Senior AQA Engineer (Python)

Position Overview: 

N-iX is a global software development company, empowering businesses worldwide with next-generation tech solutions. Since 2002, we have grown into a team of 2,400+ experts with offices in Kraków, Warsaw, and Wrocław, and an active Polish community. We deliver high-impact projects for Fortune 500 clients and industry leaders, offering flexible work formats (remote, office, or hybrid) and lots of growth opportunities. Join us to create technology that drives real change for businesses and people across the world.

We are looking for a Senior QA Engineer with strong hands-on automation experience and deep expertise in quality engineering practices. The ideal candidate will own the quality assurance execution for the platform, manage test processes end-to-end, and work closely with engineering and product teams to ensure high-quality, compliant, and reliable software delivery.

Our client is a global UK-based financial services and investment banking organization developing an AI-powered document processing and automation platform used across multiple business units. The platform handles large-scale data ingestion, classification, quality validation, and workflow orchestration, requiring strong testing discipline and robust automation practices.

Responsibilities:

• Develop and maintain comprehensive quality strategies, test plans, and test approaches to support continuous delivery.
• Lead and manage the full test lifecycle, including planning, estimations, governance, risk mitigation, and defect management.
• Design, build, and maintain automated test suites (smoke, regression, API, integration) using modern frameworks and tools.
• Execute automated tests, analyze results, troubleshoot failures, and provide meaningful quality metrics to stakeholders.
• Collaborate closely with developers, architects, product owners, and automation specialists in an Agile environment.
• Advocate for quality-first engineering practices, ensuring that quality is embedded into every stage of the SDLC.
• Ensure compliance with testing standards, internal policies, and regulatory requirements.
• Identify improvement opportunities in testing processes, tooling, and internal control frameworks.

Requirements:

• Extensive experience across all stages of the software development lifecycle, including system, integration, regression, and acceptance testing.
• 6+ years of hands-on test automation experience, particularly designing automation frameworks.
• Strong knowledge and practical experience with API test automation using tools such as RestAssured, SOAPUI, Postman, or similar.
• Experience implementing automated tests within CI/CD pipelines, including pipeline configuration and test integration.
• Strong understanding of Agile practices, including TDD, BDD, user story testing, and continuous integration workflows.
• Proficiency with SQL/PL/SQL for backend data validation and query-based testing.
• Ability to clearly articulate technical issues, test results, and quality risks to engineering teams and management stakeholders.
• Strong problem-solving skills with the ability to identify control weaknesses and propose improvements.
• Experience working in complex enterprise or regulated environments (financial services is a plus).

Nice to Have:

• Experience testing AI/ML systems, document processing pipelines, or data-heavy workflows.
• Knowledge of performance testing tools (JMeter, Gatling) or security testing practices.
• Experience with Google Cloud tooling or distributed microservices environments.
• Familiarity with test reporting frameworks, quality dashboards, or analytics tools.