Period
to 24 June 2018

The median contractor rate for a JavaScript Developer was £500 per day in advertised job vacancies in London during the 6 months to 24 June 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
24 Jun 2018
Same period 2017 Same period 2016
Rank 105 97 89
Rank change year-on-year -8 -8 +28
Contract jobs requiring a JavaScript Developer 1,171 1,089 1,181
As % of all contract IT jobs advertised in London 2.60% 2.72% 2.69%
As % of the Job Titles category 2.74% 2.86% 2.83%
Number of daily rates quoted 1,013 870 993
London median daily rate £500 £478 £450
Median daily rate % change year-on-year +4.66% +6.17% +11.80%
10th Percentile £363 £350 £313
90th Percentile £650 £638 £588
England median daily rate £450 £438 £403
% change year-on-year +2.86% +8.56% +7.47%
Number of hourly rates quoted 3 1 1
London median hourly rate £47.50 £30.00 £27.27
Median hourly rate % change year-on-year +58.33% +10.03% +38.30%
10th Percentile £34.83 £30.00 £25.75
90th Percentile £48.75 £30.00 £28.78
England median hourly rate £47.50 £42.75 £24.90
% change year-on-year +11.11% +71.67% +13.19%

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 42,753 38,072 41,779
% of contract IT jobs with a recognized job title 94.79% 95.07% 95.23%
Number of daily rates quoted 30,917 27,084 30,116
London median daily rate £500 £475 £450
Median daily rate % change year-on-year +5.26% +5.56% +2.86%
10th Percentile £313 £305 £282
90th Percentile £675 £650 £638
England median daily rate £450 £438 £425
% change year-on-year +2.86% +2.94% +6.25%
Number of hourly rates quoted 661 496 523
London median hourly rate £21.50 £22.00 £19.00
Median hourly rate % change year-on-year -2.27% +15.79% -5.00%
10th Percentile £13.00 £12.50 £10.53
90th Percentile £50.00 £51.63 £46.95
England median hourly rate £18.52 £18.69 £19.61
% change year-on-year -0.92% -4.68% +12.06%

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 24 June 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
Contractor Hourly Rate Histogram in London

The hourly rate distribution of IT jobs citing JavaScript Developer in London over the 6 months to 24 June 2018.

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 24 June 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 -20 232 £500 - 74
South London +3 60 £475 +15.15% 9
West London +2 46 £511 +20.29% 39
East London +17 43 £438 -32.69% 13
North London -2 1 £403 +71.28% 2
JavaScript Developer
England

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

For the 6 months to 24 June 2018, 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 1,171 (100.00%) JavaScript
2 668 (57.05%) HTML
3 645 (55.08%) CSS
4 620 (52.95%) React
5 560 (47.82%) Agile Software Development
6 497 (42.44%) Node.js
6 497 (42.44%) AngularJS
7 394 (33.65%) HTML5
8 341 (29.12%) TDD
9 305 (26.05%) Front End Development
10 253 (21.61%) Redux
11 249 (21.26%) ES6
12 238 (20.32%) Finance
13 236 (20.15%) Sass
14 227 (19.39%) CSS3
15 193 (16.48%) Git (software)
16 180 (15.37%) Java
17 167 (14.26%) Web Development
18 165 (14.09%) jQuery
19 162 (13.83%) C#
20 159 (13.58%) Banking
21 158 (13.49%) User Experience
22 157 (13.41%) OO
23 156 (13.32%) webpack
24 155 (13.24%) .NET
25 147 (12.55%) REST
26 141 (12.04%) RESTful
27 139 (11.87%) Microservices
27 139 (11.87%) Greenfield Project
28 134 (11.44%) BDD

