QA Automation Tester (Data & API Testing)

September 4, 2026

Hybrid

Senior

Warszawa, PL

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English is requiredB2B contract

Description

Scalo delivers software projects and supports partners in business development. The QA Automation Tester will design and develop manual and automated tests for data warehouses, REST and SOAP APIs, and validate ETL/ELT processes.

Responsibilities

Participate in project building new solution generating BIK data feeds
Design and develop manual and automated tests for data warehouse solutions
Create data tests, integration tests and data pipelines
Develop automated regression tests and test REST and SOAP APIs
Verify data flow correctness between systems, integration layer and data warehouse
Validate ETL/ELT processes and perform data quality analysis
Write SQL queries for data validation
Analyze errors at application‑API‑data warehouse interface and collaborate with business analysts, developers and data teams

Requirements

Minimum 5 years experience in testing applications, data warehouses or data pipelines
Strong automation testing skills
Excellent knowledge of SQL
Experience testing REST API and/or SOAP services
Experience with data warehouses, ETL/ELT and large data volumes
Proficiency with Postman, SoapUI/ReadyAPI and database tools
Familiarity with Jira, Azure DevOps, TestRail or similar tools
Ability to analyze requirements and define test scope independently
Highly developed analytical abilities
Preferred experience in financial, banking or insurance sector

Conditions

Hybrid work model with one day per week on‑site in Warsaw
B2B contract with hourly rate up to 110 PLN/h + VAT
Medical care, sports card and cafeteria benefits
Opportunity to work on diverse projects across software, embedded, data and cloud services

SQLREST APISOAPPostmanJiraAzure DevOpsTestRail

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