Period
to 15 December 2019

The median contractor rate for a JavaScript Developer was £525 per day in advertised job vacancies in the City of London during the 6 months to 15 December 2019.

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
15 Dec 2019
Same period 2018 Same period 2017
Rank 124 92 113
Rank change year-on-year -32 +21 -20
Contract jobs requiring a JavaScript Developer 90 204 169
As % of all contract IT jobs advertised in the City of London 1.63% 2.89% 2.35%
As % of the Job Titles category 1.75% 3.03% 2.48%
Number of daily rates quoted 76 192 152
City of London median daily rate £525 £525 £475
Median daily rate % change year-on-year - +10.53% +4.11%
10th Percentile £348 £407 £350
90th Percentile £647 £650 £625
Central London median daily rate £513 £525 £475
% change year-on-year -2.38% +10.53% -
Number of hourly rates quoted 0 0 0
City of London 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 5,142 6,728 6,813
% of contract IT jobs with a recognized job title 93.22% 95.30% 94.72%
Number of daily rates quoted 3,987 5,293 5,410
City of London median daily rate £505 £500 £500
Median daily rate % change year-on-year +0.90% - +5.26%
10th Percentile £306 £300 £313
90th Percentile £675 £675 £688
Central London median daily rate £500 £500 £500
Number of hourly rates quoted 66 106 94
City of London median hourly rate £20.25 £18.70 £17.00
Median hourly rate % change year-on-year +8.29% +10.00% -2.52%
10th Percentile £12.04 £13.00 £11.25
90th Percentile £51.75 £26.50 £30.75
Central London median hourly rate £20.50 £18.70 £18.10
% change year-on-year +9.63% +3.31% +6.47%

JavaScript Developer
Job Vacancy Trend in the City of London

Job postings that featured JavaScript Developer in the job title as a percentage 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

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing JavaScript Developer in the City of London.

Contractor daily rate trend for JavaScript Developer in the City of London

JavaScript Developer
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing JavaScript Developer in the City of London over the 6 months to 15 December 2019.

Contractor daily rate histogram for JavaScript Developer in the City of London

JavaScript Developer
Contractor Hourly Rate Trend in the City of London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing JavaScript Developer in the City of London.

Contractor hourly rate trend for JavaScript Developer in the City of London

JavaScript Developer
Contract Job Locations in the City of London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing JavaScript Developer within the City of London region over the 6 months to 15 December 2019. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
London Bridge -1 6 £525 -
JavaScript Developer
Central London

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

For the 6 months to 15 December 2019, 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 90 (100.00%) JavaScript
2 46 (51.11%) CSS
3 45 (50.00%) HTML
4 44 (48.89%) React
5 41 (45.56%) Agile Software Development
6 35 (38.89%) AngularJS
7 32 (35.56%) Node.js
8 26 (28.89%) Finance
9 22 (24.44%) TypeScript
10 20 (22.22%) TDD
10 20 (22.22%) Redux
11 17 (18.89%) HTML5
12 16 (17.78%) AWS
12 16 (17.78%) webpack
12 16 (17.78%) Front End Development
13 14 (15.56%) ES6
14 13 (14.44%) Fintech
14 13 (14.44%) C#
15 12 (13.33%) Java
15 12 (13.33%) Scrum
16 11 (12.22%) MVC
16 11 (12.22%) Software Engineering
16 11 (12.22%) DevOps
16 11 (12.22%) Git (software)
16 11 (12.22%) Sass
16 11 (12.22%) Greenfield Project
17 10 (11.11%) Vue.js
17 10 (11.11%) Google
17 10 (11.11%) Kanban
18 9 (10.00%) .NET

