Period
to 26 May 2018

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for ES6 skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited ES6 over the 6 months to 26 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.

ECMAScript 2015 (JavaScript ES2015, ES6)
Central London > City of London
6 months to
26 May 2018
Same period 2017 Same period 2016
Rank 140 170 227
Rank change year-on-year +30 +57 -
Contract jobs citing ES6 119 67 11
As % of all contract IT jobs advertised in the City of London 1.71% 1.08% 0.17%
As % of the Programming Languages category 3.24% 2.15% 0.36%
Number of daily rates quoted 110 52 11
City of London median daily rate £550 £500 £500
Median daily rate % change year-on-year +10.00% - -
10th Percentile £425 £375 £375
90th Percentile £725 £625 £569
Central London median daily rate £525 £500 £450
% change year-on-year +5.00% +11.11% -
Number of hourly rates quoted 0 0 0
City of London median hourly rate - - -
Central London median hourly rate - - -

ES6 is in the Programming Languages 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 coding skills.

All Programming Languages
City of London
Contract vacancies with a requirement for coding skills 3,672 3,114 3,046
As % of all contract IT jobs advertised in the City of London 52.64% 50.16% 46.90%
Number of daily rates quoted 3,080 2,532 2,548
City of London median daily rate £525 £500 £475
Median daily rate % change year-on-year +5.00% +5.26% +5.56%
10th Percentile £363 £325 £313
90th Percentile £694 £650 £650
Central London median daily rate £513 £490 £463
% change year-on-year +4.59% +5.95% +2.78%
Number of hourly rates quoted 21 5 13
City of London median hourly rate £21.50 £28.35 £26.00
Median hourly rate % change year-on-year -24.15% +9.02% +9.47%
10th Percentile £12.75 £17.07 £18.50
90th Percentile £48.25 £40.80 £60.00
Central London median hourly rate £21.50 £28.35 £26.00
% change year-on-year -24.15% +9.02% +8.38%

ES6
Job Vacancy Trend in the City of London

Job postings citing ES6 as a percentage of all IT jobs advertised in the City of London.

Job vacancy trend for ES6 in the City of London

ES6
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 ES6 in the City of London.

Contractor daily rate trend for ES6 in the City of London

ES6
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing ES6 in the City of London over the 6 months to 26 May 2018.

Contractor daily rate histogram for ES6 in the City of London

For the 6 months to 26 May 2018, IT contractor jobs citing ES6 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 ES6.

1 111 (93.28%) JavaScript
2 90 (75.63%) CSS
3 81 (68.07%) HTML
4 69 (57.98%) React
5 66 (55.46%) HTML5
6 65 (54.62%) Agile Software Development
7 63 (52.94%) TDD
8 56 (47.06%) AngularJS
9 55 (46.22%) Node.js
10 46 (38.66%) BDD
11 45 (37.82%) Git (software)
12 42 (35.29%) Java
13 41 (34.45%) Docker
14 40 (33.61%) Redux
15 39 (32.77%) TypeScript
15 39 (32.77%) webpack
16 37 (31.09%) OAuth2
16 37 (31.09%) OAuth
17 36 (30.25%) Amazon AWS
18 35 (29.41%) HTTP
19 33 (27.73%) REST
19 33 (27.73%) Java 8
20 31 (26.05%) PostgreSQL
21 30 (25.21%) SOAP
22 29 (24.37%) Linux
22 29 (24.37%) CSS3
22 29 (24.37%) Heroku
22 29 (24.37%) MongoDB
23 28 (23.53%) GitLab
23 28 (23.53%) TCP/IP

