Period
to 16 October 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 16 October 2018 with a comparison to the same period in the previous 2 years.

Chai Assertion Library (Chai.js)
UK > England
6 months to
16 Oct 2018
Same period 2017 Same period 2016
Rank 835 1001 1127
Rank change year-on-year +166 +126 +130
Permanent jobs citing Chai 283 165 74
As % of all permanent IT jobs advertised in England 0.18% 0.10% 0.041%
As % of the Libraries, Frameworks & Software Standards category 0.46% 0.25% 0.11%
Number of salaries quoted 157 122 66
England median annual salary £75,000 £60,000 £60,000
Median salary % change year-on-year +25.00% - +14.29%
10th Percentile £45,850 £36,250 £39,375
90th Percentile £92,500 £85,000 £100,000
UK median annual salary £75,000 £60,000 £60,000
% change year-on-year +25.00% - +14.29%

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 61,613 66,394 70,295
As % of all permanent IT jobs advertised in England 40.15% 40.35% 39.12%
Number of salaries quoted 51,349 55,344 61,483
England median annual salary £52,500 £50,000 £47,500
Median salary % change year-on-year +5.00% +5.26% +5.56%
10th Percentile £31,250 £29,750 £28,750
90th Percentile £83,750 £77,500 £76,250
UK median annual salary £50,869 £50,000 £47,500
% change year-on-year +1.74% +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 16 October 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 16 October 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 +149 243 £75,000 +15.38% 24
North of England +40 22 £48,500 +4.30% 6
North West +28 18 £48,500 -17.80% 5
South East +15 12 £60,000 +20.00% 2
Midlands +22 3 £28,500 -52.50% 2
Yorkshire - 3 £56,250 - 1
West Midlands - 3 £28,500 - 2
South West +9 2 £71,250 +90.00%
North East -8 1 - -
East of England - 1 £47,500 - 2
Chai
UK

For the 6 months to 16 October 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.

1 276 (97.53%) Mocha
2 218 (77.03%) CSS
3 216 (76.33%) JavaScript
4 208 (73.50%) Git (software)
5 189 (66.78%) HTML
6 183 (64.66%) TDD
6 183 (64.66%) AngularJS
7 182 (64.31%) Amazon AWS
7 182 (64.31%) Agile Software Development
8 160 (56.54%) HTML5
8 160 (56.54%) CSS3
9 157 (55.48%) Karma Test Runner
10 154 (54.42%) gulp
11 151 (53.36%) npm
12 150 (53.00%) NoSQL
13 148 (52.30%) Sass
14 147 (51.94%) BDD
15 144 (50.88%) Microsoft Azure
15 144 (50.88%) SQL
16 141 (49.82%) Selenium
17 135 (47.70%) LESS
18 134 (47.35%) DevOps
19 129 (45.58%) Node.js
20 126 (44.52%) Problem-Solving
21 121 (42.76%) Protractor
22 120 (42.40%) Jest
23 116 (40.99%) webpack
24 114 (40.28%) RESTful
25 110 (38.87%) Sinon.JS
25 110 (38.87%) Degree

