Period
to 29 July 2021

The following table provides summary statistics for contract job vacancies advertised in the City of London with a requirement for JavaScript skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited JavaScript over the 6 months to 29 July 2021 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.

JavaScript (including ECMAScript)
Central London > City of London
6 months to
29 Jul 2021
Same period 2020 Same period 2019
Rank 18 15 9
Rank change year-on-year -3 -6 0
Contract jobs citing JavaScript 290 215 818
As % of all contract jobs advertised in the City of London 8.46% 9.11% 12.47%
As % of the Programming Languages category 18.23% 18.13% 24.89%
Number of daily rates quoted 214 152 680
10th Percentile £363 £363 £400
25th Percentile £425 £425 £438
Median daily rate (50th Percentile) £521 £511 £500
Median % change year-on-year +1.96% +2.25% -
75th Percentile £623 £575 £575
90th Percentile £700 £650 £638
Central London median daily rate £513 £514 £500
% change year-on-year -0.24% +2.75% -
Number of hourly rates quoted 4 3 7
10th Percentile £35.08 £33.80 £23.60
25th Percentile £35.19 £35.38 £32.50
Median hourly rate £36.50 £39.00 £35.00
Median % change year-on-year -6.41% +11.43% -36.36%
75th Percentile £45.81 £48.75 £47.00
90th Percentile £60.33 £54.00 £56.50
Central London median hourly rate £36.50 £39.00 £35.00
% change year-on-year -6.41% +11.43% -36.36%

JavaScript 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 1,591 1,186 3,286
As % of all contract IT jobs advertised in the City of London 46.43% 50.25% 50.08%
Number of daily rates quoted 1,220 921 2,672
10th Percentile £406 £375 £406
25th Percentile £470 £450 £463
Median daily rate (50th Percentile) £585 £525 £525
Median % change year-on-year +11.38% - -
75th Percentile £675 £625 £613
90th Percentile £750 £688 £675
Central London median daily rate £575 £525 £525
% change year-on-year +9.52% - -
Number of hourly rates quoted 8 10 22
10th Percentile £24.19 £23.35 "
25th Percentile £26.00 £33.31 £21.00
Median hourly rate £33.50 £38.50 £22.00
Median % change year-on-year -12.99% +75.00% +2.33%
75th Percentile £37.75 £52.38 £37.50
90th Percentile £47.43 £57.88 £51.04
Central London median hourly rate £27.50 £38.50 £22.50
% change year-on-year -28.57% +71.11% +4.65%

JavaScript
Job Vacancy Trend in the City of London

Job postings citing JavaScript as a proportion of all IT jobs advertised in the City of London.

Job vacancy trend for JavaScript in the City of London

JavaScript
Contractor Daily Rate Trend in the City of London

3-month moving average daily rate quoted in jobs citing JavaScript in the City of London.

Daily rate trend for JavaScript in the City of London

JavaScript
Daily Rate Histogram in the City of London

Daily rate distribution for jobs citing JavaScript in the City of London over the 6 months to 29 July 2021.

Daily rate histogram for JavaScript in the City of London

JavaScript
Contractor Hourly Rate Trend in the City of London

3-month moving average hourly rates quoted in jobs citing JavaScript in the City of London.

Hourly rate trend for JavaScript in the City of London

JavaScript
Hourly Rate Histogram in the City of London

Hourly rate distribution of jobs citing JavaScript in the City of London over the 6 months to 29 July 2021.

Hourly rate histogram for JavaScript in the City of London

JavaScript
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 JavaScript within the City of London region over the 6 months to 29 July 2021. 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
London Bridge - 3 £600 -
JavaScript
Central London

For the 6 months to 29 July 2021, IT contractor jobs citing JavaScript 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 JavaScript.

