Data Driven Applications

Smart and sophisticated

Modern apps need to do more than just look beautiful. Great user experience has become the standard, so in order to differentiate you need to build innovative technology. We develop web applications that use machine learning and natural language processing. We work with you in an Agile process, providing full-stack product development.

Cutting Edge Technology

Our tech stack is constantly evolving - We embrace new technology and we’re always learning. For big data pipelines and machine learning / NLP at scale we use Apache Spark with Python and Scala, typically deployed on AWS. We build micro-services that communicate via task queues such as RabbitMQ. Modern datastores provide a wide range of options, we work a lot with Elasticsearch, Postgres and MongoDB. Our web applications are moving towards a full-stack javascript/Node.js approach.

About Atchai

Established in 2010 and based in London, Atchai is a digital consultancy and development house based in London, UK. We’ve developed innovative digital products for both fast-moving start-ups and massive enterprise organisations such as Bank of England, NHS, and Turner Broadcasting.

interactive data visualization


product development

data visualisation



I am impressed!.. After playing around with some data I must say it works perfect! Just the tool I need...

Marcel Peterson

Information is
award winner

Information is beautiful winner

Featured in
the guardian

Featured in the guardian
Social Media Analytics and Visualisation


product development

big data

apache spark


Clinic indicator portal

open data

open government




John runs an agile, knowledgeable and experienced team of developers with a strong focus on enterprise, data-driven technical solutions. I have employed them for a recent, very challenging project mining the group associativity of social media networks.

I was highly impressed by the way John runs his team, the agile way in which they approach the work and even more pleased with their ideas and technical input. I would recommend John and his team at Atchai to anyone who needs a competent solution for any data-oriented enterprise project.

Adrian Leu