Front End Developer

  • Job Ref: 4258
  • Location: Las Rozas, Spain
  • Type: Permanent


Start-up tecnológica con más de 60 empleados cuyo propósito es ofrecer la base de datos médico-científica más fiable y accesible del mundo.

Buscamos gente con ilusión que se sienta orgulloso de construir el producto y con pasión por la tecnología.



  • Knowledge in Javascript (ES6) (Junior Profiles: Basic. Senior Profiles: Advanced).
  • Knowledge of CSS3 (Junior Profiles: Basic. Senior Profiles: Advanced).
  • Knowledge of HTML5 (Junior Profiles: Basic. Senior Profiles: Advanced).
  • DOM elements and their compatibility with current browsers (IE10+).
  • CSS properties and their compatibility with current browsers (IE10+).
  • Version control (CVS) with Git (Bitbucket, Gitlab, Github).
  • Knowledge of a Javascript framework (React or Meteor).
  • Build/bundle management tools (Webpack).
  • Knowledge in package and script managers (NPM, Yarn).
  • Creation and maintenance of unit tests (Jest, Mocha).
  • Continuous integration (Jenkins, Docker).
  • Handling of some text editor or IDE (WebStorm, VS Code, Sublime Text, Atom).
  • Knowledge in use of REST API.



  • Agile development methodologies (SCRUM or Kanban).
  • Knowledge of CSS preprocessors (SASS, LESS, Stylus, PostCSS).
  • Use of tools for documentation (Jsdoc).
  • Knowledge in project management with Jira (+ Confluence).
  • Experience in using a database manager (MySQL, MongoDB, etc).
  • Experience with multi-platform testing tools (BrowserStack).


Teresa Quintana, Senior IT Recruitment Consultant - Your e-Frontiers consultant for this job

Teresa is a Senior Technical Recruiter for e-Frontiers based in Madrid having had previous HR experience in Germany where she lived for 3 years, working closely with international candidates. Teresa holds a Degree in Psychology and post graduate education in Human Resources and Recruitment. She speaks English, German and Spanish and has a track record of hiring software engineers and various technical resources for a range of clients, from start-up companies to large multinationals across multiple industries. Part of Teresa’s success is her ability in comprehending client and candidate needs and providing successful results for both parties.

Specialises in: Frontend, .NET, Senior positions, Business Analysts, PHP