Senior QA Automation Engineer (Java/Ruby on Rails)
Grid Dynamics • Krakow, Lesser Poland Voivodeship, Poland
Role & seniority: Senior QA Automation Engineer
Stack / tools: Java 17+; Ruby on Rails; REST API automation (Rest Assured or similar); backend/microservices testing; Kafka/RabbitMQ (or ActiveMQ); Docker; CI/CD pipelines; observability (Grafana/Kibana); mocking/virtualization (WireMock, Mockito, Pact); UI automation (Playwright/Selenium) and performance testing (JMeter/Gatling) as nice-to-haves; Cloud (AWS/Azure) and Kubernetes as nice-to-haves
Top 3 responsibilities
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Design, build, and maintain scalable automation frameworks from scratch (Java & RoR)
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Automate REST APIs and validate inter-service communication in a microservices backend
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Integrate automated tests into CI/CD; perform system/integration testing; monitor logs/metrics; troubleshoot
Must-have skills
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Strong Java 17+ and hands-on RoR experience
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API automation expertise (REST) with Rest Assured or equivalent
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Testing distributed systems, mocking (WireMock/Mockito/Pact), and asynchronous systems (Kafka/RabbitMQ/ActiveMQ)
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Docker, CI/CD experience; English at least B2
Nice-to-haves
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UI automation (Playwright/Selenium) and performance testing (JMeter/Gatling)
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Cloud (AWS/Azure) and Kubernetes familiarity
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Location & work type: Location not specified; flexible schedule; office may be available (Grid Dynamics offers various locations).
Full Description
Senior QA Automation Engineer (Java & RoR)
We are looking for a Senior QA Automation Engineer to join project in the financial sector. You will be responsible for building and maintaining high-quality automation frameworks for mission-critical, distributed backend systems.
Responsibilities
Framework Development: Designing, building, and maintaining scalable automation frameworks from scratch using Java and Ruby on Rails.
API & Backend Testing: Automating REST API tests and verifying complex inter-service communication within a microservices architecture.
System Quality: Performing integration and system-level testing to ensure the stability of critical financial platforms.
Pipeline Integration: Integrating automated test suites into CI/CD pipelines to support a continuous deployment culture.
Event-Driven Testing: Testing asynchronous workflows and data streams using Kafka/RabbitMQ.
Observability & Debugging: Monitoring system behavior and analyzing logs/metrics (Grafana/Kibana) to identify and troubleshoot issues.
Mentoring & Collaboration: Working closely with Developers and Stakeholders in an Agile environment to promote a "quality-first" mindset.
Requirements
Programming: Strong Java 17+ skills and hands-on experience in Ruby on Rails (RoR).
API Testing: Expertise in REST API automation using Rest Assured (or similar).
Backend & Microservices: Practical experience in testing distributed systems and mocking (WireMock, Mockito, or Pact).
Asynchronous Systems: Experience with Kafka, RabbitMQ, or ActiveMQ.
DevOps & Infrastructure: Hands-on work with Docker and CI/CD pipelines.
English: Minimum B2 level (daily communication).
Nice to have
UI Automation (Playwright, Selenium) and Performance testing (JMeter, Gatling). Familiarity with Cloud environments (AWS/Azure) and Kubernetes.
We offer
Opportunity to work on bleeding-edge projects Work with a highly motivated and dedicated team Competitive salary Flexible schedule Benefits package - medical insurance, sports Corporate social events Professional development opportunities Well-equipped office
About Us
Grid Dynamics (NASDAQ: GDYN) is a leading provider of technology consulting, platform and product engineering, AI, and advanced analytics services. Fusing technical vision with business acumen, we solve the most pressing technical challenges and enable positive business outcomes for enterprise companies undergoing business transformation. A key differentiator for Grid Dynamics is our 8 years of experience and leadership in enterprise AI, supported by profound expertise and ongoing investment in data, analytics, cloud & DevOps, application modernization and customer experience. Founded in 2006, Grid Dynamics is headquartered in Silicon Valley with offices across the Americas, Europe, and India. Show more Show less
