Period
to 21 July 2018

The following table provides summary statistics for permanent job vacancies advertised in England with a requirement for Chai skills. Included is a benchmarking guide to the salaries offered in vacancies that have cited Chai over the 6 months to 21 July 2018 with a comparison to the same period in the previous 2 years.

Chai Assertion Library (Chai.js)
UK > England
6 months to
21 Jul 2018
Same period 2017 Same period 2016
Rank 828 979 1167
Rank change year-on-year +151 +188 +95
Permanent jobs citing Chai 322 191 76
As % of all permanent IT jobs advertised in England 0.20% 0.11% 0.040%
As % of the Libraries, Frameworks & Software Standards category 0.48% 0.28% 0.10%
Number of salaries quoted 189 161 60
England median annual salary £70,000 £60,000 £60,000
Median salary % change year-on-year +16.67% +0.00% +9.09%
10th Percentile £41,250 £36,250 £39,250
90th Percentile £87,500 £100,000 £105,000
UK median annual salary £70,000 £60,000 £60,000
% change year-on-year +16.67% - +9.09%

Chai 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 advertised in England with a requirement for technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
England
Permanent vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 66,654 68,466 74,823
As % of all permanent IT jobs advertised in England 40.79% 40.74% 39.21%
Number of salaries quoted 55,875 57,792 65,487
England median annual salary £50,000 £47,500 £47,500
Median salary % change year-on-year +5.26% - +5.56%
10th Percentile £31,250 £29,000 £28,750
90th Percentile £81,250 £77,500 £75,000
UK median annual salary £50,000 £47,500 £47,500
% change year-on-year +5.26% - +5.56%

Chai
Job Vacancy Trend in England

Job postings citing Chai as a percentage of all IT jobs advertised in England.

Job vacancy trend for Chai in England

Chai
Salary Trend in England

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

Salary trend for Chai in England

Chai
Salary Histogram in England

The salary distribution of IT jobs citing Chai in England over the 6 months to 21 July 2018.

Salary histogram for Chai in England

Chai
Job Locations in England

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Chai within the England region over the 6 months to 21 July 2018. 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
London +145 272 £75,000 +11.11% 28
South East -12 22 £53,500 +18.89% 3
North of England +23 15 £47,500 +0.53% 2
North West +17 13 £46,750 -11.37% 2
South West +7 9 £47,500 +26.67% 2
West Midlands +23 2 £41,250 -8.33% 3
East of England +13 2 £56,250 +12.50%
Midlands -5 2 £41,250 -8.33% 3
Yorkshire +21 1 £47,500 +10.47%
North East - 1 - -
Chai
UK

For the 6 months to 21 July 2018, IT jobs citing Chai 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 across the England region with a requirement for Chai.

1 317 (98.45%) Mocha
2 248 (77.02%) CSS
3 241 (74.84%) Git (software)
4 222 (68.94%) HTML
5 216 (67.08%) Amazon AWS
6 202 (62.73%) JavaScript
6 202 (62.73%) Agile Software Development
7 189 (58.70%) Node.js
8 188 (58.39%) Jest
9 179 (55.59%) TDD
10 178 (55.28%) CSS3
11 176 (54.66%) HTML5
12 160 (49.69%) AngularJS
13 159 (49.38%) ES6
14 150 (46.58%) DevOps
15 149 (46.27%) BDD
16 145 (45.03%) NoSQL
16 145 (45.03%) Selenium
16 145 (45.03%) SQL
17 142 (44.10%) Test Automation
18 141 (43.79%) Microsoft Azure
19 129 (40.06%) gulp
20 125 (38.82%) Finance
21 124 (38.51%) Karma Test Runner
22 122 (37.89%) GitHub
22 122 (37.89%) User Experience
22 122 (37.89%) React
23 120 (37.27%) Sass
24 119 (36.96%) Banking
25 116 (36.02%) npm

