Period
to 3 April 2020

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 3 April 2020 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
3 Apr 2020
Same period 2019 Same period 2018
Rank 636 781 787
Rank change year-on-year +145 +6 -10
Contract jobs citing Reactive Extensions 62 92 115
As % of all contract jobs advertised in the UK 0.10% 0.095% 0.11%
As % of the Libraries, Frameworks & Software Standards category 0.34% 0.29% 0.35%
Number of daily rates quoted 50 88 100
Median daily rate £700 £650 £650
Median daily rate % change year-on-year +7.69% - +18.18%
10th Percentile £546 £513 £475
90th Percentile £806 £720 £688
UK excluding London median daily rate £650 - £390
Number of hourly rates quoted 2 2 0
Median hourly rate £48.85 £63.65 -
Median hourly rate % change year-on-year -23.25% - -
UK excluding London median hourly rate - £63.65 -

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 18,469 31,673 32,816
As % of all contract IT jobs advertised in the UK 29.99% 32.87% 32.28%
Number of daily rates quoted 12,521 22,350 23,177
Median daily rate £500 £488 £475
Median daily rate % change year-on-year +2.56% +2.63% +9.83%
10th Percentile £331 £325 £313
90th Percentile £656 £638 £625
UK excluding London median daily rate £450 £438 £413
% change year-on-year +2.86% +6.06% +3.13%
Number of hourly rates quoted 249 303 328
Median hourly rate £35.00 £41.50 £41.21
Median hourly rate % change year-on-year -15.66% +0.72% +1.74%
10th Percentile £20.50 £18.50 £18.03
90th Percentile £68.75 £60.00 £59.13
Median hourly rate £35.00 £42.50 £41.81
% change year-on-year -17.65% +1.66% +4.51%

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
Contractor Daily Rate Trend

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

Daily rate trend for Reactive Extensions in the UK

Reactive Extensions
Daily Rate Histogram

Daily rate distribution for jobs citing Reactive Extensions over the 6 months to 3 April 2020.

Daily rate histogram for Reactive Extensions in the UK

Reactive Extensions
Contractor Hourly Rate Trend

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

Hourly rate trend 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 3 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
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
England +145 62 £700 +7.69% 8
London +120 61 £700 +7.69% 8
UK excluding London +130 1 £650 -
South East - 1 £650 -

For the 6 months to 3 April 2020, IT contractor 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 contract job ads with a requirement for Reactive Extensions.

1 51 (82.26%) C#
2 46 (74.19%) Agile Software Development
3 43 (69.35%) .NET
4 42 (67.74%) SQL
5 40 (64.52%) Front Office
6 34 (54.84%) TDD
7 32 (51.61%) Java
8 26 (41.94%) Continuous Integration
9 24 (38.71%) WPF
10 23 (37.10%) MVVM
11 22 (35.48%) Electronic Trading
12 21 (33.87%) HTML5
12 21 (33.87%) AngularJS
12 21 (33.87%) Oracle
12 21 (33.87%) HTML
12 21 (33.87%) Scrum
12 21 (33.87%) React
13 20 (32.26%) Microsoft
13 20 (32.26%) SQL Server
13 20 (32.26%) Continuous Improvement
14 19 (30.65%) JavaScript
14 19 (30.65%) NUnit
14 19 (30.65%) SDLC
15 18 (29.03%) User Experience
15 18 (29.03%) Technical Analysis
15 18 (29.03%) Relational Database
15 18 (29.03%) Banking
15 18 (29.03%) Fixed Income
15 18 (29.03%) Git (software)
16 17 (27.42%) TeamCity

