LoopMe

Java Backend Engineer

LoopMe  •  Kraków, PL (Hybrid)  •  5 days ago
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Job Description


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
LoopMe

About LoopMe

LoopMe is the global leader in brand performance, redefining brand advertising for the digital and app ecosystem. LoopMe was the first to apply AI to brand advertising and its Intelligent Marketplace, finding solutions to industry challenges that haven’t previously been solved. With consumer insights and AI at its core, LoopMe makes brand advertising better, outperforming industry benchmarks for leading global brands. LoopMe’s acquisition of Chartboost underscores its commitment to expand its capabilities and reinforces its position as the leading AI-powered brand advertising and performance platform. LoopMe has achieved a fully organic gross revenue CAGR of 40% for the period 2018-2024.

Industry
Marketing & Advertising
Company Size
201-500 employees
Headquarters
London, GB
Year Founded
Unknown
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