Period
to 20 November 2017

The following table provides summary statistics for contract job vacancies advertised in London with a requirement for Reactive Extensions skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Reactive Extensions over the 6 months to 20 November 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Reactive Extensions for .NET (Rx.NET)
England > London
6 months to
20 Nov 2017
Same period 2016 Same period 2015
Rank 534 593 552
Rank change year-on-year +59 -41 +18
Contract jobs citing Reactive Extensions 98 23 66
As % of all contract IT jobs advertised in London 0.21% 0.052% 0.14%
As % of the Libraries, Frameworks & Software Standards category 0.57% 0.15% 0.44%
Number of daily rates quoted 91 21 58
London median daily rate £600 £600 £500
Median daily rate % change year-on-year - +20.00% -16.67%
10th Percentile £506 £513 £373
90th Percentile £688 £675 £675
England median daily rate £600 £550 £500
% change year-on-year +9.09% +10.00% -16.67%
Number of hourly rates quoted 0 0 0
London median hourly rate - - -
England median hourly rate - - -

Reactive Extensions is in the Software Libraries and Frameworks category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in London with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
London
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 17334 15311 15129
As % of all contract IT jobs advertised in London 37.14% 34.35% 32.26%
Number of daily rates quoted 13241 11465 11260
London median daily rate £500 £463 £450
Median daily rate % change year-on-year +8.11% +2.78% +5.88%
10th Percentile £350 £319 £308
90th Percentile £650 £625 £625
England median daily rate £463 £425 £413
% change year-on-year +8.82% +3.03% +3.13%
Number of hourly rates quoted 103 71 95
London median hourly rate £30.75 £40.00 £37.50
Median hourly rate % change year-on-year -23.13% +6.67% +7.14%
10th Percentile £19.09 £19.23 £14.25
90th Percentile £49.75 £57.50 £58.75
England median hourly rate £40.00 £37.50 £37.50
% change year-on-year +6.67% - +10.29%

Reactive Extensions
Job Vacancy Trend in London

Job postings citing Reactive Extensions as a percentage of all IT jobs advertised in London.

Job vacancy trend for Reactive Extensions in London

Reactive Extensions
Contractor Daily Rate Trend in London

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

Contractor daily rate trend for Reactive Extensions in London

Reactive Extensions
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing Reactive Extensions in London over the 6 months to 20 November 2017.

Contractor daily rate histogram for Reactive Extensions 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 6 months to 20 November 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Central London -2 14 £530 -11.67%
East London - 1 £488 -
Reactive Extensions
England

For the 6 months to 20 November 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 89 (90.82%) C#
2 87 (88.78%) .NET
3 78 (79.59%) Agile Software Development
4 64 (65.31%) Finance
5 58 (59.18%) MVVM
6 56 (57.14%) JavaScript
7 51 (52.04%) Banking
7 51 (52.04%) NoSQL
8 50 (51.02%) MongoDB
9 48 (48.98%) AngularJS
10 45 (45.92%) Front Office
11 44 (44.90%) WPF
12 41 (41.84%) Subversion
13 38 (38.78%) React
14 36 (36.73%) Investment Banking
15 35 (35.71%) Foreign Exchange (FX)
15 35 (35.71%) SQL
16 32 (32.65%) ASP.NET Web API
17 31 (31.63%) Complex Event Processing
18 29 (29.59%) Microsoft
18 29 (29.59%) Greenfield Project
19 27 (27.55%) BDD
19 27 (27.55%) HTML
19 27 (27.55%) Redux
20 26 (26.53%) .NET Framework
20 26 (26.53%) NUnit
20 26 (26.53%) Hedge funds
20 26 (26.53%) SpecFlow
20 26 (26.53%) Git (software)
21 25 (25.51%) CQRS

