Period
to 21 November 2017

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for Babel skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited Babel over the 6 months to 21 November 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.

Babel JavaScript Compiler
Central London > City of London
6 months to
21 Nov 2017
Same period 2016 Same period 2015
Rank 228 243 -
Rank change year-on-year +15 - -
Contract jobs citing Babel 24 6 0
As % of all contract IT jobs advertised in the City of London 0.34% 0.090% -
As % of the Development Applications category 1.73% 0.49% -
Number of daily rates quoted 23 6 0
City of London median daily rate £525 £463 -
Median daily rate % change year-on-year +13.51% - -
Central London median daily rate £525 £450 -
% change year-on-year +16.67% - -
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

Babel is in the Development Applications 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 development application skills.

All Development Application Skills
City of London
Contract vacancies with a requirement for development application skills 1388 1221 1324
As % of all contract IT jobs advertised in the City of London 19.41% 18.35% 14.61%
Number of daily rates quoted 1095 996 1095
City of London median daily rate £500 £475 £450
Median daily rate % change year-on-year +5.26% +5.56% +5.88%
10th Percentile £363 £338 £309
90th Percentile £638 £625 £638
Central London median daily rate £498 £475 £450
% change year-on-year +4.74% +5.56% +5.88%
Number of hourly rates quoted 3 1 5
City of London median hourly rate £25.50 £32.50 £37.50
Median hourly rate % change year-on-year -21.54% -13.33% +3.45%
10th Percentile £23.24 £31.25 £35.50
90th Percentile £59.45 £33.75 £55.00
Central London median hourly rate £30.00 £32.50 £37.50
% change year-on-year -7.69% -13.33% +3.45%

Babel
Job Vacancy Trend in the City of London

Job postings citing Babel as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for Babel in the City of London

Babel
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 Babel in the City of London.

Contractor daily rate trend for Babel in the City of London

Babel
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing Babel in the City of London over the 6 months to 21 November 2017.

Contractor daily rate histogram for Babel in the City of London

For the 6 months to 21 November 2017, IT contractor jobs citing Babel 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 Babel.

1 23 (95.83%) JavaScript
1 23 (95.83%) webpack
2 19 (79.17%) React
2 19 (79.17%) Redux
3 18 (75.00%) ES6
4 17 (70.83%) Agile Software Development
5 16 (66.67%) Node.js
6 15 (62.50%) CSS
7 13 (54.17%) HTML
8 12 (50.00%) TDD
8 12 (50.00%) BDD
9 11 (45.83%) CSS3
10 10 (41.67%) HTML5
10 10 (41.67%) RxJS
10 10 (41.67%) npm
11 9 (37.50%) React Native
12 8 (33.33%) ECMAScript
12 8 (33.33%) JSON
12 8 (33.33%) RESTful
13 7 (29.17%) REST
13 7 (29.17%) Sass
13 7 (29.17%) E-Commerce
13 7 (29.17%) TypeScript
14 6 (25.00%) Jenkins
14 6 (25.00%) Dependency Management
14 6 (25.00%) Performance Optimisation
14 6 (25.00%) Front End Development
14 6 (25.00%) Scrum
14 6 (25.00%) Web Application Development
14 6 (25.00%) WebSockets

Babel
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:

Cloud Services
1 10 (41.67%) npm
2 2 (8.33%) Amazon AWS
2 2 (8.33%) Serverless
3 1 (4.17%) Yarn
Communications & Networking
1 2 (8.33%) Ethernet
1 2 (8.33%) Unified Communications
1 2 (8.33%) VPLS
Database & Business Intelligence
1 2 (8.33%) MongoDB
1 2 (8.33%) NoSQL
Development Applications
1 23 (95.83%) webpack
2 6 (25.00%) Jenkins
3 4 (16.67%) Git (software)
3 4 (16.67%) JIRA
4 2 (8.33%) Bitbucket
4 2 (8.33%) TeamCity
5 1 (4.17%) PostCSS
5 1 (4.17%) Visual Studio
5 1 (4.17%) Visual Studio Team System
General
1 4 (16.67%) Retail
2 2 (8.33%) Advertising
2 2 (8.33%) Banking
2 2 (8.33%) Finance
2 2 (8.33%) Telecoms
3 1 (4.17%) Digital Economy
3 1 (4.17%) Marketing
Job Titles
1 23 (95.83%) Developer
2 10 (41.67%) Senior Developer
3 8 (33.33%) JavaScript Developer
4 5 (20.83%) Full Stack Developer
5 3 (12.50%) Senior Full Stack Developer
5 3 (12.50%) Senior JavaScript Developer
6 1 (4.17%) Front End Developer (Client-Side Developer)
6 1 (4.17%) HTML CSS Developer
6 1 (4.17%) HTML Developer
6 1 (4.17%) Lead Developer
6 1 (4.17%) Software Engineer
Libraries, Frameworks & Software Standards
1 19 (79.17%) React
1 19 (79.17%) Redux
2 16 (66.67%) Node.js
3 15 (62.50%) CSS
4 13 (54.17%) HTML
5 11 (45.83%) CSS3
6 10 (41.67%) HTML5
6 10 (41.67%) RxJS
7 9 (37.50%) React Native
8 8 (33.33%) JSON
8 8 (33.33%) RESTful
9 7 (29.17%) REST
9 7 (29.17%) Sass
10 6 (25.00%) WebSockets
11 4 (16.67%) Web Services
12 2 (8.33%) DOM
12 2 (8.33%) Express
12 2 (8.33%) Ext JS
12 2 (8.33%) JMS
12 2 (8.33%) LESS
Miscellaneous
1 4 (16.67%) User Experience
1 4 (16.67%) Video on Demand
2 2 (8.33%) Data Centre
2 2 (8.33%) Data Structures
3 1 (4.17%) Blog
3 1 (4.17%) W3C
Operating Systems
1 3 (12.50%) Android
1 3 (12.50%) Apple iOS
1 3 (12.50%) Linux
2 1 (4.17%) CoreOS
Processes & Methodologies
1 17 (70.83%) Agile Software Development
2 12 (50.00%) BDD
2 12 (50.00%) TDD
3 7 (29.17%) E-Commerce
4 6 (25.00%) Dependency Management
4 6 (25.00%) Front End Development
4 6 (25.00%) Performance Optimisation
4 6 (25.00%) Scrum
4 6 (25.00%) Web Application Development
5 5 (20.83%) Unit Testing
6 4 (16.67%) Continuous Integration
6 4 (16.67%) DevOps
6 4 (16.67%) Test Automation
7 3 (12.50%) Open Source
7 3 (12.50%) Software Engineering
8 2 (8.33%) Benchmarking
8 2 (8.33%) Business Continuity
8 2 (8.33%) Disaster Recovery
8 2 (8.33%) Performance Monitoring
8 2 (8.33%) Re-Platforming
Programming Languages
1 23 (95.83%) JavaScript
2 18 (75.00%) ES6
3 8 (33.33%) ECMAScript
4 7 (29.17%) TypeScript
5 2 (8.33%) C#
6 1 (4.17%) GraphQL
6 1 (4.17%) Java
Quality Assurance & Compliance
1 3 (12.50%) QA
System Software
1 5 (20.83%) Docker
Systems Management
1 3 (12.50%) Ansible
2 1 (4.17%) Kubernetes
2 1 (4.17%) Mesos
2 1 (4.17%) Opscode Chef
Vendors
1 4 (16.67%) Atlassian
2 2 (8.33%) Salesforce.com
2 2 (8.33%) ServiceNow
3 1 (4.17%) Microsoft