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 average contractor rates offered in IT contracts that have cited Reactive Extensions over the 3 months to 3 August 2015 with a comparison to the same period in 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.

Location
3 months to
3 Aug 2015
Same period 2014 Same period 2013
Reactive Extensions (Rx)
Rank 198 189 215
Rank change year-on-year
-9 +26
Contract jobs citing Reactive Extensions 13 8 9
As % of all contract IT jobs located in the City of London 0.22% 0.14% 0.13%
As % of the Libraries, Frameworks & Software Standards category 0.74% 0.47% 0.42%
Number of daily rates quoted 13 7 8
Average daily rate
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£625 £600 £650
Average daily rate % change year-on-year
+4.16% -7.69%
90% offered a daily rate of more than £605 £505 £618
10% offered a daily rate of more than £675 £650 £698
UK excluding London average daily rate £399 £400 £313
% change year-on-year
-0.25% +28.00%
Number of hourly rates quoted 0 0 0
Average hourly rate - - -
UK excluding London average 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
1754 1708 2137
As % of all contract IT jobs located in the City of London 30.18% 29.61% 30.18%
Number of daily rates quoted 1439 1282 1632
Average daily rate £450 £438 £425
Average daily rate % change year-on-year
+2.85% +2.94%
90% offered a daily rate of more than £325 £310 £275
10% offered a daily rate of more than £625 £600 £600
UK excluding London average daily rate £350 £350 £325
% change year-on-year
- +7.69%
Number of hourly rates quoted 9 12 20
Average hourly rate £40.00 £45.00 £42.50
Average hourly rate % change year-on-year
-11.11% +5.88%
90% offered a hourly rate of more than £23.02 £16.00 £27.97
10% offered a hourly rate of more than £187.50 £45.00 £52.50
UK excluding London average hourly rate £39.55 £34.00 £35.00
% change year-on-year
+16.32% -2.85%

Reactive Extensions
Jobs Demand Trend in the City of London

This chart provides a 3-month moving total of IT contractor jobs citing Reactive Extensions across the City of London region as a proportion of the total demand within 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 3 August 2015, IT contractor jobs across the City of London region citing Reactive Extensions also mentioned the following IT skills in order of popularity. The figures indicate the number of jobs and their proportion against the total number of contract IT job ads sampled that cited Reactive Extensions.

1 21 (100.00%) WPF
2 20 (95.24%) C#
3 18 (85.71%) Front Office
4 16 (76.19%) Foreign Exchange (FX)
5 13 (61.90%) Agile Software Development
5 13 (61.90%) MVVM
6 9 (42.86%) TDD
6 9 (42.86%) .NET
7 8 (38.10%) Banking
8 7 (33.33%) Multithreading
9 6 (28.57%) Low Latency
9 6 (28.57%) LINQ
9 6 (28.57%) Algorithmic Trading
10 5 (23.81%) DevExpress
10 5 (23.81%) FX Algorithmic Trading
10 5 (23.81%) Mathematics
10 5 (23.81%) Physics
10 5 (23.81%) Investment Banking
10 5 (23.81%) Finance
11 3 (14.29%) Unit Testing
11 3 (14.29%) Electronic Trading
11 3 (14.29%) SQL
11 3 (14.29%) TIBCO
12 2 (9.52%) Rendezvous
12 2 (9.52%) HTML
12 2 (9.52%) SQL Server
12 2 (9.52%) XAML
12 2 (9.52%) AngularJS
12 2 (9.52%) Enterprise Software
12 2 (9.52%) HTML5

Reactive Extensions
Top Related IT Skills in the City of London by Category

For the 6 months to 3 August 2015, IT contractor jobs across the City of London region citing Reactive Extensions also mentioned the following IT skills grouped by category. The figures indicate the number of jobs and their proportion against the total number of contract IT job ads sampled that cited Reactive Extensions. Up to 20 skills are shown per category.

Applications
1 1 (4.76%) MS Excel
Business Applications
1 1 (4.76%) RMDS
Database & Business Intelligence
1 2 (9.52%) SQL Server
2 1 (4.76%) Relational Database
Development Applications
1 1 (4.76%) NUnit
1 1 (4.76%) Git (software)
General
1 18 (85.71%) Front Office
2 8 (38.10%) Banking
3 5 (23.81%) Investment Banking
3 5 (23.81%) Finance
Job Titles
1 21 (100.00%) Developer
2 15 (71.43%) Senior Developer
3 14 (66.67%) C# Developer
4 9 (42.86%) WPF Developer
5 8 (38.10%) Senior C# Developer
6 7 (33.33%) Senior WPF Developer
7 4 (19.05%) GUI Developer
8 1 (4.76%) C# .NET Developer
8 1 (4.76%) Senior .NET Developer
8 1 (4.76%) .NET Developer
Libraries, Frameworks & Software Standards
1 21 (100.00%) WPF
2 9 (42.86%) .NET
3 6 (28.57%) LINQ
4 2 (9.52%) HTML5
4 2 (9.52%) Managed Extensibility Framework
4 2 (9.52%) AngularJS
4 2 (9.52%) Rendezvous
4 2 (9.52%) HTML
5 1 (4.76%) Silverlight
Miscellaneous
1 16 (76.19%) Foreign Exchange (FX)
2 5 (23.81%) Mathematics
2 5 (23.81%) Physics
3 2 (9.52%) Enterprise Software
4 1 (4.76%) Fixed Income
4 1 (4.76%) Credit Derivative
4 1 (4.76%) Economics
4 1 (4.76%) Derivative
Processes & Methodologies
1 13 (61.90%) Agile Software Development
1 13 (61.90%) MVVM
2 9 (42.86%) TDD
3 7 (33.33%) Multithreading
4 6 (28.57%) Algorithmic Trading
4 6 (28.57%) Low Latency
5 5 (23.81%) FX Algorithmic Trading
6 3 (14.29%) Unit Testing
6 3 (14.29%) Electronic Trading
7 1 (4.76%) BDD
7 1 (4.76%) Continuous Improvement
7 1 (4.76%) Continuous Integration
7 1 (4.76%) Risk Analysis
7 1 (4.76%) Pair Programming
7 1 (4.76%) Software Engineering
7 1 (4.76%) Business Analysis
7 1 (4.76%) OO
7 1 (4.76%) E-Commerce
7 1 (4.76%) Risk Management
7 1 (4.76%) Scrum
Programming Languages
1 20 (95.24%) C#
2 3 (14.29%) SQL
3 2 (9.52%) XAML
4 1 (4.76%) JavaScript
Vendors
1 5 (23.81%) DevExpress
2 3 (14.29%) TIBCO
3 1 (4.76%) ION Trading
3 1 (4.76%) Microsoft