Period
to 1 October 2020

The following table provides summary statistics for contract job vacancies advertised in 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 1 October 2020 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)
England > London
6 months to
1 Oct 2020
Same period 2019 Same period 2018
Rank 12 6 6
Rank change year-on-year -6 0 +2
Contract jobs citing JavaScript 1,511 5,113 6,347
As % of all contract jobs advertised in London 11.18% 13.36% 13.93%
As % of the Programming Languages category 22.18% 28.09% 27.70%
Number of daily rates quoted 1,271 4,123 4,933
Median daily rate £520 £518 £500
Median daily rate % change year-on-year +0.48% +3.50% +5.26%
10th Percentile £325 £363 £363
90th Percentile £740 £675 £638
England median daily rate £475 £475 £450
% change year-on-year - +5.56% +5.88%
Number of hourly rates quoted 18 34 17
Median hourly rate £35.00 £50.00 £45.00
Median hourly rate % change year-on-year -30.00% +11.11% +65.68%
10th Percentile £20.45 £25.00 £19.15
90th Percentile £51.77 £122.50 £55.00
England median hourly rate £35.00 £47.50 £42.50
% change year-on-year -26.32% +11.76% -

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 London with a requirement for coding skills.

All Programming Languages
London
Contract vacancies with a requirement for coding skills 6,812 18,203 22,913
As % of all contract IT jobs advertised in London 50.40% 47.55% 50.28%
Number of daily rates quoted 4,736 13,776 17,464
Median daily rate £525 £525 £525
10th Percentile £350 £363 £363
90th Percentile £740 £688 £675
England median daily rate £500 £485 £475
% change year-on-year +3.09% +2.11% +5.56%
Number of hourly rates quoted 74 114 142
Median hourly rate £35.00 £45.00 £40.00
Median hourly rate % change year-on-year -22.22% +12.50% +9.10%
10th Percentile £22.50 £20.92 £18.06
90th Percentile £49.62 £60.38 £62.90
Median hourly rate £35.00 £45.00 £42.27
% change year-on-year -22.22% +6.47% +5.66%

JavaScript
Job Vacancy Trend in London

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

Job vacancy trend for JavaScript in London

JavaScript
Contractor Daily Rate Trend in London

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

Daily rate trend for JavaScript in London

JavaScript
Daily Rate Histogram in London

Daily rate distribution for jobs citing JavaScript in London over the 6 months to 1 October 2020.

Daily rate histogram for JavaScript in London

JavaScript
Contractor Hourly Rate Trend in London

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

Hourly rate trend for JavaScript in London

JavaScript
Hourly Rate Histogram in London

Hourly rate distribution of jobs citing JavaScript in London over the 6 months to 1 October 2020.

Hourly rate histogram for JavaScript in London

JavaScript
Contract Job Locations in 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 London region over the 6 months to 1 October 2020. 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
Central London -9 174 £509 -1.69% 279
South London -4 46 £508 +14.82% 8
West London -14 32 £500 +11.11% 100
East London +11 13 £363 -32.56% 49
JavaScript
England

For the 6 months to 1 October 2020, 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 London region with a requirement for JavaScript.

1 781 (51.69%) Agile Software Development
2 619 (40.97%) React
3 593 (39.25%) Java
4 576 (38.12%) HTML
5 559 (37.00%) AngularJS
6 540 (35.74%) Finance
7 502 (33.22%) CSS
8 482 (31.90%) Python
9 475 (31.44%) AWS
10 401 (26.54%) Web Services
10 401 (26.54%) Software Engineering
11 396 (26.21%) Node.js
12 355 (23.49%) Azure
13 354 (23.43%) Front Office
14 313 (20.71%) SQL
15 301 (19.92%) Fixed Income
16 300 (19.85%) Asset Management
17 296 (19.59%) Derivative
17 296 (19.59%) DevOps
18 293 (19.39%) .NET
19 282 (18.66%) Vue.js
20 269 (17.80%) Banking
21 268 (17.74%) Equities
22 264 (17.47%) Hedge funds
23 253 (16.74%) HTML5
24 252 (16.68%) Front End Development
25 251 (16.61%) Foreign Exchange (FX)
26 248 (16.41%) C#
27 238 (15.75%) TDD
27 238 (15.75%) Investment Management

