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Mainframe Developer III Salary in the United States

How much does a Mainframe Developer III make in the United States?

As of October 01, 2026, the average salary for a Mainframe Developer III in the United States is $102,940 per year, which breaks down to an hourly rate of $49.

However, a Mainframe Developer III's salary can vary significantly. Here’s a look at the typical salary range:

  • Top Earners (90th percentile): $119,121
  • Majority Range (25th-75th percentile): $94,970 to $111,410
  • Entry-Level (10th percentile): $87,714
Salary Factors Salary-Boosting Skills Salary by Experience Related Job Salaries Top Paying Cities Explore Related Jobs

Key Factors That Influence Mainframe Developer III Salaries

A Mainframe Developer III's salary isn't a fixed number. It's shaped by several important factors. Below, we'll explore how your years of experience, geographic location, education and company size can directly affect your earning potential.

How Experience Level Affects Mainframe Developer Salaries?

Experience is a primary driver of a Mainframe Developer III's salary. As you build your skills and take on more complex tasks, your compensation generally increases. Here's how the average salary grows at different career stages:

  • Entry-Level (less than 1 year): $99,371
  • Early Career (1-2 years): $99,966
  • Mid-Level (2-4 years): $101,156
  • Senior-Level (5-8 years): $105,468
  • Expert (over 8 years): $107,744
Levels Salary
Entry Level Mainframe Developer III$99,371
Intermediate Level Mainframe Developer III$99,966
Senior Level Mainframe Developer III$101,156
Specialist Level Mainframe Developer III$105,468
Expert Level Mainframe Developer III$107,744
View as Graph

How Do Mainframe Developer III Salaries Vary from State to State?

Your salary can change significantly depending on where you work. States with a higher cost of living and strong industrial sectors often pay more to attract Mainframe Developer IIIs. For example, consider the average annual salaries in these key locations:
  • District of Columbia: $113,970.
  • California: $113,540.
  • Massachusetts: $112,030.

Top Paying Cities for Mainframe Developer IIIs

Salaries can also vary between different cities. Major metropolitan areas or cities with a high demand for technicians often offer more competitive pay. Here are a few examples of average annual salaries in different U.S. cities:

  • San Jose: $129,840
  • San Francisco: $128,420
  • Oakland: $125,710

What Skills Can Increase a Mainframe Developer III's Salary?

Demanded Skills for the Role:

  • Analysis (Mentioned in 5.65% Job Postings): Analysis is the process of considering something carefully or using statistical methods in order to understand it or explain it.
  • Computer Science (Mentioned in 2.63% Job Postings): Computer science is the study of computation, automation, and information. Computer science spans theoretical disciplines (such as algorithms, theory of computation, information theory, and automation) to practical disciplines.
  • Job Scheduling (Mentioned in 1.08% Job Postings): Job scheduling is the process where different tasks get executed at pre-determined time or when the right event happens.
Skills Demand Percentage
Analysis 5.65%
Computer Science 2.63%
Job Scheduling 1.08%
See More Skills

What skills can make your compensation higher?

Mastering certain specialized skills can lead to a significant increase in pay. Here are examples of skills and the potential impact they can have on a Mainframe Developer III's salary.

  • Risk Management: Can increase your salary by up to 9%.
  • System Design: Can increase your salary by up to 7%.
  • Operating System: Can increase your salary by up to 6%.
Skill Salary Salary % Increase
Risk Management $112,205
9%
System Design $110,146
7%
Operating System $109,116
6%
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Mainframe Developer III Salary by Company Size: Startups vs. Enterprise

Mainframe Developer III salary potential scales significantly with company size. Data shows that Enterprise companies (5,000+ employees) pay the highest average salary at around $114,922. While startup companies pay approximate $97,310.

Mainframe Developer III Salary by Company Size

Company Size Employees Average Salary
Startup 1~50 $97,310
Growth Stage 51~500 $102,893
Established 501~5000 $110,966
Enterprise 5000+ $114,922

Mainframe Developer III Salary by Industry: Top Paying Sectors

For Mainframe Developer III roles, the industry you choose can affect earning potential by as much as 50% (the gap between the highest and lowest paying industries). Data shows that the Financial Services and Internet sectors offer the strongest compensation, at 25% above the average. In contrast, Mainframe Developer positions in Transportation or Edu., Gov't. & Nonprofit typically offer lower base pay, as these industries often view Mainframe Developer III as a support function rather than a direct revenue driver.

The top paying industries for a Mainframe Developer III

Industry Sector Average Annual Salary Average Hourly Rate Pay vs.Avg
Financial Services$128,675$62.025%
Internet$123,528$59.020%
Biotechnology$118,381$57.015%
Insurance$118,381$57.015%
Energy & Utilities$113,234$54.010%

How Education impacts a Mainframe Developer III's Salary?

