Senior Data Scientist (f/m/d)

adjoe is a leading mobile ad platform developing cutting-edge advertising and monetization solutions that take its app partners’ business to the next level. Part of the applike group ecosystem, adjoe is home to an advanced tech stack, powerful financial backing from Bertelsmann, and a highly motivated workforce to be reckoned with.

Meet Your Team: Playtime

Playtime is a time- and event-based ad unit that continuously rewards users with in-app currency – for the time they spend and events completed while playing mobile games. We connect advertisers to 200+ million Playtime users and serve 2bn requests per day at low latency. We ensure that all parties involved have a positive experience. Advertisers get more users for their apps. Monetizers earn revenue for users on their platforms. Users play fun games while simultaneously getting rewarded. Our data science team powers the engine that distributes our ads. They solve multiple tasks such as developing algorithms to provide the most relevant ads for users, predicting user interests and inclinations, and dynamically adjusting pricing based on these predictions. Because the user base is very diverse we are using deep learning models that we could show to be able to serve the best ads to users.

Within the Playtime team you will be responsible for services and models that we use to provide automated solutions for our advertisers.

What you will do:

• Build, maintain & develop new and existing models (classifications, recommendations, etc.).
• Dive into state-of-the-art algorithms and deep learning models to create recommendation systems, predict user behavior, optimize user retention, advertiser’s ROAS (return on advertising spend) and other dynamic values.
• Drill into data from various sources to generate insights and discuss them with your colleagues.
• Act as an advocate for data-related topics in the company and become the go to person in your area of expertise.

Who you are:

• You have 5+ years of professional experience in the Data Science field.
• You have a strong knowledge of Python, R, Scala, Julia or similar typical programming languages for Data Science.
• You have experience drilling into large amounts of data coming from various sources – including AWS Athena, Kafka, Spark, Flink, S3, MySQL.
• You have experience developing deep learning models and have applied them already in a production environment with large amount of traffic (>1 million predictions per day)
• You are able to dive deep into mathematical foundations and explain complex topics in a simple way.
• You are a strong team player and enjoy helping others.
• Plus: Tech & Infrastructure knowledge: Airflow, hosting models, deploying models, etc. Plus: Experience in the AdTech industry.

Heard of our perks?

• Work-Life Package: 2 remote days per week, 30 vacation days, 3 weeks per year of remote work, flexible working hours, dog-friendly kick-ass office in the center of the city.
• Relocation Package: Visa & legal support, relocation bonus, reimbursement of German Classes costs and more.
• Happy Belly Package: Monthly company lunch, tons of free snacks and drinks, free breakfast & fresh delicious pastries every Monday
• Physical & Mental Health Package: In-house gym with personal trainer, various classes like Yoga with expert teachers.
• Activity Package: Regular team and company events, hackathons.
• Education Package: Opportunities to boost your professional development with courses and trainings directly connected to your career goals 
• Wealth building: virtual stock options for all our regular employees.
• Free of charge access to our EAP (Employee Assistance Program) which is a counseling service designed to support your mental health and well-being.