QA (Quality Assurance) engineers are responsible for ensuring the quality of software products

To become a QA engineer, there are several skills and knowledge that one should have, including:

1. Strong understanding of software development life cycle (SDLC) and software testing methodologies
2. Knowledge of programming languages such as Java, Python, or C#
3. Familiarity with automation testing tools such as Selenium or Appium
4. Good analytical and problem-solving skills to identify and report software bugs and defects
5. Excellent communication skills to work with developers, project managers, and other team members
6. Attention to detail and ability to work under tight deadlines
7. Ability to write test plans, test cases, and test scripts
8. Knowledge of database systems and SQL
9. Familiarity with agile software development methodologies such as Scrum or Kanban
10. Continuous learning and willingness to adapt to new technologies and tools.

These skills are essential for a QA engineer to ensure that the software product is of high quality and meets the expectations of the end-users.