Junior QA Engineer - Cloud, Data & API Testing (Hybrid)

State Street; Kraków; Hybrid; PLN 118,800 - 145,200; Full time

Benefits offered by this job

Permanent contract from day one

Birthday Day Off (additional holidays)

Gold Medical Package for employees and

Private pension plan

Technical training programs

Job summary

State Street is seeking a Junior QA Engineer to support testing of a cloud-native application built on AWS and Databricks. The role offers hybrid work, learning opportunities across data, APIs, and web apps, and close collaboration with developers and senior QA engineers.

You will validate functionality, data accuracy, performance, and reliability while contributing to test automation and CI/CD quality gates.

Qualifications

• B.S. degree in Computer Science, Engineering, Mathematics, and Physics or other technical course of study required. MS degree preferred.
• Min. 1-3 years of experience in QA and/or Software Testing.

Responsibilities

• Execute test cases for web and java applications, APIs, and data-driven features.
• Validate end-to-end workflows across UI, services, and data layers.
• Identify, document, and track defects clearly using Jira.
• Perform regression testing to ensure new changes do not impact existing functionality.
• Validate data ingestion, transformation, and output.
• Perform basic data quality checks (completeness, accuracy, consistency, timeliness).
• Use test automation/SQL to validate datasets, aggregates, and business rules.
• Execute API tests using tools such as Postman.
• Validate API responses, error handling, and data contracts.
• Assist with integration testing across AWS services and downstream consumers.
• Validate application behavior across AWS environments (dev, test, uat/staging).
• Assist in smoke testing after deployments and environment refreshes.
• Learn and follow cloud security and access best practices.
• Collaborate with developers and senior QA engineers during sprint planning and reviews.
• Contribute to test documentation, test case repositories, and QA checklists.
• Learn and assist with test automation and CI/CD quality gate

Skills

Collaboration across functions

Analytical skills

English proficiency

Communication skills

Education

B.S. degree in Computer Science, Engineering, Mathematics, and Physics or similar

Tools

Jira

Postman

SQL

Job description

State Street is seeking a Junior QA Engineer to support testing of a cloud-native application built on AWS and Databricks. The role offers hybrid work, learning opportunities across data, APIs, and web apps, and close collaboration with developers and senior QA engineers.

You will validate functionality, data accuracy, performance, and reliability while contributing to test automation and CI/CD quality gates.