Chai
Co-occurring IT Skills in England 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 84 (26.09%) CMS
2 71 (22.05%) EPiServer
3 61 (18.94%) Ethereum
4 44 (13.66%) Confluence
5 42 (13.04%) Cloud Foundry
5 42 (13.04%) Mule
5 42 (13.04%) Tomcat
6 41 (12.73%) Sitecore CMS
7 6 (1.86%) Drupal
7 6 (1.86%) WordPress
8 2 (0.62%) Elasticsearch
8 2 (0.62%) IIS
8 2 (0.62%) Mongoose
8 2 (0.62%) nginx
Applications
1 1 (0.31%) Photoshop
Business Applications
1 41 (12.73%) Eloqua
2 25 (7.76%) Distributed Ledger
Cloud Services
1 216 (67.08%) Amazon AWS
2 141 (43.79%) Microsoft Azure
3 122 (37.89%) GitHub
4 116 (36.02%) npm
5 66 (20.50%) Amazon EC2
5 66 (20.50%) Amazon S3
6 60 (18.63%) Cloud Computing
7 46 (14.29%) Slack
8 42 (13.04%) IaaS
8 42 (13.04%) PaaS
9 22 (6.83%) Yarn
10 7 (2.17%) BrowserStack
11 5 (1.55%) Amazon SQS
11 5 (1.55%) Twilio
12 4 (1.24%) AWS Lambda
12 4 (1.24%) Serverless
13 2 (0.62%) CloudFront
13 2 (0.62%) Google Cloud Platform
13 2 (0.62%) Heroku
13 2 (0.62%) Sauce Labs
Communications & Networking
1 19 (5.90%) HTTP
2 2 (0.62%) DNS
2 2 (0.62%) Internet
2 2 (0.62%) SSL
2 2 (0.62%) TCP/IP
3 1 (0.31%) SMS
Database & Business Intelligence
1 145 (45.03%) NoSQL
2 77 (23.91%) MongoDB
3 76 (23.60%) MySQL
3 76 (23.60%) PostgreSQL
4 72 (22.36%) Blockchain
5 71 (22.05%) Redis
6 45 (13.98%) SQL Server
7 41 (12.73%) Couchbase
8 26 (8.07%) CouchDB
9 14 (4.35%) Relational Database
Development Applications
1 317 (98.45%) Mocha
2 241 (74.84%) Git (software)
3 145 (45.03%) Selenium
4 129 (40.06%) gulp
5 124 (38.51%) Karma Test Runner
6 107 (33.23%) Protractor
7 99 (30.75%) webpack
8 88 (27.33%) Sinon.JS
9 77 (23.91%) Jasmine
10 75 (23.29%) TeamCity
11 74 (22.98%) Jenkins
12 67 (20.81%) Babel
12 67 (20.81%) Bower
12 67 (20.81%) Octopus Deploy
12 67 (20.81%) Team Foundation Server
12 67 (20.81%) Visual Studio
13 51 (15.84%) Grunt
14 50 (15.53%) JUnit
15 48 (14.91%) JIRA
16 44 (13.66%) Maven
General
1 125 (38.82%) Finance
2 119 (36.96%) Banking
3 64 (19.88%) Telecoms
4 43 (13.35%) Advertising
5 41 (12.73%) Marketing
6 37 (11.49%) Games
7 18 (5.59%) Retail
8 8 (2.48%) Law
9 5 (1.55%) Investment Banking
10 4 (1.24%) Automotive
11 3 (0.93%) Publishing
12 1 (0.31%) French Language
Job Titles
1 257 (79.81%) Developer
2 66 (20.50%) Senior Developer
3 58 (18.01%) .NET Developer
4 56 (17.39%) JavaScript Developer
5 53 (16.46%) Node.js Developer
6 45 (13.98%) Blockchain Developer
7 41 (12.73%) Backend Developer
8 40 (12.42%) Front End Developer (Client-Side Developer)
9 29 (9.01%) Full Stack Developer
10 27 (8.39%) Angular Developer
11 24 (7.45%) Lead Developer
12 21 (6.52%) C# Developer
13 20 (6.21%) ASP.NET Developer
13 20 (6.21%) Technical Leader
14 17 (5.28%) Java Developer
14 17 (5.28%) Senior Front-End Developer
15 16 (4.97%) Senior Java Developer
16 15 (4.66%) Senior Backend Developer
17 13 (4.04%) Digital Developer
18 12 (3.73%) JavaScript Engineer
