The following table provides summary statistics for permanent job vacancies advertised in London with a requirement for Reactive Extensions skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Reactive Extensions over the 3 months to 26 June 2017 with a comparison to the same period in the previous 2 years.

Reactive Extensions for .NET (Rx.NET)
England / London
3 months to
26 Jun 2017
Same period 2016 Same period 2015
Rank 588 611 656
Rank change year-on-year +23 +45  
Permanent jobs citing Reactive Extensions 25 27 14
As % of all permanent IT jobs advertised in London 0.068% 0.068% 0.031%
As % of the Libraries, Frameworks & Software Standards category 0.17% 0.17% 0.082%
Number of salaries quoted 14 26 13
Median salary £62,500 £75,000 £62,500
Median salary % change year-on-year -16.66% +20.00%  
90% offered a salary of more than £57,500 £44,250 £38,500
10% offered a salary of more than £90,000 £90,000 £84,500
UK excluding London median salary £55,000 £40,000 £47,500
% change year-on-year +37.50% -15.78%  

Reactive Extensions is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all permanent job vacancies advertised in London with a requirement for industry standards, technical specifications and software library and framework skills.

Software Library & Framework Skills
London
Permanent job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 14851 15941 17016
As % of all permanent IT job vacancies advertised in London 40.32% 40.39% 37.96%
Number of salaries quoted 12294 14089 14656
Median salary £57,500 £55,000 £55,000
Median salary % change year-on-year +4.54% -  
90% offered a salary of more than £40,000 £38,000 £35,000
10% offered a salary of more than £80,000 £75,000 £77,500
UK excluding London median salary £42,500 £40,000 £40,000
% change year-on-year +6.25% -  

Reactive Extensions
Job Vacancy Trend in London

The job posting trend of jobs advertised in London citing Reactive Extensions as a proportion of all permanent or contract IT jobs with a match in the Libraries, Frameworks & Software Standards category.

Job vacancy trend for Reactive Extensions in London

Reactive Extensions
Salary Trend in London

This chart provides the 3-month moving average for salaries quoted in permanent IT jobs citing Reactive Extensions in London.

Salary trend for Reactive Extensions in London

Reactive Extensions
Salary Histogram in London

The salary distribution of IT jobs citing Reactive Extensions in London over the 3 months to 26 June 2017.

Salary histogram for Reactive Extensions in London

Reactive Extensions
Job Locations in London

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Reactive Extensions within the London region over the 3 months to 26 June 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
Permanent
IT Job Ads
Median Salary
Last 3 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
Brentford - 2 £57,500 -
City of London - 2 - - 2
Reactive Extensions
England

For the 6 months to 26 June 2017, IT 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 job ads across the London region with a requirement for Reactive Extensions.

1 37 (92.50%) C#
2 36 (90.00%) .NET
3 24 (60.00%) Agile Software Development
4 22 (55.00%) TDD
5 21 (52.50%) Multithreading
6 19 (47.50%) SQL
7 17 (42.50%) Games
7 17 (42.50%) F#
8 16 (40.00%) WPF
9 13 (32.50%) HTML
9 13 (32.50%) HTML5
9 13 (32.50%) NoSQL
9 13 (32.50%) Akka
10 12 (30.00%) AngularJS
11 11 (27.50%) Software Engineering
12 10 (25.00%) Computer Science
13 9 (22.50%) Banking
13 9 (22.50%) Microsoft
13 9 (22.50%) React
13 9 (22.50%) CQRS
14 8 (20.00%) Low Latency
14 8 (20.00%) Data Structures
14 8 (20.00%) Algorithms
14 8 (20.00%) OOA/OOD
14 8 (20.00%) E-Commerce
14 8 (20.00%) OOD
14 8 (20.00%) .NET Framework
14 8 (20.00%) WCF
14 8 (20.00%) Algorithmic Trading
14 8 (20.00%) Task Parallel Library

