Period
to 20 January 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 20 January 2020 with a comparison to the same period in the previous 2 years.

Reactive Extensions for .NET (Rx.NET)
UK
6 months to
20 Jan 2020
Same period 2019 Same period 2018
Rank 929 1035 1074
Rank change year-on-year +106 +39 +68
Permanent jobs citing Reactive Extensions 89 90 114
As % of all permanent IT jobs advertised in the UK 0.071% 0.060% 0.066%
As % of the Libraries, Frameworks & Software Standards category 0.18% 0.15% 0.16%
Number of salaries quoted 24 68 76
UK median annual salary £65,000 £67,500 £61,250
Median salary % change year-on-year -3.70% +10.20% +28.95%
10th Percentile £42,250 £46,250 £47,500
90th Percentile £87,625 £82,375 £85,000
UK excluding London median annual salary £65,000 £52,500 £57,500
% change year-on-year +23.81% -8.70% +21.05%

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 48,700 59,234 70,063
As % of all permanent IT jobs advertised in the UK 38.84% 39.60% 40.47%
Number of salaries quoted 39,977 48,492 58,789
UK 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 £30,000
90th Percentile £90,000 £85,000 £77,500
UK excluding London median annual salary £47,000 £45,000 £42,500
% change year-on-year +4.44% +5.88% -

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 20 January 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 20 January 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 +88 86 £65,000 -3.70% 9
London +65 72 £75,000 +3.45% 9
UK excluding London +71 17 £65,000 +23.81%
South East +53 8 £65,000 +73.33%
East of England +50 5 £50,000 -4.76%
Wales - 3 £40,000 -
North of England +58 1 - -
North West +37 1 - -

For the 6 months to 20 January 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 80 (89.89%) .NET
2 77 (86.52%) C#
3 68 (76.40%) Agile Software Development
4 50 (56.18%) F#
5 48 (53.93%) TDD
6 41 (46.07%) React
7 36 (40.45%) TypeScript
8 33 (37.08%) SQL
9 31 (34.83%) .NET Core
10 29 (32.58%) Multithreading
11 27 (30.34%) OOD
11 27 (30.34%) Redux
12 26 (29.21%) Azure
12 26 (29.21%) AWS
13 25 (28.09%) REST
13 25 (28.09%) Data Structures
13 25 (28.09%) Algorithms
13 25 (28.09%) Kibana
13 25 (28.09%) Functional Programming
13 25 (28.09%) GitHub
13 25 (28.09%) Event Store
13 25 (28.09%) Proprietary Trading
13 25 (28.09%) E-Commerce
13 25 (28.09%) Games
13 25 (28.09%) MySQL
13 25 (28.09%) OOA/OOD
13 25 (28.09%) ActiveMQ
13 25 (28.09%) Computer Science
13 25 (28.09%) Algorithmic Trading
13 25 (28.09%) Akka.NET

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:

