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 27 March 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
27 Mar 2015
Same period 2014 Same period 2013
Reactive Extensions (Rx)
Rank 183 203 190
Rank change year-on-year
+20 -13
Contract jobs citing Reactive Extensions 6 2 5
As % of all contract IT jobs located in the City of London 0.12% 0.033% 0.085%
As % of the Libraries, Frameworks & Software Standards category 0.39% 0.11% 0.30%
Number of daily rates quoted 4 1 5
Average daily rate
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£613 £775 £600
Average daily rate % change year-on-year
-20.96% +29.16%
UK excluding London average daily rate £344 - £300
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
1549 1829 1690
As % of all contract IT jobs located in the City of London 30.17% 30.15% 28.62%
Number of daily rates quoted 1240 1360 1358
Average daily rate £425 £425 £425
90% offered a daily rate of more than £310 £300 £300
10% offered a daily rate of more than £578 £600 £575
UK excluding London average daily rate £350 £330 £325
% change year-on-year
+6.06% +1.53%
Number of hourly rates quoted 7 5 15
Average hourly rate £27.37 £42.50 £45.00
Average hourly rate % change year-on-year
-35.60% -5.55%
90% offered a hourly rate of more than £19.00 £28.05 £19.80
10% offered a hourly rate of more than £56.50 £190.00 £135.00
UK excluding London average hourly rate £36.00 £35.00 £35.00
% change year-on-year
+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 27 March 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 13 (100.00%) C#
1 13 (100.00%) WPF
2 9 (69.23%) Front Office
2 9 (69.23%) Foreign Exchange (FX)
3 7 (53.85%) Multithreading
4 6 (46.15%) Mathematics
4 6 (46.15%) Algorithmic Trading
4 6 (46.15%) Agile Software Development
5 5 (38.46%) LINQ
5 5 (38.46%) Physics
5 5 (38.46%) Low Latency
5 5 (38.46%) MVVM
6 4 (30.77%) SQL
6 4 (30.77%) .NET
7 3 (23.08%) Finance
7 3 (23.08%) TDD
7 3 (23.08%) Banking
8 2 (15.38%) Task Parallel Library
8 2 (15.38%) AngularJS
8 2 (15.38%) Git (software)
8 2 (15.38%) DevExpress
8 2 (15.38%) Electronic Trading
8 2 (15.38%) Investment Banking
8 2 (15.38%) Derivative
8 2 (15.38%) Fixed Income
8 2 (15.38%) HTML
8 2 (15.38%) MS Excel
8 2 (15.38%) OO
8 2 (15.38%) JavaScript
8 2 (15.38%) Microsoft

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

For the 6 months to 27 March 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 2 (15.38%) MS Excel
Database & Business Intelligence
1 1 (7.69%) Relational Database
Development Applications
1 2 (15.38%) Git (software)
2 1 (7.69%) Visual Studio
2 1 (7.69%) Subversion
2 1 (7.69%) NUnit
2 1 (7.69%) ReSharper
2 1 (7.69%) TeamCity
General
1 9 (69.23%) Front Office
2 3 (23.08%) Finance
2 3 (23.08%) Banking
3 2 (15.38%) Investment Banking
Job Titles
1 13 (100.00%) Developer
2 7 (53.85%) C# Developer
3 6 (46.15%) WPF Developer
4 5 (38.46%) Senior Developer
5 3 (23.08%) Senior WPF Developer
6 2 (15.38%) GUI Developer
6 2 (15.38%) Senior C# Developer
7 1 (7.69%) UI Developer
Libraries, Frameworks & Software Standards
1 13 (100.00%) WPF
2 5 (38.46%) LINQ
3 4 (30.77%) .NET
4 2 (15.38%) Task Parallel Library
4 2 (15.38%) AngularJS
4 2 (15.38%) HTML
4 2 (15.38%) HTML5
5 1 (7.69%) .NET Framework
5 1 (7.69%) Silverlight
Miscellaneous
1 9 (69.23%) Foreign Exchange (FX)
2 6 (46.15%) Mathematics
3 5 (38.46%) Physics
4 2 (15.38%) Derivative
4 2 (15.38%) Fixed Income
4 2 (15.38%) User Experience
5 1 (7.69%) Analytical Skills
5 1 (7.69%) Client/Server
5 1 (7.69%) Management Information System
5 1 (7.69%) Credit Derivative
5 1 (7.69%) Economics
5 1 (7.69%) Computer Science
5 1 (7.69%) CUDA
5 1 (7.69%) Mobile App
Processes & Methodologies
1 7 (53.85%) Multithreading
2 6 (46.15%) Algorithmic Trading
2 6 (46.15%) Agile Software Development
3 5 (38.46%) Low Latency
3 5 (38.46%) MVVM
4 3 (23.08%) TDD
5 2 (15.38%) Electronic Trading
5 2 (15.38%) OO
6 1 (7.69%) E-Commerce
6 1 (7.69%) Scrum
6 1 (7.69%) Risk Management
6 1 (7.69%) Data Management
6 1 (7.69%) Pair Programming
6 1 (7.69%) Software Engineering
6 1 (7.69%) Continuous Integration
6 1 (7.69%) BDD
6 1 (7.69%) Continuous Improvement
6 1 (7.69%) Mentoring
6 1 (7.69%) Technical Analysis
Programming Languages
1 13 (100.00%) C#
2 4 (30.77%) SQL
3 2 (15.38%) JavaScript
4 1 (7.69%) Python
4 1 (7.69%) Java
4 1 (7.69%) C++
4 1 (7.69%) XAML
Qualifications
1 1 (7.69%) PhD
1 1 (7.69%) Degree
Vendors
1 2 (15.38%) DevExpress
1 2 (15.38%) Microsoft
2 1 (7.69%) Sybase