Frontend Engineer
MarfeelBarcelona, Catalonia, Spain
Posted May 8, 2026
Full Time
About the Company
Marfeel empowers digital publishers to optimize mobile web performance and monetize content through a suite of real-time, no-code tools. Their platform delivers fast, AMP- and PWA-ready sites, header-bidding, push notifications, and advanced analytics that help teams make data-driven decisions. By combining site speed, conversion, and content discovery features, Marfeel enables publishers to attract and retain audiences while maximizing revenue. The company’s distinctive edge lies in its end-to-end, real-time solution that removes technical friction, allowing publishers to focus on creating engaging, personalized experiences.
Job Description
Marfeel is a publishing intelligence platform that helps publishers turn data into action. We are looking for a Frontend Engineer with a strong foundation in JavaScript and a sharp eye for performance to build the interfaces that bring our analytics platform to life.
Requirements
- 5+ years of experience building frontend applications at web scale
- Strong vanilla JavaScript skills
- Proficiency in TypeScript and React
- Experience with AI coding tools
- Solid understanding of HTML5, CSS and cross-browser development
- Deep understanding of browser performance
Benefits
- Flexible hours
- Support with home office equipment
- Subsidized health insurance
- Subsidized monthly plan to a large network of health and wellness centers
- Transport, restaurant and kindergarten tickets
- Free language classes
- Unlimited refreshments
- Loyalty vacation days
- Access to training platforms, courses and materials
- Referral bonus