Business Applications
1 6 (6.74%) Dynamics CRM
Cloud Services
1 26 (29.21%) AWS
1 26 (29.21%) Azure
2 25 (28.09%) GitHub
3 1 (1.12%) Dynamics 365
3 1 (1.12%) Google Play
3 1 (1.12%) npm
3 1 (1.12%) TestFlight
3 1 (1.12%) Yarn
Communications & Networking
1 2 (2.25%) Internet
Database & Business Intelligence
1 25 (28.09%) Event Store
1 25 (28.09%) MySQL
2 6 (6.74%) SQL Server Reporting Services
Development Applications
1 16 (17.98%) TeamCity
2 10 (11.24%) Octopus Deploy
3 9 (10.11%) Git (software)
4 7 (7.87%) webpack
5 6 (6.74%) JIRA
5 6 (6.74%) Team Foundation Server
6 1 (1.12%) git-flow
6 1 (1.12%) Visual Studio
General
1 25 (28.09%) Games
2 6 (6.74%) Finance
3 5 (5.62%) Front Office
4 3 (3.37%) Retail
5 1 (1.12%) Banking
5 1 (1.12%) Investment Banking
Job Titles
1 86 (96.63%) Developer
2 65 (73.03%) C# Developer
3 50 (56.18%) F# Developer
4 14 (15.73%) C# WPF Developer
4 14 (15.73%) WPF Developer
5 7 (7.87%) .NET Developer
6 6 (6.74%) Full Stack Developer
6 6 (6.74%) Lead Developer
7 5 (5.62%) Front Office Developer
7 5 (5.62%) React Developer
7 5 (5.62%) Senior Developer
8 4 (4.49%) Mobile Developer
9 3 (3.37%) Software Engineer
10 2 (2.25%) JavaScript Developer
10 2 (2.25%) Machine Learning Developer
10 2 (2.25%) Senior Software Engineer
11 1 (1.12%) Agile Developer
11 1 (1.12%) C# .NET Developer
11 1 (1.12%) C# Developer - Electronic Trading
11 1 (1.12%) Electronic Trading Developer
Libraries, Frameworks & Software Standards
1 80 (89.89%) .NET
2 41 (46.07%) React
3 31 (34.83%) .NET Core
4 27 (30.34%) Redux
5 25 (28.09%) ActiveMQ
5 25 (28.09%) Akka.NET
5 25 (28.09%) REST
6 18 (20.22%) WPF
7 16 (17.98%) WebSockets
8 12 (13.48%) HTML
9 10 (11.24%) SignalR
10 8 (8.99%) .NET Framework
11 6 (6.74%) AngularJS
11 6 (6.74%) Managed Extensibility Framework
11 6 (6.74%) Protocol Buffers
11 6 (6.74%) WCF
12 5 (5.62%) CSS
12 5 (5.62%) HTML5
12 5 (5.62%) LINQ
12 5 (5.62%) Silverlight
Miscellaneous
1 25 (28.09%) Algorithms
1 25 (28.09%) Cloud Native
1 25 (28.09%) Data Structures
2 4 (4.49%) Enterprise Software
2 4 (4.49%) Equities
2 4 (4.49%) Mobile App
3 3 (3.37%) Greenfield Project
3 3 (3.37%) Virtual Team
4 2 (2.25%) User Experience
5 1 (1.12%) Derivative
5 1 (1.12%) Hedge funds
5 1 (1.12%) Kindle
Operating Systems
1 6 (6.74%) Windows
2 4 (4.49%) Android
2 4 (4.49%) Apple iOS
Processes & Methodologies
1 68 (76.40%) Agile Software Development
2 48 (53.93%) TDD
3 29 (32.58%) Multithreading
4 27 (30.34%) OOD
5 25 (28.09%) Algorithmic Trading
5 25 (28.09%) Computer Science
5 25 (28.09%) E-Commerce
5 25 (28.09%) Functional Programming
5 25 (28.09%) OOA/OOD
5 25 (28.09%) Problem-Solving
5 25 (28.09%) Proprietary Trading
6 10 (11.24%) Event-Driven Architecture
6 10 (11.24%) Fintech
6 10 (11.24%) Kanban
6 10 (11.24%) MVVM
7 7 (7.87%) Test Automation
8 6 (6.74%) Concurrent Programming
8 6 (6.74%) Continuous Integration
8 6 (6.74%) CRM
8 6 (6.74%) Issue Tracking
Programming Languages
1 77 (86.52%) C#
2 50 (56.18%) F#
3 36 (40.45%) TypeScript
4 33 (37.08%) SQL
5 18 (20.22%) JavaScript
6 6 (6.74%) Java
7 5 (5.62%) XAML
8 4 (4.49%) Apple Swift
8 4 (4.49%) Objective-C
9 1 (1.12%) Scala
Qualifications
1 2 (2.25%) Degree
2 1 (1.12%) Computer Science Degree
2 1 (1.12%) MCITP
2 1 (1.12%) Microsoft Certification
Systems Management
1 25 (28.09%) Grafana
1 25 (28.09%) Kibana
Vendors
1 7 (7.87%) Google
2 5 (5.62%) Microsoft
3 1 (1.12%) Atlassian
3 1 (1.12%) Xamarin