Period
to 13 December 2019

The median contractor rate for a JavaScript Developer was £525 per day in advertised job vacancies in London during the 6 months to 13 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
England > London
6 months to
13 Dec 2019
Same period 2018 Same period 2017
Rank 147 107 95
Rank change year-on-year -40 -12 -2
Contract jobs requiring a JavaScript Developer 621 1,158 1,335
As % of all contract IT jobs advertised in London 1.83% 2.47% 2.81%
As % of the Job Titles category 1.96% 2.60% 2.96%
Number of daily rates quoted 509 1,031 1,115
London median daily rate £525 £500 £500
Median daily rate % change year-on-year +5.00% - +11.11%
10th Percentile £375 £363 £363
90th Percentile £700 £650 £625
England median daily rate £475 £475 £450
% change year-on-year - +5.56% +5.88%
Number of hourly rates quoted 6 2 0
London median hourly rate £61.25 £47.50 -
Median hourly rate % change year-on-year +28.95% - -
England median hourly rate £61.25 £47.50 £42.06
% change year-on-year +28.95% +12.95% -1.05%

The following table is for comparison with the above and includes summary statistics for all contract IT job vacancies advertised in 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
London
Contract vacancies in London with a recognized job title 31,677 44,502 45,175
% of contract IT jobs with a recognized job title 93.53% 94.80% 94.98%
Number of daily rates quoted 22,701 32,141 32,777
London median daily rate £500 £500 £500
10th Percentile £300 £313 £300
90th Percentile £678 £675 £663
England median daily rate £463 £460 £450
% change year-on-year +0.54% +2.22% +5.88%
Number of hourly rates quoted 477 601 555
London median hourly rate £22.00 £20.00 £20.00
Median hourly rate % change year-on-year +10.00% - +4.00%
10th Percentile £12.44 £12.75 £12.00
90th Percentile £53.47 £53.75 £47.83
England median hourly rate £19.00 £18.50 £18.70
% change year-on-year +2.70% -1.07% +3.89%

JavaScript Developer
Job Vacancy Trend in London

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

Job vacancy trend for JavaScript Developer in London

JavaScript Developer
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for JavaScript Developer in London

JavaScript Developer
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing JavaScript Developer in London over the 6 months to 13 December 2019.

Contractor daily rate histogram for JavaScript Developer in London

JavaScript Developer
Contractor Hourly Rate Trend in London

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

Contractor hourly rate trend for JavaScript Developer in London

JavaScript Developer
Contractor Hourly Rate Histogram in London

The hourly rate distribution of IT jobs citing JavaScript Developer in London over the 6 months to 13 December 2019.

Contractor hourly rate histogram for JavaScript Developer in London

JavaScript Developer
Contract Job Locations in 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 London region over the 6 months to 13 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
Central London -51 118 £513 -2.38% 80
West London +14 38 £475 +2.70% 43
South London +5 13 £450 -1.37% 1
East London +14 5 £500 -6.98% 14
North London +8 5 £375 -6.83% 3
JavaScript Developer
England

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

For the 6 months to 13 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 London region featuring JavaScript Developer in the job title.

1 621 (100.00%) JavaScript
2 328 (52.82%) React
3 291 (46.86%) Agile Software Development
4 263 (42.35%) Node.js
5 245 (39.45%) HTML
6 223 (35.91%) CSS
7 178 (28.66%) TDD
8 167 (26.89%) AngularJS
9 152 (24.48%) Front End Development
10 141 (22.71%) Finance
10 141 (22.71%) Redux
11 108 (17.39%) HTML5
12 100 (16.10%) TypeScript
13 99 (15.94%) ES6
14 95 (15.30%) AWS
15 92 (14.81%) Git (software)
15 92 (14.81%) Java
16 85 (13.69%) C#
17 82 (13.20%) Azure
18 75 (12.08%) .NET
19 74 (11.92%) Scrum
20 73 (11.76%) Docker
21 72 (11.59%) Greenfield Project
22 70 (11.27%) Vue.js
23 65 (10.47%) Microservices
23 65 (10.47%) Software Engineering
24 63 (10.14%) Python
24 63 (10.14%) BDD
25 60 (9.66%) OO
25 60 (9.66%) Continuous Integration

