2600hz Back End Developer

separate(List, [], []), {“Dependable”,”Problem Solver”}


Dallas, TX or Remote

Full Time


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Position Overview

Vivant is looking for experienced 2600hz Kazoo (API-based VoIP platform) developers, specifically Erlang & VoIP development.

Integrate our UI/UX to Kazoo utilizing the existing APIs of Kazoo in order to enhance and add additional functionality to the existing UI/UX developed in version 1 & 2. Further optimize the APIs for speed. Day to day responsibilities would be to further develop the existing feature set, create new features based on business need.


Scope of Work

  • Fix existing bugs in the erlang modules and backend
  • Implement new features and add new API endpoints, update/enhance existing APIs, and provide documentation
  • Optimize system for response time and speeds
  • Coordinate with other development teams for UI/UX and 3rd party integrations
  • Implement processes and test tools for testing features and bugs, automated QAs


  • We are using the open-source version of 2600hz (Kazoo) and using existing APIs and revamped the entire UI/UX to meet our business needs. 
  • In Addition, we have created some Custom APIs due to the demand and requirements of the project. 
  • All of the information related to the project is well documented

Skills Required

  • EXTREMELY well organized & punctual
  • must be a self-starter, out of the box thinker, problem solver
  • be able to work under pressure, keep organized and look for solutions
  • Professional, well mannered, exceptionally well organized, self-motivated, hard (smart) working, reliable communication method (phone, Internet), out of the box thinking, problem solver.
  • An experienced developer with a minimum of 3 years of experience in VoIP development and more specifically in 2600hz kazoo technology.
  • Experience in Erlang and OTP
  • Experience with gitlab and CI/CD process
  • Knowledge and experience of the following is an added bonus;
  • Technologies : Kamailio, FreeSwitch, RabbitMQ, Couchdb
  • Protocols: SIP, HTTP, AMQP
  • Linux system administration

Basics & Common Sense

  • Must have a reliable high speed Internet connection
  • Working computer and a quite place to work with noise cancelling headphones
  • We will be hiring 3 to 5 developers for this phase of the project. All developers will be full-time positions at 40 hours per week. 
  • The project will last from 18-24 months and may extend further depending on future functionality creations.
  • Developers can work in their time zone but must collaborate among themselves and attend weekly progress reviews.