1 136 (46.90%) HTML
2 131 (45.17%) React
3 122 (42.07%) CSS
4 111 (38.28%) Agile Software Development
5 100 (34.48%) AngularJS
6 89 (30.69%) TDD
7 88 (30.34%) Azure
8 82 (28.28%) DevOps
9 80 (27.59%) TypeScript
10 74 (25.52%) Node.js
11 71 (24.48%) Java
12 70 (24.14%) AWS
13 67 (23.10%) HTML5
13 67 (23.10%) Software Engineering
14 63 (21.72%) C#
15 60 (20.69%) Full Stack Development
16 54 (18.62%) Continuous Integration
17 53 (18.28%) .NET
18 50 (17.24%) Front End Development
19 48 (16.55%) Git (software)
20 46 (15.86%) SQL
21 45 (15.52%) Redux
22 42 (14.48%) Social Skills
23 41 (14.14%) Business Intelligence
24 40 (13.79%) Python
24 40 (13.79%) CSS3
25 39 (13.45%) Power BI
25 39 (13.45%) Power Platform
25 39 (13.45%) PowerShell
26 38 (13.10%) Jenkins

JavaScript
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 37 (12.76%) SharePoint
2 9 (3.10%) SharePoint 2010
3 8 (2.76%) Apache
4 6 (2.07%) CMS
4 6 (2.07%) Oracle SOA Suite
4 6 (2.07%) Red Hat Fuse
5 4 (1.38%) Cloud Foundry
5 4 (1.38%) Confluence
6 2 (0.69%) JBoss
6 2 (0.69%) Umbraco
7 1 (0.34%) Adobe Experience Manager
7 1 (0.34%) Apache Spark
7 1 (0.34%) Appian
7 1 (0.34%) BizTalk Server
7 1 (0.34%) Elasticsearch
7 1 (0.34%) Moodle
7 1 (0.34%) nginx
7 1 (0.34%) SugarCRM
7 1 (0.34%) Tomcat
7 1 (0.34%) WordPress
Applications
1 9 (3.10%) InfoPath
2 3 (1.03%) Adobe Illustrator
3 2 (0.69%) Chatbot
4 1 (0.34%) Microsoft Excel
4 1 (0.34%) Spreadsheet
Business Applications
1 4 (1.38%) Dynamics CRM
2 3 (1.03%) Magento
2 3 (1.03%) Payment Gateway
Cloud Services
1 88 (30.34%) Azure
2 70 (24.14%) AWS
3 39 (13.45%) Power Platform
4 22 (7.59%) Azure Active Directory
5 18 (6.21%) Serverless
6 14 (4.83%) AWS Lambda
6 14 (4.83%) Microsoft 365
7 10 (3.45%) Azure Logic Apps
8 9 (3.10%) Power Automate
8 9 (3.10%) Slack
8 9 (3.10%) Workato
9 7 (2.41%) GCP
10 5 (1.72%) AWS CloudFormation
10 5 (1.72%) GitHub
10 5 (1.72%) npm
10 5 (1.72%) PowerApps
11 4 (1.38%) Azure Data Factory
11 4 (1.38%) Snowflake
11 4 (1.38%) Zapier
12 3 (1.03%) Azure Cosmos DB
Communications & Networking
1 9 (3.10%) HTTP
2 6 (2.07%) BGP
3 3 (1.03%) Internet
4 2 (0.69%) HTTPS
5 1 (0.34%) NAS
5 1 (0.34%) Network Security
5 1 (0.34%) SAN
Database & Business Intelligence
1 39 (13.45%) Power BI
2 38 (13.10%) SQL Server
3 16 (5.52%) MySQL
4 13 (4.48%) MongoDB
4 13 (4.48%) Relational Database
5 10 (3.45%) PostgreSQL
6 9 (3.10%) Metadata
6 9 (3.10%) NoSQL
6 9 (3.10%) Tableau
7 5 (1.72%) Azure SQL Database
7 5 (1.72%) Big Data
8 4 (1.38%) Amazon DynamoDB
9 3 (1.03%) Oracle Database
