Period
to 18 April 2021

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for ES6 skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited ES6 over the 6 months to 18 April 2021 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.

ECMAScript 2015 (JavaScript ES2015, ES6)
Central London > City of London
6 months to
18 Apr 2021
Same period 2020 Same period 2019
Rank 123 148 125
Rank change year-on-year +25 -23 +11
Contract jobs citing ES6 18 23 124
As % of all contract jobs advertised in the City of London 0.73% 0.59% 1.83%
As % of the Programming Languages category 1.53% 1.20% 3.59%
Number of daily rates quoted 12 19 99
10th Percentile £222 £470 £463
25th Percentile £311 £513 £500
Median daily rate (50th Percentile) £425 £525 £550
Median % change year-on-year -19.05% -4.55% -
75th Percentile £569 £589 £638
90th Percentile £639 £645 £675
Central London median daily rate £475 £525 £550
% change year-on-year -9.52% -4.55% -

ES6 is in the Programming Languages category. The following table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in the City of London with a requirement for coding skills.

All Programming Languages
City of London
Contract vacancies with a requirement for coding skills 1,178 1,918 3,456
As % of all contract IT jobs advertised in the City of London 47.89% 49.04% 51.11%
Number of daily rates quoted 892 1,524 2,805
10th Percentile £363 £381 £400
25th Percentile £450 £450 £463
Median daily rate (50th Percentile) £550 £525 £525
Median % change year-on-year +4.76% - -
75th Percentile £638 £625 £619
90th Percentile £713 £688 £675
Central London median daily rate £550 £525 £525
% change year-on-year +4.76% - +2.44%
Number of hourly rates quoted 3 12 17
10th Percentile £15.55 £24.50 £15.08
25th Percentile £17.86 £26.19 "
Median hourly rate £23.45 £48.00 £21.00
Median % change year-on-year -51.15% +128.57% -2.33%
75th Percentile £31.21 £53.88 £37.50
90th Percentile £34.84 £57.40 £45.10
Central London median hourly rate £21.73 £47.50 £21.75
% change year-on-year -54.26% +118.39% +1.16%

ES6
Job Vacancy Trend in the City of London

Job postings citing ES6 as a proportion of all IT jobs advertised in the City of London.

Job vacancy trend for ES6 in the City of London

ES6
Contractor Daily Rate Trend in the City of London

3-month moving average daily rate quoted in jobs citing ES6 in the City of London.

Daily rate trend for ES6 in the City of London

ES6
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing ES6 in the City of London over the 6 months to 18 April 2021.

Daily rate histogram for ES6 in the City of London

For the 6 months to 18 April 2021, IT contractor jobs citing ES6 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 across the City of London region with a requirement for ES6.

1 18 (100.00%) JavaScript
2 11 (61.11%) CSS
3 10 (55.56%) Node.js
4 9 (50.00%) Agile Software Development
4 9 (50.00%) HTML
4 9 (50.00%) React
5 7 (38.89%) Front End Development
5 7 (38.89%) Redux
6 6 (33.33%) HTML5
7 5 (27.78%) Sass
7 5 (27.78%) AngularJS
7 5 (27.78%) webpack
7 5 (27.78%) Java
7 5 (27.78%) Git (software)
7 5 (27.78%) REST
7 5 (27.78%) Test Automation
8 4 (22.22%) RESTful
8 4 (22.22%) CSS3
8 4 (22.22%) Spring
8 4 (22.22%) User Experience
8 4 (22.22%) Microservices
8 4 (22.22%) Kubernetes
8 4 (22.22%) Karma Test Runner
8 4 (22.22%) TypeScript
8 4 (22.22%) Docker
8 4 (22.22%) Express
8 4 (22.22%) Jasmine
8 4 (22.22%) Serverless
8 4 (22.22%) GraphQL
9 3 (16.67%) API Development

