As an interviewer for Matrixport, I would focus on assessing the candidate's technical proficiency, problem-solving abilities, and adaptability to our fintech-oriented, fast-paced culture. Key areas to evaluate include their hands-on experience with various testing methodologies, familiarity with automation tools like Selenium or Postman, and ability to demonstrate bug tracking and process improvement in past roles. Candidates should showcase strong communication skills to emphasize effective teamwork, and I'd look for evidence of experience in security or performance testing, which are critical for our blockchain applications. Additionally, I'd gauge their comfort with Agile/Scrum practices to ensure they can thrive in iterative development cycles.