Programmers are individuals who write and maintain the code that enables software applications to function. They use various programming languages, such as Python, Java, and C++, to create algorithms and solve problems. Their work is essential in developing everything from mobile apps to complex systems used in industries like finance and healthcare. In addition to coding, programmers often collaborate with other professionals, such as software engineers and project managers, to ensure that projects meet user requirements and are delivered on time. Their skills are in high demand, making programming a lucrative and rewarding career choice.