The table below looks at the statistics for Reactive Extensions skills in IT contracts advertised for the City of London region. Included is a guide to the contractor rates offered in IT contracts that have cited Reactive Extensions over the 3 months to 10 December 2016 with a comparison to the same period over the previous 2 years.

Note that daily contractor rates and hourly contractor rates are treated separately. When calculating average contractor rates, daily rates are not derived from quoted hourly rates or vice versa.

3 months to
10 Dec 2016
Same period 2015 Same period 2014
Reactive Extensions (Rx)
Rank 162 147 189
Rank change year-on-year
-15 +42
Contract jobs citing Reactive Extensions 4 7 11
As % of all contract IT jobs located in the City of London 0.13% 0.21% 0.19%
As % of the Libraries, Frameworks & Software Standards category 0.34% 0.63% 0.64%
Number of daily rates quoted 4 7 10
Median daily rate £600 £425 £638
Median daily rate % change year-on-year
+41.17% -33.33%
UK excluding London median daily rate - - £375
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -
Reactive Extensions
London

The following table is for comparison with the above and provides statistics for the entire Libraries, Frameworks & Software Standards category in contract jobs advertised in the City of London region.

Libraries, Frameworks & Software Standards Category
City of London
Contract IT job ads with a match in the
Libraries, Frameworks & Software Standards category
1186 1103 1708
As % of all contract IT jobs located in the City of London 37.47% 32.31% 29.73%
Number of daily rates quoted 1009 928 1367
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 £350 £325 £300
10% offered a daily rate of more than £615 £600 £600
UK excluding London median daily rate £380 £375 £350
% change year-on-year
+1.33% +7.14%
Number of hourly rates quoted 0 4 5
Median hourly rate - £23.41 £30.00
Median hourly rate % change year-on-year
- -21.96%
UK excluding London median hourly rate £40.00 £37.50 £35.00
% change year-on-year
+6.66% +7.14%

Reactive Extensions
Jobs Demand Trend in the City of London

The demand trend of contract jobs across the City of London region citing Reactive Extensions as a proportion of all IT contracts with a match in the Libraries, Frameworks & Software Standards category.

Reactive Extensions Jobs Demand Trend in the City of London

Reactive Extensions
Daily Rate Trend in the City of London

This chart provides the 3-month moving average for daily rates quoted in IT contract jobs citing Reactive Extensions across the City of London region.

Reactive Extensions Daily Rate Trend in the City of London

Reactive Extensions
Top 30 Related IT Skills in the City of London

For the 6 months to 10 December 2016, IT contractor jobs citing Reactive Extensions 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 Reactive Extensions.

1 7 (87.50%) C#
2 6 (75.00%) Finance
2 6 (75.00%) Multithreading
3 5 (62.50%) Java
3 5 (62.50%) JavaScript
3 5 (62.50%) AngularJS
3 5 (62.50%) React
4 4 (50.00%) NancyFx
4 4 (50.00%) MVVM
4 4 (50.00%) Front Office
4 4 (50.00%) .NET
4 4 (50.00%) RESTful
4 4 (50.00%) WPF
4 4 (50.00%) Banking
5 3 (37.50%) Investment Banking
5 3 (37.50%) Agile Software Development
5 3 (37.50%) TDD
6 2 (25.00%) SQL
6 2 (25.00%) Web Services
6 2 (25.00%) OOP
6 2 (25.00%) JMS
6 2 (25.00%) OOD
6 2 (25.00%) Unit Testing
6 2 (25.00%) Degree
6 2 (25.00%) Computer Science
6 2 (25.00%) Software Architecture
6 2 (25.00%) Task Parallel Library
6 2 (25.00%) ASP.NET Web API
6 2 (25.00%) Analytical Skills
6 2 (25.00%) BDD

Reactive Extensions
Top Related 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 1 (12.50%) Apache Spark
Cloud Services
1 1 (12.50%) Microsoft Azure
Database & Business Intelligence
1 1 (12.50%) Azure SQL Database
1 1 (12.50%) Big Data
1 1 (12.50%) MongoDB
Development Applications
1 1 (12.50%) Gradle
1 1 (12.50%) Maven
1 1 (12.50%) Mockito
1 1 (12.50%) NUnit
General
1 6 (75.00%) Finance
2 4 (50.00%) Banking
2 4 (50.00%) Front Office
3 3 (37.50%) Investment Banking
Job Titles
1 8 (100.00%) Developer
2 5 (62.50%) UI Developer
3 4 (50.00%) Senior Developer
4 3 (37.50%) C# Developer
4 3 (37.50%) Front Office Developer
4 3 (37.50%) Senior UI Developer
5 2 (25.00%) C# WPF Developer
5 2 (25.00%) Full Stack Developer
5 2 (25.00%) WPF Developer
6 1 (12.50%) Java Developer
6 1 (12.50%) Senior Full Stack Developer
6 1 (12.50%) Senior Java Developer
Libraries, Frameworks & Software Standards
1 5 (62.50%) AngularJS
1 5 (62.50%) React
2 4 (50.00%) .NET
2 4 (50.00%) NancyFx
2 4 (50.00%) RESTful
2 4 (50.00%) WPF
3 2 (25.00%) ASP.NET Web API
3 2 (25.00%) JMS
3 2 (25.00%) Task Parallel Library
3 2 (25.00%) Web Services
4 1 (12.50%) ASP.NET
4 1 (12.50%) ASP.NET MVC
4 1 (12.50%) HTML
4 1 (12.50%) HTML5
4 1 (12.50%) KnockoutJS
4 1 (12.50%) SignalR
4 1 (12.50%) Spring
4 1 (12.50%) Spring Boot
Miscellaneous
1 2 (25.00%) Algorithms
1 2 (25.00%) Analytical Skills
1 2 (25.00%) Computer Science
1 2 (25.00%) Data Structures
2 1 (12.50%) Fixed Income
2 1 (12.50%) Foreign Exchange (FX)
Processes & Methodologies
1 6 (75.00%) Multithreading
2 4 (50.00%) MVVM
3 3 (37.50%) Agile Software Development
3 3 (37.50%) TDD
4 2 (25.00%) BDD
4 2 (25.00%) OOD
4 2 (25.00%) OOP
4 2 (25.00%) Software Architecture
4 2 (25.00%) Unit Testing
5 1 (12.50%) Complex Event Processing
5 1 (12.50%) MVC
5 1 (12.50%) Software Engineering
Programming Languages
1 7 (87.50%) C#
2 5 (62.50%) Java
2 5 (62.50%) JavaScript
3 2 (25.00%) SQL
3 2 (25.00%) XAML
Qualifications
1 2 (25.00%) Degree