Our portfolio companies are always looking for great people. Apply to the opportunities below or send us your profile.

Junior Support Engineer at Cleo AI
London, GB

Cleo is an AI assistant that helps over 600,000 people in the UK, US and Canada feel great about their money. We are a fast-growing start-up, backed by the founders of Skype, Transferwise and Zoopla.

We're looking for software engineers to help us deliver product at scale. You'll work within a bright, experienced backend team of 6 engineers and a wider engineering team of 10, which we're growing to 20+ over the next year.

What you'll work on:

  • You’ll gain a broad experience of the Cleo product allowing you to discover exactly what’s happening behind the scenes when things haven’t gone as planned.
  • You’ll use your software engineering skills to track-down, report and prioritise bug fixes with our development team, and write your own code to provide those much-needed tools, fix those pesky glitches and speed-up any repetitive tasks for you and your team.
  • You’ll work closely with our first-line support team, our engineers, third-party service providers and directly with our customers, to bring every situation under control in an empathetic, customer-centric manner.
  • You'll help develop the technical knowledge of our first-line support team with ongoing training for the complex parts of our system.

Additionally you will:

  • Be responsible for assisting the other members of the engineering team to develop and maintain our internal applications.
  • Aid in the full systems development life cycle from requirements capturing through to design and development.
  • Monitor the technical performance of internal systems.

Our Stack:

We're big proponents of doing the simple thing first, the 80/20 rule and writing simple, elegant, self documenting code. Here's our current stack:

  • Ruby
  • Rails
  • Heroku
  • Postgres
  • Redis
  • Github
  • CircleCI
  • Minitest
  • React (Typescript/ES6 classes)
  • SCSS
  • Webpack
  • Jest/Enzyme


About you:

  • Experience developing web applications (Ruby, Python, Java etc).
  • Can reduce complex problems to simple solutions consistently.
  • Are excited by what we're building at Cleo; you are product-focused and care about making our users' lives better.
  • Enthusiastic with a strong desire to learn and develop your skills “on the job”Excellent written and verbal communication.

This is a fantastic entry-level opportunity for a newly qualified applicant looking to move into the software industry. If the idea of cutting code and helping customers excites you, get in touch.

Our process:

  1. Quick phone call with a member of our engineering team to find out more about your experience and why you want to work at Cleo.
  2. Short take-home test.
  3. Onsite interview:
    1. Technical discussion with a senior engineer.
    2. Pairing on an interesting problem
    3. Meet the CEO and COO.


Cleo is a great place to work:

  • An above market compensation package (Base + Equity). We're prepared to pay for the very best.
  • Work at one of the fastest growing tech startups anywhere in the world. We recently closed a competitive Series A with Balderton who join a formidable investor base including the founders of Skype, Transferwise, Zoopla, Lovefilm, Climate corporation, SongKick and others.
  • The team is exceptional. You'll get to work with brilliantly bright and dedicated individuals every day.
  • Our mission is unique. We want to radically improve everyone’s relationship with money. We're not maximising the time consumers spend in a feed, getting fast food delivered, or building an incrementally better bank. We're changing an industry in a visceral way, which you get to see every day in our customer feedback.

Stay in touch with Balderton

Sign up for our newsletter to stay up to date on news from Balderton, and our portfolio.