Period
to 22 February 2018

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 22 February 2018 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
22 Feb 2018
Same period 2017 Same period 2016
Rank 209 221 -
Rank change year-on-year +12 - -
Contract jobs citing Babel 38 10 0
As % of all contract IT jobs advertised in the City of London 0.53% 0.16% -
As % of the Development Applications category 2.83% 0.92% -
Number of daily rates quoted 37 9 0
City of London median daily rate £575 £450 -
Median daily rate % change year-on-year +27.78% - -
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 1,341 1,089 979
As % of all contract IT jobs advertised in the City of London 18.88% 17.73% 14.64%
Number of daily rates quoted 1,087 900 793
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 £331 £308
90th Percentile £638 £625 £638
Central London median daily rate £500 £475 £450
% change year-on-year +5.26% +5.56% +5.88%
Number of hourly rates quoted 3 0 5
City of London median hourly rate £65.00 - £37.50
10th Percentile £62.50 - £32.28
90th Percentile £71.12 - £55.00
Central London median hourly rate £65.00 - £37.50

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 22 February 2018.

Contractor daily rate histogram for Babel in the City of London

For the 6 months to 22 February 2018, 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 36 (94.74%) JavaScript
1 36 (94.74%) webpack
2 32 (84.21%) React
3 28 (73.68%) Node.js
3 28 (73.68%) ES6
3 28 (73.68%) Redux
4 27 (71.05%) Agile Software Development
4 27 (71.05%) TDD
5 26 (68.42%) BDD
6 25 (65.79%) CSS
7 22 (57.89%) HTML
8 17 (44.74%) TypeScript
9 15 (39.47%) Docker
9 15 (39.47%) HTML5
10 14 (36.84%) CSS3
10 14 (36.84%) Sass
10 14 (36.84%) RESTful
10 14 (36.84%) RxJS
11 12 (31.58%) Unit Testing
12 11 (28.95%) Web Services
13 10 (26.32%) Software Engineering
14 9 (23.68%) Test Automation
14 9 (23.68%) Banking
14 9 (23.68%) Express
14 9 (23.68%) Jenkins
14 9 (23.68%) React Native
15 8 (21.05%) npm
15 8 (21.05%) Ansible
15 8 (21.05%) Video on Demand
15 8 (21.05%) Continuous Integration

