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Senior Data Scientist (f/m/d)

  • adjoe
  • Playtime Data Science
  • Full-time
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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 
  • Free of charge access to our EAP (Employee Assistance Program) which is a counseling service designed to support your mental health and well-being.
    • Apply for this job

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    How We Hire

    Most people spend around one-third of their life at work. It’s our priority to build a team of people growing not only the business but their adtech careers.
    Life at adjoe

    Tech Team

    Introduce Yourself
    Tell us about your experience and background. Let’s get to know each other!
    Showcase Your Skills
    Take home a case study to work on – demonstrate your technical skills.
    Talk to the Team
    We’ll give you feedback on your case study and ask you to demonstrate your technical expertise.
    Have a Call with Our Co-Founders
    You’ve made it this far! In this last step, adjoe’s Co-Founder Carlo Szelinksy will get to know you.
    Decision Time
    We’ll let you know how you did! Our team will reach out to the most suitable person for our team.

    Business Team

    Introduce Yourself
    Tell us about your experience and background. Let’s get to know each other!
    Showcase Your Skills
    Take home a case study to work on – demonstrate your specialist skills.
    Talk to the Team
    We’ll give you feedback on your task and ask you to demonstrate your expertise to our Business leads.
    Have a Call with Our Co-Founders
    You’ve made it this far! In this last step, adjoe’s MD Thorsten Wiesner will get to know you.
    Decision Time
    We’ll let you know how you did! Our team will reach out to the most suitable person for our team.
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    Achieve Great Things – Receive Great Things

    There’s more to life than work. That’s why we’re big on employee perks.
    office days 3× a week
    30 vacation days
    quarterly hackathons
    applike group parties
    WFH 2× a week
    on-site gym & personal training
    learning & development program
    quarterly team events
    3 remote weeks per year
    dog-friendly office
    German classes reimbursement
    monthly company lunches
    Employee Assistance Program (EAP)
    weekly fitness & yoga classes
    cross-departmental onboarding
    referral bonus up to €7,000
    visa support
    free snacks & drinks
    mentorship program
    subsidized transport ticket
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