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Senior Frontend Developer - Air360

Spain, Comunidad de Madrid, MadridDATA & Air360

Job description


If you:

  • Have a startup mindset: You enjoy moving fast with a customer-focused approach.
  • Are comfortable with agile and able to take ownership of a feature without having very detailed specifications.
  • Believe that done is better than perfect in a context where an ordinary day counts.


Our Stack:


  • Our app is built using C# 5.0 / .Net Core/[ASP.Net](http://asp.net/) Core Web API.
  • Using the latest FE technology to build Frontend with the best UI/UX
  • We have a micro services-oriented architecture using Docker & K8S
  • Quickly evolving data stack using AWS / Postgresql / BigQuery



Help us revolutionize the eCommerce experience…


Scalefast helps amazing brands develop a successful Direct-to-Consumer online business. Our next-generation technology platform is built to optimize modern eCommerce. Our end-to-end infrastructure includes global merchant-of-record agreements, fulfillment, subscription, loyalty programs, and finance functions to deliver new revenue and delightful brand experiences. With a global presence (USA, Europe & Asia), Scalefast has proven itself with major brands like L’Oréal, Microsoft, Club Med, Hasbro or Sega.


On top of our end-to-end DTC eCommerce offering, we provide our clients with Air360, a first-class Customer Experience and Analytics platform, which enables brands to understand how users interact with websites and mobile apps to boost customer engagement and rate conversion.


Our powerful technology brings a real complementary upgrade for lots of brands using Google analytics or similar tools.

Many brands and merchants are feeling the pain to maintain a proper tagging strategy and Air360 removes that barrier and allows brands to completely automate this process. 


You can find out more about Air360 here:



What can I expect at Scalefast?


  • Competitive salary and a career path adapted to each person's abilities and experience within a growing company.
  • 2 days a week working from home
  • A flexible schedule and total conciliation between work and family life, including a reduced timetable for one month in the summer.
  • Become part of a multi-cultural happy family where you can contribute with your experience and learn from the experience of others.
  • Work with unique brands
  • Get the opportunity to influence the future of our services and platform
  • Excellent working environment with frequent social activities (hackathons, Spartan races, quarterly whole-team social events).
  • Central Madrid office is an 8-minute walk from Atocha train station, with a bus stop and a BiciMad station right outside the office.
  • Kitchen and dining facilities and a fully stocked games room with games consoles, etc., are great to disconnect from work for a while and have fun with your colleagues.
  • Discounted parking space in the office building if you are coming by car and bicycle parking for those worried about their carbon footprint.
  • Access to private sales by some of the exclusive brands we work with
  • Enrollment in English lessons that take place during working hours
  • Mental Health Wellbeing Program

Job requirements


In our Air360 team, you will:


Working in the development of our new product, the Air360 Marketing Analytics tool that specializes in performance-enhancing, mobile and eCommerce experience analytics,

  • Work with cross-functional teams to create and deliver new experiences for our clients.
  • Research and analyze new tendencies and technologies to improve the tool.
  • Build new features and ensure the quality of the platform.
  • Share and develop your expert knowledge of Software Engineering best practices, Software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations.

If you have:

  • 5 or more years of professional experience working in a product-driven environment.
  • Core JavaScript, TypeScript
  • Frontend frameworks React/ Angular/ Vuejs
  • Strong understanding and experience of the DOM, HTML5, CSS3, jQuery and JavaScript (ES5 & ES6) and debugging Javascript code
  • Good understanding of UI/UX design principles and creating beautiful and enjoyable UI/UX.
  • Experience with TypeScript, RxJS, PWA, or other Reactive programming techniques/libraries
  • Experience with Responsive Web Design (RWD) patterns, Single Application Page
  • Proven ability to create working prototypes (proof of concepts) at varying degrees of fidelity using HTML, CSS, and JavaScript
  • Experience building and maintaining a reusable component library


Nice to Have, But Not Required:

  • Knowledge of how Google Chrome Extensions are developed
  • WebSockets and LocalStorage experience.
  • CI/CD skills
  • AWS & Google Cloud
  • Docker or Kubernetes (basic knowledge)


Today, more than 20 million people around the world buy through our stores. We celebrate the diversity of our customer base, and we want our employees to reflect those differences. At Scalefast, we’re committed to equal employment opportunity regardless of race, colour, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender, gender identity or expression, or veteran status. We strive to be a more equal opportunity workplace.

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