The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for JavaScript skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited JavaScript over the 3 months to 27 June 2017 with a comparison to the 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 (including ECMAScript)
London / City of London
3 months to
27 Jun 2017
Same period 2016 Same period 2015
Rank 8 8 12
Rank change year-on-year 0 +4  
Contract jobs citing JavaScript 453 445 542
As % of all contract IT jobs advertised in the City of London 13.71% 13.14% 9.45%
As % of the Programming Languages category 26.71% 27.13% 21.93%
Number of daily rates quoted 379 392 422
Median daily rate £500 £450 £425
Median daily rate % change year-on-year +11.11% +5.88%  
90% offered a daily rate of more than £350 £300 £275
10% offered a daily rate of more than £625 £575 £600
UK excluding London median daily rate £375 £363 £350
% change year-on-year +3.44% +3.57%  
Number of hourly rates quoted 0 0 6
Median hourly rate - - £21.97
UK excluding London median hourly rate £43.45 £37.50 £39.78
% change year-on-year +15.85% -5.71%  

JavaScript is in the programming language skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for programming language skills.

Contract Programming Language Skills
City of London
Contract job vacancies with a requirement for programming language skills 1696 1640 2471
As % of all contract IT job vacancies advertised in the City of London 51.33% 48.42% 43.06%
Number of daily rates quoted 1361 1401 2034
Median daily rate £513 £475 £470
Median daily rate % change year-on-year +7.89% +1.06%  
90% offered a daily rate of more than £375 £325 £320
10% offered a daily rate of more than £650 £625 £625
UK excluding London median daily rate £400 £375 £350
% change year-on-year +6.66% +7.14%  
Number of hourly rates quoted 4 4 22
Median hourly rate £21.50 £53.00 £24.23
Median hourly rate % change year-on-year -59.43% +118.73%  
90% offered a hourly rate of more than £16.25 £19.00 £19.72
10% offered a hourly rate of more than £31.25 £80.00 £54.00
UK excluding London median hourly rate £42.50 £37.50 £37.00
% change year-on-year +13.33% +1.35%  

JavaScript
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London citing JavaScript as a proportion of all contract or permanent IT jobs with a match in the Programming Languages category.

Job vacancy trend for JavaScript in the City of London

JavaScript
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 in the City of London.

Contractor daily rate trend for JavaScript in the City of London

JavaScript
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing JavaScript in the City of London over the 3 months to 27 June 2017.

Contractor daily rate histogram for JavaScript in the City of London

JavaScript
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 in the City of London.

Contractor hourly rate trend for JavaScript in the City of London

For the 6 months to 27 June 2017, IT contractor jobs citing JavaScript also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the City of London region with a requirement for JavaScript.

1 503 (61.64%) HTML
2 455 (55.76%) CSS
3 380 (46.57%) Agile Software Development
4 311 (38.11%) AngularJS
5 258 (31.62%) TDD
6 251 (30.76%) React
7 240 (29.41%) HTML5
8 234 (28.68%) Java
9 220 (26.96%) Node.js
10 180 (22.06%) Front End Development
11 169 (20.71%) Finance
12 165 (20.22%) C#
13 157 (19.24%) jQuery
14 149 (18.26%) MVC
15 146 (17.89%) BDD
16 145 (17.77%) SQL
17 144 (17.65%) .NET
18 141 (17.28%) Banking
19 133 (16.30%) CSS3
20 131 (16.05%) Git (software)
21 123 (15.07%) Web Development
22 122 (14.95%) Scrum
23 103 (12.62%) OO
24 100 (12.25%) Web Services
25 95 (11.64%) User Experience
26 94 (11.52%) RESTful
27 91 (11.15%) Test Automation
28 86 (10.54%) Continuous Integration
29 85 (10.42%) ASP.NET
29 85 (10.42%) Sass

