Period
to 18 January 2018

The median contractor rate for a JavaScript Developer was £500 per day in advertised job vacancies in London during the 6 months to 18 January 2018.

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
18 Jan 2018
Same period 2017 Same period 2016
Rank 88 94 64
Rank change year-on-year +6 -30 +34
Contract jobs requiring a JavaScript Developer 1,222 1,184 1,439
As % of all contract IT jobs advertised in London 2.63% 2.82% 3.28%
As % of the Job Titles category 2.77% 2.97% 3.45%
Number of daily rates quoted 1,032 997 1,222
London median daily rate £500 £451 £438
Median daily rate % change year-on-year +10.99% +2.97% +5.11%
10th Percentile £363 £332 £313
90th Percentile £625 £588 £575
England median daily rate £450 £425 £400
% change year-on-year +5.88% +6.25% -
Number of hourly rates quoted 0 3 1
London median hourly rate - £85.00 £30.00
Median hourly rate % change year-on-year - +183.33% -25.00%
England median hourly rate £45.00 £46.00 £42.00
% change year-on-year -2.17% +9.52% +5.00%

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 44,053 39,899 41,706
% of contract IT jobs with a recognized job title 94.75% 94.98% 95.15%
Number of daily rates quoted 32,029 28,436 29,402
London median daily rate £500 £465 £450
Median daily rate % change year-on-year +7.53% +3.33% +5.88%
10th Percentile £300 £300 £275
90th Percentile £669 £643 £638
England median daily rate £450 £425 £415
% change year-on-year +5.88% +2.41% +3.75%
Number of hourly rates quoted 570 559 641
London median hourly rate £19.57 £20.50 £19.00
Median hourly rate % change year-on-year -4.54% +7.89% +8.57%
10th Percentile £12.00 £11.77 £11.25
90th Percentile £47.83 £50.00 £47.83
England median hourly rate £18.30 £18.39 £18.50
% change year-on-year -0.48% -0.61% +12.12%

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 18 January 2018.

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
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 18 January 2018. 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 -34 207 £475 - 76
West London +11 78 £475 +11.76% 58
South London -46 18 £375 +2.04% 4
East London -6 10 £500 - 8
North London -5 1 £425 -22.73% 3
JavaScript Developer
England

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

For the 6 months to 18 January 2018, JavaScript Developer contract jobs required the following IT skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the London region featuring JavaScript Developer in the job title.

1 1,222 (100.00%) JavaScript
2 747 (61.13%) HTML
3 678 (55.48%) CSS
4 598 (48.94%) React
5 596 (48.77%) Agile Software Development
6 566 (46.32%) AngularJS
7 484 (39.61%) Node.js
8 456 (37.32%) HTML5
9 442 (36.17%) TDD
10 313 (25.61%) Front End Development
11 287 (23.49%) CSS3
12 263 (21.52%) ES6
13 240 (19.64%) Java
14 239 (19.56%) Git (software)
15 221 (18.09%) BDD
16 217 (17.76%) Finance
17 194 (15.88%) C#
18 193 (15.79%) RESTful
19 184 (15.06%) Sass
20 173 (14.16%) OO
21 170 (13.91%) Redux
22 159 (13.01%) Banking
23 153 (12.52%) jQuery
24 151 (12.36%) Continuous Integration
25 143 (11.70%) .NET
26 135 (11.05%) Web Development
26 135 (11.05%) Docker
27 130 (10.64%) webpack
28 128 (10.47%) TypeScript
28 128 (10.47%) SQL

