowing

English is required

Description

The Senior Frontend Engineer will develop and evolve customer-facing web products for travelers and accommodations. The role focuses on scalable frontend architecture, quality, performance, accessibility, and collaboration with the product team.

Responsibilities

Develop the frontend of the web product in an Agile environment using AI tools to create maintainable and scalable code
Connect web applications to backend services via REST and GraphQL API
Ensure code quality with unit, integration, and E2E tests, improve the team's testing infrastructure, and conduct detailed code reviews
Monitor and optimize application performance, accessibility, and user experience
Mentor the development team through pair programming and application of best practices
Work with the product team to define technical requirements and solution architecture

Requirements

Proven experience building complex web applications with modern JavaScript or TypeScript and React
Good understanding of CSS architecture, design systems, and frontend architecture based on Domain-Driven Design principles in JavaScript
Experience writing comprehensive tests and ensuring high code quality
Deep knowledge of REST API and modern HTTP protocols
Experience mentoring developers and conducting effective code reviews
Familiarity with Clean Architecture, building test systems, performance monitoring, or web accessibility is a plus
Fluency in Spanish and English is required

Conditions

Permanent full-time contract with remote work within Spain
Must be willing to travel to Barcelona two to three times a year
Flexible working schedule
Can work from anywhere up to 30 days a year
Flexible compensation through Cobee, including health insurance, meal and transport cards, childcare and training allowances
Special discounts on long trips are available

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