Period
to 19 November 2017

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 6 months to 19 November 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
6 months to
19 Nov 2017
Same period 2016 Same period 2015
Rank 511 489 550
Rank change year-on-year -22 +61 -7
Contract jobs citing WebSockets 123 118 52
As % of all contract IT jobs advertised in London 0.27% 0.26% 0.11%
As % of the Libraries, Frameworks & Software Standards category 0.72% 0.76% 0.34%
Number of daily rates quoted 101 92 34
London median daily rate £550 £463 £488
Median daily rate % change year-on-year +18.92% -5.13% +2.63%
10th Percentile £413 £319 £386
90th Percentile £663 £650 £700
England median daily rate £530 £410 £463
% change year-on-year +29.27% -11.35% +7.25%
Number of hourly rates quoted 0 0 0
London median hourly rate - - -
England median hourly rate - £37.50 £37.50

WebSockets is in the Software Libraries and Frameworks category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in London with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
London
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 17171 15431 15150
As % of all contract IT jobs advertised in London 37.15% 34.36% 32.22%
Number of daily rates quoted 13119 11555 11268
London median daily rate £500 £463 £450
Median daily rate % change year-on-year +8.11% +2.78% +5.88%
10th Percentile £350 £319 £308
90th Percentile £650 £625 £625
England median daily rate £463 £425 £413
% change year-on-year +8.82% +3.03% +3.13%
Number of hourly rates quoted 101 71 93
London median hourly rate £35.00 £40.00 £37.50
Median hourly rate % change year-on-year -12.50% +6.67% +7.14%
10th Percentile £19.00 £19.23 £14.25
90th Percentile £50.00 £57.50 £58.75
England median hourly rate £40.00 £37.50 £37.50
% change year-on-year +6.67% - +9.49%

WebSockets
Job Vacancy Trend in London

Job postings citing WebSockets as a percentage of all IT jobs advertised in London.

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 6 months to 19 November 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 6 months to 19 November 2017. 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 -12 19 £530 +35.03% 10
West London -10 3 - - 1
East London -8 1 £450 -5.26%
WebSockets
England

For the 6 months to 19 November 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 96 (78.05%) JavaScript
2 79 (64.23%) Agile Software Development
3 76 (61.79%) HTML
4 71 (57.72%) React
5 69 (56.10%) AngularJS
6 64 (52.03%) HTML5
7 55 (44.72%) CSS
8 49 (39.84%) Finance
9 46 (37.40%) MongoDB
10 45 (36.59%) Redux
11 43 (34.96%) Git (software)
12 42 (34.15%) REST
13 41 (33.33%) CSS3
13 41 (33.33%) .NET
14 38 (30.89%) C#
14 38 (30.89%) SignalR
15 35 (28.46%) Java
15 35 (28.46%) Banking
16 34 (27.64%) Node.js
17 33 (26.83%) JSON
18 32 (26.02%) Web Development
18 32 (26.02%) Subversion
18 32 (26.02%) Microsoft
18 32 (26.02%) NoSQL
18 32 (26.02%) BDD
18 32 (26.02%) ES6
19 31 (25.20%) Scrum
20 30 (24.39%) ASP.NET
21 29 (23.58%) RabbitMQ
21 29 (23.58%) Greenfield Project

