Period
to 17 January 2021

The median contractor rate for a JavaScript Developer was £500 per day in advertised job vacancies in the City of London during the 6 months to 17 January 2021.

The first table below provides contractor rate benchmarking and summary statistics including a comparison to same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

JavaScript Developer
Central London > City of London
6 months to
17 Jan 2021
Same period 2020 Same period 2019
Rank 103 133 88
Rank change year-on-year +30 -45 +19
Contract jobs requiring a JavaScript Developer 22 69 203
As % of all contract jobs advertised in the City of London 1.08% 1.39% 2.98%
As % of the Job Titles category 1.18% 1.49% 3.14%
Number of daily rates quoted 19 62 197
Median daily rate £500 £525 £525
Median daily rate % change year-on-year -4.76% - +10.53%
10th Percentile £308 £413 £413
90th Percentile £628 £626 £643
Central London median daily rate £500 £525 £525
% change year-on-year -4.76% - +10.53%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
Central London median hourly rate - - -

The following table is for comparison with the above and includes summary statistics for all contract IT job vacancies advertised in the City of London. Most job vacancies include a discernible job title that can be normalized. As such, the figures in the second row provide an indication of the number of contract jobs in our overall sample.

All Contract IT Job Vacancies
City of London
Contract vacancies in the City of London with a recognized job title 1,866 4,645 6,466
% of contract IT jobs with a recognized job title 91.83% 93.46% 95.05%
Number of daily rates quoted 1,402 3,669 5,094
Median daily rate £515 £500 £500
Median daily rate % change year-on-year +3.00% - -
10th Percentile £305 £300 £300
90th Percentile £688 £675 £675
Central London median daily rate £513 £500 £500
% change year-on-year +2.50% - -
Number of hourly rates quoted 20 60 88
Median hourly rate £24.75 £19.75 £18.70
Median hourly rate % change year-on-year +25.32% +5.61% +10.00%
10th Percentile £16.58 £12.38 £12.93
90th Percentile £46.18 £49.50 £26.08
Median hourly rate £26.50 £19.75 £18.70
% change year-on-year +34.18% +5.61% +3.89%

JavaScript Developer
Job Vacancy Trend in the City of London

Job postings that featured JavaScript Developer in the job title as a proportion of all IT jobs advertised in the City of London.

Job vacancy trend for JavaScript Developer in the City of London

JavaScript Developer
Contractor Daily Rate Trend in the City of London

3-month moving average daily rate quoted in jobs citing JavaScript Developer in the City of London.

Daily rate trend for JavaScript Developer in the City of London

JavaScript Developer
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing JavaScript Developer in the City of London over the 6 months to 17 January 2021.

Daily rate histogram for JavaScript Developer in the City of London

JavaScript Developer
Contractor Hourly Rate Trend in the City of London

3-month moving average hourly rates quoted in jobs citing JavaScript Developer in the City of London.

Hourly rate trend for JavaScript Developer in the City of London

JavaScript Developer Skill Set
Top 30 Co-occurring IT Skills in the City of London

For the 6 months to 17 January 2021, JavaScript Developer contract jobs required the following IT skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all contract job ads across the City of London region featuring JavaScript Developer in the job title.

1 22 (100.00%) JavaScript
2 13 (59.09%) TypeScript
2 13 (59.09%) React
3 11 (50.00%) Agile Software Development
4 10 (45.45%) HTML
4 10 (45.45%) CSS
5 7 (31.82%) TDD
5 7 (31.82%) REST
6 6 (27.27%) AngularJS
6 6 (27.27%) Unit Testing
6 6 (27.27%) Redux
7 5 (22.73%) Banking
7 5 (22.73%) Java
7 5 (22.73%) Finance
7 5 (22.73%) Node.js
7 5 (22.73%) Front End Development
8 4 (18.18%) webpack
8 4 (18.18%) Docker
8 4 (18.18%) Microservices
8 4 (18.18%) HTML5
8 4 (18.18%) CSS3
8 4 (18.18%) BDD
8 4 (18.18%) Jasmine
8 4 (18.18%) Git (software)
8 4 (18.18%) Greenfield Project
9 3 (13.64%) npm
9 3 (13.64%) Web Development
9 3 (13.64%) Software Engineering
9 3 (13.64%) Back Office
9 3 (13.64%) Web Services