JavaScript Developer Skill Set
Co-occurring IT Skills in 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 21 (3.38%) Confluence
2 15 (2.42%) CMS
3 14 (2.25%) Elasticsearch
4 10 (1.61%) Apache Spark
5 5 (0.81%) SharePoint
5 5 (0.81%) WordPress
6 3 (0.48%) Apache
7 2 (0.32%) IIS
8 1 (0.16%) Adobe Experience Manager
8 1 (0.16%) Apache Solr
8 1 (0.16%) Drupal
8 1 (0.16%) Headless CMS
8 1 (0.16%) JBoss
8 1 (0.16%) Liferay
8 1 (0.16%) Sitefinity
8 1 (0.16%) Tomcat
Applications
1 11 (1.77%) Photoshop
2 4 (0.64%) Adobe Illustrator
3 2 (0.32%) Chatbot
3 2 (0.32%) InVision
3 2 (0.32%) Microsoft Excel
Cloud Services
1 95 (15.30%) AWS
2 82 (13.20%) Azure
3 49 (7.89%) GCP
4 34 (5.48%) Serverless
5 23 (3.70%) AWS Lambda
6 21 (3.38%) GitHub
7 12 (1.93%) npm
8 11 (1.77%) Slack
9 9 (1.45%) Amazon S3
10 8 (1.29%) Firebase
11 5 (0.81%) Amazon EC2
11 5 (0.81%) Amazon SQS
11 5 (0.81%) SaaS
11 5 (0.81%) Yarn
12 4 (0.64%) AWS Elastic Beanstalk
12 4 (0.64%) OpenShift
12 4 (0.64%) Trello
13 3 (0.48%) AWS CloudFormation
13 3 (0.48%) Cloud Computing
13 3 (0.48%) Google Analytics
Communications & Networking
1 10 (1.61%) HTTP
2 9 (1.45%) HTTPS
3 7 (1.13%) Internet
4 3 (0.48%) RTMP
5 2 (0.32%) Skype
6 1 (0.16%) FTP
6 1 (0.16%) SMTP
6 1 (0.16%) SSH
Database & Business Intelligence
1 33 (5.31%) SQL Server
2 27 (4.35%) MySQL
3 20 (3.22%) Big Data
4 18 (2.90%) PostgreSQL
5 17 (2.74%) MongoDB
6 13 (2.09%) NoSQL
6 13 (2.09%) Relational Database
7 10 (1.61%) Blockchain
7 10 (1.61%) Hadoop
8 9 (1.45%) Data Warehouse
9 8 (1.29%) Amazon DynamoDB
10 7 (1.13%) Amazon Redshift
11 6 (0.97%) Amazon RDS
12 5 (0.81%) RDBMS
13 3 (0.48%) Azure SQL Database
13 3 (0.48%) BigQuery
13 3 (0.48%) Neo4j
13 3 (0.48%) Oracle Database
13 3 (0.48%) Redis
14 2 (0.32%) PowerPivot
Development Applications
1 92 (14.81%) Git (software)
2 45 (7.25%) webpack
3 38 (6.12%) Jenkins
4 35 (5.64%) JIRA
5 30 (4.83%) Jasmine
5 30 (4.83%) Mocha
6 20 (3.22%) Selenium
7 18 (2.90%) Karma Test Runner
8 17 (2.74%) Cucumber
9 16 (2.58%) Bitbucket
10 13 (2.09%) gulp
11 11 (1.77%) Cypress.io
12 10 (1.61%) Babel
13 9 (1.45%) Grunt
13 9 (1.45%) NUnit
13 9 (1.45%) Team Foundation Server
14 8 (1.29%) Subversion
15 7 (1.13%) Protractor
16 6 (0.97%) GitLab
16 6 (0.97%) PostCSS
General
1 141 (22.71%) Finance
2 57 (9.18%) Front Office
3 56 (9.02%) Banking
4 19 (3.06%) Marketing
5 15 (2.42%) Investment Banking
6 12 (1.93%) Retail
7 11 (1.77%) Public Sector
8 9 (1.45%) Games
9 8 (1.29%) Law
10 4 (0.64%) Advertising
10 4 (0.64%) Legal
10 4 (0.64%) Publishing
11 3 (0.48%) Aerospace
12 2 (0.32%) Corporate Banking
12 2 (0.32%) Manufacturing
12 2 (0.32%) Retail Banking
13 1 (0.16%) Automotive
13 1 (0.16%) Back Office
13 1 (0.16%) Billing
13 1 (0.16%) Private Banking
Libraries, Frameworks & Software Standards
1 328 (52.82%) React
2 263 (42.35%) Node.js
3 245 (39.45%) HTML
4 223 (35.91%) CSS
5 167 (26.89%) AngularJS
6 141 (22.71%) Redux
7 108 (17.39%) HTML5
8 75 (12.08%) .NET
9 70 (11.27%) Vue.js
10 58 (9.34%) CSS3
10 58 (9.34%) RESTful
11 52 (8.37%) Web Services
12 47 (7.57%) GraphQL
13 46 (7.41%) Sass