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 1 (2.63%) Apache
1 1 (2.63%) Apache Spark
1 1 (2.63%) Jetty
1 1 (2.63%) nginx
Cloud Services
1 8 (21.05%) npm
2 7 (18.42%) Amazon AWS
2 7 (18.42%) Serverless
3 3 (7.89%) Microsoft Azure
4 2 (5.26%) Amazon S3
4 2 (5.26%) Google Cloud Platform
5 1 (2.63%) Amazon EC2
5 1 (2.63%) Amazon Kinesis
5 1 (2.63%) Amazon SQS
5 1 (2.63%) AWS CloudTrail
5 1 (2.63%) AWS Lambda
5 1 (2.63%) Azure Active Directory
5 1 (2.63%) CloudFront
5 1 (2.63%) GitHub
5 1 (2.63%) Route 53
5 1 (2.63%) Virtual Private Cloud
5 1 (2.63%) Yarn
Communications & Networking
1 2 (5.26%) Ethernet
1 2 (5.26%) Unified Communications
1 2 (5.26%) VPLS
Database & Business Intelligence
1 3 (7.89%) MongoDB
1 3 (7.89%) NoSQL
2 2 (5.26%) Amazon DynamoDB
2 2 (5.26%) LevelDB
3 1 (2.63%) Data Lake
3 1 (2.63%) Hadoop
3 1 (2.63%) HDInsight
3 1 (2.63%) MySQL
3 1 (2.63%) PostgreSQL
Development Applications
1 36 (94.74%) webpack
2 9 (23.68%) Jenkins
3 7 (18.42%) Git (software)
4 4 (10.53%) Mocha
4 4 (10.53%) Sinon.JS
5 2 (5.26%) Atlassian Bamboo
5 2 (5.26%) Bitbucket
5 2 (5.26%) Gerrit
5 2 (5.26%) Grunt
5 2 (5.26%) JIRA
5 2 (5.26%) TeamCity
6 1 (2.63%) Bower
6 1 (2.63%) Gradle
6 1 (2.63%) gulp
6 1 (2.63%) PostCSS
6 1 (2.63%) Travis CI
6 1 (2.63%) Visual Studio
6 1 (2.63%) Visual Studio Team System
General
1 9 (23.68%) Banking
2 4 (10.53%) Finance
3 3 (7.89%) Retail Banking
3 3 (7.89%) Telecoms
4 2 (5.26%) Advertising
4 2 (5.26%) Retail
5 1 (2.63%) Digital Economy
5 1 (2.63%) Marketing
Job Titles
1 31 (81.58%) Developer
2 18 (47.37%) React Developer
3 13 (34.21%) JavaScript Developer
4 8 (21.05%) Senior Developer
5 6 (15.79%) Senior React Developer
6 5 (13.16%) Full Stack Developer
7 4 (10.53%) Software Engineer
8 2 (5.26%) AWS Developer
8 2 (5.26%) HTML CSS Developer
8 2 (5.26%) HTML Developer
8 2 (5.26%) Node.js Developer
8 2 (5.26%) Senior JavaScript Developer
8 2 (5.26%) Senior Software Engineer
9 1 (2.63%) Data Engineer
9 1 (2.63%) JavaScript Engineer
9 1 (2.63%) Machine Learning Developer
9 1 (2.63%) Senior Data Engineer
9 1 (2.63%) Senior Data Scientist
9 1 (2.63%) Senior DevOps
9 1 (2.63%) Senior Full Stack Developer
Libraries, Frameworks & Software Standards
1 32 (84.21%) React
2 28 (73.68%) Node.js
2 28 (73.68%) Redux
3 25 (65.79%) CSS
4 22 (57.89%) HTML
5 15 (39.47%) HTML5
6 14 (36.84%) CSS3
6 14 (36.84%) RESTful
6 14 (36.84%) RxJS
6 14 (36.84%) Sass
7 11 (28.95%) Web Services
8 9 (23.68%) Express
8 9 (23.68%) React Native
9 6 (15.79%) AngularJS
9 6 (15.79%) JMS
10 5 (13.16%) JSON
11 4 (10.53%) Chai
11 4 (10.53%) REST
11 4 (10.53%) WebSockets
12 3 (7.89%) Fusebox
Miscellaneous
1 8 (21.05%) Video on Demand
2 5 (13.16%) User Experience
3 3 (7.89%) Mobile App
4 2 (5.26%) Data Centre
5 1 (2.63%) Data Structures
5 1 (2.63%) Fintech
5 1 (2.63%) Greenfield Project
Operating Systems
1 6 (15.79%) Linux
2 3 (7.89%) Android
3 2 (5.26%) Apple iOS
Processes & Methodologies
1 27 (71.05%) Agile Software Development
1 27 (71.05%) TDD
2 26 (68.42%) BDD
3 12 (31.58%) Unit Testing
4 10 (26.32%) Software Engineering
5 9 (23.68%) Test Automation
6 8 (21.05%) Continuous Integration
7 7 (18.42%) DevOps
7 7 (18.42%) Front End Development
8 6 (15.79%) API Design
8 6 (15.79%) API Development
8 6 (15.79%) E-Commerce
8 6 (15.79%) Scrum
9 4 (10.53%) Dependency Management
9 4 (10.53%) Open Source
9 4 (10.53%) Pair Programming
9 4 (10.53%) Performance Optimisation
9 4 (10.53%) Re-Platforming
9 4 (10.53%) Web Application Development
9 4 (10.53%) Web Development
Programming Languages
1 36 (94.74%) JavaScript
2 28 (73.68%) ES6
3 17 (44.74%) TypeScript
4 3 (7.89%) Java
5 2 (5.26%) C#
6 1 (2.63%) ES8
6 1 (2.63%) GraphQL
6 1 (2.63%) Python
6 1 (2.63%) R
6 1 (2.63%) Scala
6 1 (2.63%) SQL
Qualifications
1 1 (2.63%) SC Cleared
1 1 (2.63%) Security Cleared
Quality Assurance & Compliance
1 7 (18.42%) QA
System Software
1 15 (39.47%) Docker
2 1 (2.63%) Virtual Machines
Systems Management
1 8 (21.05%) Ansible
2 3 (7.89%) Terraform
Vendors
1 3 (7.89%) DevExpress
1 3 (7.89%) Google
2 2 (5.26%) Atlassian
2 2 (5.26%) Salesforce.com
2 2 (5.26%) ServiceNow
3 1 (2.63%) Databricks
3 1 (2.63%) Microsoft