Mid Java Developer

Our Client dominates the Polish e-commerce arena as the market leader since 1999 with a user base of over 20 million. The client has a talented IT team of over 1,000 employees focusing on developing their own cutting-edge technologies. Jit Team has partnered with this client since spring 2021, providing multiple autonomous software development teams designing platform components through micro-services. The project involves developing and expanding an advanced analytical and operational ecosystem delivering precise campaign performance data and building tools supporting large-scale investment decision-making.

• At least 3 years of commercial experience with Java, Kotlin, or Scala
• Solid understanding of data processing and analytics systems
• Experience with distributed data pipelines and orchestration tools
• Knowledge of GCP cloud environment
• Experience working with large-scale data systems (e.g., BigQuery, Spark)
• Familiarity with microservices architecture and event-driven systems
• Understanding of data modeling and data productionization

Nice to have:

• Knowledge of Apache ecosystem, Avro, Terraform

• Designing and developing reporting engines and attribution systems (Insights & Performance)
• Building and maintaining high-throughput data pipelines
• Collaborating with Data Science teams to productionize advanced data models
• Ensuring scalability, reliability, and performance of data systems
• Developing internal tools (bulk management, agency panels, RBAC systems)
• Supporting complex account structures and permissions management
• Willingness to participate in on-call duties