14 44 (7.09%) jQuery
14 44 (7.09%) REST
15 42 (6.76%) Jest
16 40 (6.44%) ASP.NET
17 27 (4.35%) LESS
18 26 (4.19%) React Native
Miscellaneous
1 72 (11.59%) Greenfield Project
2 45 (7.25%) User Experience
3 36 (5.80%) Analytical Skills
4 31 (4.99%) Foreign Exchange (FX)
5 28 (4.51%) Derivative
6 23 (3.70%) Algorithms
7 22 (3.54%) Equities
8 21 (3.38%) Fixed Income
9 19 (3.06%) Data Structures
10 18 (2.90%) Blog
11 17 (2.74%) Mobile App
12 13 (2.09%) Hedge funds
13 12 (1.93%) Linux Command Line
14 10 (1.61%) Video\Live Streaming
15 9 (1.45%) Enterprise Software
15 9 (1.45%) Video on Demand
16 8 (1.29%) Self-Motivation
17 7 (1.13%) Analytical Mindset
17 7 (1.13%) Digital Media
18 6 (0.97%) Online Games
Operating Systems
1 29 (4.67%) Linux
2 19 (3.06%) Android
3 9 (1.45%) Apple iOS
4 7 (1.13%) Unix
5 2 (0.32%) AIX
5 2 (0.32%) Mac OS
5 2 (0.32%) Solaris
6 1 (0.16%) Mac OS X
6 1 (0.16%) Red Hat Enterprise Linux
6 1 (0.16%) Ubuntu
6 1 (0.16%) Windows
Processes & Methodologies
1 291 (46.86%) Agile Software Development
2 178 (28.66%) TDD
3 152 (24.48%) Front End Development
4 74 (11.92%) Scrum
5 65 (10.47%) Microservices
5 65 (10.47%) Software Engineering
6 63 (10.14%) BDD
7 60 (9.66%) Continuous Integration
7 60 (9.66%) OO
8 59 (9.50%) E-Commerce
9 57 (9.18%) DevOps
10 54 (8.70%) Fintech
11 48 (7.73%) Open Source
12 47 (7.57%) Web Development
13 46 (7.41%) MVC
14 43 (6.92%) Test Automation
15 40 (6.44%) Problem-Solving
16 35 (5.64%) Kanban
17 31 (4.99%) Unit Testing
18 27 (4.35%) Asset Management
Programming Languages
1 621 (100.00%) JavaScript
2 100 (16.10%) TypeScript
3 99 (15.94%) ES6
4 92 (14.81%) Java
5 85 (13.69%) C#
6 63 (10.14%) Python
7 59 (9.50%) SQL
8 21 (3.38%) PHP
9 18 (2.90%) Java 8
10 14 (2.25%) Ruby
11 11 (1.77%) C++
11 11 (1.77%) ES7
12 9 (1.45%) Go
13 8 (1.29%) Scala
14 5 (0.81%) BrightScript
15 4 (0.64%) ActionScript
16 3 (0.48%) ES8
16 3 (0.48%) PowerShell
16 3 (0.48%) R
16 3 (0.48%) XAML
Qualifications
1 31 (4.99%) Degree
2 23 (3.70%) Security Cleared
3 16 (2.58%) SC Cleared
4 12 (1.93%) Computer Science Degree
5 6 (0.97%) Master's Degree
6 4 (0.64%) BC Cleared
7 2 (0.32%) BPSS Clearance
7 2 (0.32%) DV Cleared
8 1 (0.16%) DBS Check
8 1 (0.16%) Numerate Degree
Quality Assurance & Compliance
1 18 (2.90%) QA
2 5 (0.81%) WCAG
3 1 (0.16%) Data Quality
3 1 (0.16%) PMO
3 1 (0.16%) PSD2
System Software
1 73 (11.76%) Docker
2 5 (0.81%) Virtual Machines
3 1 (0.16%) Active Directory
Systems Management
1 22 (3.54%) Kubernetes
2 17 (2.74%) Terraform
3 7 (1.13%) Ansible
4 5 (0.81%) Kibana
5 4 (0.64%) logstash
6 2 (0.32%) Control-M
6 2 (0.32%) Opscode Chef
6 2 (0.32%) Puppet
7 1 (0.16%) Docker Swarm
7 1 (0.16%) Packer
Vendors
1 28 (4.51%) Google
2 20 (3.22%) Microsoft
3 9 (1.45%) Oracle
4 6 (0.97%) Databricks
4 6 (0.97%) StreamSets
5 5 (0.81%) Roku
6 4 (0.64%) Adobe
7 2 (0.32%) Atlassian
7 2 (0.32%) Fidessa
7 2 (0.32%) MEDITECH
7 2 (0.32%) Optimizely
7 2 (0.32%) Tableau
7 2 (0.32%) WSO2
8 1 (0.16%) Bloomberg
8 1 (0.16%) Facebook
8 1 (0.16%) New Relic
8 1 (0.16%) Red Hat
8 1 (0.16%) ServiceNow
8 1 (0.16%) TIBCO
8 1 (0.16%) Twitter