Period
to 9 April 2020

The following table provides summary statistics for permanent job vacancies 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 6 months to 9 April 2020 with a comparison to the same period in the previous 2 years.

Reactive Extensions for .NET (Rx.NET)
UK
6 months to
9 Apr 2020
Same period 2019 Same period 2018
Rank 895 1054 1106
Rank change year-on-year +159 +52 +27
Permanent jobs citing Reactive Extensions 87 77 103
As % of all permanent jobs advertised in the UK 0.076% 0.052% 0.058%
As % of the Libraries, Frameworks & Software Standards category 0.19% 0.13% 0.14%
Number of salaries quoted 30 51 73
Median annual salary £70,000 £67,500 £60,000
Median salary % change year-on-year +3.70% +12.50% +11.11%
10th Percentile £47,375 £45,000 £47,500
90th Percentile £90,500 £85,000 £84,750
UK excluding London median annual salary £60,000 £50,000 £57,500
% change year-on-year +20.00% -13.04% +27.78%

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 permanent job vacancies with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
UK
Permanent vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 45,355 58,444 72,073
As % of all permanent IT jobs advertised in the UK 39.38% 39.22% 40.67%
Number of salaries quoted 37,310 47,904 60,893
Median annual salary £55,000 £52,500 £50,000
Median salary % change year-on-year +4.76% +5.00% +5.26%
10th Percentile £32,500 £31,250 £30,250
90th Percentile £90,000 £85,000 £79,200
UK excluding London median annual salary £47,500 £45,000 £43,500
% change year-on-year +5.56% +3.45% +2.35%

Reactive Extensions
Job Vacancy Trend

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

Job vacancy trend for Reactive Extensions in the UK

Reactive Extensions
Salary Trend

3-month moving average salary quoted in jobs citing Reactive Extensions.

Salary trend for Reactive Extensions in the UK

Reactive Extensions
Salary Histogram

Salary distribution for jobs citing Reactive Extensions over the 6 months to 9 April 2020.

Salary histogram for Reactive Extensions in the UK

Reactive Extensions
Top 8 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Reactive Extensions within the UK over the 6 months to 9 April 2020. 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
Permanent
IT Job Ads
Median Salary
Past 6 Months
Median Salary
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +145 87 £70,000 +3.70% 6
London +118 79 £70,000 -3.45% 6
UK excluding London +127 8 £60,000 +20.00%
East of England +43 4 £50,000 -
South East +76 2 £66,250 +76.67%
North of England +61 2 £65,000 +23.81%
North West +58 2 £65,000 +23.81%
Work from Home +19 1 £47,500 -9.52%

For the 6 months to 9 April 2020, IT jobs citing Reactive Extensions also mentioned the following skills in order of popularity. The figures indicate the absolute number co-occurrences and as a proportion of all permanent job ads with a requirement for Reactive Extensions.

1 82 (94.25%) C#
2 79 (90.80%) .NET
3 76 (87.36%) Agile Software Development
4 55 (63.22%) F#
5 49 (56.32%) TDD
6 33 (37.93%) Redux
6 33 (37.93%) .NET Core
6 33 (37.93%) React
7 32 (36.78%) TypeScript
7 32 (36.78%) Azure
7 32 (36.78%) AWS
8 31 (35.63%) REST
8 31 (35.63%) Kibana
8 31 (35.63%) ActiveMQ
8 31 (35.63%) Grafana
9 29 (33.33%) Event Store
10 28 (32.18%) SQL
11 27 (31.03%) OOD
12 24 (27.59%) E-Commerce
12 24 (27.59%) MySQL
12 24 (27.59%) OOA/OOD
12 24 (27.59%) Computer Science
12 24 (27.59%) Games
12 24 (27.59%) Data Structures
12 24 (27.59%) Algorithms
12 24 (27.59%) Functional Programming
12 24 (27.59%) GitHub
12 24 (27.59%) Algorithmic Trading
12 24 (27.59%) Multithreading
12 24 (27.59%) Proprietary Trading