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
1 100 (35.34%) CMS
2 94 (33.22%) EPiServer
3 44 (15.55%) Ethereum
3 44 (15.55%) Sitecore CMS
4 17 (6.01%) Confluence
5 15 (5.30%) Cloud Foundry
5 15 (5.30%) Mule
5 15 (5.30%) Tomcat
6 2 (0.71%) Elasticsearch
7 1 (0.35%) Liferay
7 1 (0.35%) nginx
Applications
1 1 (0.35%) Photoshop
Business Applications
1 44 (15.55%) Eloqua
2 5 (1.77%) Distributed Ledger
Cloud Services
1 182 (64.31%) Amazon AWS
2 151 (53.36%) npm
3 144 (50.88%) Microsoft Azure
4 77 (27.21%) GitHub
5 49 (17.31%) Amazon S3
6 48 (16.96%) Amazon EC2
7 44 (15.55%) Cloud Computing
8 28 (9.89%) Yarn
9 17 (6.01%) IaaS
9 17 (6.01%) PaaS
9 17 (6.01%) Slack
10 7 (2.47%) BrowserStack
11 6 (2.12%) AWS Lambda
11 6 (2.12%) Serverless
12 5 (1.77%) AWS Elastic Beanstalk
13 4 (1.41%) CloudFront
14 2 (0.71%) Amazon SQS
14 2 (0.71%) IBM Cloud
14 2 (0.71%) SaaS
15 1 (0.35%) G Suite
Communications & Networking
1 9 (3.18%) HTTP
2 1 (0.35%) AMQP
2 1 (0.35%) Internet
2 1 (0.35%) Intranet
Database & Business Intelligence
1 150 (53.00%) NoSQL
2 102 (36.04%) MongoDB
3 55 (19.43%) Redis
4 52 (18.37%) PostgreSQL
5 50 (17.67%) MySQL
6 48 (16.96%) SQL Server
7 46 (16.25%) Blockchain
7 46 (16.25%) CouchDB
8 44 (15.55%) Couchbase
9 24 (8.48%) Relational Database
10 2 (0.71%) Big Data
11 1 (0.35%) Amazon RDS
11 1 (0.35%) Hazelcast
Development Applications
1 276 (97.53%) Mocha
2 208 (73.50%) Git (software)
3 157 (55.48%) Karma Test Runner
4 154 (54.42%) gulp
5 141 (49.82%) Selenium
6 121 (42.76%) Protractor
7 116 (40.99%) webpack
8 110 (38.87%) Sinon.JS
9 101 (35.69%) TeamCity
10 90 (31.80%) Bower
10 90 (31.80%) Octopus Deploy
10 90 (31.80%) Team Foundation Server
10 90 (31.80%) Visual Studio
11 63 (22.26%) Jasmine
12 58 (20.49%) Grunt
13 47 (16.61%) Jenkins
14 36 (12.72%) Babel
15 22 (7.77%) JUnit
16 19 (6.71%) JIRA
17 18 (6.36%) Maven
General
1 101 (35.69%) Finance
2 86 (30.39%) Banking
3 48 (16.96%) Advertising
4 44 (15.55%) Marketing
5 43 (15.19%) Telecoms
6 39 (13.78%) Games
7 20 (7.07%) Retail
8 8 (2.83%) Law
9 7 (2.47%) Automotive
10 5 (1.77%) Investment Banking
11 1 (0.35%) Publishing
Job Titles
1 239 (84.45%) Developer
2 69 (24.38%) .NET Developer
3 67 (23.67%) Senior Developer
4 43 (15.19%) Full Stack Developer
5 40 (14.13%) Blockchain Developer
5 40 (14.13%) Front End Developer (Client-Side Developer)
6 39 (13.78%) ASP.NET Developer
7 38 (13.43%) C# Developer
8 37 (13.07%) JavaScript Developer
9 30 (10.60%) Angular Developer
9 30 (10.60%) React Developer
10 29 (10.25%) Node.js Developer
11 24 (8.48%) Lead Developer
11 24 (8.48%) Senior Front-End Developer
12 21 (7.42%) Backend Developer
13 20 (7.07%) Senior Backend Developer
14 18 (6.36%) Digital Developer
15 14 (4.95%) C# .NET Developer
15 14 (4.95%) C# ASP.NET Developer
16 11 (3.89%) JavaScript Engineer
Libraries, Frameworks & Software Standards
