The table below looks at the statistics for Reactive Extensions skills in IT contracts advertised for the London region. Included is a guide to the contractor rates offered in IT contracts that have cited Reactive Extensions over the 3 months to 16 January 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
16 Jan 2017
Same period 2016 Same period 2015
Reactive Extensions (Rx)
England / London
Rank 372 362 397
Rank change year-on-year
-10 +35
Contract jobs citing Reactive Extensions 32 36 11
As % of all contract IT jobs located in London 0.17% 0.18% 0.052%
As % of the Libraries, Frameworks & Software Standards category 0.48% 0.54% 0.17%
Number of daily rates quoted 30 32 10
Median daily rate £575 £500 £594
Median daily rate % change year-on-year
+15.00% -15.78%
90% offered a daily rate of more than £493 £425 £450
10% offered a daily rate of more than £650 £625 £653
UK excluding London median daily rate - - -
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 London region.

Libraries, Frameworks & Software Standards Category
London
Contract IT job ads with a match in the
Libraries, Frameworks & Software Standards category
6709 6644 6401
As % of all contract IT jobs located in London 34.63% 32.37% 30.29%
Number of daily rates quoted 5048 4920 4815
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 £350 £325 £308
10% offered a daily rate of more than £600 £580 £580
UK excluding London median daily rate £375 £375 £350
% change year-on-year
- +7.14%
Number of hourly rates quoted 33 45 31
Median hourly rate £45.00 £43.00 £38.25
Median hourly rate % change year-on-year
+4.65% +12.41%
90% offered a hourly rate of more than £27.50 £24.23 £16.00
10% offered a hourly rate of more than £50.00 £55.00 £55.00
UK excluding London median hourly rate £38.00 £37.50 £33.50
% change year-on-year
+1.33% +11.94%

Reactive Extensions
Jobs Demand Trend in London

The demand trend of contract jobs across the 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 London

Reactive Extensions
Daily Rate Trend in London

This chart provides the 3-month moving average for daily rates quoted in IT contract jobs citing Reactive Extensions across the London region.

Reactive Extensions Daily Rate Trend in London

Reactive Extensions
Daily Rate Histogram in London

This chart provides a histogram of daily rates quoted in contract IT jobs citing Reactive Extensions across the London region over the 3 months to 16 January 2017.

Reactive Extensions Daily Rate Histogram in London

Reactive Extensions
Contract Job Locations in London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Reactive Extensions within the London region over the 3 months to 16 January 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
City of London -2 6 £600 +14.83%
Reactive Extensions
England

Reactive Extensions
Top 30 Related IT Skills in London

For the 6 months to 16 January 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 London region with a requirement for Reactive Extensions.

1 34 (94.44%) C#
2 31 (86.11%) .NET
3 30 (83.33%) WPF
3 30 (83.33%) MVVM
4 26 (72.22%) JavaScript
5 24 (66.67%) SQL
6 23 (63.89%) AngularJS
6 23 (63.89%) React
7 21 (58.33%) NancyFx
8 20 (55.56%) ASP.NET Web API
9 17 (47.22%) NoSQL
9 17 (47.22%) Agile Software Development
9 17 (47.22%) TDD
10 15 (41.67%) Finance
10 15 (41.67%) ASP.NET
11 14 (38.89%) Foreign Exchange (FX)
11 14 (38.89%) SQL Server
11 14 (38.89%) Azure SQL Database
11 14 (38.89%) BDD
11 14 (38.89%) SignalR
11 14 (38.89%) Microsoft Azure
12 13 (36.11%) Git (software)
12 13 (36.11%) SpecFlow
12 13 (36.11%) Fintech
12 13 (36.11%) Subversion
13 12 (33.33%) Java
13 12 (33.33%) MSMQ
13 12 (33.33%) Angular 2
13 12 (33.33%) Microservices
13 12 (33.33%) WebSockets

