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 25 February 2017 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
25 Feb 2017
Same period 2016 Same period 2015
Reactive Extensions (Rx)
London / City of London
Rank 145 152 186
Rank change year-on-year
+7 +34
Contract jobs citing Reactive Extensions 3 7 3
As % of all contract IT jobs located in the City of London 0.10% 0.22% 0.058%
As % of the Libraries, Frameworks & Software Standards category 0.29% 0.69% 0.19%
Number of daily rates quoted 3 7 2
Median daily rate £600 £675 £625
Median daily rate % change year-on-year
-11.11% +8.00%
UK excluding London median daily rate £450 £513 £344
% change year-on-year
-12.19% +49.09%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

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
1033 1015 1547
As % of all contract IT jobs located in the City of London 35.41% 31.65% 30.09%
Number of daily rates quoted 872 858 1245
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 £300
10% offered a daily rate of more than £625 £600 £575
UK excluding London median daily rate £375 £363 £350
% change year-on-year
+3.44% +3.57%
Number of hourly rates quoted 0 3 3
Median hourly rate - £55.00 £27.37
Median hourly rate % change year-on-year
- +100.94%
UK excluding London median hourly rate £40.00 £38.75 £35.00
% change year-on-year
+3.22% +10.71%

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
Daily Rate Histogram in the City of London

This chart provides a histogram of daily rates quoted in contract IT jobs citing Reactive Extensions across the City of London region over the 3 months to 25 February 2017.

Reactive Extensions Daily Rate Histogram in the City of London

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

For the 6 months to 25 February 2017, 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 6 (100.00%) JavaScript
1 6 (100.00%) C#
1 6 (100.00%) AngularJS
1 6 (100.00%) React
2 5 (83.33%) Finance
3 4 (66.67%) Java
3 4 (66.67%) Multithreading
3 4 (66.67%) RESTful
3 4 (66.67%) NancyFx
4 3 (50.00%) ASP.NET Web API
4 3 (50.00%) SQL
4 3 (50.00%) .NET
5 2 (33.33%) ASP.NET
5 2 (33.33%) MVC
5 2 (33.33%) Banking
5 2 (33.33%) Microsoft Azure
5 2 (33.33%) ASP.NET MVC
5 2 (33.33%) Azure SQL Database
5 2 (33.33%) KnockoutJS
5 2 (33.33%) SignalR
5 2 (33.33%) Complex Event Processing
6 1 (16.67%) BDD
6 1 (16.67%) MongoDB
6 1 (16.67%) Gradle
6 1 (16.67%) Apache Spark
6 1 (16.67%) Spring Boot
6 1 (16.67%) SpecFlow
6 1 (16.67%) Big Data
6 1 (16.67%) HTML5
6 1 (16.67%) MVVM

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 (16.67%) Apache Spark
Cloud Services
1 2 (33.33%) Microsoft Azure
Database & Business Intelligence
1 2 (33.33%) Azure SQL Database
2 1 (16.67%) Big Data
2 1 (16.67%) MongoDB
Development Applications
1 1 (16.67%) Git (software)
1 1 (16.67%) Gradle
1 1 (16.67%) Maven
1 1 (16.67%) Mockito
1 1 (16.67%) NUnit
1 1 (16.67%) SpecFlow
1 1 (16.67%) Subversion
General
1 5 (83.33%) Finance
2 2 (33.33%) Banking
3 1 (16.67%) Front Office
3 1 (16.67%) Investment Banking
Job Titles
1 6 (100.00%) Developer
2 4 (66.67%) Senior Developer
3 3 (50.00%) Full Stack Developer
3 3 (50.00%) Senior UI Developer
3 3 (50.00%) UI Developer
4 2 (33.33%) C# Developer
5 1 (16.67%) Java Developer
5 1 (16.67%) Senior Full Stack Developer
5 1 (16.67%) Senior Java Developer
Libraries, Frameworks & Software Standards
1 6 (100.00%) AngularJS
1 6 (100.00%) React
2 4 (66.67%) NancyFx
2 4 (66.67%) RESTful
3 3 (50.00%) .NET
3 3 (50.00%) ASP.NET Web API
4 2 (33.33%) ASP.NET
4 2 (33.33%) ASP.NET MVC
4 2 (33.33%) KnockoutJS
4 2 (33.33%) SignalR
5 1 (16.67%) HTML
5 1 (16.67%) HTML5
5 1 (16.67%) Spring
5 1 (16.67%) Spring Boot
5 1 (16.67%) WPF
Miscellaneous
1 1 (16.67%) Foreign Exchange (FX)
1 1 (16.67%) Hedge funds
Processes & Methodologies
1 4 (66.67%) Multithreading
2 2 (33.33%) Complex Event Processing
2 2 (33.33%) MVC
3 1 (16.67%) Agile Software Development
3 1 (16.67%) BDD
3 1 (16.67%) MVVM
3 1 (16.67%) Software Engineering
Programming Languages
1 6 (100.00%) C#
1 6 (100.00%) JavaScript
2 4 (66.67%) Java
3 3 (50.00%) SQL