Java Backend Engineer

We’re looking for a Java Backend Engineer to join LoopMe — a global AI-powered ad tech company redefining how brands connect with consumers across the open internet.

In this role, you’ll help build and scale our Data Management Platform (DMP) — a massively distributed, high-throughput system processing billions of events daily, creating rich device and audience profiles, and exporting data segments to 50+ global partners and exchanges in real time.

You’ll work on complex backend challenges around performance, scalability, data pipelines, and real-time processing, helping power the infrastructure behind large-scale advertising auctions and audience targeting.

This is an opportunity to work on truly high-load systems, collaborate with experienced engineers, and have direct impact on a product used by some of the biggest players in the ad tech ecosystem.

What you'll be doing:

• Developing features and optimizing performance for large-scale data pipelines (Spark jobs, HBase, Kafka)

• Designing and optimizing data schemas for relational and NoSQL databases

• Building microservice applications

Core qualifications:

• 2+ years of engineering experience

• Proficiency in Java with a strong understanding of concurrency and distributed systems

• Experience with Spring Framework or similar IoC frameworks

• Experience with JPA or other ORM frameworks

• Strong knowledge of SQL and experience with modern RDBMS (PostgreSQL)

• Self-motivated, reliable, and comfortable working across a large multi-module codebase

Additional experience we’d value:

• Experience with Apache Spark or other large-scale data processing frameworks

• Experience with HBase or other NoSQL/columnar stores

• Experience with Kubernetes

• Experience with Kafka

• Experience with AI/LLM integrations in backend services

Benefits

• Flexible working schedule with a hybrid type of work

• Annual performance bonus

• One month of workation (you can work from any part of the world for one month)

• Multikafeteria