Period
to 20 November 2017

The following table provides summary statistics for contract job vacancies advertised in the City of 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)
Central London > City of London
6 months to
20 Nov 2017
Same period 2016 Same period 2015
Rank 236 240 250
Rank change year-on-year +4 +10 +24
Contract jobs citing Reactive Extensions 10 8 22
As % of all contract IT jobs advertised in the City of London 0.14% 0.12% 0.24%
As % of the Libraries, Frameworks & Software Standards category 0.37% 0.34% 0.77%
Number of daily rates quoted 9 8 21
City of London median daily rate £530 £600 £625
Median daily rate % change year-on-year -11.67% -4.00% -
10th Percentile £498 £513 £375
90th Percentile £678 £675 £688
Central London median daily rate £530 £600 £625
% change year-on-year -11.67% -4.00% -
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London 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 the City of London with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
City of London
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 2694 2367 2843
As % of all contract IT jobs advertised in the City of London 38.01% 35.89% 31.10%
Number of daily rates quoted 2259 2006 2349
City of London median daily rate £513 £475 £475
Median daily rate % change year-on-year +7.89% - +5.56%
10th Percentile £363 £325 £313
90th Percentile £675 £638 £638
Central London median daily rate £500 £475 £463
% change year-on-year +5.26% +2.70% +8.82%
Number of hourly rates quoted 10 4 14
City of London median hourly rate £22.99 £35.00 £38.75
Median hourly rate % change year-on-year -34.31% -9.68% +29.17%
10th Percentile £20.28 £19.00 £12.40
90th Percentile £33.75 £56.31 £66.25
Central London median hourly rate £21.50 £35.00 £38.75
% change year-on-year -38.57% -9.68% +29.17%

Reactive Extensions
Job Vacancy Trend in the City of London

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

Job vacancy trend for Reactive Extensions in the City of London

Reactive Extensions
Contractor Daily Rate Trend in the City of London

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

Contractor daily rate trend for Reactive Extensions in the City of London

Reactive Extensions
Contractor Daily Rate Histogram in the City of London

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

Contractor daily rate histogram for Reactive Extensions in the City of London

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 City of London region with a requirement for Reactive Extensions.

1 9 (90.00%) .NET
2 8 (80.00%) C#
2 8 (80.00%) Agile Software Development
3 7 (70.00%) Finance
4 5 (50.00%) JavaScript
4 5 (50.00%) AngularJS
4 5 (50.00%) ASP.NET Web API
5 4 (40.00%) SpecFlow
5 4 (40.00%) ASP.NET
5 4 (40.00%) Scrum
5 4 (40.00%) TDD
5 4 (40.00%) Banking
5 4 (40.00%) Subversion
5 4 (40.00%) Git (software)
5 4 (40.00%) BDD
5 4 (40.00%) NoSQL
6 3 (30.00%) MongoDB
6 3 (30.00%) RabbitMQ
6 3 (30.00%) WebSockets
6 3 (30.00%) MVVM
6 3 (30.00%) Hedge funds
6 3 (30.00%) Complex Event Processing
6 3 (30.00%) .NET Framework
6 3 (30.00%) WPF
6 3 (30.00%) LINQ
6 3 (30.00%) Continuous Integration
6 3 (30.00%) Electronic Trading
6 3 (30.00%) NUnit
6 3 (30.00%) Front Office
6 3 (30.00%) Foreign Exchange (FX)

Reactive Extensions
Co-occurring 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:

Application Platforms
1 3 (30.00%) NServiceBus
Applications
1 1 (10.00%) Microsoft Excel
Business Applications
1 1 (10.00%) RMDS
Cloud Services
1 1 (10.00%) GitHub
Database & Business Intelligence
1 4 (40.00%) NoSQL
2 3 (30.00%) MongoDB
3 2 (20.00%) SQL Server
4 1 (10.00%) Apache Cassandra
4 1 (10.00%) Big Data
4 1 (10.00%) DocumentDB
4 1 (10.00%) HBase
4 1 (10.00%) Oracle Database
4 1 (10.00%) RDBMS
4 1 (10.00%) Relational Database
Development Applications
1 4 (40.00%) Git (software)
1 4 (40.00%) SpecFlow
1 4 (40.00%) Subversion
2 3 (30.00%) NUnit
3 2 (20.00%) Visual Studio
4 1 (10.00%) CodeRush
4 1 (10.00%) MSBuild
4 1 (10.00%) ReSharper
4 1 (10.00%) Team Foundation Server
4 1 (10.00%) TeamCity
General
1 7 (70.00%) Finance
2 4 (40.00%) Banking
3 3 (30.00%) Front Office
4 1 (10.00%) Investment Banking
Job Titles
1 10 (100.00%) Developer
2 4 (40.00%) C# Developer
3 3 (30.00%) Full Stack Developer
3 3 (30.00%) Lead Developer
3 3 (30.00%) Technical Developer
3 3 (30.00%) Technical Leader
4 2 (20.00%) JavaScript Developer
4 2 (20.00%) WPF Developer
5 1 (10.00%) C# Developer - Electronic Trading
5 1 (10.00%) C# WPF Developer
5 1 (10.00%) Electronic Trading Developer
5 1 (10.00%) Senior Developer
5 1 (10.00%) Senior WPF Developer
Libraries, Frameworks & Software Standards
1 9 (90.00%) .NET
2 5 (50.00%) AngularJS
2 5 (50.00%) ASP.NET Web API
3 4 (40.00%) ASP.NET
4 3 (30.00%) .NET Framework
4 3 (30.00%) Akka
4 3 (30.00%) Angular 2
4 3 (30.00%) Kafka
4 3 (30.00%) LINQ
4 3 (30.00%) RabbitMQ
4 3 (30.00%) Redux
4 3 (30.00%) SignalR
4 3 (30.00%) WebSockets
4 3 (30.00%) WPF
5 2 (20.00%) CSS
5 2 (20.00%) HTML
5 2 (20.00%) HTML5
5 2 (20.00%) Task Parallel Library
5 2 (20.00%) TIBCO EMS
6 1 (10.00%) SOAP
Miscellaneous
1 3 (30.00%) Foreign Exchange (FX)
1 3 (30.00%) Greenfield Project
1 3 (30.00%) Hedge funds
2 1 (10.00%) Analytical Skills
2 1 (10.00%) Clustering
2 1 (10.00%) User Experience
Operating Systems
1 1 (10.00%) Android
1 1 (10.00%) Apple iOS
1 1 (10.00%) Windows
Processes & Methodologies
1 8 (80.00%) Agile Software Development
2 4 (40.00%) BDD
2 4 (40.00%) Scrum
2 4 (40.00%) TDD
3 3 (30.00%) Complex Event Processing
3 3 (30.00%) Continuous Integration
3 3 (30.00%) CQRS
3 3 (30.00%) Electronic Trading
3 3 (30.00%) MVVM
4 2 (20.00%) Continuous Delivery
4 2 (20.00%) Continuous Improvement
4 2 (20.00%) Low Latency
4 2 (20.00%) Multithreading
4 2 (20.00%) Test Automation
5 1 (10.00%) Asset Management
5 1 (10.00%) Inversion of Control
5 1 (10.00%) OO
5 1 (10.00%) OOD
5 1 (10.00%) Release Management
5 1 (10.00%) Unit Testing
Programming Languages
1 8 (80.00%) C#
2 5 (50.00%) JavaScript
3 1 (10.00%) SQL
3 1 (10.00%) XAML
Qualifications
1 1 (10.00%) Degree
1 1 (10.00%) Numerate Degree
Systems Management
1 1 (10.00%) BladeLogic
1 1 (10.00%) MOM
Vendors
1 2 (20.00%) Microsoft
1 2 (20.00%) TIBCO
2 1 (10.00%) Oracle