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 4 (4.44%) CMS
2 1 (1.11%) Apache
2 1 (1.11%) Apache Solr
2 1 (1.11%) Confluence
2 1 (1.11%) Drupal
2 1 (1.11%) Elasticsearch
2 1 (1.11%) IIS
2 1 (1.11%) JBoss
2 1 (1.11%) Liferay
2 1 (1.11%) Tomcat
Cloud Services
1 16 (17.78%) AWS
2 9 (10.00%) Azure
2 9 (10.00%) GCP
3 4 (4.44%) Serverless
4 3 (3.33%) Cloud Computing
5 2 (2.22%) GitHub
5 2 (2.22%) npm
6 1 (1.11%) AWS Lambda
6 1 (1.11%) Firebase
6 1 (1.11%) PaaS
6 1 (1.11%) SaaS
6 1 (1.11%) WeChat
Database & Business Intelligence
1 7 (7.78%) MongoDB
1 7 (7.78%) MySQL
2 5 (5.56%) SQL Server
3 1 (1.11%) Big Data
3 1 (1.11%) Blockchain
3 1 (1.11%) Geospatial Data
3 1 (1.11%) NoSQL
3 1 (1.11%) Oracle Database
3 1 (1.11%) PostgreSQL
3 1 (1.11%) Relational Database
3 1 (1.11%) Spatial Data
Development Applications
1 16 (17.78%) webpack
2 11 (12.22%) Git (software)
3 6 (6.67%) Babel
4 4 (4.44%) Jenkins
5 3 (3.33%) JIRA
5 3 (3.33%) Mocha
5 3 (3.33%) NUnit
6 2 (2.22%) Cucumber
6 2 (2.22%) git-flow
6 2 (2.22%) Grunt
6 2 (2.22%) Jasmine
6 2 (2.22%) Karma Test Runner
6 2 (2.22%) Moq
6 2 (2.22%) Selenium
6 2 (2.22%) Team Foundation Server
7 1 (1.11%) Bitbucket
7 1 (1.11%) Cypress.io
7 1 (1.11%) gulp
7 1 (1.11%) MSTest
7 1 (1.11%) TeamCity
General
1 26 (28.89%) Finance
2 7 (7.78%) Front Office
3 4 (4.44%) Law
3 4 (4.44%) Legal
3 4 (4.44%) Marketing
4 3 (3.33%) Banking
5 2 (2.22%) Advertising
5 2 (2.22%) Public Sector
6 1 (1.11%) Electronics
6 1 (1.11%) Manufacturing
6 1 (1.11%) Retail
6 1 (1.11%) Telecoms
Libraries, Frameworks & Software Standards
1 46 (51.11%) CSS
2 45 (50.00%) HTML
3 44 (48.89%) React
4 35 (38.89%) AngularJS
5 32 (35.56%) Node.js
6 20 (22.22%) Redux
7 17 (18.89%) HTML5
8 11 (12.22%) Sass
9 10 (11.11%) Vue.js
10 9 (10.00%) .NET
10 9 (10.00%) CSS3
11 8 (8.89%) jQuery
12 7 (7.78%) ASP.NET
13 6 (6.67%) RESTful
14 5 (5.56%) Express
14 5 (5.56%) REST
14 5 (5.56%) Spring
14 5 (5.56%) Spring Boot
15 4 (4.44%) Fusebox
15 4 (4.44%) JSON
Miscellaneous
1 11 (12.22%) Greenfield Project
2 6 (6.67%) User Experience
3 4 (4.44%) Foreign Exchange (FX)
4 3 (3.33%) Derivative
4 3 (3.33%) Equity Derivative
5 2 (2.22%) Analytical Skills
5 2 (2.22%) Mobile App
6 1 (1.11%) Algorithms
6 1 (1.11%) Analytical Mindset
6 1 (1.11%) Cloud Native
6 1 (1.11%) Data Structures
6 1 (1.11%) Enterprise Software
6 1 (1.11%) FMCG
6 1 (1.11%) W3C
Operating Systems
1 7 (7.78%) Linux
2 2 (2.22%) Solaris
3 1 (1.11%) Red Hat Enterprise Linux
3 1 (1.11%) Ubuntu
3 1 (1.11%) Unix
Processes & Methodologies
1 41 (45.56%) Agile Software Development
2 20 (22.22%) TDD
3 16 (17.78%) Front End Development
4 13 (14.44%) Fintech
5 12 (13.33%) Scrum
6 11 (12.22%) DevOps
6 11 (12.22%) MVC
6 11 (12.22%) Software Engineering
7 10 (11.11%) Kanban
8 8 (8.89%) Test Automation
9 7 (7.78%) Continuous Integration
9 7 (7.78%) Pair Programming
10 6 (6.67%) E-Commerce
10 6 (6.67%) Web Development
11 5 (5.56%) BDD
11 5 (5.56%) Computer Science
11 5 (5.56%) Microservices
11 5 (5.56%) Wealth Management
12 4 (4.44%) Analytics
12 4 (4.44%) Software Delivery
Programming Languages
1 90 (100.00%) JavaScript
2 22 (24.44%) TypeScript
3 14 (15.56%) ES6
4 13 (14.44%) C#
5 12 (13.33%) Java
6 7 (7.78%) SQL
7 5 (5.56%) PHP
8 4 (4.44%) Java 8
8 4 (4.44%) Python
9 2 (2.22%) ANSI SQL
9 2 (2.22%) ES7
9 2 (2.22%) Go
9 2 (2.22%) Ruby
10 1 (1.11%) JSX
10 1 (1.11%) Scala
Qualifications
1 3 (3.33%) SC Cleared
1 3 (3.33%) Security Cleared
2 2 (2.22%) Computer Science Degree
2 2 (2.22%) Degree
3 1 (1.11%) BPSS Clearance
Quality Assurance & Compliance
1 1 (1.11%) QA
1 1 (1.11%) WCAG
System Software
1 5 (5.56%) Docker
Systems Management
1 2 (2.22%) Kubernetes
2 1 (1.11%) Docker Swarm
2 1 (1.11%) Terraform
Vendors
1 10 (11.11%) Google
2 4 (4.44%) Oracle
3 1 (1.11%) Atlassian
3 1 (1.11%) Bloomberg
3 1 (1.11%) Facebook
3 1 (1.11%) Microsoft
3 1 (1.11%) Perforce
3 1 (1.11%) Red Hat
3 1 (1.11%) SAP
3 1 (1.11%) Twitter
3 1 (1.11%) WSO2