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 July 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
25 Jul 2016
Same period 2015 Same period 2014
Reactive Extensions (Rx)
Rank 160 197 195
Rank change year-on-year
+37 -2
Contract jobs citing Reactive Extensions 4 14 6
As % of all contract IT jobs located in the City of London 0.12% 0.24% 0.10%
As % of the Libraries, Frameworks & Software Standards category 0.33% 0.78% 0.35%
Number of daily rates quoted 4 13 5
Median daily rate £525 £625 £600
Median daily rate % change year-on-year
-16.00% +4.16%
UK excluding London median daily rate £475 £399 £400
% change year-on-year
+19.04% -0.25%
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
1223 1790 1710
As % of all contract IT jobs located in the City of London 35.87% 30.22% 29.47%
Number of daily rates quoted 1048 1461 1276
Median daily rate £450 £450 £450
90% offered a daily rate of more than £338 £325 £313
10% offered a daily rate of more than £575 £615 £600
UK excluding London median daily rate £375 £350 £340
% change year-on-year
+7.14% +2.94%
Number of hourly rates quoted 3 8 10
Median hourly rate £20.00 £24.23 £45.00
Median hourly rate % change year-on-year
-17.45% -46.15%
UK excluding London median hourly rate £37.50 £40.00 £34.75
% change year-on-year
-6.25% +15.10%

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 July 2016.

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 July 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 23 (100.00%) C#
2 21 (91.30%) .NET
3 19 (82.61%) WPF
4 17 (73.91%) Banking
4 17 (73.91%) MVVM
4 17 (73.91%) Front Office
5 15 (65.22%) Agile Software Development
5 15 (65.22%) Multithreading
6 13 (56.52%) Task Parallel Library
6 13 (56.52%) TDD
6 13 (56.52%) Investment Banking
7 11 (47.83%) DevExpress
8 9 (39.13%) Foreign Exchange (FX)
9 8 (34.78%) Equities
10 5 (21.74%) Finance
10 5 (21.74%) SQL
10 5 (21.74%) AngularJS
11 4 (17.39%) SignalR
11 4 (17.39%) Azure SQL Database
11 4 (17.39%) BDD
11 4 (17.39%) Microsoft Azure
11 4 (17.39%) JavaScript
11 4 (17.39%) SQL Server
11 4 (17.39%) ASP.NET
11 4 (17.39%) React
11 4 (17.39%) ASP.NET Web API
12 3 (13.04%) KnockoutJS
12 3 (13.04%) SpecFlow
12 3 (13.04%) MVC
12 3 (13.04%) ASP.NET MVC

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:

Applications
1 1 (4.35%) MS Excel
Cloud Services
1 4 (17.39%) Microsoft Azure
Communications & Networking
1 1 (4.35%) AMQP
Database & Business Intelligence
1 4 (17.39%) Azure SQL Database
1 4 (17.39%) SQL Server
2 2 (8.70%) MongoDB
2 2 (8.70%) SQL Server 2008
3 1 (4.35%) NoSQL
Development Applications
1 3 (13.04%) Git (software)
1 3 (13.04%) SpecFlow
1 3 (13.04%) Subversion
General
1 17 (73.91%) Banking
1 17 (73.91%) Front Office
2 13 (56.52%) Investment Banking
3 5 (21.74%) Finance
Job Titles
1 23 (100.00%) Developer
2 21 (91.30%) C# Developer
3 16 (69.57%) Senior Developer
4 15 (65.22%) Senior C# Developer
4 15 (65.22%) WPF Developer
5 14 (60.87%) C# WPF Developer
5 14 (60.87%) Front Office Developer
6 13 (56.52%) Senior WPF Developer
7 12 (52.17%) C# Developer - Investment Banking
8 4 (17.39%) Full Stack Developer
9 1 (4.35%) .NET Developer
9 1 (4.35%) Angular Developer
9 1 (4.35%) C# .NET Developer
9 1 (4.35%) C# GUI Developer
9 1 (4.35%) GUI Developer
9 1 (4.35%) Senior GUI Developer
9 1 (4.35%) UI Developer
Libraries, Frameworks & Software Standards
1 21 (91.30%) .NET
2 19 (82.61%) WPF
3 13 (56.52%) Task Parallel Library
4 5 (21.74%) AngularJS
5 4 (17.39%) ASP.NET
5 4 (17.39%) ASP.NET Web API
5 4 (17.39%) React
5 4 (17.39%) SignalR
6 3 (13.04%) ASP.NET MVC
6 3 (13.04%) KnockoutJS
6 3 (13.04%) WCF
7 2 (8.70%) .NET Framework
7 2 (8.70%) Entity Framework
7 2 (8.70%) RabbitMQ
8 1 (4.35%) HTML5
8 1 (4.35%) LINQ
8 1 (4.35%) MSMQ
8 1 (4.35%) NancyFx
8 1 (4.35%) Web Services
8 1 (4.35%) WebSockets
Miscellaneous
1 9 (39.13%) Foreign Exchange (FX)
2 8 (34.78%) Equities
3 1 (4.35%) Algorithms
3 1 (4.35%) Analytical Skills
3 1 (4.35%) Computer Science
3 1 (4.35%) Data Structures
3 1 (4.35%) User Experience
Processes & Methodologies
1 17 (73.91%) MVVM
2 15 (65.22%) Agile Software Development
2 15 (65.22%) Multithreading
3 13 (56.52%) TDD
4 4 (17.39%) BDD
5 3 (13.04%) Complex Event Processing
5 3 (13.04%) MVC
6 2 (8.70%) Integration Testing
6 2 (8.70%) SOA
6 2 (8.70%) Unit Testing
7 1 (4.35%) Electronic Trading
7 1 (4.35%) Low Latency
7 1 (4.35%) Microservices
7 1 (4.35%) Migration
7 1 (4.35%) OOD
7 1 (4.35%) OOP
7 1 (4.35%) Software Architecture
Programming Languages
1 23 (100.00%) C#
2 5 (21.74%) SQL
3 4 (17.39%) JavaScript
4 1 (4.35%) XAML
Qualifications
1 1 (4.35%) Degree
Vendors
1 11 (47.83%) DevExpress
2 2 (8.70%) DataSynapse
3 1 (4.35%) Microsoft