The following table provides summary statistics for contract job vacancies advertised in London with a requirement for WebSockets skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited WebSockets over the 3 months to 28 March 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.

WebSockets
England / London
3 months to
28 Mar 2017
Same period 2016 Same period 2015
Rank 356 391 403
Rank change year-on-year +35 +12  
Contract jobs citing WebSockets 46 35 9
As % of all contract IT jobs advertised in London 0.24% 0.16% 0.042%
As % of the Libraries, Frameworks & Software Standards category 0.68% 0.49% 0.14%
Number of daily rates quoted 39 32 5
Median daily rate £530 £550 £520
Median daily rate % change year-on-year -3.63% +5.76%  
90% offered a daily rate of more than £425 £500 £493
10% offered a daily rate of more than £605 £650 £527
UK excluding London median daily rate £419 £338 £350
% change year-on-year +24.07% -3.57%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

WebSockets is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in London with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
London
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 6789 7106 6491
As % of all contract IT job vacancies advertised in London 34.82% 31.86% 30.16%
Number of daily rates quoted 5057 5320 4694
Median daily rate £475 £450 £425
Median daily rate % change year-on-year +5.55% +5.88%  
90% offered a daily rate of more than £345 £325 £311
10% offered a daily rate of more than £601 £600 £575
UK excluding London median daily rate £375 £363 £350
% change year-on-year +3.44% +3.57%  
Number of hourly rates quoted 50 27 27
Median hourly rate £47.50 £50.00 £27.37
Median hourly rate % change year-on-year -5.00% +82.68%  
90% offered a hourly rate of more than £17.01 £21.17 £20.00
10% offered a hourly rate of more than £100.00 £55.00 £55.00
UK excluding London median hourly rate £40.50 £38.00 £36.00
% change year-on-year +6.57% +5.55%  

WebSockets
Job Vacancy Trend in London

The job posting trend of jobs advertised in London citing WebSockets as a proportion of all contract or permanent IT jobs with a match in the Libraries, Frameworks & Software Standards category.

Job vacancy trend for WebSockets in London

WebSockets
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for WebSockets in London

WebSockets
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing WebSockets in London over the 3 months to 28 March 2017.

Contractor daily rate histogram for WebSockets in London

WebSockets
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 WebSockets within the London region over the 3 months to 28 March 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
City of London -3 9 £565 -3.82% 3
WebSockets
England

For the 6 months to 28 March 2017, IT contractor jobs citing WebSockets 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 London region with a requirement for WebSockets.

1 90 (79.65%) JavaScript
2 66 (58.41%) AngularJS
3 63 (55.75%) HTML
4 59 (52.21%) HTML5
5 55 (48.67%) React
6 50 (44.25%) Agile Software Development
7 47 (41.59%) Git (software)
8 41 (36.28%) Banking
8 41 (36.28%) CSS
9 37 (32.74%) TDD
9 37 (32.74%) CSS3
10 36 (31.86%) Node.js
11 30 (26.55%) REST
11 30 (26.55%) Finance
12 29 (25.66%) Selenium
12 29 (25.66%) Fintech
13 28 (24.78%) BDD
14 27 (23.89%) SQL
15 26 (23.01%) Java
15 26 (23.01%) NoSQL
16 25 (22.12%) Grunt
16 25 (22.12%) Microservices
17 24 (21.24%) Jasmine
17 24 (21.24%) C#
17 24 (21.24%) ES6
17 24 (21.24%) webpack
18 23 (20.35%) jQuery
19 22 (19.47%) .NET
19 22 (19.47%) Degree
19 22 (19.47%) Maven

