Period
to 20 May 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 20 May 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
20 May 2018
Same period 2017 Same period 2016
Rank 212 212 226
Rank change year-on-year 0 +14 -
Contract jobs citing Babel 33 13 2
As % of all contract IT jobs advertised in the City of London 0.48% 0.21% 0.031%
As % of the Development Applications category 2.23% 1.19% 0.20%
Number of daily rates quoted 32 12 2
City of London median daily rate £531 £438 £519
Median daily rate % change year-on-year +21.43% -15.66% -
10th Percentile £463 £363 £478
90th Percentile £638 £524 £564
Central London median daily rate £500 £438 £500
% change year-on-year +14.29% -12.50% -
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 1,478 1,094 978
As % of all contract IT jobs advertised in the City of London 21.31% 17.73% 15.12%
Number of daily rates quoted 1,180 848 795
City of London median daily rate £500 £450 £450
Median daily rate % change year-on-year +11.11% - +5.88%
10th Percentile £375 £325 £313
90th Percentile £638 £625 £588
Central London median daily rate £500 £450 £450
% change year-on-year +11.11% - +5.88%
Number of hourly rates quoted 5 0 2
City of London median hourly rate £32.00 - £36.82
10th Percentile £27.40 - £30.78
90th Percentile £70.22 - £45.26
Central London median hourly rate £32.00 - £36.82

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 20 May 2018.

Contractor daily rate histogram for Babel in the City of London

For the 6 months to 20 May 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 32 (96.97%) webpack
2 29 (87.88%) React
2 29 (87.88%) JavaScript
3 26 (78.79%) ES6
3 26 (78.79%) Node.js
4 21 (63.64%) TDD
4 21 (63.64%) Redux
5 20 (60.61%) CSS
6 19 (57.58%) Agile Software Development
7 18 (54.55%) BDD
8 14 (42.42%) Sass
9 13 (39.39%) Docker
9 13 (39.39%) RESTful
10 12 (36.36%) TypeScript
11 11 (33.33%) HTML
11 11 (33.33%) Serverless
12 10 (30.30%) Express
13 9 (27.27%) Banking
13 9 (27.27%) Software Engineering
14 8 (24.24%) User Experience
15 7 (21.21%) RxJS
15 7 (21.21%) OAuth2
15 7 (21.21%) CSS3
15 7 (21.21%) HTML5
15 7 (21.21%) Mocha
15 7 (21.21%) Web Services
15 7 (21.21%) OAuth
15 7 (21.21%) Unit Testing
15 7 (21.21%) Chai
16 6 (18.18%) Wireframes