9 3 (1.03%) RDBMS
9 3 (1.03%) Redis
10 2 (0.69%) Apache Hive
10 2 (0.69%) Data Lake
10 2 (0.69%) SQL Server Integration Services
11 1 (0.34%) HBase
11 1 (0.34%) SAP HANA
Development Applications
1 48 (16.55%) Git (software)
2 38 (13.10%) Jenkins
3 22 (7.59%) Octopus Deploy
4 18 (6.21%) Cucumber
4 18 (6.21%) JIRA
4 18 (6.21%) Selenium
5 17 (5.86%) Jasmine
6 13 (4.48%) Cypress.io
6 13 (4.48%) Karma Test Runner
7 7 (2.41%) Protractor
7 7 (2.41%) webpack
8 6 (2.07%) Bitbucket
8 6 (2.07%) JSUnit
9 5 (1.72%) JUnit
9 5 (1.72%) Postman
10 4 (1.38%) Grunt
10 4 (1.38%) Subversion
11 3 (1.03%) jMock
11 3 (1.03%) Maven
11 3 (1.03%) SoapUI
General
1 42 (14.48%) Social Skills
2 33 (11.38%) Banking
2 33 (11.38%) Finance
3 15 (5.17%) Marketing
4 12 (4.14%) Retail
5 10 (3.45%) Analytical Skills
6 8 (2.76%) Front Office
7 6 (2.07%) Investment Banking
7 6 (2.07%) Public Sector
8 5 (1.72%) Legal
9 4 (1.38%) Games
9 4 (1.38%) Presentation Skills
10 3 (1.03%) Advertising
10 3 (1.03%) Law
10 3 (1.03%) Multimedia
11 2 (0.69%) Financial Institution
11 2 (0.69%) Retail Banking
11 2 (0.69%) Telecoms
12 1 (0.34%) Publishing
Job Titles
1 198 (68.28%) Developer
2 40 (13.79%) React Developer
3 34 (11.72%) Senior Developer
4 33 (11.38%) Front End Developer (Client-Side Developer)
5 26 (8.97%) JavaScript Developer
6 25 (8.62%) Technical Leader
7 22 (7.59%) Full Stack Developer
8 20 (6.90%) Java Developer
9 18 (6.21%) Backend Developer
10 16 (5.52%) PHP Developer
11 15 (5.17%) C# Developer
12 13 (4.48%) SharePoint Developer
13 12 (4.14%) .NET Developer
13 12 (4.14%) Senior Front-End Developer
14 11 (3.79%) Angular Developer
14 11 (3.79%) Architect
15 10 (3.45%) Senior React Developer
16 9 (3.10%) Software Engineer
17 8 (2.76%) Azure Developer
17 8 (2.76%) C# .NET Developer
Libraries, Frameworks & Software Standards
1 136 (46.90%) HTML
2 131 (45.17%) React
3 122 (42.07%) CSS
4 100 (34.48%) AngularJS
5 74 (25.52%) Node.js
6 67 (23.10%) HTML5
7 53 (18.28%) .NET
8 45 (15.52%) Redux
9 40 (13.79%) CSS3
10 37 (12.76%) jQuery
10 37 (12.76%) Sass
11 34 (11.72%) Web Services
12 32 (11.03%) Spring
13 30 (10.34%) REST
14 27 (9.31%) ASP.NET
15 24 (8.28%) RESTful
15 24 (8.28%) Vue.js
16 23 (7.93%) LESS
17 22 (7.59%) ASP.NET Core
18 20 (6.90%) Jest
Miscellaneous
1 34 (11.72%) Greenfield Project
2 24 (8.28%) User Experience
3 10 (3.45%) Data Structures
3 10 (3.45%) Enterprise Software
4 9 (3.10%) Clustering
4 9 (3.10%) Fixed Income
4 9 (3.10%) Mobile App
5 7 (2.41%) Foreign Exchange (FX)
6 6 (2.07%) Derivative
6 6 (2.07%) Equities
