Mid Java Developer (GCP)

TL;DR

Mid Java Developer (GCP/Spark): Development and expansion of advanced analytical and operational data ecosystem for e-commerce campaign performance and investment decision-making tools with an accent on large-scale data processing, attribution models, and scalable pipelines. Focus on designing reporting engines, productionizing data models, and ensuring high-throughput reliability under massive scale.

Location: Remote (with visits to Warsaw once a month and willingness to participate in on-call duties)

Salary: 600-960 PLN/md on B2B

Company

Market-leading Polish e-commerce platform with over 20 million users and 1,000+ IT team, partnered with hirify.global since 2021 for microservices-based development.

What you will do

• Design and develop reporting engines and attribution systems for insights and performance.
• Build and maintain high-throughput data pipelines using Spark, Airflow, and Kafka.
• Collaborate with Data Science teams to productionize advanced data models.
• Ensure scalability, reliability, and performance of large-scale data systems.
• Develop internal tools for bulk management, agency panels, and RBAC systems.
• Support complex account structures and permissions management.
• Participate in on-call duties.

Requirements

• At least 3 years of commercial experience with Java / Kotlin / Scala
• Solid understanding of data processing and analytics systems
• Experience with distributed data pipelines and orchestration tools
• Knowledge of GCP cloud environment
• Experience 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

Culture & Benefits

• Work on high-impact data ecosystem with modern tech stack (GCP, Spark, Airflow, Kafka, microservices).
• Exposure to large-scale data processing, advanced analytics, and production-grade models.
• Autonomous teams developing cutting-edge technologies for millions of users.
• Proprietary professional development program and wide range of benefits.
• Charitable and educational initiatives supporting IT careers and community.