Period
to 25 August 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 25 August 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
25 Aug 2019
Same period 2018 Same period 2017
Rank 153 141 174
Rank change year-on-year -12 +33 +55
Contract jobs citing ES6 99 124 76
As % of all contract IT jobs advertised in the City of London 1.56% 1.76% 1.13%
As % of the Programming Languages category 3.15% 3.30% 2.20%
Number of daily rates quoted 75 114 63
City of London median daily rate £525 £550 £500
Median daily rate % change year-on-year -4.55% +10.00% -
10th Percentile £425 £416 £394
90th Percentile £675 £713 £648
Central London median daily rate £525 £550 £500
% change year-on-year -4.55% +10.00% +5.26%
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 3,141 3,760 3,450
As % of all contract IT jobs advertised in the City of London 49.56% 53.42% 51.35%
Number of daily rates quoted 2,545 3,125 2,769
City of London median daily rate £525 £525 £513
Median daily rate % change year-on-year - +2.44% +7.89%
10th Percentile £405 £368 £360
90th Percentile £675 £688 £675
Central London median daily rate £525 £525 £500
% change year-on-year - +5.00% +9.89%
Number of hourly rates quoted 24 16 12
City of London median hourly rate £35.00 £21.75 £22.99
Median hourly rate % change year-on-year +60.92% -5.40% +21.01%
10th Percentile £21.00 £12.50 £13.31
90th Percentile £56.50 £50.48 £36.73
Central London median hourly rate £35.00 £21.75 £28.35
% change year-on-year +60.92% -23.27% +49.18%

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 25 August 2019.

Contractor daily rate histogram for ES6 in the City of London

ES6
Contract Job Locations in the City of London

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing ES6 within the City of London region over the 6 months to 25 August 2019. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 6 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Past 6 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Moorgate - 13 £500 -
London Bridge - 2 £575 -
ES6
Central London

For the 6 months to 25 August 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 69 (69.70%) JavaScript
2 58 (58.59%) CSS
3 51 (51.52%) HTML
4 50 (50.51%) TypeScript
5 46 (46.46%) Redux
6 44 (44.44%) Agile Software Development
7 43 (43.43%) React
8 40 (40.40%) Docker
9 39 (39.39%) Node.js
10 36 (36.36%) TDD
10 36 (36.36%) AWS
11 34 (34.34%) Microservices
11 34 (34.34%) Front End Development
12 33 (33.33%) HTML5
13 32 (32.32%) AngularJS
14 31 (31.31%) Finance
14 31 (31.31%) Java
15 30 (30.30%) Git (software)
16 26 (26.26%) CSS3
16 26 (26.26%) webpack
17 25 (25.25%) Sass
18 23 (23.23%) Azure
18 23 (23.23%) Serverless
19 22 (22.22%) Express
20 20 (20.20%) koa
20 20 (20.20%) AWS Lambda
21 19 (19.19%) Kubernetes
21 19 (19.19%) Jest
22 18 (18.18%) REST
23 17 (17.17%) PostgreSQL

