[Hiring] Senior QA Engineer @CITA LABS

Role Description

We are looking for an experienced QA Engineer to ensure the quality, reliability, security, and performance of our web, backend, and blockchain-related products.

• Design, develop, and execute comprehensive test plans and test cases.
• Perform functional, regression, integration, API, and end-to-end testing.
• Build and maintain automated test suites for web applications, APIs, and backend services.
• Validate new features against product and technical requirements.
• Test complex transaction workflows across multiple services and external integrations.
• Perform API testing for REST, GraphQL, WebSocket, and other service interfaces.
• Validate database records and system state during testing.
• Identify, document, prioritize, and track defects.
• Reproduce production issues and work with engineers to identify root causes.
• Design test scenarios covering edge cases, failure conditions, and abnormal user behavior.
• Perform cross-browser and responsive testing for web applications.
• Validate application behavior under network failures, timeouts, retries, and partial service failures.
• Participate in requirements reviews, technical discussions, and release planning.
• Establish regression-testing strategies for critical functionality.
• Integrate automated testing into CI/CD pipelines.
• Monitor production quality and contribute to incident investigations.
• Continuously improve QA processes, tooling, test coverage, and release quality.

Qualifications

• 3+ years of professional QA or Software Testing experience.
• Strong understanding of software testing methodologies and the software development lifecycle.
• Hands-on experience with both manual and automated testing.
• Strong experience with API testing.
• Experience testing web applications and backend services.
• Experience using API testing tools such as Postman or similar tools.
• Ability to write automation or testing code using JavaScript/TypeScript, Python, Java, or another programming language.
• Experience with SQL and database validation.
• Experience with Git and CI/CD environments.
• Strong analytical and troubleshooting skills.
• Ability to clearly document defects, reproduction steps, expected behavior, and actual behavior.

Requirements

• Experience with Playwright or Cypress.
• Strong API automation experience.
• Experience with TypeScript, Python, or Java.
• Experience with PostgreSQL/MySQL and Redis.
• Experience with Docker and Kubernetes.
• Experience testing microservice architectures.
• Experience with Kafka or other event-driven systems.
• Experience with WebSocket applications.
• Experience with performance/load testing.
• Experience testing mobile applications.
• Experience with AWS, GCP, or Azure.
• Experience working in FinTech, payments, cryptocurrency, trading, or Web3.