Job Vacancy Trend Salary Trend Salary Histogram Job Locations Skill Sets
Period
to 16 November 2019

The following table provides summary statistics for permanent job vacancies with a requirement for RxJS skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited RxJS over the 6 months to 16 November 2019 with a comparison to the same period in the previous 2 years.

Reactive Extensions for JavaScript (RxJS)
UK
6 months to
16 Nov 2019		 Same period 2018 Same period 2017
Rank 909 1096 1142
Rank change year-on-year +187 +46 +70
Permanent jobs citing RxJS 154 68 75
As % of all permanent IT jobs advertised in the UK 0.11% 0.042% 0.042%
As % of the Libraries, Frameworks & Software Standards category 0.30% 0.10% 0.10%
Number of salaries quoted 145 67 64
UK median annual salary £67,500 £55,000 £72,500
Median salary % change year-on-year +22.73% -24.14% +52.63%
10th Percentile £44,250 £33,000 £32,375
90th Percentile £85,000 £90,000 £120,000
UK excluding London median annual salary £52,500 £50,000 £37,500
% change year-on-year +5.00% +33.33% -21.05%

RxJS 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 51,672 64,903 72,259
As % of all permanent IT jobs advertised in the UK 37.99% 39.81% 40.09%
Number of salaries quoted 42,656 53,625 60,022
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 £29,750
90th Percentile £87,500 £83,750 £77,500
UK excluding London median annual salary £45,000 £45,000 £42,500
% change year-on-year - +5.88% +1.19%

RxJS
Job Vacancy Trend

Job postings citing RxJS as a percentage of all IT jobs advertised.

Job vacancy trend for RxJS in the UK

RxJS
Salary Trend

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

Salary trend for RxJS in the UK

RxJS
Salary Histogram

The salary distribution of IT jobs citing RxJS over the 6 months to 16 November 2019.

Salary histogram for RxJS in the UK

RxJS
Top 11 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing RxJS within the UK over the 6 months to 16 November 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 +191 145 £70,000 +21.74% 16
London +162 120 £70,000 - 7
UK excluding London +65 32 £52,500 +5.00% 11
East of England +71 11 £60,000 +15.38% 1
North of England - 7 £47,500 - 6
Wales +13 6 £50,000 +38.89% 2
Yorkshire - 5 - - 3
South West +8 4 £37,500 +4.17% 1
South East +18 3 £32,500 -35.00% 1
North West - 2 £47,500 - 3
Scotland +14 1 - -

For the 6 months to 16 November 2019, IT jobs citing RxJS 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 RxJS.

1 140 (90.91%) JavaScript
2 110 (71.43%) CSS
3 108 (70.13%) AngularJS
4 100 (64.94%) Front End Development
5 99 (64.29%) HTML
6 89 (57.79%) TypeScript
7 77 (50.00%) HTML5
8 75 (48.70%) User Experience
9 74 (48.05%) ES6
10 68 (44.16%) Agile Software Development
11 67 (43.51%) React
11 67 (43.51%) Sass
11 67 (43.51%) Redux
12 59 (38.31%) TDD
13 46 (29.87%) CSS3
14 40 (25.97%) Finance
15 38 (24.68%) Node.js
15 38 (24.68%) Fintech
16 36 (23.38%) NgRx
17 34 (22.08%) Angular 2
18 32 (20.78%) Jasmine
19 31 (20.13%) AWS
19 31 (20.13%) React Native
20 30 (19.48%) Analytics
20 30 (19.48%) Computer Science
21 29 (18.83%) Degree
21 29 (18.83%) Vue.js
21 29 (18.83%) Docker
22 28 (18.18%) REST
23 26 (16.88%) HTTP