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 1 (1.15%) CMS
1 1 (1.15%) Liferay
1 1 (1.15%) Sitecore CMS
Business Applications
1 5 (5.75%) Dynamics CRM
Cloud Services
1 32 (36.78%) AWS
1 32 (36.78%) Azure
2 24 (27.59%) GitHub
3 1 (1.15%) Dynamics 365
3 1 (1.15%) Google Play
3 1 (1.15%) TestFlight
Communications & Networking
1 1 (1.15%) Internet
Database & Business Intelligence
1 29 (33.33%) Event Store
2 24 (27.59%) MySQL
3 7 (8.05%) MongoDB
4 5 (5.75%) SQL Server Reporting Services
5 2 (2.30%) SQL Server
Development Applications
1 17 (19.54%) Octopus Deploy
1 17 (19.54%) TeamCity
2 5 (5.75%) Team Foundation Server
3 2 (2.30%) Git (software)
4 1 (1.15%) Ant
4 1 (1.15%) Babel
4 1 (1.15%) dotCover
4 1 (1.15%) git-flow
4 1 (1.15%) Jasmine
4 1 (1.15%) Karma Test Runner
4 1 (1.15%) Maven
4 1 (1.15%) Moq
4 1 (1.15%) MSBuild
4 1 (1.15%) NSubstitute
4 1 (1.15%) NUnit
4 1 (1.15%) Visual Studio
4 1 (1.15%) webpack
General
1 24 (27.59%) Games
2 2 (2.30%) Finance
2 2 (2.30%) Retail
3 1 (1.15%) Banking
Job Titles
1 86 (98.85%) Developer
2 70 (80.46%) C# Developer
3 48 (55.17%) F# Developer
4 18 (20.69%) C# WPF Developer
4 18 (20.69%) WPF Developer
5 6 (6.90%) Full Stack Developer
6 5 (5.75%) .NET Developer
7 4 (4.60%) JavaScript Developer
7 4 (4.60%) Senior Developer
8 3 (3.45%) C# .NET Developer
8 3 (3.45%) Lead Developer
8 3 (3.45%) Mobile Developer
8 3 (3.45%) React Developer
9 2 (2.30%) C# Developer - Electronic Trading
9 2 (2.30%) Electronic Trading Developer
9 2 (2.30%) Front End Developer (Client-Side Developer)
9 2 (2.30%) Junior
9 2 (2.30%) Junior C# Developer
9 2 (2.30%) Junior Developer
10 1 (1.15%) Software Engineer
Libraries, Frameworks & Software Standards
1 79 (90.80%) .NET
2 33 (37.93%) .NET Core
2 33 (37.93%) React
2 33 (37.93%) Redux
3 31 (35.63%) ActiveMQ
3 31 (35.63%) REST
4 24 (27.59%) Akka.NET
5 20 (22.99%) WPF
6 18 (20.69%) WebSockets
7 17 (19.54%) SignalR
8 7 (8.05%) HTML
9 5 (5.75%) .NET Framework
9 5 (5.75%) AngularJS
9 5 (5.75%) HTML5
9 5 (5.75%) Managed Extensibility Framework
9 5 (5.75%) WCF
10 4 (4.60%) Silverlight
11 3 (3.45%) LINQ
12 2 (2.30%) React Native
12 2 (2.30%) RxJS
Miscellaneous
1 24 (27.59%) Algorithms
1 24 (27.59%) Cloud Native
1 24 (27.59%) Data Structures
2 3 (3.45%) Enterprise Software
2 3 (3.45%) Mobile App
3 2 (2.30%) Greenfield Project
3 2 (2.30%) User Experience
3 2 (2.30%) Virtual Team
4 1 (1.15%) Fixed Income
4 1 (1.15%) Kindle
Operating Systems
1 5 (5.75%) Windows
2 3 (3.45%) Android
2 3 (3.45%) Apple iOS
Processes & Methodologies
1 76 (87.36%) Agile Software Development
2 49 (56.32%) TDD
3 27 (31.03%) OOD
4 24 (27.59%) Algorithmic Trading
4 24 (27.59%) Computer Science
4 24 (27.59%) E-Commerce
4 24 (27.59%) Functional Programming
4 24 (27.59%) Multithreading
4 24 (27.59%) OOA/OOD
4 24 (27.59%) Problem-Solving
4 24 (27.59%) Proprietary Trading
5 17 (19.54%) Fintech
5 17 (19.54%) Kanban
6 16 (18.39%) Event-Driven Architecture
7 8 (9.20%) MVVM
7 8 (9.20%) Test Automation
8 5 (5.75%) CRM
8 5 (5.75%) Workflow
9 4 (4.60%) BDD
9 4 (4.60%) Mentoring
Programming Languages
1 82 (94.25%) C#
2 55 (63.22%) F#
3 32 (36.78%) TypeScript
4 28 (32.18%) SQL
5 11 (12.64%) JavaScript
6 6 (6.90%) Java
7 4 (4.60%) XAML
8 3 (3.45%) Apple Swift
8 3 (3.45%) ES6
8 3 (3.45%) Objective-C
9 1 (1.15%) C
Qualifications
1 2 (2.30%) Degree
2 1 (1.15%) Computer Science Degree
2 1 (1.15%) MCITP
2 1 (1.15%) Microsoft Certification
Systems Management
1 31 (35.63%) Grafana
1 31 (35.63%) Kibana
2 5 (5.75%) logstash
Vendors
1 4 (4.60%) Microsoft
2 1 (1.15%) Google
2 1 (1.15%) Sitecore
2 1 (1.15%) Solace
2 1 (1.15%) TIBCO
2 1 (1.15%) Xamarin