Full Stack QA Engineer

Andersen is hiring a Full Stack QA Engineer in Kazakhstan for a project developing a secure, scalable payment platform and ensuring reliable payment processing and integrations.

Our customer is a large international technology organization operating in the digital infrastructure domain. It develops and maintains high-load platforms that process and manage significant volumes of data across multiple regions. The engineering landscape includes distributed systems, cloud-based environments, system integrations, and advanced security practices, with a focus on reliability, scalability, and continuous platform evolution.

The project is focused on developing and integrating a modern payment platform that supports secure and reliable payment processing and interaction with external systems. It includes scalable microservices, asynchronous transaction processing, payment status and error handling, with a strong emphasis on resilience, security, and high availability.

Responsibilities:

• Performing functional testing of payment services.
• Testing REST APIs and system integrations.
• Verifying interactions between microservices and external systems.
• Testing Kafka-based messaging and asynchronous event processing.
• Validating different payment transaction states, including success, decline, cancel, refund, pending, error, and others.
• Verifying correct transitions between payment states.
• Using SQL to validate transaction processing results.
• Cross-checking API responses, Kafka events, and database records.
• Developing and maintaining automated API tests.
• Testing retry mechanisms, timeouts, duplicate requests, and error recovery scenarios.
• Analyzing logs and tracing requests across services.
• Performing regression testing.
• Developing test scenarios and preparing test data.
• Reporting, documenting, and tracking defects.
• Verifying bug fixes and assessing regression risks.
• Testing iOS and Android mobile applications.
• Analyzing automated test results and contributing to the maintenance of the regression test suite.

Must-haves:

• Commercial experience in functional and integration testing of backend systems for 3+ years.
• Hands-on experience with REST API testing.
• Experience in integration testing involving multiple interconnected systems.
• Hands-on experience testing synchronous and asynchronous integrations using Kafka.
• Understanding of event-driven architecture principles.
• Strong SQL skills and experience validating data in databases.
• Hands-on experience developing and maintaining automated tests for APIs and integrations; the specific programming language or framework is not essential.
• Experience testing retries, timeouts, duplicate requests/events, integration failures, and recovery scenarios.
• Understanding of HTTP, JSON, REST, and authentication/authorization mechanisms.
• Experience analyzing logs and identifying root causes of defects in distributed systems.
• Knowledge of test design techniques.
• Experience validating data consistency across APIs, Kafka, and databases.
• Level of English – from Intermediate and above.

Nice to haves:

• Experience working on banking, payment, or fintech projects.
• Understanding of the payment transaction lifecycle and payment system principles.
• Experience with test automation using Go, Python, Postman/Newman, REST Assured, or similar tools.
• Experience testing iOS and Android mobile applications.
• Understanding of Docker and Kubernetes.

Reasons why this job would be interesting to you:

• Experience in teamwork with leaders in FinTech, Healthcare, Retail, Telecom, and others. Andersen cooperates with such businesses as Samsung, Siemens, Johnson & Johnson, BNP Paribas, Ryanair, Mercedes, TUI, Verivox, Allianz, T-Systems, etc..
• The opportunity to change the project and/or develop expertise in an interesting business domain.
• Guarantee of professional, financial, and career growth! The company has introduced systems of mentoring and adaptation for each new employee.
• The opportunity to earn up to an additional 1,000 EUR per month, depending on the level of expertise, which will be included in the annual bonus, by participating in the company's activities.
• Access to the corporate training portal, where the entire knowledge base of the company is collected and which is constantly updated.
• Bright corporate life (parties / pizza days / PlayStation / fruits / coffee / snacks / movies).
• Certification compensation (AWS, PMP, etc).
• Referral program.
• Private health insurance and sports compensation, depending on the type of employment.

Join us!