6 6 (2.07%) Hedge funds
7 5 (1.72%) Social Media
8 3 (1.03%) Algorithms
8 3 (1.03%) Client/Server
8 3 (1.03%) Cloud Native
8 3 (1.03%) Graphic Design
8 3 (1.03%) Legacy Systems
9 2 (0.69%) N-Tier
9 2 (0.69%) Public Cloud
9 2 (0.69%) Virtual Team
Operating Systems
1 13 (4.48%) Linux
2 6 (2.07%) Apple iOS
3 4 (1.38%) Android
3 4 (1.38%) Unix
3 4 (1.38%) Windows
4 2 (0.69%) Mac OS
5 1 (0.34%) Red Hat Enterprise Linux
Processes & Methodologies
1 111 (38.28%) Agile Software Development
2 89 (30.69%) TDD
3 82 (28.28%) DevOps
4 67 (23.10%) Software Engineering
5 60 (20.69%) Full Stack Development
6 54 (18.62%) Continuous Integration
7 50 (17.24%) Front End Development
8 41 (14.14%) Business Intelligence
9 35 (12.07%) Analytics
9 35 (12.07%) Microservices
10 33 (11.38%) Continuous Improvement
10 33 (11.38%) Web Development
11 31 (10.69%) Mentoring
12 24 (8.28%) MVC
12 24 (8.28%) Test Automation
13 23 (7.93%) Scaled Agile Framework
13 23 (7.93%) Unit Testing
14 20 (6.90%) Investment Management
14 20 (6.90%) Scrum
15 19 (6.55%) BDD
Programming Languages
1 80 (27.59%) TypeScript
2 71 (24.48%) Java
3 63 (21.72%) C#
4 46 (15.86%) SQL
5 40 (13.79%) Python
6 39 (13.45%) PowerShell
7 25 (8.62%) PHP
8 17 (5.86%) ES6
9 12 (4.14%) Java 8
10 9 (3.10%) C++
11 7 (2.41%) PL/SQL
11 7 (2.41%) Ruby
12 5 (1.72%) Bash Shell
12 5 (1.72%) Go
12 5 (1.72%) Kotlin
13 3 (1.03%) Scala
14 2 (0.69%) Apex Code
14 2 (0.69%) Apple Swift
14 2 (0.69%) Objective-C
14 2 (0.69%) Perl
Qualifications
1 15 (5.17%) Degree
2 10 (3.45%) Security Cleared
3 8 (2.76%) SC Cleared
4 6 (2.07%) AWS Certification
5 3 (1.03%) Computer Science Degree
6 1 (0.34%) ITIL Certification
6 1 (0.34%) Microsoft Certification
Quality Assurance & Compliance
1 38 (13.10%) QA
2 13 (4.48%) Accessibility
3 5 (1.72%) Data Quality
4 3 (1.03%) WCAG
5 2 (0.69%) GDPR
6 1 (0.34%) PMO
6 1 (0.34%) SLA
System Software
1 35 (12.07%) Docker
2 24 (8.28%) Active Directory
3 1 (0.34%) RACF
Systems Management
1 15 (5.17%) Kubernetes
2 11 (3.79%) Terraform
3 7 (2.41%) Ansible
4 5 (1.72%) Opscode Chef
5 4 (1.38%) Puppet
6 1 (0.34%) CSIRT
6 1 (0.34%) Marathon
Vendors
1 31 (10.69%) Microsoft
1 31 (10.69%) Oracle
2 17 (5.86%) Salesforce.com
3 9 (3.10%) MuleSoft
3 9 (3.10%) Nintex
4 6 (2.07%) Adobe
5 4 (1.38%) HubSpot
5 4 (1.38%) WorldPay
6 3 (1.03%) Workday
7 2 (0.69%) Google
7 2 (0.69%) IBM
7 2 (0.69%) Rollbar
7 2 (0.69%) Splunk
7 2 (0.69%) Tealium
8 1 (0.34%) Alteryx
8 1 (0.34%) New Relic
8 1 (0.34%) Red Hat
8 1 (0.34%) Salesforce Marketing Cloud
8 1 (0.34%) ServiceNow
8 1 (0.34%) Zend