ES6
Co-occurring IT Skills in the City of London 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 3 (16.67%) Elasticsearch
2 2 (11.11%) Camunda
3 1 (5.56%) Adobe Experience Manager
3 1 (5.56%) SharePoint
Business Applications
1 1 (5.56%) Payment Gateway
Cloud Services
1 4 (22.22%) Serverless
2 3 (16.67%) AWS
3 2 (11.11%) AWS Lambda
3 2 (11.11%) Azure
3 2 (11.11%) GitHub
3 2 (11.11%) npm
4 1 (5.56%) Azure Functions
4 1 (5.56%) GCP
4 1 (5.56%) Logic Apps
Communications & Networking
1 1 (5.56%) HTTP
Database & Business Intelligence
1 3 (16.67%) PostgreSQL
2 1 (5.56%) SQL Server
Development Applications
1 5 (27.78%) Git (software)
1 5 (27.78%) webpack
2 4 (22.22%) Jasmine
2 4 (22.22%) Karma Test Runner
3 3 (16.67%) Mocha
4 2 (11.11%) Jenkins
4 2 (11.11%) Protractor
5 1 (5.56%) CircleCI
5 1 (5.56%) Cucumber
5 1 (5.56%) Cypress.io
5 1 (5.56%) JIRA
General
1 2 (11.11%) Finance
1 2 (11.11%) Retail
Job Titles
1 16 (88.89%) Developer
2 4 (22.22%) Front End Developer (Client-Side Developer)
2 4 (22.22%) JavaScript Developer
3 3 (16.67%) Senior Developer
4 2 (11.11%) React Developer
4 2 (11.11%) SEO Developer
4 2 (11.11%) Software Developer
4 2 (11.11%) Web Developer
5 1 (5.56%) .NET Developer
5 1 (5.56%) Angular Developer
5 1 (5.56%) Applications Developer
5 1 (5.56%) Azure Engineer
5 1 (5.56%) Azure Software Engineer
5 1 (5.56%) Full Stack Developer
5 1 (5.56%) Java Developer
5 1 (5.56%) Lead Developer
5 1 (5.56%) Lead Java Developer
5 1 (5.56%) Node.js Developer
5 1 (5.56%) Senior Software Developer
5 1 (5.56%) Software Engineer
Libraries, Frameworks & Software Standards
1 11 (61.11%) CSS
2 10 (55.56%) Node.js
3 9 (50.00%) HTML
3 9 (50.00%) React
4 7 (38.89%) Redux
5 6 (33.33%) HTML5
6 5 (27.78%) AngularJS
6 5 (27.78%) REST
6 5 (27.78%) Sass
7 4 (22.22%) CSS3
7 4 (22.22%) Express
7 4 (22.22%) GraphQL
7 4 (22.22%) RESTful
7 4 (22.22%) Spring
8 3 (16.67%) Spring Boot
9 2 (11.11%) .NET
9 2 (11.11%) JSON
9 2 (11.11%) LESS
9 2 (11.11%) RxJS
9 2 (11.11%) Vue.js
Miscellaneous
1 4 (22.22%) User Experience
2 2 (11.11%) Cloud Native
2 2 (11.11%) Fixed Income
2 2 (11.11%) Self-Motivation
3 1 (5.56%) Blog
3 1 (5.56%) Client/Server
3 1 (5.56%) Greenfield Project
3 1 (5.56%) Mobile App
Operating Systems
1 1 (5.56%) Android
1 1 (5.56%) Apple iOS
Processes & Methodologies
1 9 (50.00%) Agile Software Development
2 7 (38.89%) Front End Development
3 5 (27.78%) Test Automation
4 4 (22.22%) Microservices
5 3 (16.67%) API Development
5 3 (16.67%) Continuous Integration
5 3 (16.67%) Unit Testing
5 3 (16.67%) Web Development
6 2 (11.11%) Asynchronous Programming
6 2 (11.11%) DevOps
6 2 (11.11%) Electronic Trading
6 2 (11.11%) Fintech
6 2 (11.11%) Manual Testing
6 2 (11.11%) Migration
6 2 (11.11%) SEO
6 2 (11.11%) Software Engineering
6 2 (11.11%) TDD
6 2 (11.11%) The Twelve-Factor App
6 2 (11.11%) Web Design
7 1 (5.56%) Kalman Filter
Programming Languages
1 18 (100.00%) JavaScript
2 5 (27.78%) Java
3 4 (22.22%) TypeScript
4 2 (11.11%) ES7
4 2 (11.11%) Java 8
Qualifications
1 2 (11.11%) SC Cleared
1 2 (11.11%) Security Cleared
Quality Assurance & Compliance
1 1 (5.56%) QA
System Software
1 4 (22.22%) Docker
Systems Management
1 4 (22.22%) Kubernetes
Vendors
1 2 (11.11%) Adobe
2 1 (5.56%) WorldPay