JavaScript
Co-occurring IT Skills in 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 60 (3.97%) Elasticsearch
2 39 (2.58%) Apache
3 34 (2.25%) SharePoint
4 30 (1.99%) Confluence
5 29 (1.92%) CMS
6 21 (1.39%) Apache Spark
7 17 (1.13%) Tomcat
8 16 (1.06%) Apache Solr
9 15 (0.99%) WebLogic
10 13 (0.86%) Red Hat Fuse
11 11 (0.73%) IIS
12 10 (0.66%) Oracle SOA Suite
12 10 (0.66%) WordPress
13 8 (0.53%) Drupal
13 8 (0.53%) JBoss
13 8 (0.53%) nginx
14 6 (0.40%) Apache Airflow
15 5 (0.33%) Appian
15 5 (0.33%) Jetty
15 5 (0.33%) MQSeries
Applications
1 27 (1.79%) Microsoft Excel
2 22 (1.46%) Photoshop
3 12 (0.79%) Sketch
4 10 (0.66%) Chatbot
5 9 (0.60%) Acrobat
6 5 (0.33%) Adobe Illustrator
6 5 (0.33%) InVision
7 4 (0.26%) Adobe Creative Suite
7 4 (0.26%) Adobe Premiere
7 4 (0.26%) Microsoft PowerPoint
7 4 (0.26%) Zeplin
8 3 (0.20%) Adobe XD
9 2 (0.13%) Figma
9 2 (0.13%) Microsoft Office
10 1 (0.066%) 3ds Max
10 1 (0.066%) Adobe After Effects
10 1 (0.066%) Blender
10 1 (0.066%) Flinto
10 1 (0.066%) Maya
10 1 (0.066%) MS Visio
Business Applications
1 28 (1.85%) Dynamics CRM
2 14 (0.93%) Salesforce.com CRM
3 13 (0.86%) Magento
4 6 (0.40%) Oracle ERP
5 5 (0.33%) Dynamics AX
5 5 (0.33%) Dynamics NAV
5 5 (0.33%) Sparx Enterprise Architect
6 4 (0.26%) SAP Oil and Gas
7 3 (0.20%) SAP ERP
7 3 (0.20%) Shopify
8 1 (0.066%) NetSuite
8 1 (0.066%) SAP S/4HANA
Cloud Services
1 475 (31.44%) AWS
2 355 (23.49%) Azure
3 213 (14.10%) GCP
4 112 (7.41%) Serverless
5 73 (4.83%) AWS Lambda
6 68 (4.50%) Amazon EC2
7 65 (4.30%) Amazon S3
8 39 (2.58%) GitHub
9 37 (2.45%) Power Platform
10 36 (2.38%) SaaS
11 27 (1.79%) Dynamics 365
11 27 (1.79%) npm
12 25 (1.65%) Cloud Computing
13 22 (1.46%) PaaS
14 18 (1.19%) OpenShift
15 15 (0.99%) Office 365
16 14 (0.93%) AWS CloudFormation
16 14 (0.93%) Logic Apps
17 13 (0.86%) Amazon ECS
17 13 (0.86%) PowerApps
Communications & Networking
1 23 (1.52%) HTTP
2 11 (0.73%) Internet
2 11 (0.73%) TCP/IP
3 8 (0.53%) Firewall
4 6 (0.40%) DNS
5 5 (0.33%) Intranet
5 5 (0.33%) SSH
6 4 (0.26%) Kerberos
7 3 (0.20%) DVB
7 3 (0.20%) RTMP
7 3 (0.20%) VoIP
7 3 (0.20%) WebEx
8 2 (0.13%) Asterisk PBX
8 2 (0.13%) F5 BIG-IP GTM
8 2 (0.13%) Skype
9 1 (0.066%) DSL
9 1 (0.066%) ISDN
9 1 (0.066%) Network Security
9 1 (0.066%) VPN
9 1 (0.066%) WAN
Database & Business Intelligence
1 143 (9.46%) SQL Server
2 85 (5.63%) MySQL
2 85 (5.63%) NoSQL
3 81 (5.36%) MongoDB
4 73 (4.83%) PostgreSQL
5 63 (4.17%) Amazon DynamoDB
6 46 (3.04%) Relational Database
7 32 (2.12%) Redis
8 27 (1.79%) Big Data
8 27 (1.79%) Power BI
9 24 (1.59%) Data Warehouse
10 20 (1.32%) SQL Server Integration Services
11 19 (1.26%) Cosmos DB
12 17 (1.13%) SQL Server Reporting Services
13 15 (0.99%) Azure SQL Database
14 14 (0.93%) Amazon RDS
15 12 (0.79%) Hadoop
16 10 (0.66%) Apache Cassandra
16 10 (0.66%) RDBMS
17 9 (0.60%) SQL Server 2008
Development Applications
1 238 (15.75%) Git (software)
2 134 (8.87%) Jenkins