JavaScript Developer Skill Set
Co-occurring IT Skills in the City of London by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 1 (4.55%) Confluence
1 1 (4.55%) Elasticsearch
1 1 (4.55%) nginx
Cloud Services
1 3 (13.64%) npm
2 2 (9.09%) PaaS
2 2 (9.09%) SaaS
3 1 (4.55%) BlazeMeter
3 1 (4.55%) GCP
3 1 (4.55%) GitHub
3 1 (4.55%) Yarn
Database & Business Intelligence
1 3 (13.64%) MongoDB
1 3 (13.64%) NoSQL
2 1 (4.55%) BigQuery
2 1 (4.55%) HBase
2 1 (4.55%) PostgreSQL
2 1 (4.55%) SQL Server
2 1 (4.55%) SQL Server Integration Services
Development Applications
1 4 (18.18%) Git (software)
1 4 (18.18%) Jasmine
1 4 (18.18%) webpack
2 2 (9.09%) Bower
2 2 (9.09%) Grunt
2 2 (9.09%) gulp
2 2 (9.09%) Jenkins
2 2 (9.09%) JIRA
2 2 (9.09%) Karma Test Runner
2 2 (9.09%) Protractor
2 2 (9.09%) Subversion
2 2 (9.09%) Team Foundation Server
3 1 (4.55%) Cucumber
3 1 (4.55%) Cypress.io
3 1 (4.55%) Mocha
3 1 (4.55%) MSBuild
3 1 (4.55%) Selenium
3 1 (4.55%) Storybook
3 1 (4.55%) TeamCity
3 1 (4.55%) TestCafe
General
1 5 (22.73%) Banking
1 5 (22.73%) Finance
2 3 (13.64%) Back Office
3 1 (4.55%) Front Office
3 1 (4.55%) Investment Banking
3 1 (4.55%) Manufacturing
3 1 (4.55%) Retail
Libraries, Frameworks & Software Standards
1 13 (59.09%) React
2 10 (45.45%) CSS
2 10 (45.45%) HTML
3 7 (31.82%) REST
4 6 (27.27%) AngularJS
4 6 (27.27%) Redux
5 5 (22.73%) Node.js
6 4 (18.18%) CSS3
6 4 (18.18%) HTML5
7 3 (13.64%) Web Services
8 2 (9.09%) Express
8 2 (9.09%) Jest
8 2 (9.09%) JSON
8 2 (9.09%) Kafka
8 2 (9.09%) LESS
8 2 (9.09%) NgRx
8 2 (9.09%) RxJS
8 2 (9.09%) Sass
8 2 (9.09%) Spring
8 2 (9.09%) Twitter Bootstrap
Miscellaneous
1 4 (18.18%) Greenfield Project
2 2 (9.09%) Self-Motivation
2 2 (9.09%) User Experience
3 1 (4.55%) Derivative
3 1 (4.55%) Foreign Exchange (FX)
Operating Systems
1 1 (4.55%) Linux
Processes & Methodologies
1 11 (50.00%) Agile Software Development
2 7 (31.82%) TDD
3 6 (27.27%) Unit Testing
4 5 (22.73%) Front End Development
5 4 (18.18%) BDD
5 4 (18.18%) Microservices
6 3 (13.64%) Fintech
6 3 (13.64%) Software Engineering
6 3 (13.64%) Web Development
7 2 (9.09%) Continuous Integration
7 2 (9.09%) Migration
7 2 (9.09%) Problem-Solving
7 2 (9.09%) Requirements Gathering
7 2 (9.09%) Scrum
7 2 (9.09%) SEO
7 2 (9.09%) Test Automation
8 1 (4.55%) Machine Learning
8 1 (4.55%) Open Source
8 1 (4.55%) Software Architecture
8 1 (4.55%) Web Accessibility
Programming Languages
1 22 (100.00%) JavaScript
2 13 (59.09%) TypeScript
3 5 (22.73%) Java
4 3 (13.64%) ES6
4 3 (13.64%) Kotlin
4 3 (13.64%) Python
4 3 (13.64%) SQL
5 2 (9.09%) C#
6 1 (4.55%) PHP
6 1 (4.55%) Scala
System Software
1 4 (18.18%) Docker
Vendors
1 1 (4.55%) Bloomberg