Period
to 26 June 2019

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 26 June 2019 with a comparison to the same period in the previous 2 years.

Reactive Extensions for .NET (Rx.NET)
UK
6 months to
26 Jun 2019
Same period 2018 Same period 2017
Rank 1019 1086 1123
Rank change year-on-year +67 +37 +78
Permanent jobs citing Reactive Extensions 80 105 66
As % of all permanent IT jobs advertised in the UK 0.055% 0.060% 0.038%
As % of the Libraries, Frameworks & Software Standards category 0.15% 0.15% 0.094%
Number of salaries quoted 35 79 48
UK median annual salary £60,000 £62,500 £58,750
Median salary % change year-on-year -4.00% +6.38% -18.97%
10th Percentile £45,000 £45,000 £41,250
90th Percentile £85,000 £85,500 £90,000
UK excluding London median annual salary £50,000 £55,000 £50,000
% change year-on-year -9.09% +10.00% +25.00%

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 55,009 70,679 70,511
As % of all permanent IT jobs advertised in the UK 38.08% 40.51% 40.61%
Number of salaries quoted 45,252 59,046 59,662
UK median annual salary £52,500 £50,000 £47,500
Median salary % change year-on-year +5.00% +5.26% -
10th Percentile £31,250 £31,250 £28,750
90th Percentile £86,250 £80,000 £76,250
UK excluding London median annual salary £45,000 £45,000 £42,500
% change year-on-year - +5.88% +3.66%

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
Salary Trend

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

Salary trend for Reactive Extensions in the UK

Reactive Extensions
Salary Histogram

The salary distribution of IT jobs citing Reactive Extensions over the 6 months to 26 June 2019.

Salary histogram for Reactive Extensions in the UK

Reactive Extensions
Top 6 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 26 June 2019. 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 +84 80 £60,000 -4.00% 1
London +71 62 £72,500 +11.54% 1
UK excluding London +56 18 £50,000 -9.09%
East of England +83 15 £47,500 -13.64%
South East +27 2 £56,250 +40.63%
South West +22 1 £85,000 +30.77%

For the 6 months to 26 June 2019, 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 67 (83.75%) C#
2 61 (76.25%) .NET
3 54 (67.50%) Agile Software Development
4 49 (61.25%) TDD
5 38 (47.50%) SQL
5 38 (47.50%) F#
6 34 (42.50%) Computer Science
7 33 (41.25%) Data Structures
8 30 (37.50%) Algorithms
9 28 (35.00%) OOA/OOD
10 27 (33.75%) Multithreading
11 26 (32.50%) Algorithmic Trading
11 26 (32.50%) GitHub
11 26 (32.50%) E-Commerce
11 26 (32.50%) OOD
11 26 (32.50%) Games
11 26 (32.50%) Akka.NET
12 23 (28.75%) JavaScript
13 21 (26.25%) Redux
13 21 (26.25%) React
14 20 (25.00%) HTML
14 20 (25.00%) Finance
14 20 (25.00%) TypeScript
15 18 (22.50%) WebSockets
16 15 (18.75%) WPF
16 15 (18.75%) Windows
17 14 (17.50%) Amazon AWS
18 13 (16.25%) Microsoft Azure
18 13 (16.25%) Microsoft
18 13 (16.25%) RxJS

