Senior QA Automation Engineer: API, Microservices & Kafka

Seargin; Poland; Remote; PLN 120,000 - 180,000; Full time

Benefits offered by this job

B2B Contract

MultiSport

Private Medical Care

Job summary

Seargin is seeking a QA Automation Engineer to design, develop, and maintain automated test frameworks for complex distributed systems. The role emphasizes API, integration, and end-to-end testing beyond UI, with experience in microservices and event-driven architectures.

The ideal candidate will validate data using SQL/NoSQL, work with Docker and Kubernetes, and collaborate in an Agile environment to improve overall quality. Knowledge of .NET/C# and testing tools is beneficial.

Qualifications

• Several years of QA / Software Testing experience with strong hands-on test automation expertise.
• Proven experience building and maintaining automated testing frameworks.
• Strong experience with API, integration and end-to-end testing.
• Practical experience testing microservices and distributed systems.
• Experience testing event-driven and asynchronous communication, preferably with Kafka or similar technologies.
• Good knowledge of SQL and databases with experience validating data during testing.
• Programming or scripting experience, preferably C#/.NET, and experience with Docker and/or Kubernetes.
• Strong analytical and problem-solving skills, including root cause analysis, production issue investigation and Agile team collaboration

Responsibilities

• Design, develop and maintain automated test frameworks and test suites
• API & Integration Testing: Perform API, integration and end-to-end testing across backend systems without relying only on the UI
• Microservices Testing: Test applications based on microservices and distributed architectures
• Event-Driven Testing: Test event-driven and asynchronous workflows using Kafka or similar messaging technologies
• System Communication: Validate REST APIs, events, webhooks and other system-to-system communication
• Data Validation: Use SQL and NoSQL databases to validate data and system behaviour
• Investigate defects and production issues, perform root cause analysis and work with developers on resolution
• Quality Improvement: Work with Docker and Kubernetes while contributing to test strategy, documentation and continuous quality improvement

Skills

QA Automation

Test Frameworks

API & Integration

Distributed Systems

Event-driven Testing

Database Testing

Programming & Containers

Analysis & Collaboration

Tools

Docker

Kubernetes

Playwright

Selenium

MongoDB

Job description

Seargin is seeking a QA Automation Engineer to design, develop, and maintain automated test frameworks for complex distributed systems. The role emphasizes API, integration, and end-to-end testing beyond UI, with experience in microservices and event-driven architectures.

The ideal candidate will validate data using SQL/NoSQL, work with Docker and Kubernetes, and collaborate in an Agile environment to improve overall quality. Knowledge of .NET/C# and testing tools is beneficial.