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 28 May 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
28 May 2016
Same period 2015 Same period 2014
Reactive Extensions (Rx)
Rank 150 193 206
Rank change year-on-year
+43 +13
Contract jobs citing Reactive Extensions 14 9 2
As % of all contract IT jobs located in the City of London 0.41% 0.16% 0.033%
As % of the Libraries, Frameworks & Software Standards category 1.21% 0.56% 0.11%
Number of daily rates quoted 14 7 1
Median daily rate £613 £575 £650
Median daily rate % change year-on-year
+6.52% -11.53%
UK excluding London median daily rate £369 - -
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
1153 1619 1765
As % of all contract IT jobs located in the City of London 34.08% 29.23% 29.54%
Number of daily rates quoted 989 1309 1370
Median daily rate £450 £425 £438
Median daily rate % change year-on-year
+5.88% -2.85%
90% offered a daily rate of more than £325 £315 £315
10% offered a daily rate of more than £588 £600 £600
UK excluding London median daily rate £375 £350 £350
% change year-on-year
+7.14% -
Number of hourly rates quoted 2 9 0
Median hourly rate £16.52 £19.72 -
Median hourly rate % change year-on-year
-16.23% -
UK excluding London median hourly rate £31.90 £37.80 £35.00
% change year-on-year
-15.60% +8.00%

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 28 May 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 28 May 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 21 (100.00%) C#
2 19 (90.48%) .NET
2 19 (90.48%) WPF
3 16 (76.19%) MVVM
3 16 (76.19%) Front Office
4 15 (71.43%) Multithreading
5 14 (66.67%) Agile Software Development
5 14 (66.67%) Banking
6 13 (61.90%) Task Parallel Library
7 12 (57.14%) TDD
7 12 (57.14%) Investment Banking
8 11 (52.38%) DevExpress
9 9 (42.86%) Foreign Exchange (FX)
10 8 (38.10%) Equities
11 5 (23.81%) SQL Server
12 4 (19.05%) WCF
13 3 (14.29%) AngularJS
13 3 (14.29%) SQL
13 3 (14.29%) BDD
14 2 (9.52%) Microsoft Azure
14 2 (9.52%) Azure SQL Database
14 2 (9.52%) RabbitMQ
14 2 (9.52%) Entity Framework
14 2 (9.52%) DataSynapse
14 2 (9.52%) .NET Framework
14 2 (9.52%) LINQ
14 2 (9.52%) Unit Testing
14 2 (9.52%) Integration Testing
14 2 (9.52%) SQL Server 2008
14 2 (9.52%) Git (software)

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 (4.76%) MS Excel
Cloud Services
1 2 (9.52%) Microsoft Azure
Communications & Networking
1 1 (4.76%) AMQP
Database & Business Intelligence
1 5 (23.81%) SQL Server
2 2 (9.52%) Azure SQL Database
2 2 (9.52%) SQL Server 2008
3 1 (4.76%) Apache Cassandra
3 1 (4.76%) Big Data
3 1 (4.76%) HBase
3 1 (4.76%) MongoDB
3 1 (4.76%) NoSQL
3 1 (4.76%) Oracle Database
3 1 (4.76%) RDBMS
3 1 (4.76%) Relational Database
Development Applications
1 2 (9.52%) Git (software)
1 2 (9.52%) SpecFlow
1 2 (9.52%) Subversion
2 1 (4.76%) MSBuild
2 1 (4.76%) NUnit
2 1 (4.76%) Team Foundation Server
2 1 (4.76%) Visual Studio
General
1 16 (76.19%) Front Office
2 14 (66.67%) Banking
3 12 (57.14%) Investment Banking
4 2 (9.52%) Finance
Job Titles
1 21 (100.00%) Developer
2 19 (90.48%) C# Developer
3 16 (76.19%) Senior Developer
4 15 (71.43%) Senior C# Developer
4 15 (71.43%) WPF Developer
5 14 (66.67%) C# WPF Developer
6 13 (61.90%) Front Office Developer
6 13 (61.90%) Senior WPF Developer
7 12 (57.14%) C# Developer - Investment Banking
8 2 (9.52%) Full Stack Developer
9 1 (4.76%) .NET Developer
9 1 (4.76%) Angular Developer
9 1 (4.76%) C# .NET Developer
9 1 (4.76%) C# GUI Developer
9 1 (4.76%) GUI Developer
9 1 (4.76%) Senior GUI Developer
Libraries, Frameworks & Software Standards
1 19 (90.48%) .NET
1 19 (90.48%) WPF
2 13 (61.90%) Task Parallel Library
3 4 (19.05%) WCF
4 3 (14.29%) AngularJS
5 2 (9.52%) .NET Framework
5 2 (9.52%) ASP.NET
5 2 (9.52%) ASP.NET Web API
5 2 (9.52%) Entity Framework
5 2 (9.52%) LINQ
5 2 (9.52%) RabbitMQ
5 2 (9.52%) React
5 2 (9.52%) SignalR
6 1 (4.76%) ADO.NET
6 1 (4.76%) ASP.NET MVC
6 1 (4.76%) JSON
6 1 (4.76%) Managed Extensibility Framework
6 1 (4.76%) MSMQ
6 1 (4.76%) SOAP
6 1 (4.76%) WebSockets
Miscellaneous
1 9 (42.86%) Foreign Exchange (FX)
2 8 (38.10%) Equities
3 1 (4.76%) Analytical Skills
3 1 (4.76%) Clustering
3 1 (4.76%) User Experience
Processes & Methodologies
1 16 (76.19%) MVVM
2 15 (71.43%) Multithreading
3 14 (66.67%) Agile Software Development
4 12 (57.14%) TDD
5 3 (14.29%) BDD
6 2 (9.52%) Integration Testing
6 2 (9.52%) SOA
6 2 (9.52%) Unit Testing
7 1 (4.76%) Complex Event Processing
7 1 (4.76%) Continuous Delivery
7 1 (4.76%) Continuous Integration
7 1 (4.76%) Electronic Trading
7 1 (4.76%) Low Latency
7 1 (4.76%) Microservices
7 1 (4.76%) Migration
7 1 (4.76%) MVC
7 1 (4.76%) Release Management
7 1 (4.76%) Translating Business Requirements
Programming Languages
1 21 (100.00%) C#
2 3 (14.29%) SQL
3 2 (9.52%) JavaScript
4 1 (4.76%) Java
4 1 (4.76%) XAML
Vendors
1 11 (52.38%) DevExpress
2 2 (9.52%) DataSynapse
2 2 (9.52%) Microsoft
3 1 (4.76%) Oracle