Reactive Extensions
Co-occurring 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 25 (25.51%) NServiceBus
2 6 (6.12%) Apache Spark
Applications
1 1 (1.02%) Microsoft Excel
Business Applications
1 3 (3.06%) RMDS
Cloud Services
1 3 (3.06%) GitHub
Database & Business Intelligence
1 51 (52.04%) NoSQL
2 50 (51.02%) MongoDB
3 18 (18.37%) Relational Database
3 18 (18.37%) SQL Server
4 9 (9.18%) SQL Server Reporting Services
5 7 (7.14%) Big Data
6 6 (6.12%) Redis
6 6 (6.12%) SQL Server 2012
7 2 (2.04%) SQLite
8 1 (1.02%) Apache Cassandra
8 1 (1.02%) DocumentDB
8 1 (1.02%) HBase
8 1 (1.02%) OLAP
8 1 (1.02%) Oracle Database
8 1 (1.02%) RDBMS
Development Applications
1 41 (41.84%) Subversion
2 26 (26.53%) Git (software)
2 26 (26.53%) NUnit
2 26 (26.53%) SpecFlow
3 15 (15.31%) Atlassian Bamboo
3 15 (15.31%) JIRA
4 7 (7.14%) Gradle
4 7 (7.14%) JUnit
4 7 (7.14%) Maven
4 7 (7.14%) Mockito
5 4 (4.08%) TeamCity
5 4 (4.08%) Visual Studio
6 2 (2.04%) CodeRush
6 2 (2.04%) ReSharper
7 1 (1.02%) MSBuild
7 1 (1.02%) NuGet
7 1 (1.02%) Team Foundation Server
General
1 64 (65.31%) Finance
2 51 (52.04%) Banking
3 45 (45.92%) Front Office
4 36 (36.73%) Investment Banking
5 2 (2.04%) Pharmaceutical
5 2 (2.04%) Retail
Job Titles
1 97 (98.98%) Developer
2 75 (76.53%) C# Developer
3 31 (31.63%) Full Stack Developer
4 28 (28.57%) WPF Developer
5 25 (25.51%) C# WPF Developer
6 18 (18.37%) JavaScript Developer
6 18 (18.37%) Senior Developer
7 17 (17.35%) Lead Developer
8 14 (14.29%) Credit Risk Developer
8 14 (14.29%) Lead C# Developer
9 13 (13.27%) Angular Developer
10 12 (12.24%) Tools Developer
11 9 (9.18%) Market Risk Developer
12 8 (8.16%) .NET Developer
12 8 (8.16%) C# WCF Developer
12 8 (8.16%) Senior .NET Developer
12 8 (8.16%) WCF Developer
13 7 (7.14%) C# Developer - Electronic Trading
13 7 (7.14%) Electronic Trading Developer
13 7 (7.14%) Senior WPF Developer
Libraries, Frameworks & Software Standards
1 87 (88.78%) .NET
2 48 (48.98%) AngularJS
3 44 (44.90%) WPF
4 38 (38.78%) React
5 32 (32.65%) ASP.NET Web API
6 27 (27.55%) HTML
6 27 (27.55%) Redux
7 26 (26.53%) .NET Framework
8 25 (25.51%) Akka
8 25 (25.51%) Angular 2
8 25 (25.51%) HTML5
8 25 (25.51%) Kafka
8 25 (25.51%) RabbitMQ
8 25 (25.51%) SignalR
8 25 (25.51%) WebSockets
9 21 (21.43%) Task Parallel Library
10 18 (18.37%) ASP.NET
11 17 (17.35%) WCF
12 16 (16.33%) RESTful
13 12 (12.24%) NancyFx
Miscellaneous
1 35 (35.71%) Foreign Exchange (FX)
2 29 (29.59%) Greenfield Project
3 26 (26.53%) Hedge funds
4 17 (17.35%) Fixed Income
5 16 (16.33%) Market Risk
6 15 (15.31%) Credit Risk
6 15 (15.31%) Enterprise Software
7 4 (4.08%) User Experience
7 4 (4.08%) Virtual Team
8 3 (3.06%) Analytical Skills
9 2 (2.04%) Derivative
9 2 (2.04%) Fintech
10 1 (1.02%) Clustering
Operating Systems
1 4 (4.08%) Windows
2 3 (3.06%) Android
3 1 (1.02%) Apple iOS
Processes & Methodologies
1 78 (79.59%) Agile Software Development
2 58 (59.18%) MVVM
3 31 (31.63%) Complex Event Processing
4 27 (27.55%) BDD
5 25 (25.51%) CQRS
6 23 (23.47%) Technical Analysis
7 21 (21.43%) Continuous Improvement
8 20 (20.41%) Scrum
9 17 (17.35%) Multithreading
10 16 (16.33%) TDD
11 15 (15.31%) Integration Testing
11 15 (15.31%) Stress Testing
11 15 (15.31%) Test Scripting
12 14 (14.29%) Electronic Trading
13 11 (11.22%) Software Engineering
14 9 (9.18%) Continuous Integration
14 9 (9.18%) Pair Programming
14 9 (9.18%) SDLC
15 7 (7.14%) Migration
15 7 (7.14%) User Acceptance Testing
Programming Languages
1 89 (90.82%) C#
2 56 (57.14%) JavaScript
3 35 (35.71%) SQL
4 15 (15.31%) T-SQL
5 14 (14.29%) Java
6 6 (6.12%) XAML
7 4 (4.08%) TypeScript
8 2 (2.04%) Kotlin
Qualifications
1 7 (7.14%) Degree
2 1 (1.02%) Numerate Degree
Systems Management
1 3 (3.06%) MOM
2 1 (1.02%) BladeLogic
Vendors
1 29 (29.59%) Microsoft
2 4 (4.08%) TIBCO
3 2 (2.04%) DevExpress
3 2 (2.04%) Infragistics
3 2 (2.04%) Solace
4 1 (1.02%) Oracle