Period
to 16 January 2019

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 16 January 2019 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
16 Jan 2019
Same period 2018 Same period 2017
Rank 146 137 176
Rank change year-on-year -9 +39 +49
Contract jobs citing ES6 112 117 50
As % of all contract IT jobs advertised in the City of London 1.65% 1.66% 0.81%
As % of the Programming Languages category 3.05% 3.12% 1.58%
Number of daily rates quoted 102 108 42
City of London median daily rate £550 £550 £500
Median daily rate % change year-on-year - +10.00% -
10th Percentile £425 £413 £390
90th Percentile £699 £638 £604
Central London median daily rate £550 £525 £500
% change year-on-year +4.76% +5.00% +11.05%
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 3,676 3,749 3,164
As % of all contract IT jobs advertised in the City of London 54.06% 53.12% 50.99%
Number of daily rates quoted 3,041 3,162 2,652
City of London median daily rate £525 £525 £475
Median daily rate % change year-on-year - +10.53% -
10th Percentile £385 £363 £325
90th Percentile £675 £688 £663
Central London median daily rate £525 £513 £475
% change year-on-year +2.44% +7.89% -
Number of hourly rates quoted 7 8 10
City of London median hourly rate £37.09 £27.55 £27.50
Median hourly rate % change year-on-year +34.65% +0.16% -7.78%
10th Percentile £18.35 £20.30 £16.06
90th Percentile £85.21 £54.03 £55.19
Central London median hourly rate £37.09 £28.00 £27.50
% change year-on-year +32.46% +1.82% -7.78%

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 16 January 2019.

Contractor daily rate histogram for ES6 in the City of London

For the 6 months to 16 January 2019, 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 (93.75%) JavaScript
2 84 (75.00%) CSS
2 84 (75.00%) HTML
3 58 (51.79%) Agile Software Development
4 53 (47.32%) React
5 48 (42.86%) TypeScript
5 48 (42.86%) Amazon AWS
6 46 (41.07%) Git (software)
7 44 (39.29%) Microservices
8 43 (38.39%) Node.js
9 42 (37.50%) AngularJS
9 42 (37.50%) Java
10 41 (36.61%) TDD
11 39 (34.82%) HTML5
12 38 (33.93%) Docker
13 37 (33.04%) gulp
14 34 (30.36%) Software Engineering
15 32 (28.57%) OAuth
15 32 (28.57%) Front End Development
16 31 (27.68%) REST
17 30 (26.79%) Heroku
17 30 (26.79%) OAuth2
17 30 (26.79%) Spring Boot
17 30 (26.79%) Spring
17 30 (26.79%) Java 8
18 28 (25.00%) Redux
18 28 (25.00%) HTTP
18 28 (25.00%) User Experience
18 28 (25.00%) BDD
18 28 (25.00%) MongoDB

