is working with some of the largest names in tech on their blockchain technology.

We need engineers to help build out a platform to scale to support the worlds largest enterprises, with all of the security and resiliency considerations that come with the space.

About us

We're a bootstrapped, cashflow positive blockchain business based in Old Street. Our customers include the biggest names in tech, and we need to grow!

We’re no stranger to the open source being responsible for the web3j group of projects and contributors to other projects in the Ethereum ecosystem.

Not only are we working with all the latest and greatest technology, we are also forming significant partnerships with other leaders in this space to create the best platform.

You can also read about some of the things we've been doing on our blog.

About you

Right now most of our work is on the Java Virtual Machine, and we’re looking for Java or Kotlin developers to join us. It’s certainly preferred if you understand Ethereum blockchain technology and Solidity, but not essential as we’ll teach you all about it.

We also expect you to be either familiar with or willing to work with:

  • Docker
  • Azure/AWS
  • Spring Boot and the wider Spring Ecosystem
  • Messaging and middleware technologies
  • ReactiveX
  • JavaScript/React
  • Go
  • Haskell

It certainly helps if you’ve got experience with them too. Also being a startup, we'd want you bring your own views to the table on where the sweet spot is with agile practices such as TDD, CI, CD, BDD, Pair, Kanban, Lean.

Other stuff

We’re based in the heart of London's tech scene in Old Street.

Ideally you’ll have a GitHub repo that showcases your work. Otherwise please ensure you have something you can show us when we speak to you.

We're a very tech-savvy organisation, who are big fans of open source - you can have a look at our CEO's GitHub profile at