Chai Assertion Library (Chai.js)
UK

The following table provides summary statistics for permanent job vacancies 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 1 May 2024 with a comparison to the same period in the previous 2 years.

6 months to
1 May 2024
Same period 2023 Same period 2022
Rank 897 933 989
Rank change year-on-year +36 +56 -144
Permanent jobs citing Chai 6 50 222
As % of all permanent jobs advertised in the UK 0.006% 0.048% 0.14%
As % of the Libraries, Frameworks & Software Standards category 0.028% 0.16% 0.35%
Number of salaries quoted 5 21 61
10th Percentile - £46,250 -
25th Percentile - - £42,500
Median annual salary (50th Percentile) £42,500 £65,000 £55,000
Median % change year-on-year -34.62% +18.18% -15.38%
75th Percentile - - £75,000
90th Percentile £47,000 £75,000 £80,000
UK excluding London median annual salary £42,500 £45,750 £50,000
% change year-on-year -7.10% -8.50% +5.26%

All Software Libraries and Frameworks
UK

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 with a requirement for technical specification, industry standards, software libraries and framework skills.

Permanent vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 21,082 31,369 63,044
As % of all permanent jobs advertised in the UK 21.40% 30.15% 40.44%
Number of salaries quoted 15,760 19,312 30,351
10th Percentile £36,250 £41,117 £37,500
25th Percentile £45,000 £50,000 £47,500
Median annual salary (50th Percentile) £60,000 £67,500 £62,500
Median % change year-on-year -11.11% +8.00% +13.64%
75th Percentile £80,000 £87,500 £82,500
90th Percentile £100,000 £106,250 £100,000
UK excluding London median annual salary £55,000 £57,500 £55,000
% change year-on-year -4.35% +4.55% +10.00%

Chai
Job Vacancy Trend

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

Job vacancy trend for Chai in the UK

Chai
Salary Trend

3-month moving average salary quoted in jobs citing Chai.

Salary trend for Chai in the UK

Chai
Top 5 Job Locations

The table below looks at the demand and provides a guide to the median salaries quoted in IT jobs citing Chai within the UK over the 6 months to 1 May 2024. 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
Jobs
England +50 6 £42,500 -34.62% 2
UK excluding London +3 4 £42,500 -7.10% 1
South West -15 4 £42,500 -19.05% 1
London +82 2 £50,000 -23.08% 1
Work from Home +66 1 £50,000 -23.08% 1

Chai
Co-occurring Skills and Capabilities by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same employment type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Cloud Services
1 1 (16.67%) AWS
Database & Business Intelligence
1 4 (66.67%) SQL Server
2 1 (16.67%) PostgreSQL
2 1 (16.67%) Redis
Development Applications
1 5 (83.33%) Mocha
2 4 (66.67%) Jasmine
3 2 (33.33%) Cucumber
3 2 (33.33%) Maven
4 1 (16.67%) Git
4 1 (16.67%) Gradle
4 1 (16.67%) Jenkins
4 1 (16.67%) JIRA
4 1 (16.67%) JUnit
4 1 (16.67%) Sinon.JS
General
1 4 (66.67%) Organisational Skills
1 4 (66.67%) Social Skills
2 1 (16.67%) Finance
2 1 (16.67%) Influencing Skills
2 1 (16.67%) Presentation Skills
Job Titles
1 4 (66.67%) Software Engineer
2 1 (16.67%) Developer
2 1 (16.67%) Full Stack Developer
2 1 (16.67%) QA Engineer
Libraries, Frameworks & Software Standards
1 5 (83.33%) REST
2 4 (66.67%) .NET
2 4 (66.67%) .NET Core
2 4 (66.67%) Jest
2 4 (66.67%) Vue
3 1 (16.67%) CSS
3 1 (16.67%) Dropwizard
3 1 (16.67%) Express.js
3 1 (16.67%) HTML
3 1 (16.67%) Keycloak
3 1 (16.67%) Node.js
3 1 (16.67%) Nunjucks
3 1 (16.67%) SOAP
3 1 (16.67%) Spring
3 1 (16.67%) Spring Boot
Processes & Methodologies
1 5 (83.33%) Microservices
1 5 (83.33%) TDD
2 4 (66.67%) API Management
2 4 (66.67%) Software Engineering
2 4 (66.67%) Time Management
2 4 (66.67%) Unit Testing
3 1 (16.67%) Agile
3 1 (16.67%) API Testing
3 1 (16.67%) BDD
3 1 (16.67%) CI/CD
3 1 (16.67%) Design Patterns
3 1 (16.67%) Full Stack Development
3 1 (16.67%) Manual Testing
3 1 (16.67%) Open Source
3 1 (16.67%) Root Cause Analysis
3 1 (16.67%) Scrum
3 1 (16.67%) SDLC
3 1 (16.67%) SOLID
3 1 (16.67%) Test Automation
Programming Languages
1 5 (83.33%) TypeScript
2 4 (66.67%) SQL
3 2 (33.33%) Java
3 2 (33.33%) JavaScript
Qualifications
1 1 (16.67%) DV Cleared
1 1 (16.67%) SC Cleared
1 1 (16.67%) Security Cleared
Quality Assurance & Compliance
1 1 (16.67%) QA
Systems Management
1 1 (16.67%) Grafana
1 1 (16.67%) Kibana