The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for ECMAScript skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited ECMAScript over the 3 months to 22 June 2017 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
London / City of London
3 months to
22 Jun 2017
Same period 2016 Same period 2015
Rank 164 165 -
Rank change year-on-year +1 -  
Contract jobs citing ECMAScript 1 4 0
As % of all contract IT jobs advertised in the City of London 0.030% 0.12% -
As % of the Programming Languages category 0.059% 0.24% -
Number of daily rates quoted 0 4 0
Median daily rate - £450 -
UK excluding London median daily rate £425 £450 £340
% change year-on-year -5.55% +32.35%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate - - -

ECMAScript is in the programming language skills category. The next 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 programming language skills.

Contract Programming Language Skills
City of London
Contract job vacancies with a requirement for programming language skills 1699 1650 2497
As % of all contract IT job vacancies advertised in the City of London 51.55% 48.47% 42.96%
Number of daily rates quoted 1363 1407 2061
Median daily rate £510 £475 £463
Median daily rate % change year-on-year +7.36% +2.70%  
90% offered a daily rate of more than £363 £325 £320
10% offered a daily rate of more than £650 £625 £625
UK excluding London median daily rate £400 £375 £350
% change year-on-year +6.66% +7.14%  
Number of hourly rates quoted 4 5 22
Median hourly rate £21.50 £44.00 £24.23
Median hourly rate % change year-on-year -51.13% +81.59%  
90% offered a hourly rate of more than £16.25 £19.00 £19.72
10% offered a hourly rate of more than £31.25 £80.00 £54.00
UK excluding London median hourly rate £42.50 £37.00 £36.00
% change year-on-year +14.86% +2.77%  

ECMAScript
Job Vacancy Trend in the City of London

The job posting trend of jobs advertised in the City of London citing ECMAScript as a proportion of all contract or permanent IT jobs with a match in the Programming Languages category.

Job vacancy trend for ECMAScript in the City of London

ECMAScript
Contractor Daily Rate Trend in the City of London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing ECMAScript in the City of London.

Contractor daily rate trend for ECMAScript in the City of London

For the 6 months to 22 June 2017, IT contractor jobs citing ECMAScript also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the City of London region with a requirement for ECMAScript.

1 4 (100.00%) JavaScript
1 4 (100.00%) React
2 3 (75.00%) Performance Optimisation
2 3 (75.00%) HTML
2 3 (75.00%) Agile Software Development
2 3 (75.00%) TDD
2 3 (75.00%) CSS
2 3 (75.00%) HTML5
2 3 (75.00%) CSS3
2 3 (75.00%) Responsive Web Design
2 3 (75.00%) Sass
2 3 (75.00%) React Native
3 1 (25.00%) DOM Manipulation/Scripting
3 1 (25.00%) Front End Development
3 1 (25.00%) Isomorphic JavaScript
3 1 (25.00%) Babel
3 1 (25.00%) Data Structures
3 1 (25.00%) DOM
3 1 (25.00%) W3C
3 1 (25.00%) JSON
3 1 (25.00%) RESTful
3 1 (25.00%) Redux
3 1 (25.00%) webpack

ECMAScript
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:

Development Applications
1 1 (25.00%) Babel
1 1 (25.00%) webpack
Job Titles
1 4 (100.00%) Developer
2 3 (75.00%) JavaScript Developer
Libraries, Frameworks & Software Standards
1 4 (100.00%) React
2 3 (75.00%) CSS
2 3 (75.00%) CSS3
2 3 (75.00%) HTML
2 3 (75.00%) HTML5
2 3 (75.00%) React Native
2 3 (75.00%) Sass
3 1 (25.00%) DOM
3 1 (25.00%) JSON
3 1 (25.00%) Redux
3 1 (25.00%) RESTful
Miscellaneous
1 1 (25.00%) Data Structures
1 1 (25.00%) W3C
Processes & Methodologies
1 3 (75.00%) Agile Software Development
1 3 (75.00%) Performance Optimisation
1 3 (75.00%) Responsive Web Design
1 3 (75.00%) TDD
2 1 (25.00%) DOM Manipulation/Scripting
2 1 (25.00%) Front End Development
2 1 (25.00%) Isomorphic JavaScript
Programming Languages
1 4 (100.00%) JavaScript
City, London
ANSON MCCADE
Rate: £450 - £550
Posted: 3 days ago