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 25 (20.33%) NServiceBus
2 6 (4.88%) CMS
2 6 (4.88%) Elasticsearch
3 4 (3.25%) Tomcat
4 3 (2.44%) Apache
4 3 (2.44%) JBoss
4 3 (2.44%) nginx
4 3 (2.44%) WebLogic
4 3 (2.44%) WebSphere
5 1 (0.81%) Gunicorn
5 1 (0.81%) Oracle Coherence
Applications
1 1 (0.81%) Microsoft Excel
1 1 (0.81%) Microsoft Office
1 1 (0.81%) Microsoft Project
1 1 (0.81%) MS Visio
Cloud Services
1 19 (15.45%) npm
2 8 (6.50%) SaaS
3 6 (4.88%) Amazon AWS
3 6 (4.88%) GitHub
4 5 (4.07%) Slack
4 5 (4.07%) Trello
5 4 (3.25%) Cloud Computing
6 3 (2.44%) Microsoft Azure
7 2 (1.63%) Azure Active Directory
7 2 (1.63%) Office 365
7 2 (1.63%) PaaS
7 2 (1.63%) Serverless
Communications & Networking
1 9 (7.32%) Internet
2 4 (3.25%) HTTP
2 4 (3.25%) Skype
Database & Business Intelligence
1 46 (37.40%) MongoDB
2 32 (26.02%) NoSQL
3 12 (9.76%) SQL Server
4 8 (6.50%) Big Data
5 6 (4.88%) PostgreSQL
6 3 (2.44%) Aerospike
6 3 (2.44%) MS Access
7 2 (1.63%) Azure SQL Database
7 2 (1.63%) MySQL
8 1 (0.81%) Blockchain
8 1 (0.81%) Relational Database
8 1 (0.81%) VoltDB
Development Applications
1 43 (34.96%) Git (software)
2 32 (26.02%) Subversion
3 28 (22.76%) SpecFlow
4 23 (18.70%) webpack
5 19 (15.45%) Jasmine
6 17 (13.82%) Babel
7 15 (12.20%) Jenkins
7 15 (12.20%) JIRA
8 10 (8.13%) Mocha
9 9 (7.32%) Grunt
10 6 (4.88%) Cucumber
10 6 (4.88%) gulp
10 6 (4.88%) TeamCity
11 5 (4.07%) Gradle
12 4 (3.25%) Bitbucket
12 4 (3.25%) Bower
12 4 (3.25%) JUnit
12 4 (3.25%) Maven
12 4 (3.25%) Selenium
12 4 (3.25%) Travis CI
General
1 49 (39.84%) Finance
2 35 (28.46%) Banking
3 14 (11.38%) Front Office
3 14 (11.38%) Investment Banking
4 5 (4.07%) Wholesale Banking
5 2 (1.63%) Back Office
6 1 (0.81%) Electronics
6 1 (0.81%) Financial Institution
6 1 (0.81%) Manufacturing
6 1 (0.81%) Marketing
6 1 (0.81%) Telecoms
Job Titles
1 121 (98.37%) Developer
2 37 (30.08%) Full Stack Developer
3 28 (22.76%) Java Developer
4 27 (21.95%) C# Developer
5 24 (19.51%) JavaScript Developer
5 24 (19.51%) Senior Developer
6 18 (14.63%) Lead Developer
7 13 (10.57%) Lead C# Developer
8 11 (8.94%) Front End Developer (Client-Side Developer)
8 11 (8.94%) HTML Developer
9 10 (8.13%) Senior JavaScript Developer
10 9 (7.32%) Web Developer
11 8 (6.50%) Python Developer
12 6 (4.88%) Angular Developer
12 6 (4.88%) Senior Front-End Developer
12 6 (4.88%) Senior Full Stack Developer
12 6 (4.88%) UI Developer
13 5 (4.07%) Node.js Developer
14 4 (3.25%) Senior Python Developer
15 3 (2.44%) Technical Leader
Libraries, Frameworks & Software Standards
1 76 (61.79%) HTML
2 71 (57.72%) React
3 69 (56.10%) AngularJS
4 64 (52.03%) HTML5
5 55 (44.72%) CSS
6 45 (36.59%) Redux
7 42 (34.15%) REST
8 41 (33.33%) .NET
8 41 (33.33%) CSS3
9 38 (30.89%) SignalR
10 34 (27.64%) Node.js
11 33 (26.83%) JSON
12 30 (24.39%) ASP.NET
13 29 (23.58%) RabbitMQ
14 25 (20.33%) Akka
14 25 (20.33%) Angular 2
14 25 (20.33%) Kafka
14 25 (20.33%) Reactive Extensions
15 22 (17.89%) ASP.NET Web API
16 19 (15.45%) Backbone.js
Miscellaneous
1 29 (23.58%) Greenfield Project
2 25 (20.33%) Hedge funds
3 14 (11.38%) User Experience
4 11 (8.94%) Fintech
5 10 (8.13%) Foreign Exchange (FX)
6 7 (5.69%) Analytical Skills
6 7 (5.69%) Derivative
6 7 (5.69%) Equity Derivative
7 5 (4.07%) Mobile App
8 4 (3.25%) Credit Risk
8 4 (3.25%) Market Risk
9 3 (2.44%) Data Structures
9 3 (2.44%) Fixed Income
9 3 (2.44%) Linux Command Line
10 2 (1.63%) N-Tier
10 2 (1.63%) PKI
10 2 (1.63%) W3C
11 1 (0.81%) Equities
11 1 (0.81%) Grid Computing
11 1 (0.81%) Smartphone
Operating Systems
1 9 (7.32%) Unix
2 7 (5.69%) Apple iOS
3 6 (4.88%) Linux
4 4 (3.25%) CoreOS
5 3 (2.44%) Android
Processes & Methodologies
1 79 (64.23%) Agile Software Development
2 32 (26.02%) BDD
2 32 (26.02%) Web Development
3 31 (25.20%) Scrum
4 25 (20.33%) Complex Event Processing
4 25 (20.33%) CQRS
5 22 (17.89%) OO
6 21 (17.07%) Test Automation
7 19 (15.45%) TDD
8 18 (14.63%) Front End Development
9 14 (11.38%) Web Application Development
10 13 (10.57%) MVC
11 12 (9.76%) Dependency Management
11 12 (9.76%) Performance Optimisation
11 12 (9.76%) Unit Testing
12 11 (8.94%) Continuous Integration
13 9 (7.32%) Cross-Browser Compatibility
13 9 (7.32%) DevOps
14 8 (6.50%) Mathematics
15 7 (5.69%) Microservices
Programming Languages
1 96 (78.05%) JavaScript
2 38 (30.89%) C#
3 35 (28.46%) Java
4 32 (26.02%) ES6
5 23 (18.70%) ECMAScript
6 17 (13.82%) TypeScript
7 12 (9.76%) Python
8 9 (7.32%) SQL
9 6 (4.88%) Scala
10 5 (4.07%) Bash Shell
11 4 (3.25%) C++
11 4 (3.25%) GraphQL
11 4 (3.25%) Shell Script
12 3 (2.44%) VB
12 3 (2.44%) VC++
13 1 (0.81%) Ruby
Qualifications
1 2 (1.63%) BPSS Clearance
1 2 (1.63%) Degree
Quality Assurance & Compliance
1 7 (5.69%) QA
System Software
1 16 (13.01%) Docker
2 2 (1.63%) Active Directory
Systems Management
1 5 (4.07%) Ansible
2 4 (3.25%) Kubernetes
3 3 (2.44%) Opscode Chef
4 1 (0.81%) Terraform
Vendors
1 32 (26.02%) Microsoft
2 10 (8.13%) Atlassian
2 10 (8.13%) Oracle
3 1 (0.81%) SAP