Senior Backend Test Automation Engineer with Scala and Java

We are looking for the Senior Backend Test Automation Engineer with strong data platform experience :)

Industry: Technology solutions - consumer electronics, software, streaming
Client: global enterprise, Swedish entity
Work model: full time, hybrid 3 days/week on-site from Krakow (Equal Business Park) office
Project language: English
Onboarding: 3 days in Malmo, Sweden
Start: ASAP or 1 week notice ideally / at latest start 27th July 2026
Assignment type: B2B
Remuneration: up to 200 PLN/h net + VAT
FTE: full-time
• Strong experience testing backend microservices rather than web UIs.
• Hands-on experience with integration testing across distributed systems.
• Experience with Play Framework (or at least JVM-based backend services in Java/Scala).
• Good understanding of Apache Spark and testing data pipelines.
• Experience validating ETL/data processing workflows.
• Comfortable managing test data, data dependencies, and deterministic test environments.
• Experience with CI/CD and automated test execution.
• Ability to debug failures across multiple services, databases, queues, and pipelines.
Likely technical stack includes:
• Java and/or Scala
• Play Framework
• Apache Spark
• SQL
• Integration test frameworks (ScalaTest, JUnit, Testcontainers, etc.)
• Docker/Kubernetes
• GitHub Actions, Jenkins, Azure DevOps, or similar