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Senior Data Engineer

Partner Services Tapdaq UK | London, United Kingdom | Full Time

Job Description

Join the Mobile Future with Tapjoy

Tapjoy is a creative workplace, comprised of people with different backgrounds, cultures, skill sets, and global perspectives. With offices all over the globe, Tapjoy provides mobile engagement and monetization services for leading advertisers and app developers. Advertisers rely on Tapjoy's diverse suite of rewarded Interplay™ ads including video and rich media to impact performance. Developers utilize our technology and mobile expertise to acquire and monetize users. The Tapjoy SDK is currently embedded in over 20,000 mobile apps, reaching 620 million monthly active users. Additionally, Tapjoy works with Fortune 500 brands and the Top 200 grossing app developers.

Here at Tapjoy, we promote a Joyful, Engaged, Trustworthy, and Innovative workplace with our company core values, and regularly celebrate and recognize the people who embody our values. Tapjoy believes its people are its greatest investments and we take extra care to support your time inside and outside of work with a multitude of benefits. In order to maintain what makes us so special here, we are committed to continued education and involvement in our community to protect and expand our one-of-a-kind workplace.

Position Title: Senior Data Engineer

Position Description/Responsibilities: 

Tapdaq has built some of the most sophisticated machine learning algorithms in the mobile ad industry, which is something we’re extremely proud of. 

Every day we process 100’s of millions of data points on ad performance, user and device behaviour, and in app events. We then use these data points within our existing machine learning algorithm to accurately predict which ad source will pay out the highest amount for a publisher, as well as provide aggregated performance statistics to our customers in a fast and efficient manner. 

Our data pipeline is key to the business goals, and the community of app publishers who trust us to optimise their ad revenues. As the data engineer, you will be responsible for maintaining our existing data pipeline, including persisting data to our data lake, streaming data to analytics services and BI tools within our stack, and working with engineers in the team to create an effective database schema for our needs.

Also, you will be greatly involved in productionalizing scalable machine learning models and developing our A/B testing infrastructure making sure our models and experiments are evaluated efficiently.

Finally, as a team at Tapdaq, we’re always looking to iterate on our process in order to drive better results. You’ll be analytical of your own work, but in a productive and friendly culture where we all support one another. 

You will be:

  • Reporting to our Lead Data Scientist.

  • Maintaining and improving our data lake processes and infrastructure.

  • Productionalizing scalable machine learning models.

  • Writing unit, integration and regression tests where appropriate.

Core Competencies include: 

  • A strong understanding of the Python language, Java and/or Scala is a bonus.

  • Comfortable with queueing architecture and large data sets, Apache Kafka.

  • Comfortable with the following tools: Apache Spark, AWS Elastic MapReduce.

  • Previous experience productionalizing scalable machine learning models, particularly user segmentation models is a string plus. 
  • Previous experience in Ad Tech is not essential, but would be a bonus.


  • A minimum of 4 years experience working in a Data Engineering capacity.
  • A university degree in Mathematics/Computer Science is a strong plus.

Tapjoy is a one-of-a-kind workplace, comprised of people with different backgrounds, cultures, skill sets and global perspectives. In order to maintain what makes us so special here, we support work-life balance both inside and outside the office in many ways.

If you want to learn about building an amazing team with industry-leading technology, you want to surround yourself with brilliant, passionate entrepreneurial teammates at Tapjoy.

Tapjoy is an equal opportunity employer. We believe that diversity and inclusion lead to stronger, more innovative teams and better business results; we want to draw from the broadest talent pool possible and encourage qualified applicants. Tapjoy does not discriminate on the basis of sex, race, ethnicity, color, age, sexual orientation, gender (including identity and expression), disability (mental or physical), religion, national origin, citizenship, marital status, military or veteran status, or any other protected classification protected by applicable law; we will provide reasonable accommodations for qualified individuals with disabilities, and pursuant to applicable fair chance ordinances, we will consider for employment qualified applicants with arrest and conviction records.

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