JavaScript
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 27 (3.31%) Apache
2 23 (2.82%) Elasticsearch
3 21 (2.57%) CMS
4 19 (2.33%) Confluence
5 16 (1.96%) Tomcat
6 15 (1.84%) SharePoint
7 12 (1.47%) IIS
8 11 (1.35%) Adobe Experience Manager
9 10 (1.23%) WordPress
10 9 (1.10%) Apache Spark
10 9 (1.10%) nginx
11 8 (0.98%) Drupal
11 8 (0.98%) JBoss
11 8 (0.98%) WebSphere
12 7 (0.86%) Umbraco
12 7 (0.86%) WebLogic
13 6 (0.74%) Apache Solr
13 6 (0.74%) Mule
14 5 (0.61%) NServiceBus
14 5 (0.61%) Sitecore CMS
Applications
1 13 (1.59%) Photoshop
2 6 (0.74%) Adobe Creative Suite
3 5 (0.61%) Adobe Illustrator
4 4 (0.49%) Microsoft Office
5 3 (0.37%) Microsoft Excel
5 3 (0.37%) OmniGraffle
6 2 (0.25%) InVision
6 2 (0.25%) UXPin
7 1 (0.12%) Adobe Captivate
7 1 (0.12%) HipChat
7 1 (0.12%) InfoPath
7 1 (0.12%) MS Visio
Business Applications
1 22 (2.70%) Dynamics CRM
2 8 (0.98%) Payment Gateway
3 6 (0.74%) Magento
4 5 (0.61%) Eloqua
5 4 (0.49%) ION MarketView
6 3 (0.37%) SAP Hybris
7 2 (0.25%) SAP CRM
8 1 (0.12%) NetSuite
8 1 (0.12%) osCommerce
8 1 (0.12%) RMDS
8 1 (0.12%) SessionCam
8 1 (0.12%) Shopify
8 1 (0.12%) Social Studio
Cloud Services
1 83 (10.17%) Amazon AWS
2 29 (3.55%) Microsoft Azure
3 19 (2.33%) GitHub
4 14 (1.72%) SaaS
5 11 (1.35%) AWS CloudFormation
6 7 (0.86%) Cloud Computing
6 7 (0.86%) Google Analytics
7 6 (0.74%) Google Cloud Platform
8 4 (0.49%) AWS Lambda
8 4 (0.49%) Heroku
8 4 (0.49%) Slack
9 3 (0.37%) Adobe Analytics
9 3 (0.37%) Amazon EC2
9 3 (0.37%) Bluemix
9 3 (0.37%) Dynamics 365
9 3 (0.37%) IBM Cloud
10 2 (0.25%) Amazon SQS
10 2 (0.25%) Google App Engine
10 2 (0.25%) Office 365
10 2 (0.25%) PaaS
Communications & Networking
1 23 (2.82%) HTTP
2 16 (1.96%) Internet
3 5 (0.61%) TCP/IP
4 4 (0.49%) SSL
5 3 (0.37%) Intranet
6 2 (0.25%) DNS
6 2 (0.25%) Ethernet
6 2 (0.25%) HTTPS
6 2 (0.25%) SSH
7 1 (0.12%) Firewall
7 1 (0.12%) LAN
7 1 (0.12%) Network Security
7 1 (0.12%) RTP
7 1 (0.12%) RTSP
7 1 (0.12%) SNMP
7 1 (0.12%) X.509
Database & Business Intelligence
1 71 (8.70%) SQL Server
2 68 (8.33%) MongoDB
3 59 (7.23%) NoSQL
4 55 (6.74%) MySQL
5 26 (3.19%) Relational Database
6 21 (2.57%) SQL Server 2008
7 20 (2.45%) Apache Cassandra
8 17 (2.08%) PostgreSQL
9 14 (1.72%) SQL Server Integration Services
10 12 (1.47%) SQL Server 2012
11 11 (1.35%) Hadoop
12 10 (1.23%) Big Data
13 8 (0.98%) RDBMS
14 7 (0.86%) SQL Server 2016
15 6 (0.74%) Redis
15 6 (0.74%) SQL Server Reporting Services
16 5 (0.61%) CouchDB
16 5 (0.61%) KDB
17 4 (0.49%) Data Warehouse
18 3 (0.37%) GIS
Development Applications
1 131 (16.05%) Git (software)
2 68 (8.33%) gulp
3 63 (7.72%) Jasmine
4 62 (7.60%) Jenkins
5 54 (6.62%) Grunt
6 50 (6.13%) Selenium
7 44 (5.39%) Cucumber
8 42 (5.15%) JIRA
9 40 (4.90%) webpack
10 31 (3.80%) Visual Studio
11 30 (3.68%) Mocha
12 25 (3.06%) Maven
13 23 (2.82%) IntelliJ
14 22 (2.70%) JUnit
15 21 (2.57%) Bower
15 21 (2.57%) Team Foundation Server
16 20 (2.45%) Subversion
16 20 (2.45%) TeamCity
17 14 (1.72%) Karma Test Runner
18 13 (1.59%) Mockito
General
1 169 (20.71%) Finance
2 141 (17.28%) Banking
3 59 (7.23%) Investment Banking
4 50 (6.13%) Front Office
5 31 (3.80%) Retail
6 29 (3.55%) Marketing
7 20 (2.45%) Advertising
8 15 (1.84%) Games
9 13 (1.59%) Law
10 10 (1.23%) Publishing
11 8 (0.98%) Telecoms
12 7 (0.86%) Retail Banking
