Senior QA Engineer

Creditstar Group is a rapidly growing international consumer finance company, headquartered in Tallinn, Estonia and operating in multiple European markets.

At the core, we are a financial technology company that uses automated processes, algorithms and data analysis to make financial instruments easily available to a population of more than 175 million people in our target markets. We are a team of ambitious professionals who value innovation, effective efficiency, high growth, and high performance. For more information on the group, please visit www.creditstar.com.

Our vision is to build and deliver digital banking products of the future. If you want to be part of this, here is your chance.

YOUR ROLE:

SENIOR QA SPECIALIST

The Senior QA Specialist is a key contributor to the quality assurance strategy and execution across product and development initiatives. This role is focused on establishing scalable, standards-driven QA processes, selecting fit-for-purpose tools, ensuring compliance with data-related policies, and mentoring stakeholders involved in quality reviews. The role offers a pathway to a team leadership position.

Requirements

• Demonstrated experience as a Senior Quality Assurance Tester or in a comparable position.
• Strong hands-on experience testing native mobile apps on iOS and Android.
• Expertise in mobile automation and framework design.
• Proven experience setting up QA processes, tools, or automation frameworks from scratch.
• Solid hands-on experience with load and performance testing tools (e.g., JMeter, Gatling, k6, or similar).
• Practical experience testing card payments, including end-to-end payment flows and error handling.
• Familiarity with Agile methodologies.
• Experience with mentoring junior specialists.
• Nice to have: Background in fintech, payments, or high-scale consumer applications.

YOUR KEY RESPONSIBILITIES:

• Evaluate, select, and introduce QA tools for mobile testing, automation, and reporting.
• Set up and maintain mobile automation frameworks and CI/CD integration.
• Design, execute, and maintain comprehensive test plans for iOS and Android applications.
• Perform manual and automated testing of mobile apps across multiple devices and OS versions.
• Execute and analyze load and performance tests for mobile backends and critical user flows.
• Supporting, advising and mentoring other stakeholders (PM, Growth leads, Ops leads) that are taking part of product reviews in QA processes.
• Make sure that all our developments stay compliant and aligned with our Data Quality and Data Security Policies.
• Mentor other junior QA Specialists with an option to become a Team lead in the future.