ES6
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 9 (7.56%) Apache Spark
2 8 (6.72%) Apache
3 7 (5.88%) Elasticsearch
4 2 (1.68%) CMS
4 2 (1.68%) SharePoint
5 1 (0.84%) Apache Solr
5 1 (0.84%) Confluence
5 1 (0.84%) Tomcat
Cloud Services
1 36 (30.25%) Amazon AWS
2 29 (24.37%) Heroku
3 11 (9.24%) npm
3 11 (9.24%) Serverless
4 7 (5.88%) Yarn
5 3 (2.52%) Microsoft Azure
6 2 (1.68%) Google Cloud Platform
7 1 (0.84%) Amazon S3
7 1 (0.84%) Amazon SQS
7 1 (0.84%) GitHub
Communications & Networking
1 35 (29.41%) HTTP
2 28 (23.53%) DNS
2 28 (23.53%) FTP
2 28 (23.53%) SSL
2 28 (23.53%) TCP/IP
3 4 (3.36%) Internet
4 2 (1.68%) HTTPS
5 1 (0.84%) Kerberos
Database & Business Intelligence
1 31 (26.05%) PostgreSQL
2 29 (24.37%) MongoDB
3 10 (8.40%) NoSQL
3 10 (8.40%) Redis
4 7 (5.88%) SQL Server
5 3 (2.52%) Amazon DynamoDB
5 3 (2.52%) SQL Server 2014
6 2 (1.68%) LevelDB
7 1 (0.84%) Apache Hive
7 1 (0.84%) Big Data
7 1 (0.84%) Hadoop
7 1 (0.84%) HBase
7 1 (0.84%) MySQL
7 1 (0.84%) Power BI
7 1 (0.84%) Sqoop
Development Applications
1 45 (37.82%) Git (software)
2 39 (32.77%) webpack
3 28 (23.53%) GitLab
4 24 (20.17%) Babel
5 23 (19.33%) gulp
6 20 (16.81%) Gatling
6 20 (16.81%) Geb
6 20 (16.81%) Gradle
6 20 (16.81%) Spock
7 15 (12.61%) Mocha
8 10 (8.40%) Jasmine
9 8 (6.72%) Jenkins
10 7 (5.88%) Sinon.JS
11 5 (4.20%) Cucumber
11 5 (4.20%) JIRA
12 4 (3.36%) Protractor
13 3 (2.52%) Grunt
13 3 (2.52%) Maven
13 3 (2.52%) PostCSS
14 2 (1.68%) JUnit
General
1 25 (21.01%) Finance
2 23 (19.33%) Banking
3 9 (7.56%) Investment Banking
4 5 (4.20%) Retail Banking
5 4 (3.36%) Advertising
6 3 (2.52%) Retail
7 2 (1.68%) Front Office
7 2 (1.68%) Marketing
8 1 (0.84%) Publishing
8 1 (0.84%) Telecoms
Job Titles
1 109 (91.60%) Developer
2 42 (35.29%) React Developer
3 40 (33.61%) JavaScript Developer
4 25 (21.01%) Front End Developer (Client-Side Developer)
5 24 (20.17%) Java Developer
6 21 (17.65%) Full Stack Developer
7 20 (16.81%) Agile Developer
7 20 (16.81%) Agile Java Developer
8 14 (11.76%) Node.js Developer
9 11 (9.24%) Senior Developer
10 9 (7.56%) Front End Web Developer (Client-Side Developer)
10 9 (7.56%) Web Developer
11 8 (6.72%) Ruby Developer
11 8 (6.72%) Senior JavaScript Developer
12 7 (5.88%) Angular Developer
12 7 (5.88%) UI Developer
13 5 (4.20%) Senior React Developer
14 4 (3.36%) .NET Developer
14 4 (3.36%) ASP.NET Developer
14 4 (3.36%) Software Engineer
Libraries, Frameworks & Software Standards
1 90 (75.63%) CSS
2 81 (68.07%) HTML
3 69 (57.98%) React
4 66 (55.46%) HTML5
5 56 (47.06%) AngularJS
6 55 (46.22%) Node.js