1 218 (77.03%) CSS
2 189 (66.78%) HTML
3 183 (64.66%) AngularJS
4 160 (56.54%) CSS3
4 160 (56.54%) HTML5
5 148 (52.30%) Sass
6 135 (47.70%) LESS
7 129 (45.58%) Node.js
8 120 (42.40%) Jest
9 114 (40.28%) RESTful
10 105 (37.10%) Gherkin
11 103 (36.40%) Backbone.js
11 103 (36.40%) React
12 102 (36.04%) Twitter Bootstrap
13 99 (34.98%) jQuery
14 98 (34.63%) .NET
15 94 (33.22%) Ember.js
15 94 (33.22%) MEAN Stack
16 76 (26.86%) Enzyme
17 65 (22.97%) ASP.NET
Miscellaneous
1 90 (31.80%) User Experience
2 44 (15.55%) Bitcoin
2 44 (15.55%) Cloud Native
3 19 (6.71%) Self-Motivation
4 17 (6.01%) Mobile App
5 12 (4.24%) Computer Science
5 12 (4.24%) Fintech
6 10 (3.53%) Linux Command Line
7 9 (3.18%) Algorithms
7 9 (3.18%) Data Structures
7 9 (3.18%) Online Gambling
8 5 (1.77%) Blog
8 5 (1.77%) Online Banking
9 4 (1.41%) Analytical Skills
9 4 (1.41%) Augmented Reality
10 3 (1.06%) Greenfield Project
11 2 (0.71%) Clustering
11 2 (0.71%) Enterprise Software
11 2 (0.71%) Robotics
12 1 (0.35%) Online Games
Operating Systems
1 58 (20.49%) Linux
2 44 (15.55%) VMS
3 2 (0.71%) Android
3 2 (0.71%) Apple iOS
4 1 (0.35%) Unix
Processes & Methodologies
1 183 (64.66%) TDD
2 182 (64.31%) Agile Software Development
3 147 (51.94%) BDD
4 134 (47.35%) DevOps
5 126 (44.52%) Problem-Solving
6 110 (38.87%) Software Engineering
7 106 (37.46%) Microservices
8 102 (36.04%) Responsive Web Design
9 97 (34.28%) Test Automation
10 94 (33.22%) Continuous Improvement
11 93 (32.86%) Progressive Web App
11 93 (32.86%) Refactoring
11 93 (32.86%) Web Application Development
12 91 (32.16%) Analytics
12 91 (32.16%) Front End Development
13 90 (31.80%) Performance Management
14 89 (31.45%) Data Science
15 68 (24.03%) MVC
16 54 (19.08%) Workflow
17 47 (16.61%) API Design
Programming Languages
1 216 (76.33%) JavaScript
2 144 (50.88%) SQL
3 104 (36.75%) ES6
4 57 (20.14%) Java
5 47 (16.61%) C#
6 44 (15.55%) Solidity
7 27 (9.54%) Python
8 24 (8.48%) Ruby
9 23 (8.13%) Haskell
10 20 (7.07%) Lua
11 19 (6.71%) Apple Swift
11 19 (6.71%) C++
11 19 (6.71%) Elixir
11 19 (6.71%) Go
11 19 (6.71%) Java 8
11 19 (6.71%) Objective-C
11 19 (6.71%) Rust
11 19 (6.71%) Scala
12 16 (5.65%) TypeScript
13 9 (3.18%) ES7
Qualifications
1 110 (38.87%) Degree
2 48 (16.96%) SAFe Agilist
3 1 (0.35%) Computer Science Degree
3 1 (0.35%) SC Cleared
3 1 (0.35%) Security Cleared
Quality Assurance & Compliance
1 13 (4.59%) QA
System Software
1 69 (24.38%) Docker
2 43 (15.19%) Virtual Machines
Systems Management
1 49 (17.31%) Kubernetes
2 44 (15.55%) Docker Swarm
3 2 (0.71%) Ansible
Vendors
1 44 (15.55%) Marketo
1 44 (15.55%) Sitecore
2 37 (13.07%) Alias
3 16 (5.65%) AppDynamics
3 16 (5.65%) Splunk
4 15 (5.30%) Cypress Semiconductor
5 2 (0.71%) Google
5 2 (0.71%) IBM
6 1 (0.35%) Facebook
6 1 (0.35%) hybris
6 1 (0.35%) Microsoft
6 1 (0.35%) Oracle
6 1 (0.35%) Zend