How Much Does a Custom Application Developer I Make in London, UK? Salary Range, Hourly Rate and More

As of April 22, 2025, the average annual salary for a Custom Application Developer I in London, UK is £54,216, with an hourly rate of £26, according to Salary.com Global Salary IQ data. The average salary ranges from £45,900 to £63,396, influenced by factors like location, education, experience, and more.

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Global Market Data

25TH £45,900

50TH(Median) £54,216

75TH £63,396

Custom Application Developer I Salaries by Percentile

Percentile	Salary	Location	Last Updated
25th Percentile Custom Application Developer I Salary	£45,900	United Kingdom	April 22, 2025
50th Percentile Custom Application Developer I Salary	£54,216	United Kingdom	April 22, 2025
75th Percentile Custom Application Developer I Salary	£63,396	United Kingdom	April 22, 2025

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How Much Does a Custom Application Developer I Make by Hour, Week, Month, and Year?

Last Updated on April 22, 2025

£45,900

Average £54,216/year

£63,396

£3,825

Average £4,518/month

£5,283

£883

Average £1,043/week

£1,219

£22

Average £26/hour

£30

	Annual Salary	Monthly Pay	Weekly Pay	Hourly Wage
75th Percentile	£63,396	£5,283	£1,219	£30
Average	£54,216	£4,518	£1,043	£26
25th Percentile	£45,900	£3,825	£883	£22

Salary.com provides you with accurate and diversified Custom Application Developer I salary data based on specialized databases to help you get a fairer salary. The average annual pay for a Custom Application Developer I is about £54,216 a year, this translates to an approximate hourly rate of £26, a monthly salary of about £4,518, and a weekly pay of around £1,043. Click the switch button below to see more details about Custom Application Developer I hourly pay, weekly pay, monthly pay, and so on.

How Much Do Custom Application Developer Is Earn at Different Levels in 2025?

A Custom Application Developer I's salary varies significantly based on experience level. Entry typically earn £50,492 - £55,175, while Intermediate make £51,113 - £55,860, Senior earn £53,347 - £58,326, Specialist earn £53,595 - £58,737, Expert can reach £53,968 - £59,012 or more, depending on the company and location.

Levels	Salary
Entry Level Custom Application Developer I	£53,595
Intermediate Level Custom Application Developer I	£54,216
Senior Level Custom Application Developer I	£56,545
Specialist Level Custom Application Developer I	£56,956
Expert Level Custom Application Developer I	£57,230

Entry Level	1%
Intermediate Level	0%
Senior Level	4%
Specialist Level	5%
Expert Level	6%

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Last Updated on April 22, 2025

Skills to Boost a Custom Application Developer I Salary

Mastering key skills can significantly increase your earning potential as a Custom Application Developer I. According to Salary.com's Real-time Job Posting Data, expertise in Problem Solving can lead to a 3% salary raise, while strong Java skills boost pay by a 3%. Even Programming can result in a 2% salary increase.

Skills Definition Skills % Demand Skills % Salary Increase

Skill Library evaluates talent skills across five levels, supported by 5-10 behavior indicators, delivering precise insights for data-driven hiring decisions.

Problem Solving

Analyzing and identifying the root cause of problems and applying critical thinking skills to solve problems.

Java

Using Java in the development and maintenance of application programs and systems.

Programming

Executing logic to facilitate computing operations and functionality in one or more languages.

More Skills...

Based on recent job listings, in-demand skills in the Custom Application Developer I field include Problem Solving (3%), Java (3%), Programming (2%), Product Engineering (2%), and Application Development (2%). These skills reflect current market needs.

Skills	Salary	Demand
Skill & Salary	Demand
Problem Solving	£51,706	Problem Solving £51,706	3%
Java	£51,706	Java £51,706	3%
Programming	£51,204	Programming £51,204	2%
Product Engineering	£51,204	Product Engineering £51,204	2%
Application Development	£51,204	Application Development £51,204	2%

Problem Solving

2.13%

Java

7.28%

Programming

1.55%

Product Engineering

8.78%

Application Development

1.05%

What are the Highest Paying Cities in the United Kingdom for Custom Application Developer I?

The top 3 highest-paying cities in the United Kingdom for Custom Application Developer I are London, Brighton and Hove, and Manchester. In London, the average salary is £54,216 per year, while Brighton and Hove offers £50,573, and Manchester pays around £48,119 annually.

Which Job Pays More: Application Systems Analysis/Developer I or Custom Application Developer I?

As of April 22, 2025 , a Application Systems Analysis/Developer I makes less than a Custom Application Developer I. A Application Systems Analysis/Developer I earns an average annual salary of £38,440. And a Custom Application Developer I earns an average annual salary of £50,200.

Job Title	Location	Salary Range in GBP
Application Systems Analysis/Developer I	London, UK	£29,114 £42,961
Software Developer I	London, UK	£27,973 £37,029
Application Systems Analysis/Developer II	London, UK	£35,096 £48,949
Application Systems Analysis/Developer III	London, UK	£47,322 £63,503
Application Systems Analysis/Developer IV	London, UK	£63,613 £95,365

Custom Application Developer I Job Openings in London, UK

Python Developer

Xtremepush

Milton Keynes, South East England

About The Role. As a Python developer at Xtremepush, you will be part of our Customer Data team and will report into our Customer Data Team Lead. You ...

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