Senior QA Automation Engineer (Java/Ruby on Rails)

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.Essential functions: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.Qualifications: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).Would be a plus: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 projectsWork with a highly motivated and dedicated teamCompetitive salaryFlexible scheduleBenefits package - medical insurance, sportsCorporate social eventsProfessional development opportunitiesWell-equipped officeAbout 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.