London, UK

Now a Vonage Company, Nexmo is the emerging leader in the $100B+ cloud communications platform (CPaaS) market. Customers like Airbnb, Viber, Whatsapp, Snapchat, and many others depend on our APIs and SDKs to connect with their customers all over the world.

As businesses continue to shift to a real-time, customer-centric communications model, we are experiencing a time of explosive growth.

The Engineering team at Nexmo is a fast growing group of talented engineers. A small, but talented, team of Go developers is looking at expanding its size, in order to match the multiple challenges associated with scaling globally a Voice stack. High performance and processing large volumes of events / data in real time are just a few of those challenges.

Our developers work on an exciting mix of both greenfield and existing projects, giving them an opportunity to explore new technologies.


  • Developing a highly-concurrent and distributed system;
  • Performance optimisation and problem diagnosis;
  • Designing/Developing for high-availability;
  • Designing/Developing and testing new features;
  • Supporting release and documentation of developed features
  • Estimating the effort required to develop and implement;
  • Help defining coding standards and development processes;
  • Participating / Contributing in upstream open-source projects.

Essential Experience:

  • Programming experience with one of the following Go, Java, Python especially as a programmer in production grade systems;
  • Experience dealing with highly concurrent, distributed architectures/systems;
  • Experience with building HTTP based services;
  • Willingness to get hands dirty and not afraid of low level details;
  • Ability to carefully break down the problem in small pieces;
  • Ability to effectively communicate problems and solutions to the different team members.

Nice to have:

  • Exposure to WebRTC based applications;
  • Experience profiling / optimising performance
  • Exposure to event-driven systems.

Most weeks there is a new technical presentation by members of engineering on technology topics of the speaker’s choice. This is a great way to learn, but also contribute your own presentation.

How to apply

Send your CV to OR apply directly to;

Does this job really require Go skills? If not, please report it and we will take a look.