Libraries, Frameworks & Software Standards
1 248 (77.02%) CSS
2 222 (68.94%) HTML
3 189 (58.70%) Node.js
4 188 (58.39%) Jest
5 178 (55.28%) CSS3
6 176 (54.66%) HTML5
7 160 (49.69%) AngularJS
8 122 (37.89%) React
9 120 (37.27%) Sass
10 113 (35.09%) Enzyme
11 101 (31.37%) LESS
12 89 (27.64%) Redux
13 88 (27.33%) RESTful
14 87 (27.02%) Gherkin
15 82 (25.47%) REST
16 80 (24.84%) jQuery
17 77 (23.91%) Backbone.js
18 76 (23.60%) Ember.js
19 74 (22.98%) .NET
20 73 (22.67%) Twitter Bootstrap
Miscellaneous
1 122 (37.89%) User Experience
2 61 (18.94%) Bitcoin
3 43 (13.35%) Mobile App
4 41 (12.73%) Cloud Native
5 20 (6.21%) Computer Science
5 20 (6.21%) Fintech
6 16 (4.97%) Linux Command Line
7 13 (4.04%) Algorithms
7 13 (4.04%) Data Structures
7 13 (4.04%) Online Gambling
7 13 (4.04%) Self-Motivation
8 7 (2.17%) Greenfield Project
9 6 (1.86%) Blog
10 5 (1.55%) Clustering
10 5 (1.55%) Online Banking
11 3 (0.93%) Analytical Skills
11 3 (0.93%) Animation
12 2 (0.62%) Augmented Reality
12 2 (0.62%) Derivative
13 1 (0.31%) Enterprise Software
Operating Systems
1 89 (27.64%) Linux
2 59 (18.32%) VMS
3 3 (0.93%) Android
3 3 (0.93%) Apple iOS
Processes & Methodologies
1 202 (62.73%) Agile Software Development
2 179 (55.59%) TDD
3 150 (46.58%) DevOps
4 149 (46.27%) BDD
5 142 (44.10%) Test Automation
6 109 (33.85%) Front End Development
7 104 (32.30%) Problem-Solving
8 91 (28.26%) Software Engineering
9 83 (25.78%) Responsive Web Design
10 82 (25.47%) Scrum
11 81 (25.16%) Microservices
12 74 (22.98%) MVC
13 73 (22.67%) Continuous Improvement
14 71 (22.05%) Kanban
14 71 (22.05%) Web Application Development
15 70 (21.74%) Progressive Web App
15 70 (21.74%) Refactoring
16 69 (21.43%) Analytics
17 67 (20.81%) Data Science
17 67 (20.81%) Performance Management
Programming Languages
1 202 (62.73%) JavaScript
2 159 (49.38%) ES6
3 145 (45.03%) SQL
4 86 (26.71%) Java
5 58 (18.01%) Solidity
6 44 (13.66%) Java 8
7 26 (8.07%) C#
8 24 (7.45%) Ruby
9 21 (6.52%) Haskell
10 20 (6.21%) Python
11 17 (5.28%) TypeScript
12 15 (4.66%) ES7
13 14 (4.35%) Lua
14 13 (4.04%) Apple Swift
14 13 (4.04%) C++
14 13 (4.04%) Elixir
14 13 (4.04%) Go
14 13 (4.04%) Objective-C
14 13 (4.04%) Rust
14 13 (4.04%) Scala
Qualifications
1 92 (28.57%) Degree
2 45 (13.98%) SAFe Agilist
3 5 (1.55%) Computer Science Degree
4 2 (0.62%) SC Cleared
4 2 (0.62%) Security Cleared
Quality Assurance & Compliance
1 14 (4.35%) QA
System Software
1 96 (29.81%) Docker
2 59 (18.32%) Virtual Machines
Systems Management
1 65 (20.19%) Kubernetes
2 63 (19.57%) Docker Swarm
3 1 (0.31%) Ansible
3 1 (0.31%) Opscode Chef
3 1 (0.31%) Packer
3 1 (0.31%) Puppet
3 1 (0.31%) Terraform
Vendors
1 43 (13.35%) AppDynamics
1 43 (13.35%) Splunk
2 41 (12.73%) Marketo
2 41 (12.73%) Sitecore
3 27 (8.39%) Alias
4 13 (4.04%) Cypress Semiconductor
5 2 (0.62%) Google
5 2 (0.62%) hybris
5 2 (0.62%) Rollbar
6 1 (0.31%) Microsoft
6 1 (0.31%) New Relic
6 1 (0.31%) Zend