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 23 (20.54%) Elasticsearch
2 14 (12.50%) Apache Spark
3 11 (9.82%) Gunicorn
4 4 (3.57%) Confluence
5 2 (1.79%) CMS
5 2 (1.79%) SharePoint
5 2 (1.79%) Sitecore CMS
6 1 (0.89%) Apache Solr
6 1 (0.89%) Cloud Foundry
6 1 (0.89%) Mule
6 1 (0.89%) Tomcat
Applications
1 1 (0.89%) InVision
Cloud Services
1 48 (42.86%) Amazon AWS
2 30 (26.79%) Heroku
3 18 (16.07%) Serverless
4 9 (8.04%) AWS Lambda
4 9 (8.04%) Microsoft Azure
5 4 (3.57%) Amazon S3
5 4 (3.57%) Google Cloud Platform
6 3 (2.68%) Amazon EC2
6 3 (2.68%) AWS CloudFormation
6 3 (2.68%) Azure Functions
6 3 (2.68%) CloudFront
6 3 (2.68%) GitHub
7 2 (1.79%) Amazon CloudWatch
7 2 (1.79%) Amazon ELB
7 2 (1.79%) Amazon Kinesis
7 2 (1.79%) Amazon SQS
7 2 (1.79%) AWS CloudTrail
7 2 (1.79%) npm
7 2 (1.79%) Virtual Private Cloud
7 2 (1.79%) Yarn
Communications & Networking
1 28 (25.00%) HTTP
2 24 (21.43%) DNS
2 24 (21.43%) FTP
2 24 (21.43%) SSL
2 24 (21.43%) TCP/IP
3 5 (4.46%) Internet
Database & Business Intelligence
1 28 (25.00%) MongoDB
2 24 (21.43%) Big Data
3 18 (16.07%) PostgreSQL
4 14 (12.50%) Apache Cassandra
4 14 (12.50%) Hadoop
5 8 (7.14%) Blockchain
5 8 (7.14%) MySQL
5 8 (7.14%) Redis
6 3 (2.68%) Amazon RDS
7 2 (1.79%) Amazon DynamoDB
7 2 (1.79%) NoSQL
7 2 (1.79%) Relational Database
8 1 (0.89%) Amazon Aurora
8 1 (0.89%) BigQuery
8 1 (0.89%) Cosmos DB
8 1 (0.89%) Couchbase
8 1 (0.89%) SQL Server
Development Applications
1 46 (41.07%) Git (software)
2 37 (33.04%) gulp
3 24 (21.43%) GitLab
3 24 (21.43%) Gradle
4 23 (20.54%) webpack
5 21 (18.75%) Gatling
6 16 (14.29%) Selenium
7 14 (12.50%) Babel
8 13 (11.61%) Jasmine
9 11 (9.82%) Mocha
9 11 (9.82%) Robot Framework
10 10 (8.93%) Jenkins
11 9 (8.04%) Geb
11 9 (8.04%) Spock
12 6 (5.36%) Grunt
13 5 (4.46%) JIRA
14 4 (3.57%) TeamCity
15 3 (2.68%) Cucumber
15 3 (2.68%) Maven
15 3 (2.68%) PostCSS
General
1 13 (11.61%) Finance
2 7 (6.25%) Banking
3 5 (4.46%) Advertising
4 3 (2.68%) Publishing
4 3 (2.68%) Retail
5 1 (0.89%) Digital Economy
5 1 (0.89%) Front Office
5 1 (0.89%) Law
5 1 (0.89%) Marketing
Job Titles
1 85 (75.89%) Developer
2 25 (22.32%) Front End Developer (Client-Side Developer)
2 25 (22.32%) Java Developer
3 24 (21.43%) Senior Developer
4 23 (20.54%) React Developer
5 19 (16.96%) JavaScript Developer
6 13 (11.61%) Agile Developer
6 13 (11.61%) Technical Leader
7 12 (10.71%) Lead Developer
8 11 (9.82%) Agile Java Developer
9 10 (8.93%) Lead Java Developer
9 10 (8.93%) Senior Java Developer
9 10 (8.93%) Technical Developer
10 9 (8.04%) Full Stack Developer
11 8 (7.14%) Python Developer
11 8 (7.14%) UI Developer
12 7 (6.25%) Software Engineer
13 5 (4.46%) Senior Front-End Developer
13 5 (4.46%) Software Manager
14 4 (3.57%) Mobile Engineer
Libraries, Frameworks & Software Standards
1 84 (75.00%) CSS
1 84 (75.00%) HTML
2 53 (47.32%) React
3 43 (38.39%) Node.js
4 42 (37.50%) AngularJS
5 39 (34.82%) HTML5
6 32 (28.57%) OAuth
7 31 (27.68%) REST
8 30 (26.79%) OAuth2
8 30 (26.79%) Spring
8 30 (26.79%) Spring Boot
9 28 (25.00%) Redux
10 25 (22.32%) Ember.js
10 25 (22.32%) Jest
10 25 (22.32%) Sass
10 25 (22.32%) SOAP
11 24 (21.43%) Dropwizard
11 24 (21.43%) Guice
11 24 (21.43%) Ratpack
12 20 (17.86%) Enzyme
Miscellaneous
1 28 (25.00%) User Experience
2 8 (7.14%) Greenfield Project
2 8 (7.14%) Mobile App
3 4 (3.57%) Analytical Skills
3 4 (3.57%) Internet of Things
3 4 (3.57%) Virtual Team
4 3 (2.68%) Algorithms
4 3 (2.68%) Data Structures
5 2 (1.79%) Analytical Mindset
5 2 (1.79%) Derivative
5 2 (1.79%) Fintech
6 1 (0.89%) Blog
6 1 (0.89%) Foreign Exchange (FX)
6 1 (0.89%) iPad
6 1 (0.89%) Life Science
6 1 (0.89%) RIA
6 1 (0.89%) Self-Motivation
6 1 (0.89%) W3C
Operating Systems
1 26 (23.21%) Linux
2 6 (5.36%) Android
2 6 (5.36%) Apple iOS
Processes & Methodologies
1 58 (51.79%) Agile Software Development
2 44 (39.29%) Microservices
3 41 (36.61%) TDD
4 34 (30.36%) Software Engineering
5 32 (28.57%) Front End Development
6 28 (25.00%) BDD
7 24 (21.43%) Domain-Driven Design
7 24 (21.43%) OWASP
8 16 (14.29%) Test Automation
9 15 (13.39%) Scrum
10 12 (10.71%) Wireframes
11 11 (9.82%) Continuous Integration
12 10 (8.93%) Unit Testing
13 9 (8.04%) Collaborative Working
13 9 (8.04%) Continuous Delivery
13 9 (8.04%) Decision-Making
13 9 (8.04%) Digital Transformation Programme
14 6 (5.36%) DevOps
14 6 (5.36%) Kanban
14 6 (5.36%) OO
Programming Languages
1 105 (93.75%) JavaScript
2 48 (42.86%) TypeScript
3 42 (37.50%) Java
4 30 (26.79%) Java 8
5 20 (17.86%) Python
6 17 (15.18%) ES7
7 7 (6.25%) JSX
8 4 (3.57%) C#
8 4 (3.57%) Go
9 2 (1.79%) C++
9 2 (1.79%) SQL
10 1 (0.89%) Ruby
10 1 (0.89%) Scala
Qualifications
1 3 (2.68%) Degree
2 1 (0.89%) BPSS Clearance
Quality Assurance & Compliance
1 5 (4.46%) QA
2 1 (0.89%) WCAG
System Software
1 38 (33.93%) Docker
2 2 (1.79%) Varnish
3 1 (0.89%) Apache ZooKeeper
3 1 (0.89%) etcd
Systems Management
1 24 (21.43%) Docker Swarm
2 15 (13.39%) Kubernetes
3 7 (6.25%) Terraform
4 4 (3.57%) Ansible
5 3 (2.68%) Marathon
5 3 (2.68%) Mesos
6 1 (0.89%) Consul
Vendors
1 3 (2.68%) Google
1 3 (2.68%) Splunk
2 2 (1.79%) Sitecore
3 1 (0.89%) Adobe
3 1 (0.89%) AppDynamics
3 1 (0.89%) Oracle
3 1 (0.89%) PubNub