RxJS
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 6 (3.90%) Confluence
2 3 (1.95%) Apache
2 3 (1.95%) CMS
2 3 (1.95%) IIS
2 3 (1.95%) JBoss
2 3 (1.95%) nginx
2 3 (1.95%) Tornado
3 2 (1.30%) WordPress
4 1 (0.65%) Elasticsearch
4 1 (0.65%) Oracle SOA Suite
Applications
1 1 (0.65%) Photoshop
Cloud Services
1 31 (20.13%) AWS
2 12 (7.79%) Google Analytics
3 10 (6.49%) SaaS
3 10 (6.49%) Serverless
4 9 (5.84%) npm
5 7 (4.55%) GCP
6 6 (3.90%) Apigee
6 6 (3.90%) Azure
6 6 (3.90%) Cloudflare
6 6 (3.90%) CloudFront
7 4 (2.60%) Yarn
8 3 (1.95%) GitHub
9 2 (1.30%) Cloud Computing
Communications & Networking
1 26 (16.88%) HTTP
2 3 (1.95%) Internet
2 3 (1.95%) Reverse Proxy
Database & Business Intelligence
1 9 (5.84%) SQL Server
2 8 (5.19%) Neo4j
3 7 (4.55%) MySQL
4 6 (3.90%) PostgreSQL
5 4 (2.60%) NoSQL
6 3 (1.95%) Amazon Redshift
6 3 (1.95%) Big Data
6 3 (1.95%) MongoDB
6 3 (1.95%) Relational Database
6 3 (1.95%) SQL Server Integration Services
7 2 (1.30%) Blockchain
7 2 (1.30%) RethinkDB
8 1 (0.65%) BigQuery
8 1 (0.65%) Redis
Development Applications
1 32 (20.78%) Jasmine
2 22 (14.29%) Git (software)
3 20 (12.99%) webpack
4 9 (5.84%) JIRA
5 8 (5.19%) Karma Test Runner
5 8 (5.19%) Protractor
6 6 (3.90%) Mocha
7 4 (2.60%) Selenium
8 3 (1.95%) Bitbucket
8 3 (1.95%) Jenkins
8 3 (1.95%) Subversion
9 2 (1.30%) git-flow
9 2 (1.30%) PostCSS
9 2 (1.30%) Sinon.JS
10 1 (0.65%) Babel
10 1 (0.65%) Grunt
10 1 (0.65%) TeamCity
General
1 40 (25.97%) Finance
2 8 (5.19%) Retail
3 6 (3.90%) Banking
4 2 (1.30%) Advertising
4 2 (1.30%) Front Office
4 2 (1.30%) Investment Banking
4 2 (1.30%) Publishing
5 1 (0.65%) Law
5 1 (0.65%) Multimedia
Job Titles
1 120 (77.92%) Developer
2 59 (38.31%) Front End Developer (Client-Side Developer)
3 50 (32.47%) Senior Developer
4 49 (31.82%) Angular Developer
5 31 (20.13%) React Developer
6 30 (19.48%) Senior Front-End Developer
7 19 (12.34%) JavaScript Developer
8 14 (9.09%) Senior React Developer
9 12 (7.79%) Web Developer
10 10 (6.49%) Full Stack Developer
10 10 (6.49%) Lead Developer
11 9 (5.84%) JavaScript Engineer
12 8 (5.19%) Principal Developer
13 6 (3.90%) Software Engineer
14 4 (2.60%) HTML Developer
14 4 (2.60%) Node.js Developer
15 3 (1.95%) .NET Development Manager
15 3 (1.95%) Senior UX Developer
15 3 (1.95%) Software Manager
15 3 (1.95%) UX Developer
Libraries, Frameworks & Software Standards
1 110 (71.43%) CSS
2 108 (70.13%) AngularJS
3 99 (64.29%) HTML
4 77 (50.00%) HTML5
5 67 (43.51%) React
5 67 (43.51%) Redux
5 67 (43.51%) Sass
6 46 (29.87%) CSS3
7 38 (24.68%) Node.js
8 36 (23.38%) NgRx
9 34 (22.08%) Angular 2
10 31 (20.13%) React Native
11 29 (18.83%) Vue.js
12 28 (18.18%) REST
13 13 (8.44%) D3.js
13 13 (8.44%) RESTful
14 10 (6.49%) .NET
14 10 (6.49%) jQuery
14 10 (6.49%) JSON
15 8 (5.19%) WebSockets
Miscellaneous
1 75 (48.70%) User Experience
2 21 (13.64%) Algorithms
2 21 (13.64%) Data Structures
3 19 (12.34%) Enterprise Software
3 19 (12.34%) Mobile App
4 18 (11.69%) Greenfield Project
5 5 (3.25%) Analytical Skills
5 5 (3.25%) Graphic Design
6 4 (2.60%) Augmented Reality
7 3 (1.95%) Digital Media
7 3 (1.95%) Management Information System
7 3 (1.95%) Virtual Team
8 2 (1.30%) BBC
8 2 (1.30%) Fixed Income
8 2 (1.30%) Grid Computing
8 2 (1.30%) Hedge funds
9 1 (0.65%) Derivative
9 1 (0.65%) Renewable Energy
Operating Systems
1 9 (5.84%) Linux
2 3 (1.95%) Windows
3 1 (0.65%) Android
3 1 (0.65%) Apple iOS
Processes & Methodologies
1 100 (64.94%) Front End Development
2 68 (44.16%) Agile Software Development
3 59 (38.31%) TDD
4 38 (24.68%) Fintech
5 30 (19.48%) Analytics
5 30 (19.48%) Computer Science
6 25 (16.23%) DevOps
7 24 (15.58%) Continuous Improvement
8 23 (14.94%) Web Development
9 16 (10.39%) Continuous Integration
9 16 (10.39%) DesignOps
9 16 (10.39%) Prototyping
9 16 (10.39%) Software Engineering
10 13 (8.44%) Scrum
11 11 (7.14%) Functional Programming
11 11 (7.14%) Mobile Development
12 10 (6.49%) Microservices
13 9 (5.84%) Cross-Browser Compatibility
14 8 (5.19%) Artificial Intelligence
14 8 (5.19%) Continuous Delivery
Programming Languages
1 140 (90.91%) JavaScript
2 89 (57.79%) TypeScript
3 74 (48.05%) ES6
4 18 (11.69%) ES7
5 15 (9.74%) Java
6 13 (8.44%) Python
7 6 (3.90%) C#
7 6 (3.90%) Go
8 5 (3.25%) PHP
9 4 (2.60%) Shell Script
10 3 (1.95%) C
10 3 (1.95%) JSX
10 3 (1.95%) R
10 3 (1.95%) T-SQL
11 2 (1.30%) Ruby
12 1 (0.65%) Bash Shell
12 1 (0.65%) PowerShell
12 1 (0.65%) Rust
Qualifications
1 29 (18.83%) Degree
2 3 (1.95%) Computer Science Degree
2 3 (1.95%) PhD
3 1 (0.65%) DBS Check
Quality Assurance & Compliance
1 16 (10.39%) QA
System Software
1 29 (18.83%) Docker
Systems Management
1 10 (6.49%) Matomo
2 2 (1.30%) Opscode Chef
2 2 (1.30%) Puppet
3 1 (0.65%) Kubernetes
Vendors
1 18 (11.69%) Google
2 10 (6.49%) Hotjar
3 2 (1.30%) Atlassian
3 2 (1.30%) Facebook
4 1 (0.65%) Apple
4 1 (0.65%) IONA
4 1 (0.65%) Oracle