Last reviewed and updated: November 6, 2026 The United States offers career opportunities for qualified professionals in technology, healthcare, engineering, scientific research, and other specialized fields. International candidates may be able to work for American employers through employment-based immigration categories such as the H-1B, O-1, and L-1 visas. Some professionals may also qualify for employment-based permanent residence through categories such as EB-2 or EB-3. However, finding a well-paid position and obtaining permission to work in the United States are two separate processes. A company may have a suitable vacancy but may not support immigration applications. Similarly, an employer's willingness to sponsor a worker does not automatically mean that the worker qualifies for a particular visa. This guide explains technology and healthcare career options, how to interpret American salary information, which employment-based visa routes may apply, and how in...