Period
to 21 August 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 21 August 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
21 Aug 2018
Same period 2017 Same period 2016
Rank 142 179 234
Rank change year-on-year +37 +55 +61
Contract jobs citing ES6 124 71 14
As % of all contract IT jobs advertised in the City of London 1.77% 1.07% 0.21%
As % of the Programming Languages category 3.31% 2.08% 0.43%
Number of daily rates quoted 114 58 14
City of London median daily rate £550 £500 £500
Median daily rate % change year-on-year +10.00% - -
10th Percentile £416 £394 £340
90th Percentile £713 £641 £573
Central London median daily rate £550 £500 £475
% change year-on-year +10.00% +5.26% -5.00%
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 3,751 3,413 3,268
As % of all contract IT jobs advertised in the City of London 53.46% 51.52% 48.34%
Number of daily rates quoted 3,120 2,733 2,751
City of London median daily rate £525 £513 £475
Median daily rate % change year-on-year +2.44% +7.89% +2.70%
10th Percentile £368 £358 £313
90th Percentile £694 £675 £638
Central London median daily rate £525 £500 £455
% change year-on-year +5.00% +9.89% +1.11%
Number of hourly rates quoted 16 12 11
City of London median hourly rate £21.50 £22.99 £19.00
Median hourly rate % change year-on-year -6.49% +21.01% -22.81%
10th Percentile £12.50 £13.31 £15.16
90th Percentile £50.48 £36.73 £55.00
Central London median hourly rate £21.50 £28.35 £19.00
% change year-on-year -24.15% +49.18% -24.00%

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 21 August 2018.

Contractor daily rate histogram for ES6 in the City of London

For the 6 months to 21 August 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.

1 113 (91.13%) JavaScript
2 94 (75.81%) CSS
3 87 (70.16%) HTML
4 68 (54.84%) React
5 62 (50.00%) HTML5
6 59 (47.58%) Agile Software Development
7 57 (45.97%) AngularJS
8 48 (38.71%) Git (software)
9 46 (37.10%) Node.js
10 44 (35.48%) Java
11 43 (34.68%) TDD
11 43 (34.68%) Docker
12 41 (33.06%) Redux
13 39 (31.45%) REST
14 38 (30.65%) OAuth2
14 38 (30.65%) HTTP
14 38 (30.65%) OAuth
15 37 (29.84%) Amazon AWS
16 35 (28.23%) Java 8
17 34 (27.42%) TypeScript
18 33 (26.61%) Microservices
18 33 (26.61%) SOAP
19 32 (25.81%) webpack
20 31 (25.00%) MongoDB
20 31 (25.00%) Linux
21 30 (24.19%) TCP/IP
21 30 (24.19%) DNS
21 30 (24.19%) SSL
21 30 (24.19%) FTP
21 30 (24.19%) OWASP

