Software Test Engineering is responsible for formulating test plans and test specifications based on product requirements and product development project schedules. This includes building test environments and test software, executing tests, recording, analyzing, and reporting test results, proposing and implementing efficiency measures for efficient testing, setting and achieving test goals, and identifying defects during the development phase. The role also involves planning for improvements in the use of test tools and developing highly reusable test tools. Communication with the software development team and interaction with customers on all testing plans/issues is essential.