Are you passionate about solving large-scale backend problems with machine learning solutions? Do you have deep expertise in Java backend development and want to help build a platform for decision automation? We are looking for a Senior Backend Engineer to build King’s next-generation machine learning platform and drive innovation in experimentation using machine learning.

Your role within our Kingdom

As a member of the ML Operations team within the Live Operations department, you will collaborate closely with our game teams. Your responsibilities will include developing the platform and integrating our decision automation platform into our games such as Candy Crush Saga. We are looking for an expert in Java development that has been working with “King” scale solutions and a great plus is knowledge in machine learning and multi-armed-bandits.

As a Senior Backend engineer at King, you will be using the latest technologies to build ML products that empower game design workflows across the company. With over 250+ million monthly active users and 50 billion events being uploaded daily, it’s key that you care about performance and understand what works and not. It is a highly ambitious and technical environment.

Skills to create thrills

So, what about you? You are part of a MLOps team working in different constellations to evolve our Decision Automation Platform.

Strong Java experience, databases and web development in general
Strong software Engineering skills
GCP data products (Kubernetes, VertexAI, BigQuery, Cloud Storage, Dataflow, Dataproc, to name a few) or products from other cloud providers
End-to-end integration of systems
Have been working with large scale backend systems (100M DAU)
Java + native bindings
Experience in Tensorflow or PyTorch
Strong development experience in Python based systems
Open and not afraid to help out where it is needed
Strong knowledge of web protocols, application servers and web servers
Strong Computer Science fundamentals, design patterns and object-oriented knowledge
Design, architect, test, document and implement features in our core services
Deliver high-quality and well-structured code
Git, gradle, maven, CI/CD, Jenkins, Cloud build knowledge is a must

Tasty bonus skills

Have any sweet experiences with one or some of the following areas? Then we sure like to hear about them!

Very strong interest in machine learning technologies
C++ knowledge
Knowledge in Multi-armed bandits, global and contextual bandits.
Building data pipelines and ML pipelines
Knowledge of recommender systems
ML modelling and monitoring
Contributions to open source projects

About King

With a mission of Making the World Playful, King is a leading interactive entertainment company with more than 20 years of history of delivering some of the world’s most iconic games in the mobile gaming industry, including the world-famous Candy Crush franchise, as well as other mobile game hits such as Farm Heroes Saga. King games are played by more than 200 million monthly active users. King, part of Microsoft (NASDAQ: MSFT), has Kingsters in Stockholm, Malmö, London, Barcelona, Berlin, Dublin, San Francisco, New York, Los Angeles and Malta. More information can be found at King.com or by following us on LinkedIn, @lifeatking on Instagram, or @king_games on X.