Period
to 22 November 2017

The following table provides summary statistics for contract job vacancies 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 22 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)
UK
6 months to
22 Nov 2017
Same period 2016 Same period 2015
Rank 781 864 826
Rank change year-on-year +83 -38 -36
Contract jobs citing Reactive Extensions 103 35 78
As % of all contract IT jobs advertised in the UK 0.100% 0.033% 0.069%
As % of the Libraries, Frameworks & Software Standards category 0.31% 0.11% 0.24%
Number of daily rates quoted 96 31 66
UK median daily rate £600 £550 £500
Median daily rate % change year-on-year +9.09% +10.00% -11.11%
10th Percentile £509 £369 £368
90th Percentile £688 £675 £656
UK excluding London median daily rate £550 £500 £398
% change year-on-year +10.00% +25.63% -0.50%
Number of hourly rates quoted 0 0 0
UK median hourly rate - - -
UK excluding 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 with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
UK
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 33013 32000 31983
As % of all contract IT jobs advertised in the UK 32.00% 30.35% 28.36%
Number of daily rates quoted 23308 22171 21922
UK median daily rate £450 £425 £410
Median daily rate % change year-on-year +5.88% +3.66% +2.50%
10th Percentile £313 £300 £275
90th Percentile £625 £588 £588
UK excluding London median daily rate £400 £388 £375
% change year-on-year +3.23% +3.33% +7.14%
Number of hourly rates quoted 381 364 549
UK median hourly rate £40.00 £37.50 £37.50
Median hourly rate % change year-on-year +6.67% - +8.70%
10th Percentile £18.50 £14.37 £15.00
90th Percentile £52.50 £51.40 £54.92
UK excluding London median hourly rate £41.00 £37.00 £37.50
% change year-on-year +10.81% -1.33% +10.74%

Reactive Extensions
Job Vacancy Trend

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

Job vacancy trend for Reactive Extensions in the UK

Reactive Extensions
Contractor Daily Rate Trend

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

Contractor daily rate trend for Reactive Extensions in the UK

Reactive Extensions
Contractor Daily Rate Histogram

The daily rate distribution of IT jobs citing Reactive Extensions over the 6 months to 22 November 2017.

Contractor daily rate histogram for Reactive Extensions in the UK

Reactive Extensions
Top 4 Contract Locations

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 UK over the 6 months to 22 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
England +82 102 £600 +9.09% 11
London +44 101 £600 - 8
UK excluding London +25 1 £550 +10.00% 3
South East +5 1 £550 +10.00%

For the 6 months to 22 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 with a requirement for Reactive Extensions.

1 94 (91.26%) C#
2 91 (88.35%) .NET
3 80 (77.67%) Agile Software Development
4 65 (63.11%) Finance
5 60 (58.25%) MVVM
6 58 (56.31%) JavaScript
7 54 (52.43%) Banking
8 52 (50.49%) NoSQL
9 51 (49.51%) MongoDB
10 50 (48.54%) AngularJS
11 48 (46.60%) WPF
12 47 (45.63%) Front Office
13 42 (40.78%) Subversion
14 40 (38.83%) React
15 38 (36.89%) Investment Banking
16 37 (35.92%) Foreign Exchange (FX)
16 37 (35.92%) SQL
17 32 (31.07%) Complex Event Processing
17 32 (31.07%) ASP.NET Web API
18 31 (30.10%) Greenfield Project
19 29 (28.16%) Microsoft
20 28 (27.18%) HTML
20 28 (27.18%) .NET Framework
21 27 (26.21%) Redux
21 27 (26.21%) BDD
22 26 (25.24%) HTML5
22 26 (25.24%) Hedge funds
22 26 (25.24%) Git (software)
22 26 (25.24%) NUnit
22 26 (25.24%) SignalR