Your level of education can impact your salary potential. While many Mainframe Developer IIIs enter the field with a High School Diploma or Technical Certificate degree, higher education can lead to more specialized and higher-paying roles.

According to our 100% employer-reported salary data, the median salary for a Mainframe Developer III with a High School Diploma or Technical Certificate is between $95,664 and $101,623).

Mainframe Developer III Salaries by Degree Level

Typical Education for Mainframe Developer III
Degree Level % of user with this level of education
No Diploma 9.1%
High School 9.1%
Associates 16.4%
Bachelors 58.2%
Masters 16.4%
Doctorate 0.0%
View as Graph

Mainframe Developer III Salary: Hourly Rate, Weekly Pay, and Monthly Pay

Understanding how a Mainframe Developer III's annual salary breaks down can help with budgeting. Below, you can see the average hourly rate, weekly pay, and monthly pay for this role. Use the buttons to switch between different pay periods.

Last Updated on October 01, 2026
$94,970
Average $102,940/year
$111,410
$7,914
Average $8,578/month
$9,284
$1,826
Average $1,980/week
$2,143
$46
Average $49/hour
$54
Annual Salary Monthly Pay Weekly Pay Hourly Wage
75th Percentile $111,410 $9,284 $2,143 $54
Average $102,940 $8,578 $1,980 $49
25th Percentile $94,970 $7,914 $1,826 $46

Mainframe Developer III Salary Growth & Career Path

Mainframe Developer III

Next Role

Advancement

Promotions are the fastest way to increase your earnings. As a Mainframe Developer III, you have the following paths for advancement. The table below compares the salary raises for common next-step roles. By comparing these figures, you can choose the career path that best meets your financial goals.

Next Step Role Estimate Salary Projected Raise
Application Programmer Analyst IV $143,700 40%
Software Research and Design Architect IV $145,710 42%
Backend Applications Developer IV $145,500 41%
Full Stack Engineer Specialist $145,500 41%

Most common benefits for Mainframe Developer III

  • Social Security
  • 401 (k)
  • Disability
  • Healthcare
  • Pension
  • Time Off (days)

Common company salaries for Mainframe Developer III

Here are companies hiring for Mainframe Developer III and their salaries, click below for more details.

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FAQ about Mainframe Developer III

1. What industry pays the highest salary for Mainframe Developer III?

The Financial Services industry offers the highest average compensation for Mainframe Developer III roles, with salaries approximately 25% above the market median.

2. Is learning mainframe worth IT?

Learning mainframe skills is definitely worth it. With salaries ranging from $91,570 to $115,900, expertise in this area can significantly enhance your career prospects. Mainframes are crucial for many large companies, making this knowledge a valuable asset in the IT field. Investing in these skills can lead to rewarding opportunities and job security.

3. Which developer has highest salary in US?

Mainframe developers in the US earn a salary range of approximately $91,570 to $115,900, with a median salary of around $101,630. While Python software engineers can earn between $104,000 and $200,000, mainframe developers also command competitive salaries due to their specialized skills in managing legacy systems and critical applications.

4. Does mainframe pay well?

Yes, mainframe developers are well-compensated. The salary data indicates a minimum salary of $91,570, a mid-range salary of $101,630, and a maximum salary of $115,900. This reflects the specialized skills required in this field, making it a lucrative career choice compared to many other software development roles.

5. Is COBOL still in demand?

Yes, COBOL is still in demand, particularly for maintaining and updating legacy systems. Many organizations continue to seek skilled Mainframe Developers, with salaries ranging from $91,570 to $115,900, reflecting the ongoing need for expertise in this area. While newer languages are emerging, COBOL remains vital for many businesses.

6. How much do mainframe developers make?

The estimated salary for a Mainframe Developer ranges from $91,570 to $115,900 per year, with a mid-range salary of approximately $101,630. This reflects the competitive compensation for professionals in this field, depending on experience and expertise.

7. Is mainframe developer a good career?

Becoming a mainframe developer can be the start of a successful career for those who are problem-solvers and enjoy working with technology. With salaries ranging from $91,570 to $115,900, this role offers competitive compensation. Many mainframe developers work in teams, thriving on collaboration with like-minded individuals, making it a rewarding career choice.

Where Does Our Salary Data Come From?

Salary.com provides salary estimates, histograms, trends, and comparisons using data from employer job postings and third-party sources.

We offer detailed salary information across multiple percentiles for your reference. (Click here to learn Why the Salary Midpoint Formula Is Crucial for Achieving Pay Equity.)

With the most extensive online, real-time compensation data available, Salary.com helps you pinpoint your exact pay target.

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