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 33 (2.82%) CMS
2 26 (2.22%) Elasticsearch
3 14 (1.20%) Apache
4 11 (0.94%) Adobe Experience Manager
5 8 (0.68%) Confluence
5 8 (0.68%) Tomcat
5 8 (0.68%) WordPress
6 7 (0.60%) Apache Spark
6 7 (0.60%) Drupal
7 5 (0.43%) nginx
7 5 (0.43%) SharePoint
8 4 (0.34%) Mongoose
9 3 (0.26%) Apache Solr
9 3 (0.26%) OpenStack
9 3 (0.26%) Oracle Workflow
9 3 (0.26%) Sitecore CMS
9 3 (0.26%) Umbraco
9 3 (0.26%) WebSphere
10 2 (0.17%) Ethereum
10 2 (0.17%) SharePoint 2010
Applications
1 9 (0.77%) Photoshop
2 3 (0.26%) Acrobat
3 1 (0.085%) Chatbot
3 1 (0.085%) Microsoft Excel
Business Applications
1 20 (1.71%) ION MarketView
2 6 (0.51%) Magento
3 2 (0.17%) Dynamics NAV
3 2 (0.17%) Payment Gateway
4 1 (0.085%) Eloqua
4 1 (0.085%) RMDS
4 1 (0.085%) SAP Oil and Gas
4 1 (0.085%) SDL Web 8
4 1 (0.085%) Shopify
4 1 (0.085%) Tesseract
Cloud Services
1 99 (8.45%) Amazon AWS
2 71 (6.06%) Microsoft Azure
3 69 (5.89%) npm
4 40 (3.42%) GitHub
5 39 (3.33%) Serverless
6 31 (2.65%) PaaS
7 28 (2.39%) SaaS
8 17 (1.45%) AWS Lambda
9 15 (1.28%) Amazon S3
10 13 (1.11%) IaaS
11 11 (0.94%) Heroku
12 10 (0.85%) Amazon EC2
12 10 (0.85%) Amazon SQS
13 9 (0.77%) Google Cloud Platform
14 8 (0.68%) Yarn
15 5 (0.43%) Cloud Computing
16 4 (0.34%) Amazon Kinesis
16 4 (0.34%) Google Analytics
16 4 (0.34%) Route 53
17 3 (0.26%) Firebase
Communications & Networking
1 41 (3.50%) HTTP
2 12 (1.02%) Internet
3 10 (0.85%) RTMP
4 2 (0.17%) OpenVPN
4 2 (0.17%) SMS
5 1 (0.085%) Ethernet
5 1 (0.085%) HTTPS
5 1 (0.085%) MPLS
5 1 (0.085%) SAN
5 1 (0.085%) SSL
5 1 (0.085%) WAN
5 1 (0.085%) Wi-Fi
Database & Business Intelligence
1 73 (6.23%) SQL Server
2 69 (5.89%) MongoDB
3 41 (3.50%) MySQL
4 37 (3.16%) PostgreSQL
5 36 (3.07%) NoSQL
6 34 (2.90%) Relational Database
7 22 (1.88%) Big Data
8 20 (1.71%) Redis
9 19 (1.62%) Amazon DynamoDB
10 18 (1.54%) Cosmos DB
11 14 (1.20%) Blockchain
12 9 (0.77%) Azure SQL Database
12 9 (0.77%) SQL Server Integration Services
13 8 (0.68%) Hadoop
13 8 (0.68%) HBase
13 8 (0.68%) SQL Server 2012
14 7 (0.60%) SQL Server 2016
15 6 (0.51%) Oracle Database
15 6 (0.51%) Oracle Database 12c
15 6 (0.51%) SQL Server Reporting Services
Development Applications
1 193 (16.48%) Git (software)
2 156 (13.32%) webpack
3 117 (9.99%) gulp
4 92 (7.86%) Grunt
5 90 (7.69%) Jasmine
6 75 (6.40%) Jenkins
7 71 (6.06%) Mocha
8 66 (5.64%) Babel
9 64 (5.47%) Karma Test Runner
10 61 (5.21%) Selenium
11 51 (4.36%) JIRA
12 43 (3.67%) Subversion
13 37 (3.16%) Cucumber
14 29 (2.48%) Visual Studio
15 25 (2.13%) WebDriver
16 24 (2.05%) Protractor
17 23 (1.96%) Visual Studio Team System
18 16 (1.37%) Mercurial
18 16 (1.37%) Sublime Text
18 16 (1.37%) TeamCity
General
1 238 (20.32%) Finance
2 159 (13.58%) Banking
3 98 (8.37%) Front Office
4 58 (4.95%) Investment Banking
5 55 (4.70%) Retail
6 28 (2.39%) Law
7 24 (2.05%) Telecoms
8 21 (1.79%) Games
9 12 (1.02%) Marketing
10 10 (0.85%) Advertising
10 10 (0.85%) Financial Institution
11 8 (0.68%) Legal
12 7 (0.60%) Back Office
13 4 (0.34%) Music Industry
13 4 (0.34%) Publishing
14 3 (0.26%) Automotive
14 3 (0.26%) Prime Brokerage
15 2 (0.17%) French Language
15 2 (0.17%) Manufacturing
15 2 (0.17%) Retail Banking
Libraries, Frameworks & Software Standards
1 668 (57.05%) HTML
2 645 (55.08%) CSS
3 620 (52.95%) React
4 497 (42.44%) AngularJS
4 497 (42.44%) Node.js
5 394 (33.65%) HTML5
6 253 (21.61%) Redux
7 236 (20.15%) Sass
8 227 (19.39%) CSS3
9 165 (14.09%) jQuery
10 155 (13.24%) .NET
11 147 (12.55%) REST