Reactive Extensions
Co-occurring IT Skills 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 (24.27%) NServiceBus
2 6 (5.83%) Apache Spark
Applications
1 1 (0.97%) Microsoft Excel
Business Applications
1 3 (2.91%) RMDS
Cloud Services
1 3 (2.91%) GitHub
2 1 (0.97%) Microsoft Azure
Database & Business Intelligence
1 52 (50.49%) NoSQL
2 51 (49.51%) MongoDB
3 19 (18.45%) SQL Server
4 18 (17.48%) Relational Database
5 10 (9.71%) SQL Server Reporting Services
6 7 (6.80%) Big Data
7 6 (5.83%) Redis
7 6 (5.83%) SQL Server 2012
8 2 (1.94%) SQLite
9 1 (0.97%) Apache Cassandra
9 1 (0.97%) Azure SQL Database
9 1 (0.97%) DocumentDB
9 1 (0.97%) HBase
9 1 (0.97%) OLAP
9 1 (0.97%) Oracle Database
9 1 (0.97%) RDBMS
Development Applications
1 42 (40.78%) Subversion
2 26 (25.24%) Git (software)
2 26 (25.24%) NUnit
2 26 (25.24%) SpecFlow
3 16 (15.53%) Atlassian Bamboo
3 16 (15.53%) JIRA
4 7 (6.80%) Gradle
4 7 (6.80%) JUnit
4 7 (6.80%) Maven
4 7 (6.80%) Mockito
5 5 (4.85%) TeamCity
6 4 (3.88%) Visual Studio
7 2 (1.94%) CodeRush
7 2 (1.94%) ReSharper
8 1 (0.97%) MSBuild
8 1 (0.97%) NuGet
8 1 (0.97%) Team Foundation Server
General
1 65 (63.11%) Finance
2 54 (52.43%) Banking
3 47 (45.63%) Front Office
4 38 (36.89%) Investment Banking
5 2 (1.94%) Pharmaceutical
5 2 (1.94%) Retail
Job Titles
1 102 (99.03%) Developer
2 80 (77.67%) C# Developer
3 31 (30.10%) Full Stack Developer
3 31 (30.10%) WPF Developer
4 28 (27.18%) C# WPF Developer
5 18 (17.48%) JavaScript Developer
5 18 (17.48%) Lead Developer
5 18 (17.48%) Senior Developer
6 15 (14.56%) Credit Risk Developer
6 15 (14.56%) Lead C# Developer
7 13 (12.62%) Angular Developer
8 12 (11.65%) Tools Developer
9 10 (9.71%) Market Risk Developer
10 9 (8.74%) C# WCF Developer
10 9 (8.74%) WCF Developer
11 8 (7.77%) .NET Developer
11 8 (7.77%) C# Developer - Electronic Trading
11 8 (7.77%) Electronic Trading Developer
11 8 (7.77%) Senior .NET Developer
12 7 (6.80%) Java Developer
Libraries, Frameworks & Software Standards
1 91 (88.35%) .NET
2 50 (48.54%) AngularJS
3 48 (46.60%) WPF
4 40 (38.83%) React
5 32 (31.07%) ASP.NET Web API
6 28 (27.18%) .NET Framework
6 28 (27.18%) HTML
7 27 (26.21%) Redux
8 26 (25.24%) HTML5
8 26 (25.24%) SignalR
9 25 (24.27%) Akka
9 25 (24.27%) Angular 2
9 25 (24.27%) Kafka
9 25 (24.27%) RabbitMQ
9 25 (24.27%) WebSockets
10 22 (21.36%) Task Parallel Library
11 19 (18.45%) WCF
12 18 (17.48%) ASP.NET
13 16 (15.53%) RESTful
14 12 (11.65%) NancyFx
Miscellaneous
1 37 (35.92%) Foreign Exchange (FX)
2 31 (30.10%) Greenfield Project
3 26 (25.24%) Hedge funds
4 19 (18.45%) Fixed Income
5 17 (16.50%) Market Risk
6 16 (15.53%) Credit Risk
6 16 (15.53%) Enterprise Software
7 4 (3.88%) User Experience
7 4 (3.88%) Virtual Team
8 3 (2.91%) Analytical Skills
9 2 (1.94%) Derivative
9 2 (1.94%) Fintech
10 1 (0.97%) Clustering
10 1 (0.97%) Grid Computing
Operating Systems
1 4 (3.88%) Windows
2 3 (2.91%) Android
3 1 (0.97%) Apple iOS
Processes & Methodologies
1 80 (77.67%) Agile Software Development
2 60 (58.25%) MVVM
3 32 (31.07%) Complex Event Processing
4 27 (26.21%) BDD
5 25 (24.27%) CQRS
6 24 (23.30%) Technical Analysis
7 21 (20.39%) Continuous Improvement
7 21 (20.39%) Scrum
8 17 (16.50%) Multithreading
9 16 (15.53%) Integration Testing
9 16 (15.53%) Stress Testing
9 16 (15.53%) TDD
9 16 (15.53%) Test Scripting
10 15 (14.56%) Electronic Trading
11 11 (10.68%) Software Engineering
12 9 (8.74%) Continuous Integration
12 9 (8.74%) Pair Programming
12 9 (8.74%) SDLC
13 8 (7.77%) OO
13 8 (7.77%) OOD
Programming Languages
1 94 (91.26%) C#
2 58 (56.31%) JavaScript
3 37 (35.92%) SQL
4 16 (15.53%) T-SQL
5 14 (13.59%) Java
6 6 (5.83%) XAML
7 4 (3.88%) TypeScript
8 2 (1.94%) Kotlin
Qualifications
1 7 (6.80%) Degree
2 1 (0.97%) Numerate Degree
Systems Management
1 3 (2.91%) MOM
2 1 (0.97%) BladeLogic
Vendors
1 29 (28.16%) Microsoft
2 4 (3.88%) TIBCO
3 3 (2.91%) DevExpress
3 3 (2.91%) Infragistics
4 2 (1.94%) Solace
5 1 (0.97%) Oracle