3 77 (5.10%) JIRA
4 52 (3.44%) gulp
5 49 (3.24%) Jasmine
5 49 (3.24%) RStudio
6 46 (3.04%) Selenium
7 45 (2.98%) Maven
8 42 (2.78%) Mocha
9 41 (2.71%) webpack
10 39 (2.58%) Subversion
11 38 (2.51%) Grunt
12 32 (2.12%) Cypress.io
13 28 (1.85%) Cucumber
14 23 (1.52%) TeamCity
15 21 (1.39%) JUnit
15 21 (1.39%) WebDriver
16 20 (1.32%) Team Foundation Server
17 18 (1.19%) Artifactory
17 18 (1.19%) Visual Studio Team System
General
1 540 (35.74%) Finance
2 354 (23.43%) Front Office
3 269 (17.80%) Banking
4 181 (11.98%) Investment Banking
5 72 (4.77%) Public Sector
6 33 (2.18%) Marketing
7 29 (1.92%) Retail
8 26 (1.72%) Telecoms
9 18 (1.19%) Manufacturing
10 13 (0.86%) Financial Institution
11 12 (0.79%) Advertising
12 11 (0.73%) Back Office
12 11 (0.73%) Electronics
12 11 (0.73%) Games
12 11 (0.73%) Local Government
13 9 (0.60%) Law
14 5 (0.33%) Pharmaceutical
14 5 (0.33%) Publishing
15 4 (0.26%) Legal
15 4 (0.26%) Retail Banking
Job Titles
1 1,082 (71.61%) Developer
2 278 (18.40%) JavaScript Developer
3 197 (13.04%) Software Engineer
4 176 (11.65%) React Developer
5 163 (10.79%) Front End Developer (Client-Side Developer)
6 150 (9.93%) Full Stack Developer
7 149 (9.86%) Developer/Software Engineer
8 143 (9.46%) Python Developer
9 142 (9.40%) AWS Engineer
10 136 (9.00%) AWS Developer
11 110 (7.28%) Architect
12 105 (6.95%) .NET Developer
13 103 (6.82%) Java Developer
14 100 (6.62%) Senior Developer
15 95 (6.29%) JavaScript Engineer
16 92 (6.09%) Angular Developer
17 81 (5.36%) Python Engineer
18 70 (4.63%) AWS Software Engineer
19 62 (4.10%) Python Software Engineer
20 61 (4.04%) Front Office Developer
Libraries, Frameworks & Software Standards
1 619 (40.97%) React
2 576 (38.12%) HTML
3 559 (37.00%) AngularJS
4 502 (33.22%) CSS
5 401 (26.54%) Web Services
6 396 (26.21%) Node.js
7 293 (19.39%) .NET
8 282 (18.66%) Vue.js
9 253 (16.74%) HTML5
10 165 (10.92%) REST
11 138 (9.13%) ASP.NET
12 135 (8.93%) Redux
13 124 (8.21%) CSS3
13 124 (8.21%) jQuery
14 100 (6.62%) .NET Core
15 98 (6.49%) RESTful
16 84 (5.56%) Sass
17 82 (5.43%) Spring
18 80 (5.29%) GraphQL
19 79 (5.23%) ASP.NET Core
Miscellaneous
1 301 (19.92%) Fixed Income
2 296 (19.59%) Derivative
3 268 (17.74%) Equities
4 264 (17.47%) Hedge funds
5 251 (16.61%) Foreign Exchange (FX)
6 149 (9.86%) User Experience
7 100 (6.62%) Greenfield Project
8 52 (3.44%) Analytical Skills
9 40 (2.65%) Blog
10 36 (2.38%) Mobile App
11 31 (2.05%) Enterprise Software
12 24 (1.59%) Management Information System
13 23 (1.52%) Data Structures
14 22 (1.46%) Algorithms
15 20 (1.32%) Credit Derivative
15 20 (1.32%) Linux Command Line
16 18 (1.19%) Cloud Native
16 18 (1.19%) Equity Derivative
16 18 (1.19%) Virtual Team
17 16 (1.06%) Public Cloud
Operating Systems
1 143 (9.46%) Linux
2 49 (3.24%) Unix
3 44 (2.91%) Android
4 43 (2.85%) Windows
5 37 (2.45%) Apple iOS
6 23 (1.52%) Mac OS X
7 10 (0.66%) Debian
7 10 (0.66%) Red Hat Enterprise Linux
