Senior Software Development Engineer in Test

About the Team:

The centralized Testing team for Tik Tok provides support for multiple service component value chains. In this role, team members have the opportunity to validate, automate, develop and manage the complex challenges of scale with your expertise in large-scale systems. The main responsibilities include maintaining automation test, handling user feedback, functional validation, building the App and release management.

As an SDET on our team, you will:

• Be responsible for the entire system testing process, including but not limited to: analysis, designing and executing test plans and cases, and conducting defect tracking;
• Work on project management, risk management, and process management tasks;
• Help implement test tools and collaborate with automation/performance test teams to build up internal tools/frameworks/platforms to make the team more productive.

Requirements:

Minimum Qualifications:

• BS/MS degree in a relevant field: Computer Engineering or EE
• Experience developing AI/LLM based solutions to enhance test effectiveness and efficiency
• Familiar with Java, Python, Objective-C, and Golang, with experience in related project development
• Proficient in test automation and test tool development for mobile, web, and APIs
• At least 5 years of experience with API testing
• Experience with SDK and mobile client testing, including automation testing, SDK integration validation across devices and OS versions.

Preferred Qualifications:

• Demonstrated ongoing AI skill development (e.g., prompt/context engineering, agent orchestration) and staying current with emerging AI technologies
• Experience evaluating and testing AI Agent/LLM model behavior, and driving model-quality regressions
• Familiar with web architecture, understanding of Django/Flask and other frameworks
• Familiar with Redis, NSQ, Zero-MQ, Kafka, Docker, K8s, Hive, Spark
• Strong passion for mobile internet and building next-generation mobile applications, with proven ownership of end-to-end services
• Excellent problem-solving skills, ability to coordinate with global teams