Join us we're hiring!

You will take a key role in our Web-Team and be responsible for implementing, integrating and testing new features in our web UIs and WebRTC middleware components. You will gain work experience in VoIP and WebRTC, especially how to build video call/conferencing solutions based on our VoIP platform and modern web technologies.

The ideal candidate has deep understanding how to write clean and maintainable code preferably with Javascript. We are looking for a solution-driven and goal-oriented personality with min. of 3 years’ experience in a similar role.


    • Integrate and implement new features in our customer self-care web ui
    • Develop and test web UIs on top of our VoIP platform
    • Develop, test and maintain WebRTC call/conferencing middleware server/client (RTC:engine)

    • Interesting, demanding, challenging tasks
    • Working in an international business environment.
    • Working independently in a global team of professionals
    • International travel opportunities, flexible working patterns and mobile working
    • State of the art technical equipment
    • We offer an attractive salary depending on your qualification and professional experience. Due to regulatory reasons we advise you that the collective agreement stipulates the fixed salary starting at EUR 2,825 gross/month for this position.
    • Further opportunities will arise with the steady growth of the company in the near future.


    Other Benefits @ Sipwise:

    • further education
    • language courses
    • flexible working hours and mobile working
    • cold & hot drinks, snacks & fruits

    • Web fundamentals (HTTP, HTML, CSS, Javascript)
    • Gained work experience in Node.js based web (api) projects (Express, Hapi, Strongloop,…)
    • Gained work experience with at least one client side web framework (Vue, React, Angular,…)
    • Familiar with TDD particularly in the npm ecosystem (Karma, Mocha, Jasmine,…)
    • Experience with build tools in the npm ecosystem (Webpack, Gulp, Grunt,…)
    • Familiar with virtualisation (Docker, Vagrant, Virtual Box,…)
    • Familiar with version control systems (Git, SVN)
    • Ability to work autonomous and in a team
    • Bachelor’s degree in IT field or equivalent experience
    • Fluent in English


    Bonus points for experience with:

    • WebRTC
    • SIP/XMPP
    • Gerrit
    • Docker/Vagrant

You can expect the spirit of an expanding, well-funded and growing company within a dynamic market environment. We offer opportunities to develop your skills and capabilities within a work environment of international experts!