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 (3.03%) Apache
1 1 (3.03%) Apache Spark
1 1 (3.03%) Jetty
1 1 (3.03%) nginx
Cloud Services
1 11 (33.33%) Serverless
2 5 (15.15%) Amazon AWS
3 3 (9.09%) Google Cloud Platform
3 3 (9.09%) Microsoft Azure
4 2 (6.06%) Amazon S3
5 1 (3.03%) Amazon EC2
5 1 (3.03%) Amazon Kinesis
5 1 (3.03%) Amazon SQS
5 1 (3.03%) AWS CloudTrail
5 1 (3.03%) AWS Lambda
5 1 (3.03%) Azure Active Directory
5 1 (3.03%) CloudFront
5 1 (3.03%) GitHub
5 1 (3.03%) npm
5 1 (3.03%) Route 53
5 1 (3.03%) Virtual Private Cloud
Communications & Networking
1 6 (18.18%) HTTP
Database & Business Intelligence
1 2 (6.06%) Amazon DynamoDB
1 2 (6.06%) LevelDB
2 1 (3.03%) Data Lake
2 1 (3.03%) Hadoop
2 1 (3.03%) HDInsight
2 1 (3.03%) MongoDB
2 1 (3.03%) MySQL
2 1 (3.03%) NoSQL
2 1 (3.03%) PostgreSQL
Development Applications
1 32 (96.97%) webpack
2 7 (21.21%) Mocha
3 5 (15.15%) Jasmine
3 5 (15.15%) Jenkins
4 4 (12.12%) Sinon.JS
5 3 (9.09%) Git (software)
6 2 (6.06%) Atlassian Bamboo
6 2 (6.06%) Gerrit
6 2 (6.06%) Grunt
7 1 (3.03%) Bower
7 1 (3.03%) CircleCI
7 1 (3.03%) Gradle
7 1 (3.03%) gulp
7 1 (3.03%) Travis CI
General
1 9 (27.27%) Banking
2 5 (15.15%) Finance
3 4 (12.12%) Retail Banking
4 2 (6.06%) Retail
5 1 (3.03%) Telecoms
Job Titles
1 24 (72.73%) Developer
2 17 (51.52%) JavaScript Developer
3 16 (48.48%) React Developer
4 9 (27.27%) Node.js Developer
5 6 (18.18%) UI Developer
6 4 (12.12%) Software Engineer
7 3 (9.09%) Full Stack Developer
7 3 (9.09%) UI/UX Developer
7 3 (9.09%) UX Developer
8 2 (6.06%) AWS Developer
8 2 (6.06%) Senior Developer
8 2 (6.06%) Senior Software Engineer
9 1 (3.03%) Cloud Engineer
9 1 (3.03%) Cloud Software Engineer
9 1 (3.03%) DevOps Engineer
9 1 (3.03%) HTML Developer
9 1 (3.03%) Scrum Master
9 1 (3.03%) Senior Cloud Engineer
9 1 (3.03%) Senior DevOps Engineer
9 1 (3.03%) Senior JavaScript Developer
Libraries, Frameworks & Software Standards
1 29 (87.88%) React
2 26 (78.79%) Node.js
3 21 (63.64%) Redux
4 20 (60.61%) CSS
5 14 (42.42%) Sass
6 13 (39.39%) RESTful
7 11 (33.33%) HTML
8 10 (30.30%) Express
9 7 (21.21%) Chai
9 7 (21.21%) CSS3
9 7 (21.21%) HTML5
9 7 (21.21%) OAuth
9 7 (21.21%) OAuth2
9 7 (21.21%) RxJS
9 7 (21.21%) Web Services
10 6 (18.18%) OpenID
11 5 (15.15%) AngularJS
12 4 (12.12%) JMS
12 4 (12.12%) React Native
13 3 (9.09%) Fusebox
Miscellaneous
1 8 (24.24%) User Experience
2 4 (12.12%) Greenfield Project
2 4 (12.12%) Mobile App
2 4 (12.12%) Video on Demand
3 1 (3.03%) Fintech
Operating Systems
1 3 (9.09%) Linux
2 1 (3.03%) Android
Processes & Methodologies
1 21 (63.64%) TDD
2 19 (57.58%) Agile Software Development
3 18 (54.55%) BDD
4 9 (27.27%) Software Engineering
5 7 (21.21%) Unit Testing
6 6 (18.18%) Wireframes
7 5 (15.15%) Scrum
7 5 (15.15%) Test Automation
8 4 (12.12%) API Design
8 4 (12.12%) API Development
8 4 (12.12%) Continuous Integration
8 4 (12.12%) Customer-Centricity
8 4 (12.12%) DevOps
8 4 (12.12%) Machine Learning
8 4 (12.12%) Pair Programming
8 4 (12.12%) Web Development
9 3 (9.09%) Responsive Web Design
9 3 (9.09%) Wealth Management
10 2 (6.06%) Kanban
10 2 (6.06%) Open Source
Programming Languages
1 29 (87.88%) JavaScript
2 26 (78.79%) ES6
3 12 (36.36%) TypeScript
4 6 (18.18%) JSX
5 2 (6.06%) Java
6 1 (3.03%) ES8
6 1 (3.03%) Python
6 1 (3.03%) R
6 1 (3.03%) Scala
6 1 (3.03%) SQL
Qualifications
1 1 (3.03%) SC Cleared
1 1 (3.03%) Security Cleared
Quality Assurance & Compliance
1 5 (15.15%) QA
System Software
1 13 (39.39%) Docker
2 1 (3.03%) Virtual Machines
Systems Management
1 6 (18.18%) Ansible
2 3 (9.09%) Terraform
3 1 (3.03%) Kubernetes
Vendors
1 4 (12.12%) DevExpress
1 4 (12.12%) Google
2 1 (3.03%) Databricks