App Developer

Computer programmers write and test code that allows computer applications and software programs to function properly. They turn the program designs created by software developers and engineers into instructions that a computer can follow. In addition, programmers test newly created applications and programs to ensure that they produce the expected results. If they do not work correctly, computer programmers check the code for mistakes and fix them.

Duties

Computer programmers typically do the following:

• Write programs in a variety of computer languages, such as C++ and Java
• Update and expand existing programs
• Test programs for errors and fix the faulty lines of computer code
• Create and test code in an integrated development environment (IDE)
• Use code libraries, which are collections of independent lines of code, to simplify the writing

Programmers work closely with software developers, and in some businesses their duties overlap. When such overlap occurs, programmers can do work that is typical of developers, such as designing programs. Program design entails planning the software initially, creating models and flowcharts detailing how the code is to be written, writing and debugging code, and designing an application or systems interface.

A program’s purpose determines the complexity of its computer code. For example, a weather application for a mobile device will require less programming than a social-networking application. Simpler programs can be written in less time. Complex programs, such as computer operating systems, can take a year or more to complete.

Software-as-a-service (SaaS), which consists of applications provided through the Internet, is a growing field. Although programmers typically need to rewrite their programs to work on different system platforms, such as Windows or OS X, applications created with SaaS work on all platforms. Accordingly, programmers writing SaaS applications may not have to rewrite as much code as other programmers do and can instead spend more time writing new programs.

Most computer programmers have a bachelor’s degree in computer science or a related subject; however, some employers hire workers with an associate’s degree. Most programmers specialize in a few programming languages.

Education

Most computer programmers have a bachelor’s degree; however, some employers hire workers who have other degrees or experience in specific programming languages. Most programmers get a degree in computer science or a related subject. Programmers who work in specific fields, such as healthcare or accounting, may take classes in that field to supplement their degree in computer programming. In addition, employers value experience, which many students gain through internships.

Most programmers learn a few computer languages while in school. However, a computer science degree gives students the skills needed to learn new computer languages easily. Students get hands-on experience writing code, testing programs, fixing errors, and doing many other tasks that they will perform on the job.

To keep up with changing technology, computer programmers may take continuing education classes and attend professional development seminars to learn new programming languages or about upgrades to programming languages they already know.

Licenses, Certifications, and Registrations

Programmers can become certified in specific programming languages or for vendor-specific programming products. Some companies require their computer programmers to be certified in the products they use.

Advancement

Programmers who have general business experience may become computer systems analysts. With experience, some programmers may become software developers. They may also be promoted to managerial positions. For more information, see the profiles on computer systems analysts, software developers, and computer and information systems managers.

Important Qualities

Analytical skills. Computer programmers must understand complex instructions in order to create computer code.

Concentration. Programmers must focus their attention on their work as they write code or check existing code for errors.

Detail oriented. Computer programmers must closely examine the code they write because a small mistake can affect the entire computer program.

Troubleshooting skills. An important part of a programmer’s job is to check the code for errors and fix any they find.

The median annual wage for computer programmers was $89,190 in May 2020. The median wage is the wage at which half the workers in an occupation earned more than that amount and half earned less. The lowest 10 percent earned less than $51,440, and the highest 10 percent earned more than $146,050.

In May 2020, the median annual wages for computer programmers in the top industries in which they worked were as follows:

Most computer programmers work full time.