Period
to 19 January 2019

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 19 January 2019 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
19 Jan 2019
Same period 2018 Same period 2017
Rank 230 223 227
Rank change year-on-year -7 +4 -
Contract jobs citing Babel 23 33 8
As % of all contract IT jobs advertised in the City of London 0.34% 0.47% 0.13%
As % of the Development Applications category 1.49% 2.48% 0.72%
Number of daily rates quoted 19 33 8
City of London median daily rate £550 £550 £438
Median daily rate % change year-on-year - +25.71% -
10th Percentile £404 £450 £381
90th Percentile £620 £638 £534
Central London median daily rate £550 £525 £450
% change year-on-year +4.76% +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 1,546 1,332 1,115
As % of all contract IT jobs advertised in the City of London 22.87% 18.78% 17.90%
Number of daily rates quoted 1,239 1,070 908
City of London median daily rate £513 £500 £475
Median daily rate % change year-on-year +2.50% +5.26% +5.56%
10th Percentile £375 £363 £354
90th Percentile £650 £638 £625
Central London median daily rate £518 £500 £475
% change year-on-year +3.50% +5.26% +5.56%
Number of hourly rates quoted 2 2 1
City of London median hourly rate £28.75 £45.25 £32.50
Median hourly rate % change year-on-year -36.46% +39.23% -13.33%
10th Percentile £22.63 £27.63 £31.25
90th Percentile £33.88 £63.48 £33.75
Central London median hourly rate £28.75 £30.00 £32.50
% change year-on-year -4.17% -7.69% -13.33%

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 19 January 2019.

Contractor daily rate histogram for Babel in the City of London

For the 6 months to 19 January 2019, IT contractor jobs citing Babel 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 Babel.

1 22 (95.65%) React
2 20 (86.96%) webpack
3 17 (73.91%) JavaScript
3 17 (73.91%) CSS
4 14 (60.87%) HTML
4 14 (60.87%) ES6
4 14 (60.87%) Sass
5 12 (52.17%) Redux
5 12 (52.17%) User Experience
6 11 (47.83%) Node.js
6 11 (47.83%) Agile Software Development
7 10 (43.48%) TDD
7 10 (43.48%) Git (software)
8 9 (39.13%) RESTful
8 9 (39.13%) Jest
9 8 (34.78%) GraphQL
9 8 (34.78%) Mocha
9 8 (34.78%) Scrum
9 8 (34.78%) Java
9 8 (34.78%) CSS3
9 8 (34.78%) Docker
10 7 (30.43%) Web Services
10 7 (30.43%) HTML5
11 6 (26.09%) OpenID
11 6 (26.09%) BDD
11 6 (26.09%) OAuth
11 6 (26.09%) Unit Testing
11 6 (26.09%) Microservices
11 6 (26.09%) TypeScript
11 6 (26.09%) JSLint

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:

Application Platforms
1 4 (17.39%) Confluence
2 3 (13.04%) Tomcat
3 1 (4.35%) Cloud Foundry
3 1 (4.35%) Mule
Applications
1 2 (8.70%) Adobe Illustrator
1 2 (8.70%) InVision
Cloud Services
1 6 (26.09%) Serverless
2 3 (13.04%) Amazon AWS
2 3 (13.04%) GitHub
2 3 (13.04%) npm
3 2 (8.70%) Google Cloud Platform
3 2 (8.70%) Heroku
3 2 (8.70%) Yarn
4 1 (4.35%) IaaS
4 1 (4.35%) Microsoft Azure
4 1 (4.35%) PaaS
4 1 (4.35%) Slack
Communications & Networking
1 3 (13.04%) HTTP
Database & Business Intelligence
1 6 (26.09%) Big Data
1 6 (26.09%) Blockchain
2 5 (21.74%) PostgreSQL
3 3 (13.04%) MongoDB
3 3 (13.04%) Redis
4 1 (4.35%) MySQL
Development Applications
1 20 (86.96%) webpack
2 10 (43.48%) Git (software)
3 8 (34.78%) Mocha
4 6 (26.09%) Jasmine
5 4 (17.39%) JIRA
5 4 (17.39%) Selenium
6 3 (13.04%) CircleCI
6 3 (13.04%) Cucumber
7 2 (8.70%) Grunt
7 2 (8.70%) gulp
7 2 (8.70%) Jenkins
7 2 (8.70%) Mercurial
8 1 (4.35%) JUnit
8 1 (4.35%) Maven
8 1 (4.35%) SonarQube
8 1 (4.35%) Sonatype Nexus
General
1 4 (17.39%) Banking
2 3 (13.04%) Finance
3 1 (4.35%) Digital Economy
3 1 (4.35%) Marketing
3 1 (4.35%) Retail
Job Titles
1 23 (100.00%) Developer
2 14 (60.87%) React Developer
3 7 (30.43%) JavaScript Developer
4 6 (26.09%) Full Stack Developer
5 4 (17.39%) UI Developer
6 2 (8.70%) Agile Developer
6 2 (8.70%) Front End Developer (Client-Side Developer)
6 2 (8.70%) Integration Developer
6 2 (8.70%) Java Developer
7 1 (4.35%) Node.js Developer
7 1 (4.35%) Senior Developer
7 1 (4.35%) Senior JavaScript Developer
7 1 (4.35%) Senior React Developer
Libraries, Frameworks & Software Standards
1 22 (95.65%) React
2 17 (73.91%) CSS
3 14 (60.87%) HTML
3 14 (60.87%) Sass
4 12 (52.17%) Redux
5 11 (47.83%) Node.js
6 9 (39.13%) Jest
6 9 (39.13%) RESTful
7 8 (34.78%) CSS3
7 8 (34.78%) GraphQL
8 7 (30.43%) HTML5
8 7 (30.43%) Web Services
9 6 (26.09%) JSLint
9 6 (26.09%) OAuth
9 6 (26.09%) OpenID
9 6 (26.09%) React Native
10 5 (21.74%) OAuth2
10 5 (21.74%) Spring
11 4 (17.39%) Enzyme
11 4 (17.39%) Spring Boot
Miscellaneous
1 12 (52.17%) User Experience
2 4 (17.39%) Mobile App
3 3 (13.04%) Algorithms
4 2 (8.70%) Greenfield Project
5 1 (4.35%) Fintech
Operating Systems
1 2 (8.70%) Android
1 2 (8.70%) Apple iOS
2 1 (4.35%) Linux
Processes & Methodologies
1 11 (47.83%) Agile Software Development
2 10 (43.48%) TDD
3 8 (34.78%) Scrum
4 6 (26.09%) BDD
4 6 (26.09%) Front End Development
4 6 (26.09%) Microservices
4 6 (26.09%) Unit Testing
4 6 (26.09%) Wireframes
5 5 (21.74%) Continuous Integration
6 3 (13.04%) DevOps
6 3 (13.04%) Software Engineering
7 2 (8.70%) E-Commerce
7 2 (8.70%) Kanban
7 2 (8.70%) Open Source
7 2 (8.70%) Pair Programming
7 2 (8.70%) Web Accessibility
8 1 (4.35%) Integration Testing
8 1 (4.35%) Mathematics
8 1 (4.35%) Online Marketing
8 1 (4.35%) Test Automation
Programming Languages
1 17 (73.91%) JavaScript
2 14 (60.87%) ES6
3 8 (34.78%) Java
4 6 (26.09%) JSX
4 6 (26.09%) TypeScript
5 5 (21.74%) Java 8
6 4 (17.39%) ES7
7 1 (4.35%) ES8
7 1 (4.35%) Kotlin
7 1 (4.35%) Objective-C
7 1 (4.35%) PHP
7 1 (4.35%) SQL
Quality Assurance & Compliance
1 3 (13.04%) QA
System Software
1 8 (34.78%) Docker
Systems Management
1 3 (13.04%) Ansible
1 3 (13.04%) Marathon
1 3 (13.04%) Mesos
2 1 (4.35%) Kubernetes
Vendors
1 2 (8.70%) Google
2 1 (4.35%) AppDynamics
2 1 (4.35%) Splunk