Software Mainframes Salaries
Software Mainframes salaries in United Kingdom
Base pay
£35K - £50K/yr
£42K/yrAverage base pay
Additional salary
£2K/yrAverage
£1K - £4K/yrRange
About our data
Very High Confidence
The “Most Likely Range” reflects values within the 25th and 75th percentile of all pay data available for this role. Glassdoor salaries are powered by our proprietary machine learning model, which utilises salaries collected from our users and the latest government data to make pay predictions.
How accurate is an average base pay range of £35K-£50K/yr?
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Popular companies for Software Mainframess in United Kingdom
52 companies
52 Popular companies with Software Mainframes
Viewing 1 - 5 of 52 results
Recent salaries shared by Mainframe Developer
15 salaries
Job title | Years of Experience
Total Pay
Location
Date submitted
Job title | Years of Experience
Location
Date submitted
Total Pay
Base • Additional pay
Mainframe Developer
4-6 Years
£59K/yr
£56K • £3K
London, England
submitted on 6 Apr 2026
£59K/yr
£56K • £3K
Mainframe Developer
1-3 Years
£24K/yr
£24K • £0
Birmingham, England
submitted on 16 Mar 2026
£24K/yr
£24K • £0
Mainframe Developer
15+ Years
£56K/yr
£50K • £6K
Hove, England
submitted on 3 Sept 2024
£56K/yr
£50K • £6K
Mainframe Developer
7-9 Years
£51K - £59K/yr
Belfast, Northern Ireland
submitted on 21 May 2024
£51K - £59K/yr
Mainframe Developer
15+ Years
£46K/yr
£46K • £0
Edinburgh, Scotland
submitted on 9 Oct 2023
£46K/yr
£46K • £0
Anonymously share your salary to help the community.
Mainframe Developer
15+ Years
£47K/yr
£47K • £0
Portsmouth, South East England, England
submitted on 25 Jun 2023
£47K/yr
£47K • £0
Mainframe Developer
10-14 Years
£45K - £52K/yr
Edinburgh, Scotland
submitted on 1 Jun 2023
£45K - £52K/yr
Mainframe Developer
1-3 Years
£110K - £129K/yr
London, England
submitted on 4 Jan 2023
£110K - £129K/yr
Mainframe Developer
15+ Years
£27K - £32K/yr
Belfast, Northern Ireland
submitted on 27 Aug 2022
£27K - £32K/yr
Mainframe Developer
4-6 Years
£31K - £35K/yr
Belfast, Northern Ireland
submitted on 1 Jun 2022
£31K - £35K/yr
Viewing 1 - 10 of 15
Glassdoor Economist Pay Overview

What is the pay outlook for Engineering?
Engineering jobs are in high demand and usually offer above-average salaries. Engineering offers ample opportunity for growth and development with transferable skills across an array of fields from software, supply chain and logistics to aerospace and industry. Most roles require a qualification, which can be obtained through a university degree or a diploma gained during an apprenticeship. Show more
Mainframe Developer salary in United Kingdom
A Mainframe Developer salary range in United Kingdom can vary based on important factors such as education, skills, certifications, and years of experience. A Mainframe Developer in United Kingdom can expect to see an entry level salary range of £69,257 to £145,588 per year, based on 713 salary contributions. At the highest seniority level, an experienced Mainframe Developer in United Kingdom can make a salary range of £79,417 to £127,736 with at least 5 years of experience, based on 9 salary contributions. The top 3 companies in United Kingdom where a Mainframe Developer gets the highest compensation are Verizon Communications Inc., Morgan Stanley and Pyramid Consulting Inc.. Bigger companies typically pay 35.00% more than smaller companies for a Mainframe Developer.Show more
Frequently asked questions about Mainframe Developer salaries
How much does a Mainframe Developer in United Kingdom make?
The average salary for a Mainframe Developer is £44,092 per year or £21 per hour in United Kingdom, which is in line with the national average. Top earners have reported making up to £65,376 (90th percentile). However, the typical pay range in United Kingdom is between £36,280 (25th percentile) and £53,995 (75th percentile) annually. Salary estimates are based on 12 salaries submitted anonymously to Glassdoor by Mainframe Developer employees in United Kingdom as of July 2026.
What is the highest salary for a Mainframe Developer in United Kingdom?
The highest salary for a Mainframe Developer in United Kingdom is £53,995 per year, £4,500 per month or £26 per hour.
What is the lowest salary for a Mainframe Developer in United Kingdom?
The lowest salary for a Mainframe Developer in United Kingdom is £36,280 per year, £3,023 per month or £17 per hour.
What is the salary trend for Mainframe Developers?
Mainframe developers tend to earn over somewhat over the national average, with entry-level roles being slightly under. Those based in locations such as London tend to earn higher salaries, with them sometimes reaching close to six figures. The pay range reflects the demand for their skillset and the profitability of the products they develop. Pay is expected to grow as the digital transformation reaches a global level. Mainframe developers can further increase their total pay by pursuing freelance consulting opportunities.
Does a Mainframe Developer make good money in United Kingdom?
About 80.00% of Mainframe Developer professionals feel satisfied with their salary, according to anonymous Glassdoor ratings. An additional £2,201 in potential pay per year, among other factors, can qualify the annual pay of a Mainframe Developer in United Kingdom as a good salary.
How much does a Mainframe Developer make over time in United Kingdom?
Mainframe Developer professionals in United Kingdom have a wide total pay range, between £30,583 and £65,376 depending on experience, with an estimated total pay of £44,092 following the average career path of a Mainframe Developer.



