Software Tester

Essential Duties & Responsibilities:

• Evaluate model output quality across diverse scenarios and edge cases.
  
• End-to-end AI execution and validation of new AI features, ensuring functional accuracy, reliability, and alignment with product requirements before release.
  
• Design, run, and evaluate prompt-based test scenarios to ensure consistent and high-quality language model outputs.
  
• Report performance / usability bugs and inconsistencies in AI-driven features with user impact assessments.
  
• Exceptional problem-solving abilities and debugging and log analysis skills.
  
• Automate prompt validation where possible, using tools generated internally.
  
• Support continuous improvement of UX and AI feature integration through data-driven QA practices like benchmarking.
  
• Ensure successful execution of multiple projects simultaneously.
  
• Communicate with internal/external teams in professional manner to build and maintain excellent rapport.
  
• Works on problems of limited scope. Follows standard practices and procedures.
  
• Conduct usability testing across platforms to identify friction points and accessibility issues.
  
• Strong problem solving and analytical skills, communication (verbal and written) skills, and organizational and documentation skills
  
• Goal oriented, possess a sense of urgency and capable to work under pressure and also work independently with limited supervision
  

Qualification (Background and Experience):

• BS in Computer Science/Engineering/Data science or related field required
  
• 1–3 years software QA experience required.
  
• Proven experience with QA test plans, manual/automated test execution, and defect management.
  
• In-depth knowledge of product quality management and QA lifecycles (SDLC).
  
• Familiarity with AI systems, LLMs, and prompt engineering tools is desirable.
  
• Experience in the Mobile/Telecom industry is desirable.
  
• English and Korean (business proficiency in speaking/reading/writing) preferred.
• Strong communication, multi-tasking, and organizational skills.
• Self-motivated and proactive; able to engage with multiple teams across multiple locations.
• Sense of ownership with a drive to complete projects end-to-end.
• Passion for continuous learning and staying current with evolving technologies.
• Understanding of how technology influences culture and society in the US.