Period
to 6 July 2020

The following table provides summary statistics for contract job vacancies with a requirement for RxJava skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited RxJava over the 6 months to 6 July 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.

RxJava
UK
6 months to
6 Jul 2020
Same period 2019 Same period 2018
Rank 490 763 718
Rank change year-on-year +273 -45 +19
Contract jobs citing RxJava 89 88 189
As % of all contract jobs advertised in the UK 0.21% 0.094% 0.18%
As % of the Libraries, Frameworks & Software Standards category 0.70% 0.29% 0.54%
Number of daily rates quoted 65 64 157
Median daily rate £525 £525 £500
Median daily rate % change year-on-year - +5.00% +5.26%
10th Percentile £420 £382 £370
90th Percentile £638 £669 £618
UK excluding London median daily rate £500 £381 £350
% change year-on-year +31.15% +8.93% -33.33%
Number of hourly rates quoted 0 1 0
Median hourly rate - £62.30 -
UK excluding London median hourly rate - £62.30 -

RxJava 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 12,758 30,276 35,199
As % of all contract IT jobs advertised in the UK 30.76% 32.32% 33.68%
Number of daily rates quoted 8,568 21,200 24,717
Median daily rate £500 £490 £470
Median daily rate % change year-on-year +2.04% +4.26% +4.44%
10th Percentile £334 £334 £315
90th Percentile £675 £650 £625
UK excluding London median daily rate £450 £440 £415
% change year-on-year +2.27% +6.02% +3.75%
Number of hourly rates quoted 196 321 366
Median hourly rate £35.00 £42.50 £41.88
Median hourly rate % change year-on-year -17.65% +1.47% +2.15%
10th Percentile £22.50 £18.50 £14.90
90th Percentile £63.00 £60.00 £60.47
Median hourly rate £35.00 £42.50 £40.00
% change year-on-year -17.65% +6.25% -2.44%

RxJava
Job Vacancy Trend

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

Job vacancy trend for RxJava in the UK

RxJava
Contractor Daily Rate Trend

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

Daily rate trend for RxJava in the UK

RxJava
Daily Rate Histogram

Daily rate distribution for jobs citing RxJava over the 6 months to 6 July 2020.

Daily rate histogram for RxJava in the UK

RxJava
Contractor Hourly Rate Trend

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

Hourly rate trend for RxJava in the UK

RxJava
Top 8 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing RxJava within the UK over the 6 months to 6 July 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 +271 88 £525 - 12
London +219 85 £525 - 7
UK excluding London +213 3 £500 +31.15% 5
Work from Home +6 3 £500 +42.86% 3
North of England +100 2 £500 - 2
East of England +69 1 - -
North West +67 1 - - 1
Yorkshire - 1 £500 - 1

For the 6 months to 6 July 2020, IT contractor jobs citing RxJava 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 RxJava.

1 75 (84.27%) Kotlin
2 64 (71.91%) Android
3 60 (67.42%) Agile Software Development
3 60 (67.42%) Android Development
4 53 (59.55%) Java
5 38 (42.70%) JUnit
6 33 (37.08%) Git (software)
7 32 (35.96%) Dagger
8 30 (33.71%) GitHub
9 28 (31.46%) Retrofit
10 27 (30.34%) Mockito
11 26 (29.21%) Finance
12 25 (28.09%) Mobile App
13 23 (25.84%) Architectural Design
14 20 (22.47%) DevOps
14 20 (22.47%) RESTful
14 20 (22.47%) Banking
15 19 (21.35%) Spring
15 19 (21.35%) MVVM
15 19 (21.35%) Jenkins
16 18 (20.22%) REST
16 18 (20.22%) JIRA
17 17 (19.10%) AWS
17 17 (19.10%) Continuous Integration
17 17 (19.10%) Android SDK
17 17 (19.10%) User Experience
17 17 (19.10%) SDLC
18 16 (17.98%) Android Studio
18 16 (17.98%) Material Design
19 15 (16.85%) JavaScript

