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JavaScript Service Worker Web IDE Full-time

Published at 2020-02-04 - Viewed: 1223 times - Nexedi SA in Lille, France

Task : Javascript Service Worker Web IDE
Location : Lille, France
Type : Trainee
Duration : 4-6 Months
Reference : Offer-2020-Serviceworker-IDE
Description : Nexedi is looking for a Javascript developer interested in cribjs project, a Web IDE based on Javascript Service Workers. The main goal of the internship is to add source code self-editing to all offline HTML5 applications by extending existing implementations and proofs of concept.


  • Master service workers
  • Master HTML5 open source technologies such as JIO, renderjs, OfficeJS, cribjs
  • Implement a usable self-editable set of HTML5 applications


  • Contribute to HTML5 projects for industry-leading clients
  • Contribute to open source projects such as JIO, renderjs, OfficeJS and cribjs
  • Contribute to research projects to build the future of our open source stack


  • Passionate, self-driven.
  • Willingness to contribute to an open source ecosystem and the Free Software community.
  • Very Good programming skills in Javascript.
  • Good software development skills (version control, testing, debugging).
  • Good command of English.

About Nexedi
Nexedi has been developing free software since launching in 2001. We are maintaining software solutions (see our full stack) with over 10 million lines of code including:

  • ERP5 – ERP/CRM/DMS/e-business
  • Slapos – Cloud Orchestration and deployment
  • Wendelin – Big Data/Machine Learning
  • Neo – Distributed Storage
  • Resist – Resilient Mesh Network
  • Renderjs – Promise based component framework
  • jIO – Virtual File System and storage connector
  • NayuOS – Private OS
  • OfficeJs – Private, offline capable productivity AppStore
    Besides participating in various research initiatives, Nexedi provides customisation services for solutions with implementations being used by corporations such as Airbus, Sanef, Mitsubishi all around the world. We follow the principles of reflexive programming, enforce strict unit testing and emphasise using the latest web technologies.

Our economic model requires each developer to fulfill R&D objectives aiming at delivering short to medium sized solutions to customer requirements and progressing the evolution of our software stack. This way we try to be innovative and fund long term free software without the need for venture capital.

Nexedi Roadmap
Nexedi Roadmap

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