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 2 (2.50%) NServiceBus
2 1 (1.25%) SharePoint
Business Applications
1 4 (5.00%) Dynamics CRM
Cloud Services
1 26 (32.50%) GitHub
2 14 (17.50%) Amazon AWS
3 13 (16.25%) Microsoft Azure
4 2 (2.50%) Amazon ECS
4 2 (2.50%) Amazon S3
4 2 (2.50%) Dynamics 365
Communications & Networking
1 10 (12.50%) Internet
Database & Business Intelligence
1 12 (15.00%) Event Store
1 12 (15.00%) MySQL
2 9 (11.25%) SQL Server Reporting Services
3 5 (6.25%) SQL Server
4 4 (5.00%) Relational Database
5 2 (2.50%) Amazon RDS
5 2 (2.50%) MongoDB
5 2 (2.50%) PostgreSQL
Development Applications
1 9 (11.25%) Team Foundation Server
2 8 (10.00%) Git (software)
3 4 (5.00%) Moq
3 4 (5.00%) NUnit
4 2 (2.50%) Subversion
4 2 (2.50%) Visual Studio
General
1 26 (32.50%) Games
2 20 (25.00%) Finance
3 4 (5.00%) Banking
4 2 (2.50%) Front Office
4 2 (2.50%) Retail
Job Titles
1 69 (86.25%) Developer
2 52 (65.00%) C# Developer
3 35 (43.75%) F# Developer
4 10 (12.50%) React Developer
5 8 (10.00%) Test Engineer
6 7 (8.75%) Senior Developer
7 6 (7.50%) C# WPF Developer
7 6 (7.50%) Front End Developer (Client-Side Developer)
7 6 (7.50%) WPF Developer
8 4 (5.00%) C# Web Developer
8 4 (5.00%) Lead Developer
8 4 (5.00%) Machine Learning Developer
8 4 (5.00%) Senior C# Developer
8 4 (5.00%) Senior WPF Developer
8 4 (5.00%) Web Developer
9 3 (3.75%) .NET Web Developer
9 3 (3.75%) ASP.NET Developer
9 3 (3.75%) HTML Developer
9 3 (3.75%) Software Test Engineer
9 3 (3.75%) SQL Developer
Libraries, Frameworks & Software Standards
1 61 (76.25%) .NET
2 26 (32.50%) Akka.NET
3 21 (26.25%) React
3 21 (26.25%) Redux
4 20 (25.00%) HTML
5 18 (22.50%) WebSockets
6 15 (18.75%) WPF
7 13 (16.25%) RxJS
8 12 (15.00%) .NET Core
8 12 (15.00%) ActiveMQ
8 12 (15.00%) REST
9 11 (13.75%) AngularJS
9 11 (13.75%) CSS
10 9 (11.25%) HTML5
10 9 (11.25%) Managed Extensibility Framework
10 9 (11.25%) WCF
11 8 (10.00%) Task Parallel Library
12 6 (7.50%) .NET Framework
13 4 (5.00%) Protocol Buffers
13 4 (5.00%) SignalR
Miscellaneous
1 33 (41.25%) Data Structures
2 30 (37.50%) Algorithms
3 12 (15.00%) User Experience
4 10 (12.50%) Virtual Team
5 9 (11.25%) Cloud Native
6 7 (8.75%) Enterprise Software
7 5 (6.25%) Equities
7 5 (6.25%) Greenfield Project
8 2 (2.50%) Fixed Income
9 1 (1.25%) Data Protection Act
9 1 (1.25%) Foreign Exchange (FX)
Operating Systems
1 15 (18.75%) Windows
2 6 (7.50%) Linux
Processes & Methodologies
1 54 (67.50%) Agile Software Development
2 49 (61.25%) TDD
3 34 (42.50%) Computer Science
4 28 (35.00%) OOA/OOD
5 27 (33.75%) Multithreading
6 26 (32.50%) Algorithmic Trading
6 26 (32.50%) E-Commerce
6 26 (32.50%) OOD
7 11 (13.75%) Analytics
8 10 (12.50%) Front End Development
8 10 (12.50%) Open Source
9 9 (11.25%) Artificial Intelligence
9 9 (11.25%) BDD
9 9 (11.25%) Functional Programming
9 9 (11.25%) MVVM
9 9 (11.25%) Problem-Solving
9 9 (11.25%) Proprietary Trading
9 9 (11.25%) Workflow
10 8 (10.00%) Mathematics
10 8 (10.00%) Software Testing
Programming Languages
1 67 (83.75%) C#
2 38 (47.50%) F#
2 38 (47.50%) SQL
3 23 (28.75%) JavaScript
4 20 (25.00%) TypeScript
5 9 (11.25%) ES6
6 7 (8.75%) XAML
7 4 (5.00%) PL/SQL
7 4 (5.00%) PowerShell
8 2 (2.50%) Go
Qualifications
1 10 (12.50%) Degree
2 2 (2.50%) Computer Science Degree
2 2 (2.50%) MCITP
2 2 (2.50%) Microsoft Certification
3 1 (1.25%) SC Cleared
3 1 (1.25%) Security Cleared
System Software
1 2 (2.50%) Docker
Systems Management
1 12 (15.00%) Grafana
1 12 (15.00%) Kibana
2 2 (2.50%) Terraform
Vendors
1 13 (16.25%) Microsoft
2 4 (5.00%) DevExpress
2 4 (5.00%) Oracle
3 1 (1.25%) CheckPoint