Data Scientist at Cleo

Looking to do work that matters?
We get it – it’s why most people come to Cleo. Together we’re fighting for the world’s financial health, building an AI that helps our users make the best money decisions from day one. We’ve helped 4 million people so far with personalised insights and a voice you don’t expect in FinTech. But it’s time to do more.
As we enter the next phase, we’re looking for more improvisers, data geeks and grown ups who want to own their work and create meaningful change.
The team 
You’ll join the existing data science function here at Cleo; a thoughtful and collaborative of six dedicated data scientists with significant industry experience that is at the heart of everything we do at Cleo. You’ll build and deploy in-production models that developers will feed directly into the product.
This position is essential in the expansion of both product and business. We are highly data driven, whether that be understanding natural language, deriving insights from financial data, or determining which financial product is best suited to a user. We have interesting problems to solve on an ever-increasing scaleHere's a great blog post on how data science works at Cleo!
What you’ll be doing

Improving our current machine learning models in credit risk, income classification and fraud
Actively building and productionising classifiers - no dependencies on engineering teams
A wide range of ML tasks: classification, recommender systems, NLP
Conducting regular A/B tests across the journey of a Cleo user
Building models of user-segmentation, marketing attribution, customer lifetime value etc.
Working closely with engineers to make sure we collect the right data to produce relevant business insights

About you

At least 2 years of experience in data science or related roles
Ability to write production quality code in Python and SQL
Experience deploying machine learning / deep learning algorithms into production
Experience conducting large scale A/B experiments
Experience working with AWS technologies such as EC2, S3, Sagemaker
A strong ability to communicate findings to non-technical stakeholders in a concise and engaging manner

Nice to have

Experience with containers and container orchestration: Kubernetes, Docker, and/or Mesos, including lifecycle management of containers
Experience with NLP methods a plus

What do you get for all your hard work?


Salary banding can be seen here. You'll also have equity options. You can view our progression framework and salary bandings here: https://cleo-ai.progressionapp.com/ - This role would be from level DS2 to DS3 depending on experience - we can pay between £45,000-£79,000 p.a

Work at one of the fastest growing tech startups, backed by top VC firms, Balderton & EQT Ventures

Cleo is a culture of stepping up. We want, and expect you to grow and develop. That means trying new things, leading others, challenging the status quo and owning your impact. You’ll have our support in everything you do. But more importantly, you’ll have our trust.


We treat you as humans first, employees second. Because we can’t fight for the world’s financial health, if we’re not healthy ourselves. This means the usual perks but it also means flexibility.

Other benefits include; 

25 days Annual leave a year + public holidays
4.30pm finish every Friday 
Regular lunch-and-learns as part of a general learning culture
Online courses and internal training to level up your skills like from coding, to SQL, to management training 
Choose your own gear, ask for the tools you need, and we’ll seek them out for you 
Cleo socials and activities 
Online mental health support via Spill
Access to Pushfar - online platform for external mentorship

A clear career progression path through Progression https://cleo-ai.progressionapp.com/ 

And many more!


We are committed to making Cleo a more diverse and inclusive workplace. We are making continuous changes in order to make sure that all voices, especially those of minorities are heard, supported and celebrated. Our work doesn't stop at hiring, and we are providing every employee with training, support and development throughout their Cleo career, alongside training specific to inclusivity.#LI-AS1