Reactive Extensions
Top Related IT Skills in 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 6 (16.67%) Apache Spark
2 1 (2.78%) SharePoint
2 1 (2.78%) SharePoint 2013
Applications
1 2 (5.56%) MS Excel
Cloud Services
1 14 (38.89%) Microsoft Azure
Communications & Networking
1 12 (33.33%) AMQP
Database & Business Intelligence
1 17 (47.22%) NoSQL
2 14 (38.89%) Azure SQL Database
2 14 (38.89%) SQL Server
3 7 (19.44%) MongoDB
3 7 (19.44%) Relational Database
4 6 (16.67%) Big Data
5 5 (13.89%) Redis
6 1 (2.78%) Oracle Database
6 1 (2.78%) Oracle Database 10g
6 1 (2.78%) RDBMS
Development Applications
1 13 (36.11%) Git (software)
1 13 (36.11%) SpecFlow
1 13 (36.11%) Subversion
2 9 (25.00%) NUnit
3 6 (16.67%) Gradle
3 6 (16.67%) Maven
3 6 (16.67%) Mockito
4 1 (2.78%) Rhino Mocks
General
1 15 (41.67%) Finance
2 11 (30.56%) Banking
2 11 (30.56%) Front Office
3 10 (27.78%) Investment Banking
Job Titles
1 36 (100.00%) Developer
2 27 (75.00%) C# Developer
3 13 (36.11%) WPF Developer
4 12 (33.33%) C# WPF Developer
5 10 (27.78%) Angular Developer
6 9 (25.00%) .NET Developer
7 8 (22.22%) Azure Developer
7 8 (22.22%) C# .NET Developer
7 8 (22.22%) JavaScript Developer
8 7 (19.44%) ASP.NET Developer
8 7 (19.44%) C# ASP.NET Developer
9 6 (16.67%) Java Developer
10 5 (13.89%) Agile C# Developer
10 5 (13.89%) Agile Developer
10 5 (13.89%) Agile Java Developer
10 5 (13.89%) Senior Developer
11 4 (11.11%) GUI Developer
11 4 (11.11%) UI Developer
12 3 (8.33%) C# GUI Developer
12 3 (8.33%) Senior UI Developer
Libraries, Frameworks & Software Standards
1 31 (86.11%) .NET
2 30 (83.33%) WPF
3 23 (63.89%) AngularJS
3 23 (63.89%) React
4 21 (58.33%) NancyFx
5 20 (55.56%) ASP.NET Web API
6 15 (41.67%) ASP.NET
7 14 (38.89%) SignalR
8 12 (33.33%) Angular 2
8 12 (33.33%) MSMQ
8 12 (33.33%) WebSockets
9 10 (27.78%) RESTful
10 8 (22.22%) HTML
10 8 (22.22%) HTML5
11 7 (19.44%) .NET Framework
12 6 (16.67%) Spring
12 6 (16.67%) Spring Boot
13 3 (8.33%) ASP.NET MVC
13 3 (8.33%) Task Parallel Library
14 2 (5.56%) KnockoutJS
Miscellaneous
1 14 (38.89%) Foreign Exchange (FX)
2 13 (36.11%) Fintech
3 4 (11.11%) Analytical Skills
3 4 (11.11%) Fixed Income
4 2 (5.56%) Economics
5 1 (2.78%) Algorithms
5 1 (2.78%) Computer Science
5 1 (2.78%) Credit Risk
5 1 (2.78%) Data Structures
5 1 (2.78%) Hedge funds
5 1 (2.78%) User Experience
5 1 (2.78%) Virtual Team
5 1 (2.78%) Visualisation
Operating Systems
1 1 (2.78%) Android
1 1 (2.78%) Unix
Processes & Methodologies
1 30 (83.33%) MVVM
2 17 (47.22%) Agile Software Development
2 17 (47.22%) TDD
3 14 (38.89%) BDD
4 12 (33.33%) Microservices
5 11 (30.56%) Multithreading
6 8 (22.22%) Scrum
6 8 (22.22%) SDLC
7 7 (19.44%) Continuous Improvement
7 7 (19.44%) Domain-Driven Design
7 7 (19.44%) OO
7 7 (19.44%) OOD
7 7 (19.44%) Pair Programming
7 7 (19.44%) Technical Analysis
8 6 (16.67%) Electronic Trading
9 3 (8.33%) Continuous Integration
9 3 (8.33%) CQRS
9 3 (8.33%) MVC
9 3 (8.33%) Software Engineering
10 2 (5.56%) Complex Event Processing
Programming Languages
1 34 (94.44%) C#
2 26 (72.22%) JavaScript
3 24 (66.67%) SQL
4 12 (33.33%) Java
5 3 (8.33%) XAML
Qualifications
1 1 (2.78%) Degree
Quality Assurance & Compliance
1 1 (2.78%) QA
Vendors
1 3 (8.33%) Microsoft
2 1 (2.78%) Bloomberg
2 1 (2.78%) Oracle