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 22 (17.74%) Apache Spark
2 18 (14.52%) Elasticsearch
3 10 (8.06%) Apache
4 4 (3.23%) CMS
5 3 (2.42%) SharePoint
6 1 (0.81%) Cloud Foundry
6 1 (0.81%) Confluence
6 1 (0.81%) Mule
6 1 (0.81%) Sitecore CMS
6 1 (0.81%) Tomcat
Applications
1 4 (3.23%) InVision
Cloud Services
1 37 (29.84%) Amazon AWS
2 30 (24.19%) Heroku
3 7 (5.65%) Serverless
4 6 (4.84%) npm
5 4 (3.23%) Adobe Creative Cloud
5 4 (3.23%) Microsoft Azure
6 2 (1.61%) SaaS
7 1 (0.81%) AWS CloudFormation
7 1 (0.81%) AWS CodePipeline
7 1 (0.81%) GitHub
7 1 (0.81%) Google Cloud Platform
7 1 (0.81%) IaaS
7 1 (0.81%) PaaS
7 1 (0.81%) Slack
Communications & Networking
1 38 (30.65%) HTTP
2 30 (24.19%) DNS
2 30 (24.19%) FTP
2 30 (24.19%) SSL
2 30 (24.19%) TCP/IP
3 5 (4.03%) Internet
4 1 (0.81%) HTTPS
Database & Business Intelligence
1 31 (25.00%) MongoDB
2 19 (15.32%) PostgreSQL
3 14 (11.29%) Big Data
4 12 (9.68%) Apache Cassandra
4 12 (9.68%) Hadoop
4 12 (9.68%) NoSQL
4 12 (9.68%) Redis
5 2 (1.61%) Amazon DynamoDB
5 2 (1.61%) MySQL
5 2 (1.61%) SQL Server
6 1 (0.81%) Blockchain
6 1 (0.81%) Power BI
Development Applications
1 48 (38.71%) Git (software)
2 32 (25.81%) webpack
3 30 (24.19%) GitLab
4 29 (23.39%) gulp
5 20 (16.13%) Babel
5 20 (16.13%) Gradle
6 12 (9.68%) Jasmine
7 9 (7.26%) Jenkins
8 8 (6.45%) Grunt
9 7 (5.65%) Gatling
9 7 (5.65%) Geb
9 7 (5.65%) Spock
10 6 (4.84%) JIRA
10 6 (4.84%) Mocha
11 4 (3.23%) TeamCity
12 2 (1.61%) PhantomJS
12 2 (1.61%) PostCSS
13 1 (0.81%) Bundler
13 1 (0.81%) SonarQube
13 1 (0.81%) Sonatype Nexus
General
1 20 (16.13%) Banking
2 19 (15.32%) Finance
3 9 (7.26%) Investment Banking
4 7 (5.65%) Advertising
5 3 (2.42%) Retail
6 2 (1.61%) Front Office
6 2 (1.61%) Games
6 2 (1.61%) Retail Banking
7 1 (0.81%) Law
7 1 (0.81%) Marketing
Job Titles
1 108 (87.10%) Developer
2 44 (35.48%) React Developer
3 29 (23.39%) Front End Developer (Client-Side Developer)
3 29 (23.39%) JavaScript Developer
4 23 (18.55%) Java Developer
5 19 (15.32%) Full Stack Developer
5 19 (15.32%) Senior Developer
6 13 (10.48%) Agile Developer
6 13 (10.48%) Agile Java Developer
7 12 (9.68%) Node.js Developer
8 11 (8.87%) Web Developer
9 10 (8.06%) Ruby Developer
9 10 (8.06%) UI Developer
10 9 (7.26%) Front End Web Developer (Client-Side Developer)
10 9 (7.26%) Lead Developer
10 9 (7.26%) Technical Leader
11 8 (6.45%) Lead Java Developer
11 8 (6.45%) Senior Java Developer
11 8 (6.45%) Technical Developer
12 7 (5.65%) Senior Front-End Developer
Libraries, Frameworks & Software Standards
1 94 (75.81%) CSS
2 87 (70.16%) HTML
3 68 (54.84%) React
4 62 (50.00%) HTML5
5 57 (45.97%) AngularJS
6 46 (37.10%) Node.js
7 41 (33.06%) Redux
8 39 (31.45%) REST
9 38 (30.65%) OAuth
9 38 (30.65%) OAuth2
10 33 (26.61%) SOAP
11 27 (21.77%) Sass
12 25 (20.16%) CSS3
13 24 (19.35%) Kafka
13 24 (19.35%) Spring
14 22 (17.74%) Spring Boot
15 21 (16.94%) Ember.js
16 20 (16.13%) Dropwizard
16 20 (16.13%) Guice
16 20 (16.13%) Ratpack
Miscellaneous
1 24 (19.35%) User Experience
2 17 (13.71%) Fintech
3 15 (12.10%) Greenfield Project
3 15 (12.10%) Mobile App
4 10 (8.06%) Credit Risk
5 4 (3.23%) Algorithms
5 4 (3.23%) Internet of Things
5 4 (3.23%) Virtual Team
5 4 (3.23%) W3C
6 3 (2.42%) Data Structures
6 3 (2.42%) Foreign Exchange (FX)
7 2 (1.61%) Analytical Skills
7 2 (1.61%) iPad
8 1 (0.81%) Cloud Native
8 1 (0.81%) Computer Science
8 1 (0.81%) Life Science
8 1 (0.81%) Marketing Technology
8 1 (0.81%) Media Streaming
8 1 (0.81%) Self-Motivation
8 1 (0.81%) Video\Live Streaming
Operating Systems
1 31 (25.00%) Linux
2 6 (4.84%) Apple iOS
3 5 (4.03%) Android
Processes & Methodologies
1 59 (47.58%) Agile Software Development
2 43 (34.68%) TDD
3 33 (26.61%) Microservices
4 30 (24.19%) OWASP
5 27 (21.77%) Front End Development
6 26 (20.97%) BDD
7 21 (16.94%) Scrum
8 20 (16.13%) Domain-Driven Design
9 17 (13.71%) Software Engineering
10 16 (12.90%) Web Development
11 14 (11.29%) Wireframes
12 13 (10.48%) Open Source
13 12 (9.68%) Continuous Integration
13 12 (9.68%) Functional Programming
14 10 (8.06%) Kanban
14 10 (8.06%) Parallel Computing
14 10 (8.06%) Parallel Processing
15 8 (6.45%) Responsive Web Design
16 7 (5.65%) Unit Testing
16 7 (5.65%) Visualisation
Programming Languages
1 113 (91.13%) JavaScript
2 44 (35.48%) Java
3 35 (28.23%) Java 8
4 34 (27.42%) TypeScript
5 10 (8.06%) ES7
5 10 (8.06%) Ruby
6 8 (6.45%) JSX
7 4 (3.23%) Groovy
7 4 (3.23%) Python
7 4 (3.23%) SQL
8 3 (2.42%) C#
9 2 (1.61%) Apple Swift
9 2 (1.61%) C++
9 2 (1.61%) Objective-C
9 2 (1.61%) PHP
10 1 (0.81%) Bash Shell
10 1 (0.81%) Scala
Qualifications
1 2 (1.61%) Degree
2 1 (0.81%) BPSS Clearance
Quality Assurance & Compliance
1 12 (9.68%) QA
2 5 (4.03%) WCAG
3 1 (0.81%) Data Quality
System Software
1 43 (34.68%) Docker
2 2 (1.61%) Varnish
3 1 (0.81%) Apache ZooKeeper
3 1 (0.81%) etcd
Systems Management
1 20 (16.13%) Docker Swarm
2 13 (10.48%) Kubernetes
3 10 (8.06%) Marathon
3 10 (8.06%) Mesos
4 2 (1.61%) Ansible
4 2 (1.61%) Puppet
4 2 (1.61%) Terraform
5 1 (0.81%) Consul
5 1 (0.81%) Opscode Chef
Vendors
1 4 (3.23%) Adobe
2 2 (1.61%) Atlassian
2 2 (1.61%) DevExpress
3 1 (0.81%) AppDynamics
3 1 (0.81%) Google
3 1 (0.81%) Sitecore
3 1 (0.81%) Splunk
3 1 (0.81%) Sybase
3 1 (0.81%) Tableau