Senior Test Developer

As a Senior Test Developer at TOKENINSIGHT SG, you lead testing efforts across functional, automation, integration, and performance domains for large-scale online platform systems. You design and maintain automated test cases, develop testing frameworks, and explore AI and LLM tools to enhance intelligent testing capabilities. You work closely with product managers, engineers, and stakeholders to ensure product quality and drive continuous improvement in QA processes.

What you'll do

• Participate in functional, automation, integration, and performance testing for large-scale online platform systems
• Design, develop, and maintain automated test cases for web applications, APIs, and real-time messaging systems such as Kafka and WebSocket
• Contribute to or lead the development of testing platforms, automation frameworks, and regression testing systems to improve testing efficiency and product quality
• Explore and apply AI and Large Language Model (LLM) tools to enhance intelligent testing capabilities, including automated test case generation, defect analysis, and reporting
• Work closely with product managers, software engineers, and stakeholders to understand business workflows, testing requirements, and test data strategies, and design key regression and end-to-end (E2E) test scenarios
• Support performance, stability, and scalability testing activities, and continuously improve quality metrics and testing standards
• Identify, track, and report software defects, and collaborate with development teams to ensure timely resolution
• Contribute to continuous improvement initiatives for QA processes, tools, and testing methodologies

What you bring

• A Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field
• At least 5 years of software testing experience, including a minimum of 2 years in test automation or test development
• Proficiency in at least one programming language such as Python or Java, with strong coding fundamentals and good software engineering practices
• Hands-on experience with common testing frameworks and performance testing tools such as Pytest, Playwright, Appium, JMeter, K6, or Locust
• A good understanding of HTTP, TCP/IP, and WebSocket protocols, as well as distributed system architectures and real-time application workflows
• Strong analytical, problem-solving, communication, and collaboration skills, with a strong sense of ownership toward software quality

Nice to have

• Experience building API automation frameworks, regression testing platforms, mock services, or test data management solutions
• Familiarity with AI-assisted development and testing tools such as GitHub Copilot, ChatGPT, or Cursor to improve testing efficiency and productivity
• Experience working on high-availability, real-time, or large-scale platform systems