12 141 (12.04%) RESTful
13 107 (9.14%) LESS
14 95 (8.11%) ASP.NET
15 86 (7.34%) Twitter Bootstrap
16 83 (7.09%) Express
17 77 (6.58%) ASP.NET Web API
18 76 (6.49%) React Native
19 73 (6.23%) JSON
Miscellaneous
1 158 (13.49%) User Experience
2 139 (11.87%) Greenfield Project
3 89 (7.60%) Fintech
4 68 (5.81%) Mobile App
5 45 (3.84%) Fixed Income
6 39 (3.33%) Foreign Exchange (FX)
7 37 (3.16%) Computer Science
8 25 (2.13%) Analytical Skills
8 25 (2.13%) Derivative
9 23 (1.96%) Algorithms
10 20 (1.71%) Data Structures
11 19 (1.62%) Equity Derivative
12 16 (1.37%) Hedge funds
12 16 (1.37%) Online Banking
13 14 (1.20%) Blog
14 13 (1.11%) Enterprise Software
15 11 (0.94%) Equities
16 7 (0.60%) Self-Motivation
16 7 (0.60%) W3C
17 6 (0.51%) Management Information System
Operating Systems
1 64 (5.47%) Linux
2 57 (4.87%) Android
3 42 (3.59%) Apple iOS
4 11 (0.94%) Unix
4 11 (0.94%) Windows
5 1 (0.085%) CentOS
5 1 (0.085%) HPUX
5 1 (0.085%) Mac OS
5 1 (0.085%) Mac OS X
5 1 (0.085%) Solaris
Processes & Methodologies
1 560 (47.82%) Agile Software Development
2 341 (29.12%) TDD
3 305 (26.05%) Front End Development
4 167 (14.26%) Web Development
5 157 (13.41%) OO
6 139 (11.87%) Microservices
7 134 (11.44%) BDD
8 119 (10.16%) DevOps
9 118 (10.08%) Scrum
10 107 (9.14%) MVC
11 99 (8.45%) Continuous Integration
12 97 (8.28%) Software Engineering
13 96 (8.20%) E-Commerce
14 92 (7.86%) Unit Testing
15 83 (7.09%) Test Automation
16 62 (5.29%) Open Source
17 60 (5.12%) Pair Programming
17 60 (5.12%) Problem-Solving
18 59 (5.04%) Responsive Web Design
19 54 (4.61%) SDLC
Programming Languages
1 1,171 (100.00%) JavaScript
2 249 (21.26%) ES6
3 180 (15.37%) Java
4 162 (13.83%) C#
5 133 (11.36%) SQL
6 122 (10.42%) TypeScript
7 70 (5.98%) Python
8 39 (3.33%) ES7
9 33 (2.82%) JSX
10 30 (2.56%) PHP
11 27 (2.31%) Ruby
12 25 (2.13%) Java 8
13 16 (1.37%) Scala
14 13 (1.11%) ES8
14 13 (1.11%) T-SQL
15 12 (1.02%) C++
16 11 (0.94%) Go
17 5 (0.43%) Bash Shell
17 5 (0.43%) PowerShell
18 4 (0.34%) C
Qualifications
1 44 (3.76%) Degree
2 22 (1.88%) Security Cleared
3 21 (1.79%) SC Cleared
4 20 (1.71%) Computer Science Degree
5 5 (0.43%) ITIL Certification
6 3 (0.26%) DV Cleared
7 1 (0.085%) CTC Cleared
Quality Assurance & Compliance
1 18 (1.54%) QA
2 7 (0.60%) GDPR
3 5 (0.43%) Data Quality
3 5 (0.43%) ISO/IEC 27001
4 3 (0.26%) GCP
4 3 (0.26%) Solvency II
5 2 (0.17%) PCI DSS
6 1 (0.085%) SLA
6 1 (0.085%) WAI
6 1 (0.085%) WCAG
System Software
1 96 (8.20%) Docker
2 11 (0.94%) Active Directory
3 5 (0.43%) HDFS
4 2 (0.17%) Squid
4 2 (0.17%) Varnish
5 1 (0.085%) Apache ZooKeeper
5 1 (0.085%) Ceph
5 1 (0.085%) etcd
5 1 (0.085%) Virtual Machines
Systems Management
1 23 (1.96%) Ansible
2 17 (1.45%) Opscode Chef
3 12 (1.02%) Kubernetes
4 10 (0.85%) Terraform
5 7 (0.60%) Puppet
6 6 (0.51%) Kibana
7 5 (0.43%) Single Sign-On
8 2 (0.17%) Business Desktop Deployment
8 2 (0.17%) Consul
8 2 (0.17%) Grafana
8 2 (0.17%) TeamSite
9 1 (0.085%) Docker Swarm
9 1 (0.085%) Graphite
9 1 (0.085%) HAProxy
9 1 (0.085%) PingFederate
9 1 (0.085%) Prometheus
Vendors
1 38 (3.25%) Microsoft
2 24 (2.05%) Google
3 22 (1.88%) Adobe
4 20 (1.71%) ION Trading
5 15 (1.28%) Oracle
6 14 (1.20%) Apigee
7 12 (1.02%) Splunk
8 10 (0.85%) Sybase
9 7 (0.60%) Atlassian
9 7 (0.60%) hybris
10 6 (0.51%) Salesforce.com
11 5 (0.43%) Demandware
11 5 (0.43%) MapR
11 5 (0.43%) ServiceNow
11 5 (0.43%) Tableau
12 4 (0.34%) Capita
12 4 (0.34%) DevExpress
12 4 (0.34%) Sitecore
13 3 (0.26%) Cerner
14 2 (0.17%) Informatica