Senior Go Backend Developer (f/m/d)

adjoe, the adtech company behind the Playtime Arcade rewarded-advertising product, is hiring a Senior Go Backend Developer for its Demand Core team in Hamburg. You build and operate the sub-millisecond decision engine that powers 200 million daily ad interactions, maintaining a 99%+ Go microservice architecture that evaluates 40+ targeting constraints and 30+ real-time signals to rank campaigns in milliseconds. You design high-throughput event-streaming pipelines with Kafka, SQS/SNS and Kinesis, optimise queries across DynamoDB, MySQL, Druid and Athena, and expose documented open APIs to enterprise partners. You also partner with the Data Science team to integrate machine-learning algorithms into real-time ad targeting.