A beta tester is someone who tests a product before it is released. Product testers help companies identify weak points in their products which could cause consumer frustration, and they also identify specific issues which need to be corrected before a product can be released. Typically, beta testers test several incarnations of a product, until it is deemed ready for release. Most commonly, beta testers work with electronics and software.

Working as a beta tester may sound like fun, since beta testers get access to cutting edge products before they are released to the public, but it is also hard work. Beta testers must work with something for hours, repeatedly performing the same actions and doing things like actively trying to break it. The work can actually be quite monotonous and rather boring, because beta testers are expected to exceed normal usage when they work with products, to ensure that they will hold up under abuse.

Some beta testers work for companies which specialize in beta testing services. They may be sent products for home review, or they may work in a lab environment so that their work can be easily charted and monitored. Because beta testers work with products which have not been released yet, they usually have to sign confidentiality waivers to protect the company's product for competitors. Someone who works as a beta tester may not be able to tell people about the projects he or she is working on as a result.

In other cases, beta testers are employed by specific companies which like to test their products in-house. The same confidentiality restrictions typically apply.

Depending on the stage that the product development process is in, a beta tester may be given a product and told to perform specific tasks, or the beta tester might just explore the product, noting things down as he or she goes. Beta testers think about the features that they might want or need, and if the features are hard to access, not intuitive, or nonexistent, they typically make a note of it. They also take note of flaws in the product, like instabilities in software which cause it to hang, terminate itself, or behave in other unexpected ways.

It can be expensive to send products through beta testing, but some companies feel that the cost is worth it, since it ensures that consumers will not have problems. Since everyone uses things in slightly different ways, companies want to know about strange bugs in their software caused by abnormal usage before the product is released to save themselves from customer complaints and the necessity of creating patches. In the case of electronics, companies want durable products which will stand the test of hard use; beta testers will do things like smash all the buttons at once, toss the product around, and try to push the product beyond its expected capacity, imitating potential consumer activities.