Java Backend Engineer

Posted 6 Days Ago
Be an Early Applicant
Kraków, Małopolskie, POL
In-Office
Junior
AdTech • Artificial Intelligence
The Role
The Java Backend Engineer will develop features, optimize performance for data pipelines, and build microservices while collaborating with experienced teams.
Summary Generated by Built In

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

Skills Required

  • 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
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: Los Angeles, CA
335 Employees
Year Founded: 2012

What We Do

LoopMe, the leading outcomes-based platform, closes the loop on digital advertising. By leveraging AI to optimise media delivery in real-time, we drive measurable uplift for business outcomes and more effective advertising across online and offline marketing goals, including brand lift, purchase intent, consideration, foot traffic and sales. LoopMe's core business helps brands and agencies achieve better advertising results powered by our AI-platform and flagship product PurchaseLoop. LoopMe's marketplace powers more effective supply and demand connections, rooted in programmatic delivery. LoopMe's robust data and analytics measurement suite, including its proprietary household and device graph, brings deep insights to various companies within the advertising industry including podcasting, out-of-home, connected TV, mobile and more. LoopMe was founded in 2012 with the mission to create better consumer experiences through innovation, powered by data, in order to bring people and brands together. The Company is headquartered in the UK, with 15 global offices across New York, Boston, Atlanta, Chicago, Detroit, San Francisco, Los Angeles, Toronto, Singapore, Sydney, Tokyo, Dnipro, Krakow and Hong Kong.

Similar Jobs

LoopMe Logo LoopMe

Back-end Engineer

AdTech • Artificial Intelligence
In-Office
3 Locations
335 Employees

Ubiquiti Inc. Logo Ubiquiti Inc.

Senior Java Engineer

Hardware • Information Technology • Internet of Things • Software
In-Office
Kraków, Małopolskie, POL
895 Employees

Ericsson Logo Ericsson

C++ / Golang Developer Summer Internship - Kraków

Cloud • Information Technology • Internet of Things • Machine Learning • Software • Cybersecurity • Infrastructure as a Service (IaaS)
In-Office
Kraków, Małopolskie, POL
88000 Employees

Ericsson Logo Ericsson

AI driven Summer Internship - Kraków

Cloud • Information Technology • Internet of Things • Machine Learning • Software • Cybersecurity • Infrastructure as a Service (IaaS)
In-Office
Kraków, Małopolskie, POL
88000 Employees

Similar Companies Hiring

Idler Thumbnail
Artificial Intelligence
San Francisco, California
6 Employees
Bellagent Thumbnail
Artificial Intelligence • Machine Learning • Business Intelligence • Generative AI
Chicago, IL
20 Employees
Onshore Thumbnail
Artificial Intelligence • Fintech • Software • Financial Services
New York, New York
60 Employees

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account