Period
to 20 October 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 20 October 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
20 Oct 2018
Same period 2017 Same period 2016
Rank 143 152 208
Rank change year-on-year +9 +56 +66
Contract jobs citing ES6 114 95 31
As % of all contract IT jobs advertised in the City of London 1.64% 1.39% 0.47%
As % of the Programming Languages category 3.04% 2.66% 0.93%
Number of daily rates quoted 104 80 29
City of London median daily rate £550 £500 £500
Median daily rate % change year-on-year +10.00% - -
10th Percentile £429 £406 £380
90th Percentile £675 £638 £578
Central London median daily rate £550 £500 £500
% change year-on-year +10.00% - -
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 3,746 3,570 3,325
As % of all contract IT jobs advertised in the City of London 54.05% 52.06% 49.98%
Number of daily rates quoted 3,112 2,913 2,799
City of London median daily rate £525 £525 £475
Median daily rate % change year-on-year - +10.53% -
10th Percentile £375 £363 £319
90th Percentile £688 £675 £650
Central London median daily rate £525 £501 £470
% change year-on-year +4.90% +6.49% +1.62%
Number of hourly rates quoted 11 11 11
City of London median hourly rate £37.09 £21.50 £27.50
Median hourly rate % change year-on-year +72.51% -21.82% +15.79%
10th Percentile £12.50 £13.30 £16.63
90th Percentile £62.50 £30.00 £56.87
Central London median hourly rate £29.55 £21.50 £27.50
% change year-on-year +37.42% -21.82% +15.79%

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 20 October 2018.

Contractor daily rate histogram for ES6 in the City of London

For the 6 months to 20 October 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.