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 2 (5.00%) IIS
1 2 (5.00%) NServiceBus
2 1 (2.50%) Oracle SOA Suite
Applications
1 1 (2.50%) Microsoft Excel
1 1 (2.50%) Microsoft Office
Business Applications
1 2 (5.00%) RMDS
Cloud Services
1 2 (5.00%) Amazon AWS
1 2 (5.00%) Microsoft Azure
Database & Business Intelligence
1 13 (32.50%) NoSQL
2 6 (15.00%) Event Store
2 6 (15.00%) SQL Server
3 3 (7.50%) Mixpanel
3 3 (7.50%) MongoDB
3 3 (7.50%) Redis
3 3 (7.50%) SQL Server 2008
3 3 (7.50%) SQL Server Reporting Services
3 3 (7.50%) SQLite
4 2 (5.00%) Apache Cassandra
4 2 (5.00%) Azure SQL Database
4 2 (5.00%) Couchbase
4 2 (5.00%) CouchDB
4 2 (5.00%) RavenDB
4 2 (5.00%) SQL Server Analysis Services
Development Applications
1 7 (17.50%) Atlassian Bamboo
2 6 (15.00%) JIRA
2 6 (15.00%) TeamCity
3 4 (10.00%) Git (software)
3 4 (10.00%) Jenkins
3 4 (10.00%) Octopus Deploy
4 3 (7.50%) Crashlytics
4 3 (7.50%) Gradle
4 3 (7.50%) NuGet
4 3 (7.50%) Subversion
5 2 (5.00%) CodeRush
5 2 (5.00%) JSUnit
5 2 (5.00%) JUnit
5 2 (5.00%) Moq
5 2 (5.00%) MSTest
5 2 (5.00%) NUnit
5 2 (5.00%) ReSharper
6 1 (2.50%) gulp
6 1 (2.50%) Jasmine
6 1 (2.50%) Protractor
General
1 17 (42.50%) Games
2 9 (22.50%) Banking
3 5 (12.50%) Finance
4 3 (7.50%) Investment Banking
5 1 (2.50%) Pharmaceutical
Job Titles
1 28 (70.00%) Developer
2 23 (57.50%) C# Developer
3 14 (35.00%) .NET Developer
4 11 (27.50%) C# .NET Developer
5 6 (15.00%) C# Software Engineer
5 6 (15.00%) Software Engineer
5 6 (15.00%) WPF Developer
6 5 (12.50%) Senior C# Software Engineer
6 5 (12.50%) Senior Software Engineer
7 4 (10.00%) .NET Software Engineer
7 4 (10.00%) C# WPF Developer
7 4 (10.00%) DevOps Engineer
7 4 (10.00%) Senior .NET Software Engineer
7 4 (10.00%) Senior DevOps
7 4 (10.00%) Senior DevOps Engineer
8 3 (7.50%) Senior Developer
8 3 (7.50%) SQL Developer
9 2 (5.00%) Market Risk Developer
9 2 (5.00%) Senior .NET Developer
9 2 (5.00%) Senior C# Developer
Libraries, Frameworks & Software Standards
1 36 (90.00%) .NET
2 16 (40.00%) WPF
3 13 (32.50%) Akka
3 13 (32.50%) HTML
3 13 (32.50%) HTML5
4 12 (30.00%) AngularJS
5 9 (22.50%) React
6 8 (20.00%) .NET Framework
6 8 (20.00%) Task Parallel Library
6 8 (20.00%) WCF
7 6 (15.00%) CSS
7 6 (15.00%) REST
7 6 (15.00%) RESTful
8 5 (12.50%) Entity Framework
9 4 (10.00%) Angular 2
9 4 (10.00%) Kafka
9 4 (10.00%) LINQ
9 4 (10.00%) Polymer
9 4 (10.00%) WebSockets
10 3 (7.50%) RxJS
Miscellaneous
1 10 (25.00%) Computer Science
2 8 (20.00%) Algorithms
2 8 (20.00%) Data Structures
3 7 (17.50%) Hedge funds
4 6 (15.00%) Xbox
5 4 (10.00%) Foreign Exchange (FX)
5 4 (10.00%) User Experience
6 3 (7.50%) Credit Risk
6 3 (7.50%) Enterprise Software
6 3 (7.50%) Fintech
6 3 (7.50%) Fixed Income
6 3 (7.50%) Market Risk
7 2 (5.00%) Blog
8 1 (2.50%) Equities
Operating Systems
1 5 (12.50%) Windows
2 3 (7.50%) Android
2 3 (7.50%) Apple iOS
3 2 (5.00%) Windows Server
3 2 (5.00%) Windows Server 2012
Processes & Methodologies
1 24 (60.00%) Agile Software Development
2 22 (55.00%) TDD
3 21 (52.50%) Multithreading
4 11 (27.50%) Software Engineering
5 9 (22.50%) CQRS
6 8 (20.00%) Algorithmic Trading
6 8 (20.00%) E-Commerce
6 8 (20.00%) Low Latency
6 8 (20.00%) OOA/OOD
6 8 (20.00%) OOD
7 7 (17.50%) DevOps
8 6 (15.00%) Continuous Integration
8 6 (15.00%) Domain-Driven Design
8 6 (15.00%) High Availability
8 6 (15.00%) MVVM
8 6 (15.00%) Open Source
8 6 (15.00%) SOA
8 6 (15.00%) SOLID
9 5 (12.50%) Mathematics
9 5 (12.50%) OO
Programming Languages
1 37 (92.50%) C#
2 19 (47.50%) SQL
3 17 (42.50%) F#
4 7 (17.50%) JavaScript
5 5 (12.50%) Java
5 5 (12.50%) T-SQL
6 3 (7.50%) Kotlin
7 2 (5.00%) C++
7 2 (5.00%) PowerShell
8 1 (2.50%) TypeScript
Qualifications
1 3 (7.50%) Degree
2 2 (5.00%) Computer Science Degree
Quality Assurance & Compliance
1 1 (2.50%) PMO
1 1 (2.50%) QA
System Software
1 6 (15.00%) Docker
Systems Management
1 2 (5.00%) MOM
1 2 (5.00%) Opscode Chef
1 2 (5.00%) Puppet
Vendors
1 9 (22.50%) Microsoft
2 6 (15.00%) Google
3 2 (5.00%) TIBCO
4 1 (2.50%) Oracle
4 1 (2.50%) Sitecore
City, London
Understanding Recruitment
Salary: £45000 - £65000 per annum + benefits
Posted: 18 hours ago
London
Westbourne Partners
Salary: Up to £90,000 per annum
Posted: 2 days ago
City, London
Understanding Recruitment
Salary: £45000 - £65000 per annum + benefits
Posted: 6 days ago
London
McGregor Boyall
Salary: £60000 - £90000 per annum + Bonus
Posted: 4 days ago
London
Client Server
Salary: £80,000 to £90,000 + bonus + benefits
Posted: 25 days ago