13 5 (0.61%) Digital Economy
14 3 (0.37%) Automotive
14 3 (0.37%) Back Office
15 1 (0.12%) Electronics
15 1 (0.12%) Legal
15 1 (0.12%) Multimedia
15 1 (0.12%) Pharmaceutical
15 1 (0.12%) Private Banking
Job Titles
1 671 (82.23%) Developer
2 165 (20.22%) JavaScript Developer
3 140 (17.16%) Front End Developer (Client-Side Developer)
4 117 (14.34%) Full Stack Developer
5 115 (14.09%) Senior Developer
6 107 (13.11%) Java Developer
7 60 (7.35%) Angular Developer
8 59 (7.23%) .NET Developer
9 51 (6.25%) HTML Developer
10 47 (5.76%) Node.js Developer
11 46 (5.64%) Web Developer
12 45 (5.51%) C# Developer
13 40 (4.90%) UI Developer
14 32 (3.92%) Python Developer
15 30 (3.68%) Senior JavaScript Developer
16 29 (3.55%) HTML CSS Developer
17 21 (2.57%) C# .NET Developer
17 21 (2.57%) JavaScript Engineer
17 21 (2.57%) Lead Developer
18 20 (2.45%) Senior Java Developer
Libraries, Frameworks & Software Standards
1 503 (61.64%) HTML
2 455 (55.76%) CSS
3 311 (38.11%) AngularJS
4 251 (30.76%) React
5 240 (29.41%) HTML5
6 220 (26.96%) Node.js
7 157 (19.24%) jQuery
8 144 (17.65%) .NET
9 133 (16.30%) CSS3
10 100 (12.25%) Web Services
11 94 (11.52%) RESTful
12 85 (10.42%) ASP.NET
12 85 (10.42%) Sass
13 80 (9.80%) Redux
14 75 (9.19%) Spring
15 70 (8.58%) REST
16 65 (7.97%) XML
17 54 (6.62%) Ajax
18 50 (6.13%) Twitter Bootstrap
19 49 (6.00%) JSON
Miscellaneous
1 95 (11.64%) User Experience
2 58 (7.11%) Greenfield Project
3 37 (4.53%) Fintech
4 36 (4.41%) Foreign Exchange (FX)
5 31 (3.80%) NHS
6 29 (3.55%) Mobile App
7 26 (3.19%) Computer Science
8 25 (3.06%) Analytical Skills
9 17 (2.08%) Data Structures
10 16 (1.96%) Fixed Income
10 16 (1.96%) Hedge funds
11 13 (1.59%) Derivative
12 10 (1.23%) Equities
12 10 (1.23%) iPad
13 9 (1.10%) RIA
14 7 (0.86%) Enterprise Software
15 6 (0.74%) Algorithms
16 5 (0.61%) Equity Derivative
16 5 (0.61%) Photography
17 3 (0.37%) Online Banking
Operating Systems
1 67 (8.21%) Linux
2 30 (3.68%) Unix
3 27 (3.31%) Apple iOS
3 27 (3.31%) Windows
4 20 (2.45%) Android
5 5 (0.61%) Windows 10
6 4 (0.49%) CentOS
6 4 (0.49%) Red Hat Enterprise Linux
6 4 (0.49%) Windows Server
7 2 (0.25%) CoreOS
7 2 (0.25%) Mac OS X
8 1 (0.12%) Ubuntu
8 1 (0.12%) Windows Server 2008
8 1 (0.12%) Windows Server 2012
Processes & Methodologies
1 380 (46.57%) Agile Software Development
2 258 (31.62%) TDD
3 180 (22.06%) Front End Development
4 149 (18.26%) MVC
5 146 (17.89%) BDD
6 123 (15.07%) Web Development
7 122 (14.95%) Scrum
8 103 (12.62%) OO
9 91 (11.15%) Test Automation
10 86 (10.54%) Continuous Integration
11 71 (8.70%) E-Commerce
12 64 (7.84%) Software Engineering
13 57 (6.99%) Unit Testing
14 56 (6.86%) DevOps
15 54 (6.62%) Kanban
16 50 (6.13%) Pair Programming
17 47 (5.76%) SOLID
18 46 (5.64%) Microservices
19 43 (5.27%) SOA
20 41 (5.02%) Open Source
Programming Languages
1 234 (28.68%) Java
2 165 (20.22%) C#
3 145 (17.77%) SQL
4 71 (8.70%) Python
5 67 (8.21%) ES6
6 54 (6.62%) PHP
7 47 (5.76%) Scala
8 34 (4.17%) TypeScript
9 29 (3.55%) Ruby
10 22 (2.70%) Groovy
11 18 (2.21%) Shell Script
12 14 (1.72%) C++
12 14 (1.72%) T-SQL
13 13 (1.59%) PL/SQL
14 11 (1.35%) PowerShell
15 8 (0.98%) Apple Swift
15 8 (0.98%) Objective-C
16 7 (0.86%) Bash Shell
17 6 (0.74%) C
18 5 (0.61%) VB
Qualifications
1 31 (3.80%) Degree
