How Much Do Mainframe Developers Make? 2025 Salary Guide

In the past, corporations generally relied on mainframes to handle their computing needs. These large, on-premises machines took up a lot of space and were expensive to build. With the emergence of the cloud, the mainframe has become less popular, but some companies still rely on them and put great value on mainframe developers. 

If you want to start a career in this area, you’re likely curious about the average mainframe developer salary. Read on to learn about the average salary, factors that could impact your pay, and more below. 

What is a mainframe developer?

A mainframe developer—sometimes called a COBOL developer—is a specialized career within the software developer career path. As a mainframe developer, you’ll maintain a computer system's mainframe, which are high-performance computers that handle many users in centralized databases. You’ll perform maintenance using programming languages so an organization’s mainframe can store and process a mass amount of data in a short time. You’ll also test code from other developers for bugs and collaborate with other IT professionals to develop new applications for the organization. 

How much do mainframe developers make? 

A mainframe developer is a specialized type of software developer. Based on several job posting sites, the average mainframe developer salary ranges from $73,744 to $101,376, [1, 2, 3].

Is mainframe developer a good career choice?

You can consider whether a mainframe developer is a good career option by comparing the average salary in this role to the average salary across all positions in the United States. The average salary for a mainframe developer ranges from $73,744 to $101,575 [3, 1], while the average salary across all occupations is $65,470 [4]. You can also consider the US Bureau of Labor Statistics’ projections for growth for mainframe developers over the next decade. As part of the software developer, quality assurance analyst, and testers category, mainframe developer roles will grow by 17 percent over the next decade [5]. Together, these numbers suggest that a career as a mainframe developer may be a good choice. 

Mainframe developer salary by education

To become a mainframe developer, you usually need at least a bachelor’s degree in software engineering, computer information systems, or a related field. According to Zippia, 76 percent of mainframe developers have a bachelor’s degree, 14 have a master’s, and 6.5 percent have an associate [6]. Here’s how education can impact the average COBOL developer salary [2]: 

• Associate degree: $84,352

• Bachelor’s degree: $93,369

• Master’s degree: $96,500

• Doctorate: $98,464

Salary by location

Location is another factor that impacts the average mainframe developer salary. Companies may have to compensate for varying living costs between areas and the local demand. If you live in a location with a high cost of living, you’ll require a higher salary than you would in a location with a lower cost of living to afford the same lifestyle.

Here are the average salaries for mainframe developers in various states, according to Zippia [2]:

Salaries according to experience

Like other roles, as you work for years as a mainframe developer, you may gain new skills and talents that make you more efficient at your job. At the same time, doing so can also help you grow your salary. Here’s how your level of experience impacts the average mainframe developer salary [1]:

• 0–1 years: $82,434

• 1–3 years: $87,602

• 4–6 years: $98,120

• 7–9 years: $108,981

• 10–14 years: $117,805

• 15 or more years: $128,631

Salary by industry

Some of the highest-paying industries still employing mainframe developers include [2]: 

• Insurance: $96,137

• Automotive: $92,193

• Finance: $91,751

• Transportation: $91,246

• Technology: $86,805

How to start a mainframe developer career

To become a mainframe developer, employers require at least a bachelor’s degree in topics like computer science, electrical engineering, and relevant subjects. After graduation, you’ll need about three to four years of experience in an entry-level software development role before transitioning to a more specialized field like mainframe development. Gaining experience allows you to learn about standard industry procedures and new techniques while honing your skills.

While working in a software developer role, you can earn certifications related to mainframe development. Some options include the IBM Certified Administrator - Db2 12 for z/OS and or the IBM Mainframe Developer Professional Certificate.

With experience and certifications, you'll be ready to start applying for mainframe developer roles. 

Mainframe developer skills

Mainframe developers require a broad range of technical and workplace skills. Technical skills represent the practical aspects of your role, while workplace skills contribute to how productive you are in a work environment. Refining the following skills can help you advance in your career: 

Technical skills: 

• COBOL

• Data analysis and integration

• DB2

• Digital security

• Troubleshooting

• Programming languages

  • Assembler

  • COBOL

  • PL/I

  • C

  • C++

  • Java

  • CLIST

  • REXX™

Workplace skills: 

• Attention to detail

• Business operations

• Capacity management

• Communication

• Multitasking

• Problem-solving

• Teamwork

• Desire to learn

Learn more about mainframe coding on Coursera

While mainframes aren’t as popular as they once were, many of the world’s largest corporations still use them and need mainframe developers. If you’re looking for a technical role and enjoy putting your talents toward ensuring computer systems are running at peak performance, a mainframe developer role may be for you. 

You can prepare by building in-demand skills and expanding your knowledge with the Microsoft Full-Stack Developer Professional Certificate or IBM’s Data Engineering Professional Certificate on Coursera. Upon completion, gain exclusive access to career resources like resume review, interview prep, and career support.