测试员：
测试人员是对软件执行测试过程以检测缺陷的人。测试人员还检查软件的不同方面。测试人员不知道软件的开发过程。测试人员检查软件是否有错误和缺陷。
标准差：
SDET 代表测试中的软件开发工程师。 SDET 是在开发和测试过程中发挥作用的人。 SDET 了解软件的内部设计和实现。可以编码的测试人员被称为 SDET。
测试仪和SDET的区别：
| Tester | SDET |
|---|---|
| It tests the software or system after the development. | Tester who knows coding is known as SDET. |
| Tester doesn’t know the design and implementation of the software.. | SDET knows designing, implementation and testing. |
| Only testing tasks are performed by the tester. | SDET also checks the performance of the software. |
| Tester has less knowledge about software requirements. | SDET has all knowledge about software requirements and other aspects. |
| Tester are person with less skills. | SDET are person with high skills. |
| Stipend of tester is less as compared to SDET. | Stipend is better for SDET as compared to tester. |
| Tester has less role and responsibilities in software development life cycle. | SDET has full role in all steps of software development life cycle. |
| Tester doesn’t know coding. | SDET knows coding quite well. |