Middle Java Developer

We are seeking a Middle Java Backend Engineer to contribute to our high-load ad serving system, capable of handling over 1M requests/second with a response time under 50ms. You'll work on PurchaseLoop Brand, LoopMe's award-winning survey-based optimization/attribution product, using technologies like ClickHouse, Elastic Search, Cassandra, Aerospike, Kubernetes, Kafka, and Google Cloud.

Key Responsibilities:

• Develop features and optimize performance for our application
• Implement complex targeting algorithms from our data science team into the core ad serving flow
• Scale systems to handle terabytes of data while maintaining millisecond-level response times
• Collaborate with LoopMe's Data Science team in an innovative adtech environment

Required Skills:

• 2+ years of experience with Java
• 2+ years of experience working in development teams with daily commits
• Experience with PostgreSQL, MySQL, or Oracle

Desired Skills:

• Experience with Kafka
• Knowledge of statistics
• Experience with Clickhouse
• Experience with NoSQL databases like Cassandra
• Experience with gRPC

We're looking for someone with excellent communication skills, high initiative, an inquiring mind, and a disciplined scientific approach. You should be able to deliver high-quality work consistently and have a good sense of humor.

Benefits:

• Competitive compensation package
• Global impact with hundreds of millions of users
• Transparent work environment
• Friendly team environment encouraging learning and skill acquisition
• Opportunity to join a stable, high-growth company

About the Data Science Team:

• 20 data scientists and Java developers
• Distributed team with offices in London, Poland, and Ukraine
• Open to new ideas and focused on continuous improvement
• Inclusive and welcoming environment
• Led by an experienced Chief Data Scientist

LoopMe is a global company with offices in major cities worldwide, founded in 2012 by experienced mobile advertising executives. We offer a hybrid work environment and do not discriminate based on any protected characteristics.