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 14 (22.58%) Oracle SOA Suite
2 8 (12.90%) Apache Spark
3 3 (4.84%) IIS
4 2 (3.23%) Oracle Coherence
5 1 (1.61%) SharePoint
Business Applications
1 1 (1.61%) Dynamics CRM
Cloud Services
1 2 (3.23%) OpenShift
2 1 (1.61%) Azure
2 1 (1.61%) Dynamics 365
Communications & Networking
1 16 (25.81%) RTMP
2 5 (8.06%) AMQP
Database & Business Intelligence
1 20 (32.26%) SQL Server
2 18 (29.03%) Relational Database
3 13 (20.97%) NoSQL
4 11 (17.74%) Redis
5 8 (12.90%) Big Data
5 8 (12.90%) MongoDB
6 5 (8.06%) PostgreSQL
7 2 (3.23%) Hazelcast
8 1 (1.61%) SQL Server Reporting Services
Development Applications
1 19 (30.65%) NUnit
2 18 (29.03%) Git (software)
3 17 (27.42%) TeamCity
4 15 (24.19%) Moq
4 15 (24.19%) Subversion
5 11 (17.74%) Gradle
5 11 (17.74%) JUnit
6 8 (12.90%) Maven
6 8 (12.90%) Mockito
7 5 (8.06%) JIRA
7 5 (8.06%) SpecFlow
8 3 (4.84%) Android Studio
8 3 (4.84%) Calabash
8 3 (4.84%) Jenkins
9 1 (1.61%) Team Foundation Server
9 1 (1.61%) Visual Studio
General
1 40 (64.52%) Front Office
2 18 (29.03%) Banking
3 17 (27.42%) Finance
4 16 (25.81%) Investment Banking
5 2 (3.23%) Automotive
6 1 (1.61%) Law
Job Titles
1 56 (90.32%) Developer
2 42 (67.74%) C# Developer
3 21 (33.87%) C# Developer - Electronic Trading
3 21 (33.87%) Electronic Trading Developer
3 21 (33.87%) Front Office Developer
4 19 (30.65%) UI Developer
5 15 (24.19%) C# WPF Developer
5 15 (24.19%) WPF Developer
6 8 (12.90%) .NET Developer
6 8 (12.90%) Java Developer
7 7 (11.29%) C# .NET Developer
8 6 (9.68%) C# Developer - Investment Banking
8 6 (9.68%) Full Stack Developer
8 6 (9.68%) React Developer
9 5 (8.06%) Electronic Trading Java Developer
9 5 (8.06%) Front End Developer (Client-Side Developer)
10 4 (6.45%) Architect
10 4 (6.45%) F# Developer
10 4 (6.45%) JavaScript Developer
10 4 (6.45%) Solutions Architect
Libraries, Frameworks & Software Standards
1 43 (69.35%) .NET
2 24 (38.71%) WPF
3 21 (33.87%) AngularJS
3 21 (33.87%) HTML
3 21 (33.87%) HTML5
3 21 (33.87%) React
4 12 (19.35%) CSS
5 11 (17.74%) RESTful
6 10 (16.13%) REST
6 10 (16.13%) RxJava
7 8 (12.90%) ASP.NET Web API
7 8 (12.90%) Drools
7 8 (12.90%) Esper
7 8 (12.90%) NancyFx
7 8 (12.90%) Spring
7 8 (12.90%) Spring Boot
8 7 (11.29%) .NET Framework
8 7 (11.29%) Kafka
8 7 (11.29%) RabbitMQ
9 6 (9.68%) WCF
Miscellaneous
1 18 (29.03%) Fixed Income
1 18 (29.03%) User Experience
2 17 (27.42%) Foreign Exchange (FX)
3 10 (16.13%) Derivative
4 8 (12.90%) Analytical Skills
5 3 (4.84%) Credit Derivative
6 1 (1.61%) Interest Rate Derivative
Operating Systems
1 5 (8.06%) Android
2 4 (6.45%) Windows
3 3 (4.84%) Windows Server
4 1 (1.61%) Apple iOS
Processes & Methodologies
1 46 (74.19%) Agile Software Development
2 34 (54.84%) TDD
3 26 (41.94%) Continuous Integration
4 23 (37.10%) MVVM
5 22 (35.48%) Electronic Trading
6 21 (33.87%) Scrum
7 20 (32.26%) Continuous Improvement
8 19 (30.65%) SDLC
9 18 (29.03%) Technical Analysis
10 15 (24.19%) SOA
10 15 (24.19%) Unit Testing
11 14 (22.58%) Pair Programming
12 11 (17.74%) Economics
12 11 (17.74%) Multithreading
13 10 (16.13%) Test Automation
14 8 (12.90%) Complex Event Processing
15 6 (9.68%) Front End Development
15 6 (9.68%) Problem-Solving
16 5 (8.06%) CQRS
16 5 (8.06%) Proprietary Trading
Programming Languages
1 51 (82.26%) C#
2 42 (67.74%) SQL
3 32 (51.61%) Java
4 19 (30.65%) JavaScript
5 12 (19.35%) TypeScript
6 7 (11.29%) C++
6 7 (11.29%) XAML
7 5 (8.06%) Kotlin
7 5 (8.06%) Python
8 4 (6.45%) F#
9 3 (4.84%) Java 8
Qualifications
1 5 (8.06%) Degree
2 4 (6.45%) Master's Degree
3 1 (1.61%) Computer Science Degree
3 1 (1.61%) MCITP
3 1 (1.61%) Microsoft Certification
System Software
1 2 (3.23%) Docker
Systems Management
1 2 (3.23%) Kubernetes
Vendors
1 21 (33.87%) Oracle
2 20 (32.26%) Microsoft
3 14 (22.58%) DevExpress
3 14 (22.58%) RedGate
4 3 (4.84%) CA
4 3 (4.84%) CA Agile Central
5 2 (3.23%) Infragistics
5 2 (3.23%) Solace
5 2 (3.23%) Telerik
5 2 (3.23%) TIBCO
6 1 (1.61%) CheckPoint