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 26 (2.13%) CMS
2 19 (1.55%) Apache
3 17 (1.39%) Tomcat
4 16 (1.31%) Elasticsearch
5 11 (0.90%) Adobe Experience Manager
5 11 (0.90%) Apache Spark
5 11 (0.90%) Confluence
6 8 (0.65%) WordPress
7 7 (0.57%) Drupal
7 7 (0.57%) WebSphere
8 5 (0.41%) Joomla!
9 4 (0.33%) Jetty
10 3 (0.25%) Cloud Foundry
10 3 (0.25%) JBoss
10 3 (0.25%) Oracle SOA Suite
10 3 (0.25%) SharePoint
10 3 (0.25%) Umbraco
10 3 (0.25%) WebSphere Application Server
10 3 (0.25%) WildFly
11 2 (0.16%) OpenStack
Applications
1 14 (1.15%) Microsoft Excel
2 12 (0.98%) Photoshop
3 4 (0.33%) Adobe Creative Suite
3 4 (0.33%) Adobe Illustrator
3 4 (0.33%) Microsoft Office
3 4 (0.33%) Microsoft PowerPoint
4 3 (0.25%) OmniGraffle
5 2 (0.16%) MS Visio
6 1 (0.082%) GIMP
Business Applications
1 18 (1.47%) Dynamics CRM
2 9 (0.74%) ION MarketView
3 4 (0.33%) Magento
4 2 (0.16%) Quorum
5 1 (0.082%) Adobe Campaign
5 1 (0.082%) Oracle BPM
Cloud Services
1 100 (8.18%) Amazon AWS
2 76 (6.22%) npm
3 39 (3.19%) Microsoft Azure
4 31 (2.54%) SaaS
5 26 (2.13%) GitHub
6 25 (2.05%) PaaS
7 21 (1.72%) IaaS
8 18 (1.47%) Serverless
9 14 (1.15%) Google Cloud Platform
10 12 (0.98%) Heroku
11 7 (0.57%) Slack
12 6 (0.49%) Yarn
13 5 (0.41%) Amazon EC2
14 4 (0.33%) Amazon CloudWatch
14 4 (0.33%) Amazon Kinesis
14 4 (0.33%) Amazon S3
14 4 (0.33%) AWS Lambda
14 4 (0.33%) Google Analytics
15 3 (0.25%) OpenShift
15 3 (0.25%) Trello
Communications & Networking
1 20 (1.64%) HTTP
2 9 (0.74%) Internet
3 8 (0.65%) SMS
4 6 (0.49%) Skype
5 2 (0.16%) Ethernet
5 2 (0.16%) OpenVPN
6 1 (0.082%) Intranet
6 1 (0.082%) TCP/IP
6 1 (0.082%) Unified Communications
6 1 (0.082%) VPLS
Database & Business Intelligence
1 78 (6.38%) SQL Server
2 66 (5.40%) NoSQL
3 61 (4.99%) MongoDB
4 48 (3.93%) PostgreSQL
5 39 (3.19%) Relational Database
6 34 (2.78%) MySQL
7 32 (2.62%) Amazon DynamoDB
8 30 (2.45%) Redis
9 23 (1.88%) Big Data
10 19 (1.55%) OLAP
11 17 (1.39%) SQL Server Reporting Services
12 13 (1.06%) SQL Server 2008
13 12 (0.98%) SQL Server Integration Services
14 11 (0.90%) Apache Cassandra
14 11 (0.90%) RDBMS
15 9 (0.74%) Blockchain
15 9 (0.74%) SQL Server Analysis Services
16 8 (0.65%) Power BI
17 7 (0.57%) Oracle Database
17 7 (0.57%) Oracle Database 12c
Development Applications
1 239 (19.56%) Git (software)
2 130 (10.64%) webpack
3 101 (8.27%) Jenkins
4 88 (7.20%) Jasmine
5 81 (6.63%) gulp
6 71 (5.81%) Grunt
7 70 (5.73%) Mocha
8 54 (4.42%) Babel
8 54 (4.42%) Karma Test Runner
9 51 (4.17%) Selenium
10 50 (4.09%) Cucumber
11 45 (3.68%) JIRA
12 33 (2.70%) Subversion
13 32 (2.62%) Maven
14 23 (1.88%) WebDriver
15 22 (1.80%) NUnit
15 22 (1.80%) PhantomJS
16 20 (1.64%) JUnit
16 20 (1.64%) Protractor
16 20 (1.64%) Visual Studio
General
1 217 (17.76%) Finance
2 159 (13.01%) Banking
3 104 (8.51%) Front Office
4 76 (6.22%) Investment Banking
5 38 (3.11%) Retail
6 33 (2.70%) Telecoms
7 27 (2.21%) Law
8 24 (1.96%) Marketing
9 22 (1.80%) Games
9 22 (1.80%) Publishing
10 16 (1.31%) Legal
11 12 (0.98%) Back Office
12 8 (0.65%) Electronics
13 5 (0.41%) Advertising
13 5 (0.41%) Manufacturing
14 4 (0.33%) Financial Institution
14 4 (0.33%) International Banking
14 4 (0.33%) Retail Banking
15 2 (0.16%) Automotive
15 2 (0.16%) Prime Brokerage
Libraries, Frameworks & Software Standards
1 747 (61.13%) HTML
2 678 (55.48%) CSS
3 598 (48.94%) React
4 566 (46.32%) AngularJS
