Senior Developer

Concentric Health Experience (CHX) is looking for a freelance senior frontend developer who has strong experience and is adept in various frontend frameworks. You will work closely with digital designers and UI/UX to realize our campaign visions. Must be able to adapt quickly as well as learn and utilize new and unfamiliar technologies.

 Your day-to-day will include:

  • Ensuring the technical feasibility of UI/UX designs
  • Optimization of application for maximum speed and scalability
  • Managing deliverables
  • Collaboration with team members and stakeholders


  • 2+ years developing production applications
  • 3+ years coding Javascript, HTML, CSS3
  • Hands on development with newer specifications of Javascript - ES6, ES7, ES8
  • Comfort with frameworks such as Vue and React
  • Comfort working with RESTful APIs
  • Common frontend development tools such as NPM, Gulp, and Webpack
  • Understanding of cross-browser compatibility issues and ways to work around them
  • Understanding of responsive design and development
  • Comfort working with source control and Git
  • Comfort working with various design software such as Photoshop, Sketch, and XD
  • Experience with old HTML specifications, such as XHTML 1.0, for email development is a plus
  • Experience developing for Veeva CLM presentations and Approved Emails is a plus
  • Experience developing in AEM is a plus
  • Experience with various backends, including but not limited to databases, CRMs, and hosting, is a plus
  • Experience developing mobile applications for iOS and Android is a plus

Freelancer will work on-site at our office in New York, NY

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