1 105 (92.11%) JavaScript
2 80 (70.18%) CSS
3 78 (68.42%) HTML
4 59 (51.75%) Agile Software Development
5 58 (50.88%) AngularJS
6 54 (47.37%) React
7 47 (41.23%) HTML5
7 47 (41.23%) Git (software)
8 43 (37.72%) TDD
9 42 (36.84%) TypeScript
10 41 (35.96%) Docker
10 41 (35.96%) Java
11 37 (32.46%) REST
12 35 (30.70%) Amazon AWS
12 35 (30.70%) Microservices
13 34 (29.82%) Node.js
14 33 (28.95%) Redux
15 32 (28.07%) Java 8
15 32 (28.07%) gulp
16 31 (27.19%) Front End Development
17 30 (26.32%) OAuth2
17 30 (26.32%) HTTP
17 30 (26.32%) OAuth
18 29 (25.44%) SOAP
18 29 (25.44%) Heroku
19 27 (23.68%) MongoDB
19 27 (23.68%) Linux
19 27 (23.68%) Spring
20 26 (22.81%) OWASP
20 26 (22.81%) 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 20 (17.54%) Elasticsearch
2 17 (14.91%) Apache Spark
3 5 (4.39%) Apache
4 3 (2.63%) CMS
4 3 (2.63%) Gunicorn
4 3 (2.63%) SharePoint
5 1 (0.88%) Cloud Foundry
5 1 (0.88%) Confluence
5 1 (0.88%) Mule
5 1 (0.88%) Sitecore CMS
5 1 (0.88%) Tomcat
Applications
1 4 (3.51%) InVision
Cloud Services
1 35 (30.70%) Amazon AWS
2 29 (25.44%) Heroku
3 7 (6.14%) Microsoft Azure
4 5 (4.39%) npm
4 5 (4.39%) Serverless
5 4 (3.51%) Adobe Creative Cloud
6 2 (1.75%) AWS CloudFormation
6 2 (1.75%) GitHub
6 2 (1.75%) Google Cloud Platform
6 2 (1.75%) SaaS
6 2 (1.75%) Yarn
7 1 (0.88%) Amazon CloudWatch
7 1 (0.88%) Amazon ELB
7 1 (0.88%) Amazon Kinesis
7 1 (0.88%) Amazon SQS
7 1 (0.88%) AWS CloudTrail
7 1 (0.88%) CloudFront
7 1 (0.88%) IaaS
7 1 (0.88%) PaaS
7 1 (0.88%) Virtual Private Cloud
Communications & Networking
1 30 (26.32%) HTTP
2 26 (22.81%) DNS
2 26 (22.81%) FTP
2 26 (22.81%) SSL
2 26 (22.81%) TCP/IP
3 6 (5.26%) Internet
Database & Business Intelligence
1 27 (23.68%) MongoDB
2 15 (13.16%) PostgreSQL
3 14 (12.28%) Big Data
4 12 (10.53%) Apache Cassandra
4 12 (10.53%) Hadoop
5 8 (7.02%) NoSQL
5 8 (7.02%) Redis
6 3 (2.63%) MySQL
7 2 (1.75%) Amazon DynamoDB
8 1 (0.88%) Amazon RDS
8 1 (0.88%) Blockchain
8 1 (0.88%) Cosmos DB
8 1 (0.88%) Relational Database
Development Applications
1 47 (41.23%) Git (software)
2 32 (28.07%) gulp
3 26 (22.81%) GitLab
4 23 (20.18%) webpack
5 21 (18.42%) Gradle
6 15 (13.16%) Babel
7 13 (11.40%) Jenkins
8 11 (9.65%) Gatling
9 9 (7.89%) Jasmine
10 8 (7.02%) Geb
10 8 (7.02%) Spock
11 7 (6.14%) Grunt
11 7 (6.14%) Mocha
12 6 (5.26%) JIRA
13 4 (3.51%) Selenium
13 4 (3.51%) TeamCity
14 3 (2.63%) Maven
14 3 (2.63%) Robot Framework
15 2 (1.75%) PostCSS
16 1 (0.88%) CircleCI
General
1 20 (17.54%) Finance
2 9 (7.89%) Banking
3 7 (6.14%) Advertising
4 2 (1.75%) Front Office
4 2 (1.75%) Games
4 2 (1.75%) Marketing
4 2 (1.75%) Retail
5 1 (0.88%) Digital Economy
5 1 (0.88%) Law
5 1 (0.88%) Retail Banking
Job Titles
1 98 (85.96%) Developer
2 33 (28.95%) React Developer
3 25 (21.93%) Front End Developer (Client-Side Developer)
3 25 (21.93%) Java Developer
4 23 (20.18%) JavaScript Developer
4 23 (20.18%) Senior Developer
5 14 (12.28%) Agile Developer
5 14 (12.28%) Agile Java Developer
5 14 (12.28%) Full Stack Developer
6 11 (9.65%) Lead Developer
7 9 (7.89%) Technical Leader
7 9 (7.89%) UI Developer
8 8 (7.02%) Lead Java Developer
8 8 (7.02%) Senior Front-End Developer
8 8 (7.02%) Senior Java Developer
8 8 (7.02%) Technical Developer
9 7 (6.14%) Node.js Developer
9 7 (6.14%) Senior React Developer
10 5 (4.39%) Angular Developer
10 5 (4.39%) Senior JavaScript Developer
Libraries, Frameworks & Software Standards
1 80 (70.18%) CSS
2 78 (68.42%) HTML
3 58 (50.88%) AngularJS
4 54 (47.37%) React
5 47 (41.23%) HTML5
6 37 (32.46%) REST
7 34 (29.82%) Node.js
8 33 (28.95%) Redux
9 30 (26.32%) OAuth
9 30 (26.32%) OAuth2
10 29 (25.44%) SOAP
11 27 (23.68%) Spring
12 25 (21.93%) Spring Boot
13 24 (21.05%) Sass
14 21 (18.42%) Dropwizard
14 21 (18.42%) Ember.js
14 21 (18.42%) Guice
14 21 (18.42%) Ratpack
15 19 (16.67%) JSON
16 18 (15.79%) RESTful
Miscellaneous
1 21 (18.42%) User Experience
2 13 (11.40%) Greenfield Project
2 13 (11.40%) Mobile App
3 10 (8.77%) Fintech
4 5 (4.39%) Analytical Skills
4 5 (4.39%) Credit Risk
5 4 (3.51%) Internet of Things
5 4 (3.51%) Virtual Team
5 4 (3.51%) W3C
6 3 (2.63%) Algorithms
6 3 (2.63%) Foreign Exchange (FX)
7 2 (1.75%) Analytical Mindset
7 2 (1.75%) Data Structures
7 2 (1.75%) Derivative
7 2 (1.75%) iPad
7 2 (1.75%) RIA
8 1 (0.88%) Cloud Native
8 1 (0.88%) Marketing Technology
8 1 (0.88%) Self-Motivation
8 1 (0.88%) Social Media
Operating Systems
1 27 (23.68%) Linux
2 8 (7.02%) Apple iOS
3 7 (6.14%) Android
Processes & Methodologies
1 59 (51.75%) Agile Software Development
2 43 (37.72%) TDD
3 35 (30.70%) Microservices
4 31 (27.19%) Front End Development
5 26 (22.81%) BDD
5 26 (22.81%) OWASP
6 22 (19.30%) Software Engineering
7 21 (18.42%) Domain-Driven Design
8 20 (17.54%) Scrum
9 14 (12.28%) Continuous Integration
10 12 (10.53%) Unit Testing
11 10 (8.77%) Kanban
11 10 (8.77%) Test Automation
11 10 (8.77%) Wireframes
12 8 (7.02%) Digital Transformation Programme
13 7 (6.14%) Functional Programming
13 7 (6.14%) OO
13 7 (6.14%) Problem-Solving
13 7 (6.14%) Web Development
14 6 (5.26%) DevOps
Programming Languages
1 105 (92.11%) JavaScript
2 42 (36.84%) TypeScript
3 41 (35.96%) Java
4 32 (28.07%) Java 8
5 9 (7.89%) ES7
5 9 (7.89%) Python
6 5 (4.39%) Ruby
7 4 (3.51%) JSX
8 3 (2.63%) C#
8 3 (2.63%) SQL
9 2 (1.75%) C++
9 2 (1.75%) PHP
10 1 (0.88%) Apple Swift
10 1 (0.88%) Bash Shell
10 1 (0.88%) Objective-C
Qualifications
1 2 (1.75%) BPSS Clearance
2 1 (0.88%) Degree
Quality Assurance & Compliance
1 9 (7.89%) QA
2 4 (3.51%) WCAG
3 1 (0.88%) Data Quality
System Software
1 41 (35.96%) Docker
2 2 (1.75%) Varnish
3 1 (0.88%) Apache ZooKeeper
3 1 (0.88%) etcd
Systems Management
1 21 (18.42%) Docker Swarm
2 13 (11.40%) Kubernetes
3 5 (4.39%) Marathon
3 5 (4.39%) Mesos
4 4 (3.51%) Ansible
4 4 (3.51%) Terraform
5 2 (1.75%) Puppet
6 1 (0.88%) Consul
Vendors
1 4 (3.51%) Adobe
2 2 (1.75%) Atlassian
2 2 (1.75%) Google
3 1 (0.88%) AppDynamics
3 1 (0.88%) DevExpress
3 1 (0.88%) PubNub
3 1 (0.88%) Sitecore
3 1 (0.88%) Splunk
3 1 (0.88%) Sybase