RxJava
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 9 (10.11%) Confluence
2 7 (7.87%) Cloud Foundry
3 4 (4.49%) WebLogic
3 4 (4.49%) WebSphere
4 3 (3.37%) Oracle SOA Suite
5 2 (2.25%) Anypoint
6 1 (1.12%) CMS
Applications
1 1 (1.12%) Zeplin
Cloud Services
1 30 (33.71%) GitHub
2 17 (19.10%) AWS
3 2 (2.25%) Firebase
4 1 (1.12%) Amazon EC2
4 1 (1.12%) Amazon ELB
4 1 (1.12%) Amazon S3
4 1 (1.12%) AWS Lambda
4 1 (1.12%) Azure
4 1 (1.12%) SaaS
4 1 (1.12%) Serverless
Communications & Networking
1 10 (11.24%) HTTPS
2 5 (5.62%) HTTP
Database & Business Intelligence
1 3 (3.37%) SQL Server
2 1 (1.12%) Amazon RDS
2 1 (1.12%) Couchbase
2 1 (1.12%) NoSQL
2 1 (1.12%) PostgreSQL
2 1 (1.12%) SQLite
Development Applications
1 38 (42.70%) JUnit
2 33 (37.08%) Git (software)
3 27 (30.34%) Mockito
4 19 (21.35%) Jenkins
5 18 (20.22%) JIRA
6 16 (17.98%) Android Studio
7 12 (13.48%) git-flow
7 12 (13.48%) Maven
8 9 (10.11%) Gradle
9 8 (8.99%) Cucumber
10 4 (4.49%) Ant
10 4 (4.49%) JMeter
11 3 (3.37%) Moq
11 3 (3.37%) Subversion
11 3 (3.37%) TeamCity
12 2 (2.25%) CircleCI
12 2 (2.25%) CocoaPods
12 2 (2.25%) fastlane
12 2 (2.25%) Travis CI
12 2 (2.25%) Xcode
General
1 26 (29.21%) Finance
2 20 (22.47%) Banking
3 10 (11.24%) Retail
4 3 (3.37%) Automotive
4 3 (3.37%) Front Office
5 1 (1.12%) Games
Job Titles
1 68 (76.40%) Developer
2 52 (58.43%) Android Developer
3 11 (12.36%) Android Engineer
3 11 (12.36%) Senior Developer
4 10 (11.24%) Java Developer
4 10 (11.24%) Senior Android Developer
5 7 (7.87%) Mobile Developer
6 6 (6.74%) Applications Developer
6 6 (6.74%) DevOps Engineer
6 6 (6.74%) Java Engineer
7 5 (5.62%) Lead Developer
8 4 (4.49%) UI Developer
9 3 (3.37%) C# Developer
9 3 (3.37%) C# Developer - Electronic Trading
9 3 (3.37%) C# WPF Developer
9 3 (3.37%) Electronic Trading Developer
9 3 (3.37%) Electronic Trading Java Developer
9 3 (3.37%) Front Office Developer
9 3 (3.37%) Lead Android Developer
9 3 (3.37%) WPF Developer
Libraries, Frameworks & Software Standards
1 32 (35.96%) Dagger
2 28 (31.46%) Retrofit
3 20 (22.47%) RESTful
4 19 (21.35%) Spring
5 18 (20.22%) REST
6 17 (19.10%) Android SDK
7 16 (17.98%) Material Design
8 14 (15.73%) CSS
8 14 (15.73%) HTML
9 13 (14.61%) HTML5
10 9 (10.11%) JSON
10 9 (10.11%) Reactive Extensions
10 9 (10.11%) Vert.x
10 9 (10.11%) Web Services
11 7 (7.87%) Spring Boot
11 7 (7.87%) XML
12 6 (6.74%) Hystrix
12 6 (6.74%) SOAP
13 4 (4.49%) J2EE
13 4 (4.49%) Kafka
Miscellaneous
1 25 (28.09%) Mobile App
2 17 (19.10%) User Experience
3 12 (13.48%) Mobile Payment
4 4 (4.49%) Data Structures
4 4 (4.49%) Enterprise Software
5 3 (3.37%) Fixed Income
5 3 (3.37%) Greenfield Project
6 2 (2.25%) Management Information System
7 1 (1.12%) Analytical Skills
7 1 (1.12%) Augmented Reality
7 1 (1.12%) iPad
7 1 (1.12%) iPhone
7 1 (1.12%) Mobile Games
Operating Systems
1 64 (71.91%) Android
2 4 (4.49%) Apple iOS
3 2 (2.25%) Linux
Processes & Methodologies
1 60 (67.42%) Agile Software Development
1 60 (67.42%) Android Development
2 23 (25.84%) Architectural Design
3 20 (22.47%) DevOps
4 19 (21.35%) MVVM
5 17 (19.10%) Continuous Integration
5 17 (19.10%) SDLC
6 14 (15.73%) Scrum
7 13 (14.61%) Mobile Development
7 13 (14.61%) Pair Programming
8 12 (13.48%) Open Source
8 12 (13.48%) Thought Leadership
8 12 (13.48%) Waterfall
9 10 (11.24%) Continuous Improvement
9 10 (11.24%) Data Protection
9 10 (11.24%) Microservices
10 9 (10.11%) Agile Project Management
10 9 (10.11%) Computer Science
10 9 (10.11%) Project Management
10 9 (10.11%) TDD
Programming Languages
1 75 (84.27%) Kotlin
2 53 (59.55%) Java
3 15 (16.85%) JavaScript
4 7 (7.87%) Java 8
4 7 (7.87%) Python
5 6 (6.74%) C
6 4 (4.49%) SQL
7 3 (3.37%) C#
8 2 (2.25%) Apple Swift
9 1 (1.12%) Clojure
9 1 (1.12%) Groovy
9 1 (1.12%) Shell Script
Qualifications
1 8 (8.99%) Degree
2 7 (7.87%) Computer Science Degree
3 1 (1.12%) Master's Degree
Quality Assurance & Compliance
1 1 (1.12%) QA
System Software
1 1 (1.12%) Docker
Systems Management
1 9 (10.11%) Terraform
2 7 (7.87%) Kubernetes
3 6 (6.74%) Prometheus
Vendors
1 7 (7.87%) MuleSoft
2 6 (6.74%) AppDynamics
2 6 (6.74%) Splunk
3 4 (4.49%) CA
3 4 (4.49%) CA Agile Central
4 3 (3.37%) DevExpress
4 3 (3.37%) Microsoft
4 3 (3.37%) Oracle
4 3 (3.37%) RedGate
5 1 (1.12%) Kony