Case Study

How this customer science company increased its hiring quotient by 10X

About Dunnhumby

Dunnhumby powers algorithms like the ones behind Tesco’s loyalty card. The key to a company’s success is its talent, and the U.K.-based customer science company wanted to hire the best data scientists. But like any other company, Dunnhumby faced an uphill task finding great people. Here is the strategy the company employed to increase the efficiency of its hiring process 10 fold.

What is Dunnhumby's story?

Dunnhumby is one of the global leading customer-science companies, which creates personalized customer experiences on digital, mobile, and retail platforms by analyzing data and applying insights derived from over one billion customers worldwide.

It was founded in 1989 with the mission of helping companies understand its customers’ needs. Dunnhumby worked with Tesco to develop the innovative Clubcard loyalty program thus helping one of the world’s largest retailers and brands to use the power of customer-data analytics from business decision-making to driving sales.


Dunnhumby partnered with HackerEarth to conduct customized assessments to hire recent graduates with the best knowledge of open source technology.


  • To scale and assess a large pool of candidates while utilizing minimal time and resources
  • To create customized skill-based assessments
  • 24/7 customer support

HackerEarth Recruit as a solution

Increase number of hires

Dunnhumby was able to see a drastic increase in the number of quality candidates that were screened and hired during campus hiring drives.

Customized skill-based tests

Dunnhumby created various types of questions and saved these in the custom library. Since there is no restriction on the number of questions that can be created and saved, the company can build its library and reuse questions when required.

Simple and easy-to-use interface

HackerEarth Recruit has a simple interface that is easy to navigate.

24/7 customer support

HackerEarth’s support team was available round the clock for any queries, feedback, and requirements.

number of candidates assessed

number of types of tests

What was the outcome?

Dunnhumby successfully conducted hiring drives for various positions, functions, and locations through campus hiring.

The team was very pleased with the support it received during the hiring process with respect to queries or concerns about the usage of the product and the increase in the conversion rates.

Hire the best developers using HackerEarth