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 8 (8.08%) Elasticsearch
1 8 (8.08%) Magnolia
2 5 (5.05%) Confluence
3 3 (3.03%) CMS
4 2 (2.02%) ArcGIS
Cloud Services
1 36 (36.36%) AWS
2 23 (23.23%) Azure
2 23 (23.23%) Serverless
3 20 (20.20%) AWS Lambda
4 8 (8.08%) npm
5 7 (7.07%) GCP
6 6 (6.06%) Amazon SQS
7 5 (5.05%) GitHub
8 4 (4.04%) Yarn
9 1 (1.01%) Amazon S3
9 1 (1.01%) AWS CloudFormation
9 1 (1.01%) Google Analytics
9 1 (1.01%) Heroku
Communications & Networking
1 8 (8.08%) HTTP
2 6 (6.06%) DNS
2 6 (6.06%) FTP
2 6 (6.06%) SSL
2 6 (6.06%) TCP/IP
Database & Business Intelligence
1 17 (17.17%) PostgreSQL
2 15 (15.15%) MongoDB
3 14 (14.14%) MySQL
4 7 (7.07%) Couchbase
4 7 (7.07%) Relational Database
5 5 (5.05%) Big Data
5 5 (5.05%) Blockchain
5 5 (5.05%) Redis
6 4 (4.04%) NoSQL
6 4 (4.04%) SQL Server
7 1 (1.01%) Geospatial Data
7 1 (1.01%) Spatial Data
7 1 (1.01%) SQL Server 2014
Development Applications
1 30 (30.30%) Git (software)
2 26 (26.26%) webpack
3 13 (13.13%) Gatling
3 13 (13.13%) gulp
4 12 (12.12%) Selenium
5 11 (11.11%) Babel
5 11 (11.11%) Jenkins
5 11 (11.11%) Mocha
6 10 (10.10%) Gradle
6 10 (10.10%) Jasmine
7 7 (7.07%) Atlassian Bamboo
7 7 (7.07%) Maven
8 6 (6.06%) Bitbucket
8 6 (6.06%) Cucumber
8 6 (6.06%) Geb
8 6 (6.06%) GitLab
8 6 (6.06%) JIRA
8 6 (6.06%) Karma Test Runner
8 6 (6.06%) Spock
9 5 (5.05%) Protractor
General
1 31 (31.31%) Finance
2 12 (12.12%) Retail
3 10 (10.10%) Banking
4 7 (7.07%) Front Office
5 5 (5.05%) Public Sector
6 4 (4.04%) Games
7 1 (1.01%) International Banking
7 1 (1.01%) Investment Banking
7 1 (1.01%) Pharmaceutical
7 1 (1.01%) Publishing
Job Titles
1 81 (81.82%) Developer
2 33 (33.33%) Front End Developer (Client-Side Developer)
3 31 (31.31%) React Developer
4 20 (20.20%) Senior Developer
5 19 (19.19%) JavaScript Developer
6 16 (16.16%) Java Developer
7 15 (15.15%) Full Stack Developer
8 12 (12.12%) Angular Developer
9 8 (8.08%) Senior React Developer
10 6 (6.06%) Senior Full Stack Developer
11 4 (4.04%) .NET Developer
11 4 (4.04%) JavaScript Engineer
11 4 (4.04%) Lead Developer
11 4 (4.04%) Senior Java Developer
11 4 (4.04%) Senior UI Developer
11 4 (4.04%) UI Developer
11 4 (4.04%) Web Developer
12 3 (3.03%) C# Developer
12 3 (3.03%) Senior Front-End Developer
12 3 (3.03%) Senior Web Developer
Libraries, Frameworks & Software Standards
1 58 (58.59%) CSS
2 51 (51.52%) HTML
3 46 (46.46%) Redux
4 43 (43.43%) React
5 39 (39.39%) Node.js
6 33 (33.33%) HTML5
7 32 (32.32%) AngularJS
8 26 (26.26%) CSS3
9 25 (25.25%) Sass
10 22 (22.22%) Express
11 20 (20.20%) koa
12 19 (19.19%) Jest
13 18 (18.18%) REST
14 16 (16.16%) Spring
15 14 (14.14%) Spring Boot
16 13 (13.13%) RESTful
17 10 (10.10%) Enzyme
17 10 (10.10%) Kafka
17 10 (10.10%) RxJS
18 9 (9.09%) OAuth2
Miscellaneous
1 9 (9.09%) User Experience
2 8 (8.08%) Mobile App
3 6 (6.06%) Data Protection Act
4 3 (3.03%) Blog
4 3 (3.03%) Derivative
4 3 (3.03%) Equity Derivative
4 3 (3.03%) Foreign Exchange (FX)
4 3 (3.03%) Greenfield Project
4 3 (3.03%) Market Risk
5 2 (2.02%) Data Structures
6 1 (1.01%) Algorithms
6 1 (1.01%) Equities
6 1 (1.01%) Fixed Income
6 1 (1.01%) NHS
6 1 (1.01%) Self-Motivation
Operating Systems
1 8 (8.08%) Linux
2 1 (1.01%) Unix
Processes & Methodologies
1 44 (44.44%) Agile Software Development
2 36 (36.36%) TDD
3 34 (34.34%) Front End Development
3 34 (34.34%) Microservices
4 14 (14.14%) BDD
4 14 (14.14%) OOP
5 12 (12.12%) SDLC
5 12 (12.12%) Software Engineering
6 11 (11.11%) DevOps
7 10 (10.10%) Unit Testing
8 9 (9.09%) Scrum
8 9 (9.09%) SOA
9 7 (7.07%) Fintech
9 7 (7.07%) Pair Programming
9 7 (7.07%) Software Delivery
9 7 (7.07%) Technical Debt
10 6 (6.06%) Data Protection
10 6 (6.06%) Domain-Driven Design
10 6 (6.06%) OO
10 6 (6.06%) OWASP
Programming Languages
1 69 (69.70%) JavaScript
2 50 (50.51%) TypeScript
3 31 (31.31%) Java
4 16 (16.16%) Java 8
5 11 (11.11%) Python
6 9 (9.09%) SQL
7 8 (8.08%) ES7
7 8 (8.08%) Go
8 6 (6.06%) C#
9 3 (3.03%) JSX
10 2 (2.02%) ANSI SQL
10 2 (2.02%) Java 9
11 1 (1.01%) C++
11 1 (1.01%) Ruby
Qualifications
1 4 (4.04%) Computer Science Degree
1 4 (4.04%) Degree
2 1 (1.01%) BPSS Clearance
Quality Assurance & Compliance
1 1 (1.01%) QA
System Software
1 40 (40.40%) Docker
Systems Management
1 19 (19.19%) Kubernetes
2 13 (13.13%) Terraform
3 7 (7.07%) Ansible
4 6 (6.06%) Docker Swarm
5 2 (2.02%) Marathon
5 2 (2.02%) Mesos
Vendors
1 6 (6.06%) Atlassian
1 6 (6.06%) Google
2 2 (2.02%) ESRI
3 1 (1.01%) Cypress Semiconductor
3 1 (1.01%) Facebook
3 1 (1.01%) Microsoft
3 1 (1.01%) Sitecore
3 1 (1.01%) Twitter