5 484 (39.61%) Node.js
6 456 (37.32%) HTML5
7 287 (23.49%) CSS3
8 193 (15.79%) RESTful
9 184 (15.06%) Sass
10 170 (13.91%) Redux
11 153 (12.52%) jQuery
12 143 (11.70%) .NET
13 114 (9.33%) LESS
14 110 (9.00%) REST
15 102 (8.35%) Web Services
16 84 (6.87%) Twitter Bootstrap
17 76 (6.22%) Vue (Vue.js)
18 74 (6.06%) JSON
19 61 (4.99%) Spring
19 61 (4.99%) XML
Miscellaneous
1 127 (10.39%) User Experience
2 110 (9.00%) Greenfield Project
3 85 (6.96%) Fintech
4 47 (3.85%) Foreign Exchange (FX)
5 45 (3.68%) Analytical Skills
6 37 (3.03%) Derivative
7 35 (2.86%) Fixed Income
8 34 (2.78%) Equity Derivative
9 26 (2.13%) Mobile App
10 24 (1.96%) Computer Science
11 19 (1.55%) Hedge funds
12 16 (1.31%) Market Risk
13 15 (1.23%) Video on Demand
14 14 (1.15%) Equities
14 14 (1.15%) Online Banking
15 12 (0.98%) Data Structures
16 11 (0.90%) Virtual Team
17 9 (0.74%) Algorithms
17 9 (0.74%) Video\Live Streaming
18 8 (0.65%) iPad
Operating Systems
1 48 (3.93%) Linux
2 18 (1.47%) Apple iOS
3 16 (1.31%) Unix
4 15 (1.23%) Android
5 8 (0.65%) Windows
6 6 (0.49%) Mac OS
7 2 (0.16%) Mac OS X
8 1 (0.082%) VMS
8 1 (0.082%) Windows Server
Processes & Methodologies
1 596 (48.77%) Agile Software Development
2 442 (36.17%) TDD
3 313 (25.61%) Front End Development
4 221 (18.09%) BDD
5 173 (14.16%) OO
6 151 (12.36%) Continuous Integration
7 135 (11.05%) Web Development
8 125 (10.23%) Test Automation
9 115 (9.41%) Pair Programming
10 114 (9.33%) Scrum
11 101 (8.27%) DevOps
12 100 (8.18%) Software Engineering
13 99 (8.10%) E-Commerce
13 99 (8.10%) Microservices
13 99 (8.10%) MVC
14 86 (7.04%) Unit Testing
15 72 (5.89%) Continuous Improvement
16 69 (5.65%) SDLC
17 60 (4.91%) Open Source
18 59 (4.83%) Responsive Web Design
Programming Languages
1 1,222 (100.00%) JavaScript
2 263 (21.52%) ES6
3 240 (19.64%) Java
4 194 (15.88%) C#
5 128 (10.47%) SQL
5 128 (10.47%) TypeScript
6 62 (5.07%) Python
7 36 (2.95%) ES7
8 31 (2.54%) Ruby
9 25 (2.05%) PHP
10 23 (1.88%) Go
11 13 (1.06%) GraphQL
11 13 (1.06%) Scala
12 8 (0.65%) T-SQL
13 7 (0.57%) C
13 7 (0.57%) VB.NET
14 6 (0.49%) Apple Swift
14 6 (0.49%) Data Analysis Expressions (DAX)
14 6 (0.49%) MUMPS
14 6 (0.49%) PowerShell
Qualifications
1 29 (2.37%) Degree
2 13 (1.06%) Security Cleared
3 9 (0.74%) Computer Science Degree
3 9 (0.74%) SC Cleared
4 3 (0.25%) CTC Cleared
5 1 (0.082%) BPSS Clearance
5 1 (0.082%) DV Cleared
Quality Assurance & Compliance
1 18 (1.47%) QA
2 13 (1.06%) WCAG
3 8 (0.65%) ISO/IEC 27001
4 4 (0.33%) WAI
5 2 (0.16%) GDPR
System Software
1 135 (11.05%) Docker
2 15 (1.23%) Active Directory
3 3 (0.25%) Varnish
4 2 (0.16%) Squid
4 2 (0.16%) Virtual Machines
Systems Management
1 34 (2.78%) Ansible
2 29 (2.37%) Kubernetes
3 22 (1.80%) Opscode Chef
4 20 (1.64%) Terraform
5 6 (0.49%) Business Desktop Deployment
6 5 (0.41%) ITRS Geneos
7 3 (0.25%) Puppet
8 1 (0.082%) Grafana
8 1 (0.082%) Kibana
8 1 (0.082%) logstash
8 1 (0.082%) Prometheus
Vendors
1 50 (4.09%) Microsoft
2 31 (2.54%) Google
3 29 (2.37%) Oracle
4 24 (1.96%) Apigee
5 22 (1.80%) Splunk
6 17 (1.39%) Adobe
7 16 (1.31%) Salesforce.com
8 11 (0.90%) ServiceNow
9 9 (0.74%) Demandware
9 9 (0.74%) ION Trading
10 8 (0.65%) Atlassian
10 8 (0.65%) Sybase
11 6 (0.49%) AppDynamics
11 6 (0.49%) Apple
11 6 (0.49%) Cisco
11 6 (0.49%) IBM
12 5 (0.41%) ATG
12 5 (0.41%) Cypress Semiconductor
12 5 (0.41%) hybris
12 5 (0.41%) SAP