7 40 (33.61%) Redux
8 37 (31.09%) OAuth
8 37 (31.09%) OAuth2
9 33 (27.73%) REST
10 30 (25.21%) SOAP
11 29 (24.37%) CSS3
12 23 (19.33%) Sass
13 21 (17.65%) Ember.js
14 20 (16.81%) Dropwizard
14 20 (16.81%) Guice
14 20 (16.81%) Ratpack
14 20 (16.81%) RESTful
14 20 (16.81%) WireMock
15 19 (15.97%) Kafka
Miscellaneous
1 18 (15.13%) Greenfield Project
2 17 (14.29%) Fintech
2 17 (14.29%) User Experience
3 9 (7.56%) Mobile App
4 8 (6.72%) Credit Risk
5 4 (3.36%) RIA
6 3 (2.52%) Foreign Exchange (FX)
7 2 (1.68%) Analytical Skills
8 1 (0.84%) Algorithms
8 1 (0.84%) Blog
8 1 (0.84%) Client/Server
8 1 (0.84%) Data Structures
8 1 (0.84%) Fixed Income
8 1 (0.84%) Marketing Technology
8 1 (0.84%) Over-the-Top Content
8 1 (0.84%) Podcast
8 1 (0.84%) Social Media
8 1 (0.84%) Social Network
8 1 (0.84%) Video on Demand
8 1 (0.84%) Video\Live Streaming
Operating Systems
1 29 (24.37%) Linux
2 1 (0.84%) Android
Processes & Methodologies
1 65 (54.62%) Agile Software Development
2 63 (52.94%) TDD
3 46 (38.66%) BDD
4 28 (23.53%) OWASP
5 27 (22.69%) Microservices
6 25 (21.01%) Software Engineering
7 21 (17.65%) Front End Development
8 20 (16.81%) Digital Transformation Programme
8 20 (16.81%) Domain-Driven Design
9 19 (15.97%) Web Development
10 14 (11.76%) Open Source
10 14 (11.76%) Unit Testing
11 10 (8.40%) Scrum
12 9 (7.56%) Test Automation
13 8 (6.72%) Functional Programming
13 8 (6.72%) Parallel Computing
13 8 (6.72%) Parallel Processing
13 8 (6.72%) Responsive Web Design
13 8 (6.72%) Wireframes
14 7 (5.88%) Continuous Integration
Programming Languages
1 111 (93.28%) JavaScript
2 42 (35.29%) Java
3 39 (32.77%) TypeScript
4 33 (27.73%) Java 8
5 17 (14.29%) Groovy
6 14 (11.76%) Scala
7 9 (7.56%) Ruby
8 7 (5.88%) C#
8 7 (5.88%) ES7
8 7 (5.88%) Python
9 6 (5.04%) JSX
10 3 (2.52%) SQL
11 2 (1.68%) Apple Swift
11 2 (1.68%) Bash Shell
11 2 (1.68%) ES8
11 2 (1.68%) Go
11 2 (1.68%) Objective-C
11 2 (1.68%) PHP
12 1 (0.84%) C++
12 1 (0.84%) Clojure
Qualifications
1 1 (0.84%) BPSS Clearance
1 1 (0.84%) Degree
Quality Assurance & Compliance
1 7 (5.88%) QA
2 2 (1.68%) WCAG
3 1 (0.84%) Data Quality
System Software
1 41 (34.45%) Docker
2 1 (0.84%) Apache ZooKeeper
2 1 (0.84%) HDFS
2 1 (0.84%) Varnish
Systems Management
1 20 (16.81%) Docker Swarm
2 8 (6.72%) Marathon
2 8 (6.72%) Mesos
3 3 (2.52%) Terraform
4 2 (1.68%) Ansible
5 1 (0.84%) Hadoop YARN
5 1 (0.84%) Oozie
5 1 (0.84%) Opscode Chef
Vendors
1 4 (3.36%) Cypress Semiconductor
1 4 (3.36%) DevExpress
2 3 (2.52%) FXall
2 3 (2.52%) Google
2 3 (2.52%) Reuters
3 2 (1.68%) Tableau
4 1 (0.84%) Zend