2 19 (2.33%) Computer Science Degree
3 10 (1.23%) Security Cleared
4 8 (0.98%) SC Cleared
5 3 (0.37%) PMI Certification
5 3 (0.37%) PMP
6 2 (0.25%) DV Cleared
6 2 (0.25%) MCP
6 2 (0.25%) Microsoft Certification
6 2 (0.25%) OCPJP
7 1 (0.12%) BPSS Clearance
7 1 (0.12%) Master's Degree
7 1 (0.12%) Numerate Degree
7 1 (0.12%) PhD
Quality Assurance & Compliance
1 54 (6.62%) QA
2 8 (0.98%) MiFID
3 6 (0.74%) ISO/IEC 27001
4 2 (0.25%) Data Quality
4 2 (0.25%) PMO
5 1 (0.12%) SLA
System Software
1 43 (5.27%) Docker
2 5 (0.61%) HDFS
3 1 (0.12%) Apache Flume
3 1 (0.12%) Apache ZooKeeper
3 1 (0.12%) Varnish
Systems Management
1 17 (2.08%) Kubernetes
2 9 (1.10%) Opscode Chef
3 7 (0.86%) Ansible
3 7 (0.86%) Puppet
3 7 (0.86%) Terraform
4 6 (0.74%) Mesos
5 4 (0.49%) logstash
6 3 (0.37%) Marathon
7 2 (0.25%) Kibana
7 2 (0.25%) Thomson Reuters DACS
8 1 (0.12%) BladeLogic
8 1 (0.12%) CA Service Virtualization
8 1 (0.12%) Control-M
8 1 (0.12%) Grafana
Vendors
1 56 (6.86%) Microsoft
2 32 (3.92%) Oracle
3 26 (3.19%) Google
4 20 (2.45%) New Relic
5 19 (2.33%) Adobe
6 7 (0.86%) Salesforce.com
6 7 (0.86%) Sitecore
6 7 (0.86%) Twitter
7 6 (0.74%) IBM
7 6 (0.74%) Red Hat
8 5 (0.61%) Tableau
8 5 (0.61%) Telerik
9 4 (0.49%) hybris
9 4 (0.49%) ION Trading
9 4 (0.49%) Marketo
9 4 (0.49%) SAP
10 3 (0.37%) Atlassian
10 3 (0.37%) Murex
10 3 (0.37%) Redback
10 3 (0.37%) Xamarin
City, London
Roc Search
Posted: 8 hours ago
City, London
Spectrum IT Recruitment (South) Ltd
Posted: 2 hours ago
City, London
Ashdown IT
Rate: £450 - £500 per day
Posted: Yesterday
City, London
ANSON MCCADE
Rate: UKP 550 per day
Posted: Yesterday
City, London
ANSON MCCADE
Rate: UKP 550 per day
Posted: Yesterday
City, London
TEKsystems
Rate: £650 - £700 per day
Posted: 23 hours ago
City, London
Rullion
Posted: Yesterday
City, London
Roc Search
Posted: 2 hours ago
City, London
SanRidge Ltd
Posted: Yesterday
City, London
Lawrence Harvey
Rate: £400 - £500 per day
Posted: Yesterday
City, London
TEKsystems
Rate: £575 - £650 per day
Posted: 3 days ago
City, London
Premier IT
Rate: £400 - £450 per day
Posted: 5 days ago
City, London
ARC IT Recruitment Ltd
Rate: £350 per day
Posted: 4 days ago
City, London
Venturi
Rate: £450 - £475 per day
Posted: 4 days ago
City, London
Oscar
Rate: £300 - £340 per day
Posted: 4 days ago
City, London
Nakama
Rate: From £400 to £440 per day Weekly pay through Nakama
Posted: 6 days ago
City of London
TDA Group
Rate: £80000 - £100000 per annum + Bonus
Posted: 4 days ago
City, London
ANSON MCCADE
Rate: UKP 600 per day
Posted: 5 days ago
City, London
EPAM Systems
Rate: From £200 to £250 per day
Posted: Yesterday
City, London
Montash
Rate: £500 - £600 per day
Posted: 6 days ago
City, London
Pioneer Search
Rate: £450 - £500 per day
Posted: 6 days ago
City, London
McGregor Boyall
Rate: £500 - £700 per annum
Posted: 5 days ago
City, London
Haysfm
Rate: £400.00 - £450.00 per day
Posted: 5 days ago
City, London
EPAM Systems
Rate: From £450 to £500 per day
Posted: 6 days ago
City, London
Social Superstore
Rate: From £250 to £550 per day
Posted: 6 days ago
City, London
Cadence Resourcing
Rate: On Application
Posted: 4 days ago
City, London
Cadence Resourcing
Rate: £450 - £500 per day
Posted: 6 days ago
City, London
EPAM Systems
Rate: From £460 to £461 per day or £90k perm
Posted: 21 days ago