WebSockets
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 5 (4.42%) Apache Spark
2 4 (3.54%) NServiceBus
3 1 (0.88%) Apache
3 1 (0.88%) JBoss
3 1 (0.88%) WebLogic
Applications
1 1 (0.88%) MS Excel
Cloud Services
1 18 (15.93%) Microsoft Azure
2 14 (12.39%) GitHub
3 4 (3.54%) Cloud Computing
4 3 (2.65%) Amazon AWS
4 3 (2.65%) Firebase
5 2 (1.77%) Google Play
5 2 (1.77%) Slack
6 1 (0.88%) SaaS
Communications & Networking
1 16 (14.16%) AMQP
2 3 (2.65%) Internet
3 1 (0.88%) HTTP
Database & Business Intelligence
1 26 (23.01%) NoSQL
2 18 (15.93%) SQL Server
3 16 (14.16%) Azure SQL Database
4 13 (11.50%) Relational Database
5 9 (7.96%) Hadoop
6 7 (6.19%) MongoDB
7 5 (4.42%) Apache Cassandra
8 4 (3.54%) Big Data
8 4 (3.54%) Redis
9 3 (2.65%) PostgreSQL
9 3 (2.65%) RDBMS
10 2 (1.77%) KDB
10 2 (1.77%) MySQL
10 2 (1.77%) Neo4j
Development Applications
1 47 (41.59%) Git (software)
2 29 (25.66%) Selenium
3 25 (22.12%) Grunt
4 24 (21.24%) Jasmine
4 24 (21.24%) webpack
5 22 (19.47%) Maven
6 20 (17.70%) Subversion
7 19 (16.81%) SpecFlow
8 17 (15.04%) Mocha
9 15 (13.27%) Sonatype Nexus
9 15 (13.27%) TeamCity
10 14 (12.39%) gulp
11 11 (9.73%) JIRA
12 8 (7.08%) Protractor
13 6 (5.31%) Bower
13 6 (5.31%) JUnit
14 5 (4.42%) Gradle
14 5 (4.42%) Mockito
15 4 (3.54%) Cucumber
16 3 (2.65%) Appium
General
1 41 (36.28%) Banking
2 30 (26.55%) Finance
3 19 (16.81%) Investment Banking
4 9 (7.96%) Front Office
5 3 (2.65%) Back Office
5 3 (2.65%) Games
5 3 (2.65%) Wholesale Banking
6 1 (0.88%) Telecoms
Job Titles
1 88 (77.88%) Developer
2 28 (24.78%) JavaScript Developer
3 26 (23.01%) Angular Developer
4 17 (15.04%) C# Developer
5 15 (13.27%) Senior Developer
6 12 (10.62%) Front End Developer (Client-Side Developer)
7 11 (9.73%) .NET Developer
7 11 (9.73%) C# .NET Developer
7 11 (9.73%) Java Developer
7 11 (9.73%) Web Developer
8 10 (8.85%) ASP.NET Developer
8 10 (8.85%) C# ASP.NET Developer
8 10 (8.85%) HTML Developer
8 10 (8.85%) Node.js Developer
8 10 (8.85%) UI Developer
9 9 (7.96%) Architect
9 9 (7.96%) C# WPF Developer
9 9 (7.96%) Full Stack Developer
9 9 (7.96%) WPF Developer
10 8 (7.08%) Azure Developer
Libraries, Frameworks & Software Standards
1 66 (58.41%) AngularJS
2 63 (55.75%) HTML
3 59 (52.21%) HTML5
4 55 (48.67%) React
5 41 (36.28%) CSS
6 37 (32.74%) CSS3
7 36 (31.86%) Node.js
8 30 (26.55%) REST
9 23 (20.35%) jQuery
10 22 (19.47%) .NET
10 22 (19.47%) Angular 2
10 22 (19.47%) Redux
11 21 (18.58%) ASP.NET
11 21 (18.58%) Reactive Extensions
11 21 (18.58%) SignalR
12 20 (17.70%) ASP.NET Web API
13 17 (15.04%) Chai
13 17 (15.04%) RESTful
14 16 (14.16%) D3.js
14 16 (14.16%) NancyFx
Miscellaneous
1 29 (25.66%) Fintech
2 17 (15.04%) Foreign Exchange (FX)
3 10 (8.85%) User Experience
4 9 (7.96%) Equities
5 8 (7.08%) Computer Science
5 8 (7.08%) Derivative
6 6 (5.31%) Fixed Income
7 4 (3.54%) Mobile App
8 3 (2.65%) Client/Server
8 3 (2.65%) Hedge funds
9 2 (1.77%) Analytical Skills
9 2 (1.77%) Data Structures
9 2 (1.77%) Enterprise Software
9 2 (1.77%) Minimum Viable Product
10 1 (0.88%) Algorithms
10 1 (0.88%) Equity Derivative
10 1 (0.88%) iPad
10 1 (0.88%) iPhone
Operating Systems
1 7 (6.19%) Unix
2 5 (4.42%) Android
2 5 (4.42%) Apple iOS
3 3 (2.65%) Linux
Processes & Methodologies
1 50 (44.25%) Agile Software Development
2 37 (32.74%) TDD
3 28 (24.78%) BDD
4 25 (22.12%) Microservices
5 20 (17.70%) Web Application Development
5 20 (17.70%) Web Development
6 17 (15.04%) Front End Development
7 16 (14.16%) Scrum
8 15 (13.27%) MVVM
9 13 (11.50%) Cross-Browser Compatibility
10 12 (10.62%) Open Source
11 11 (9.73%) OO
12 10 (8.85%) Domain-Driven Design
12 10 (8.85%) E-Commerce
12 10 (8.85%) Responsive Web Design
13 9 (7.96%) B2B
13 9 (7.96%) Concurrent Programming
13 9 (7.96%) Unit Testing
13 9 (7.96%) Visualisation
14 8 (7.08%) Data Visualisation
Programming Languages
1 90 (79.65%) JavaScript
2 27 (23.89%) SQL
3 26 (23.01%) Java
4 24 (21.24%) C#
4 24 (21.24%) ES6
5 13 (11.50%) Scala
6 8 (7.08%) Python
7 7 (6.19%) Shell Script
8 4 (3.54%) Ruby
9 3 (2.65%) Perl
9 3 (2.65%) PHP
9 3 (2.65%) VBScript
10 2 (1.77%) Apple Swift
10 2 (1.77%) Objective-C
11 1 (0.88%) C++
11 1 (0.88%) Go
11 1 (0.88%) MATLAB
11 1 (0.88%) R
11 1 (0.88%) TypeScript
Qualifications
1 22 (19.47%) Degree
Quality Assurance & Compliance
1 7 (6.19%) MiFID
2 5 (4.42%) QA
System Software
1 6 (5.31%) HDFS
2 5 (4.42%) Docker
Systems Management
1 4 (3.54%) Ansible
2 1 (0.88%) Opscode Chef
2 1 (0.88%) Puppet
Vendors
1 10 (8.85%) IBM
2 8 (7.08%) Apigee
3 4 (3.54%) MuleSoft
4 3 (2.65%) Atlassian
4 3 (2.65%) CA
5 2 (1.77%) Apple
5 2 (1.77%) Google
6 1 (0.88%) Microsoft
6 1 (0.88%) Oracle
6 1 (0.88%) Sencha
London
Real Staffing
Rate: £500 - £565 per day
Posted: 4 days ago