Senior Backend QA Engineer

Summary

Join Crypto.com's team to design, develop, maintain, and improve software for various ventures projects. You will be actively involved in designing scalable applications, from frontend UI to backend infrastructure. Responsibilities include code and test design review, test execution and metrics, performance and security testing, and maintaining quality frameworks. You will collaborate with backend feature teams and act as a technical bridge between QA and engineering. Crypto.com offers a supportive and flexible work environment with opportunities for growth and development. Competitive salary, attractive annual leave, flexible work hours, hybrid/remote setup, and a Crypto.com Visa card are among the benefits.

Requirements

• Strong proficiency in reading and understanding Ruby on Rails and Golang codebases; hands-on implementation experience is a plus
• Solid understanding of backend architecture patterns, microservices, and distributed systems testing challenges
• Familiarity with common technologies, including PostgreSQL, Kafka, RabbitMQ, Redis, etc
• Proven ability to translate functional requirements and use cases into working test plans and test cases for backend systems
• Strong customer focus, excellent problem solving and analytical skills
• Familiarity with performance testing tools and methodologies, with the ability to design and analyze load and stress tests
• Strong verbal and written communication skills with ability to work across technical teams
• Passion for improving code quality through interaction with the development team
• Proven expertise in RESTful and WebSocket API automation testing, leveraging frameworks such as Pytest, Pytest-bdd, and tools like Postman or equivalent
• Proficiency with Postman or similar API testing tools for backend service validation
• Proficiency in both English and Mandarin (written and spoken) is required, Cantonese proficiency is a plus

Responsibilities

• Code & Test Design Review
• Collaborate with backend feature teams to design comprehensive testing strategies prior to implementation, ensuring critical business flows are well covered and promoting a test-first development mindset
• Review automated test scenarios for backend services and APIs, with a strong focus on validating business logic
• Review backend codebase for testability and completeness of scenario coverage, providing actionable feedback to improve quality practices and maintain consistent standards across teams
• Test Execution & Metrics
• Oversee execution and management of test cases for backend services, monitor and analyze test results, and report on test and defect metrics to drive continuous quality improvements
• Performance & Security Testing
• Lead the design and execution of performance testing strategies, ensuring backend services scale reliably under high load and production-like conditions
• Contribute to security testing initiatives, including API vulnerability assessment and data protection validation, as a complementary responsibility to strengthen overall system reliability
• Quality Framework & Collaboration
• Develop, maintain, and continuously improve the test frameworks, tools, and technologies used across the organization to uphold a consistently high quality standard
• Act as the technical bridge between QA and backend engineering teams, translating testing requirements across different technology stacks, ensuring consistent quality practices, and driving a culture of quality excellence organization-wide

Benefits

• Competitive salary
• Attractive annual leave entitlement including: birthday, work anniversary
• Work Flexibility Adoption. Flexi-work hour and hybrid or remote set-up
• Aspire career alternatives through us. Our internal mobility program can offer employees a diverse scope
• Work Perks: crypto.com visa card provided upon joining