Stellenausschreibung

adjoeis 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: Programmatic Supply

Did you know that in-app ads are sold in a real-time auction before they get rendered by adjoe’s Android and iOS SDK in thousands of mobile apps?

It’s exactly for this that adjoe has built its own platform. Our backend system can simultaneously handle a few billion auctions in real-time every day. It receives price bids for every ad impression via API from more than 20 different companies buying potential ad inventory.

Behind the auction scenes, we have an impressive prediction model working to figure out if an ad will lead to an app install or not. The algorithm requires operating data from different data sources and performs calculations in real-time. We’ve built the core of our algorithm around Apache Flink with 10+ jobs and Kafka to be able to handle these events.

Join our discussions, explore implementation, and put your problem-solving skills to the test in our cross-functional Programmatic team!

Our Tech Stack

Apache Flink as our streaming framework, written in Java
Apache Kafka as our streaming platform
Go as our primary language
Kubernetes and Terraform to manage our infrastructure
Scylla and Redis as data storage
Prometheus, Grafana, and Loki for logging and monitoring
GitLab (managing Git and the CI/CD pipelines that run there)
… and we’re always open to trying new technologies that suit each case best.

What You Will Do

Implement our real-time bidding algorithm by developing data streaming applications and backend applications for our programmatic advertising platform.
Master the data: you ensure that data can be easily used in all parts of the product, from offline model training over online predictions to reporting.
Be responsible for collecting billions of daily API events and aggregating them in our Kafka streams with the goal of querying them from the data lake in a matter of seconds.
Collaborate with our Data Science team to solve complex math problems used to optimize our ML algorithms that are dedicated to delivering the right ads to the right users and integrating their solutions into adjoe’s application.
Work in a community of developers with whom you’ll share knowledge and contribute to peer code reviews.
Be part of an international English-speaking team dedicated to scaling our adtech platform beyond our hundreds of millions of monthly active users.

Who You Are

You have 3+ years’ of data engineering or software development experience, preferably with Java or Go as your main programming language.
No experience with Go? No worries, you just have to be eager to learn it.
You have worked with Apache Flink in recent years, but you are also proficient in other technologies like Kafka or Spark.
You have hands-on experience with setting up and configuring software in Kubernetes production clusters.
You have good math knowledge and experience in data analysis.
You have advanced knowledge of computer science, algorithms, and data structures.
You have knowledge of databases and a basic understanding of regular expressions, HTTP protocol, and encoding.
Plus: You have experience in working with infrastructure as code (Terraform), Kubernetes, and serverless infrastructures.

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 a personal trainer, various classes like Yoga with expert teachers & free of charge access to our EAP (Employee Assistance Program) to support your mental health and well-being
Activity Package: Regular team and company eve

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