Senior Data Scientist Ad Roas Pod at Chartboost

Who we are:
Chartboost is the leading in-app monetization and programmatic advertising platform. We reach a global audience of over 700 million monthly active users and process over 2.7 trillion monthly advertising auctions. The Chartboost SDK is one the most widely integrated mobile ad SDKs and through the Chartboost Exchange, Ad Network, DSP and other services, we empower mobile app developers to build businesses, while connecting advertisers to highly engaged audiences.

Now we’re looking for an exceptional Senior Data Scientist as part of a team focused on the development of our product for advertisers who want to optimize their User Acquisition efforts toward ad revenue. Ad revenue-generating games are a core part of our advertiser client base, and we are dedicating a group of data scientists to refine the predictive models and feature pipelines to grow this offering.
Impact you will make: 

Develop and refine predictive models that drive a business-critical and highly visible product
Propose and engineer new model features from our continuously growing and diversifying stores of data
Design and evaluate A/B tests of new features and model structures
Explore and develop expertise with cutting-edge infrastructure (built and bought) for model development, deployment, and observability
Proactively identify opportunities for cost optimization in model training and serving
Collaborate closely with Product and Engineering teams to co-own the delivery of results for clients

Who you are:

BS/Masters/PhD degree in Engineering, Statistics, Math, Economics, Machine Learning or Computer Science
5 to 7 years of practical experience in a Data Science or Machine Learning role, and sound understanding of Data Science and Machine Learning principles
Track record of improving accuracy and efficiency of large-scale ML models
Experience with continuously-deployed and frequently-retrained production ML models using a distributed training framework such as Tensorflow or Pytorch
Experience with ETL pipelines for large and/or fast data using a framework such as Airflow
Intermediate Python proficiency for scripting and model prototyping; experience with Spark or large data frameworks; proficient with SQL

The following experience would be a plus:

GCP Data Scientist certification
Ad Tech or Mobile Game Industry


Perks:

Competitive salary with bonuses based on performance
Restricted Stock Units (RSUs) - you will have the potential of RSUs depending on the level/role
Company sponsored daily lunch, healthy snacks, and coffee in our cool office in the centre of Barcelona - near subway and train stations
Flexible schedule based on core hours and the possibility of working from home dependent on team
English/Spanish lessons and/or other investments in your professional development
Private health insurance
Gym membership 
Transportation reimbursement
23 days of paid time off per year
15 paid holidays per year
Team building events


More about us:
We are proud of the product we've built and appreciate the impact it has on other people's businesses and lives. We want to be surrounded by people who are always finding opportunities to try something new and grow. We love data and anything that helps drive intelligent decisions and always design with the user in mind.  Sounds like a fit? Join us, and be part of the team that will change the future of mobile gaming!
We are an equal opportunity employer — we celebrate diversity and are committed to creating an inclusive environment for all employees and make our hiring decisions without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.