Who are we? WhereTo is a pioneering business travel startup from San Francisco that has transformed into an agile development and design studio within the Flight Centre Travel Group. Our mission is singular: to make business travel better for everyone. Our cutting-edge AI-powered platform leverages machine learning to recommend personalized travel options that adhere to travelers' preferences, company policies, and budgets. We also provide real-time travel tracking, reporting, and cost analysis, empowering companies to optimize their travel programs and cut costs. ⭐ THE OPPORTUNITY We are seeking a passionate, motivated, and skilled Senior Front End Engineer to join our growing engineering team at the WhereTo Lab in Barcelona. This is an exciting chance to be a crucial part of the team leading the return to travel. If you are a self-driven team player, and committed to engineering and operational excellence, we want to hear from you ROLE OVERVIEW Step into the role of Senior Front End Engineer and lead the development of user interface components, utilizing advanced JavaScript libraries and tools such as React.js, Redux, and Node.js/npm. You will ensure our code is performant, scalable, and user-friendly, and you will be instrumental in cultivating a culture of craftsmanship and continuous improvement within the team. YOUR KEY RESPONSIBILITIES Build and maintain UI components with a focus on performance, scalability, and usability. Utilize JavaScript libraries and tools like React.js, Redux, and Node.js/npm. Lead and assist the Front-End team in coding with performance, scalability, and usability in mind. Work extensively with the virtual-DOM, pure reducers, and immutable data structures. EXPERIENCE & QUALIFICATIONS 4 years of professional software development experience (internships and personal projects not included). 2 years of experience with React.js or other web frameworks (Vue.js, Angular, Ember, etc.). Experience with state containers (Redux, Alt, Flux). Proficiency with modern JavaScript (ES6, Babel, FlowType and/or TypeScript, Webpack). Solid understanding of HTML5, particularly with IE quirks. Experience with JavaScript testing frameworks (Mocha, Jasmine, Jest). Familiarity with Agile development and TDD/BDD methodologies. Strong understanding of Git fundamentals. Bonus: Experience with pure-functional programming (Ramda, Lo-Dash FP, etc.) or interest in full-stack development. BENEFITS At WhereTo, we believe in a fun and supportive work environment: Attractive compensation package including health insurance. 25 days off per year 5 compensation days reduced working hours during summer bank holidays. Hybrid & Flexible working hours. Fantastic office located in the heart of Barcelona, at Plaça Catalunya. Free language lessons (English, French, Spanish, or Catalan). Table tennis on the terrace, a kitchen area with free snacks, fresh fruits, and drinks. Work with an international and talented team. Numerous activities organized by our ambassadors. <