7 10 (0.66%) Ubuntu
8 9 (0.60%) CentOS
9 8 (0.53%) Windows Server
10 5 (0.33%) AIX
10 5 (0.33%) tvOS
11 4 (0.26%) Mac OS
Processes & Methodologies
1 781 (51.69%) Agile Software Development
2 401 (26.54%) Software Engineering
3 300 (19.85%) Asset Management
4 296 (19.59%) DevOps
5 252 (16.68%) Front End Development
6 238 (15.75%) Investment Management
6 238 (15.75%) TDD
7 233 (15.42%) Microservices
8 144 (9.53%) Test Automation
9 120 (7.94%) Web Development
10 117 (7.74%) Fintech
10 117 (7.74%) Scrum
11 113 (7.48%) Open Source
12 108 (7.15%) Migration
13 106 (7.02%) OO
14 105 (6.95%) Portfolio Management
15 100 (6.62%) Analytics
15 100 (6.62%) Continuous Integration
16 99 (6.55%) BDD
17 98 (6.49%) SDLC
Programming Languages
1 593 (39.25%) Java
2 482 (31.90%) Python
3 313 (20.71%) SQL
4 248 (16.41%) C#
5 202 (13.37%) TypeScript
6 86 (5.69%) Kotlin
7 81 (5.36%) PHP
8 60 (3.97%) ES6
9 47 (3.11%) C++
10 41 (2.71%) Go
11 37 (2.45%) Scala
12 35 (2.32%) PowerShell
12 35 (2.32%) Ruby
13 34 (2.25%) R
13 34 (2.25%) T-SQL
14 32 (2.12%) Bash Shell
15 30 (1.99%) C
16 25 (1.65%) Apex Code
17 22 (1.46%) Perl
18 17 (1.13%) VBA
Qualifications
1 134 (8.87%) Security Cleared
2 109 (7.21%) SC Cleared
3 87 (5.76%) Degree
4 43 (2.85%) Computer Science Degree
5 13 (0.86%) Master's Degree
6 12 (0.79%) BPSS Clearance
7 9 (0.60%) DV Cleared
8 7 (0.46%) DBS Check
9 5 (0.33%) TOGAF Certification
10 2 (0.13%) AWS Certification
10 2 (0.13%) Numerate Degree
11 1 (0.066%) BC Cleared
11 1 (0.066%) HNC
11 1 (0.066%) HND
11 1 (0.066%) IBM Certification
11 1 (0.066%) ISTQB
11 1 (0.066%) Microsoft Certification
11 1 (0.066%) MySQL Certification
11 1 (0.066%) PhD
Quality Assurance & Compliance
1 64 (4.24%) QA
2 33 (2.18%) WCAG
3 6 (0.40%) Solvency II
4 4 (0.26%) Data Quality
4 4 (0.26%) WAI
5 3 (0.20%) Government Security Classifications
5 3 (0.20%) SLA
6 2 (0.13%) Disclosure Scotland
6 2 (0.13%) GDPR
6 2 (0.13%) GxP
6 2 (0.13%) MiFID
6 2 (0.13%) Sarbanes-Oxley
6 2 (0.13%) Section 508
6 2 (0.13%) SEPA
7 1 (0.066%) TARGET2
System Software
1 177 (11.71%) Docker
2 25 (1.65%) Active Directory
3 3 (0.20%) Apache ZooKeeper
3 3 (0.20%) HDFS
3 3 (0.20%) VMware Infrastructure
Systems Management
1 121 (8.01%) Kubernetes
2 63 (4.17%) Terraform
3 50 (3.31%) Ansible
4 20 (1.32%) Opscode Chef
4 20 (1.32%) Puppet
5 13 (0.86%) Salt
6 10 (0.66%) Grafana
7 6 (0.40%) Graphite
7 6 (0.40%) Kibana
8 3 (0.20%) Prometheus
8 3 (0.20%) RSA Archer
8 3 (0.20%) Single Sign-On
9 2 (0.13%) HP ALM
9 2 (0.13%) Istio
9 2 (0.13%) TeamSite
10 1 (0.066%) Capistrano
10 1 (0.066%) CFEngine
10 1 (0.066%) Consul
10 1 (0.066%) HP SiteScope
10 1 (0.066%) logstash
Vendors
1 141 (9.33%) Google
2 90 (5.96%) Microsoft
3 73 (4.83%) Oracle
4 43 (2.85%) Salesforce.com
5 31 (2.05%) Adobe
6 28 (1.85%) SAP
7 27 (1.79%) Splunk
8 23 (1.52%) Bloomberg
9 18 (1.19%) Cloudera
9 18 (1.19%) MuleSoft
10 16 (1.06%) ServiceNow
11 15 (0.99%) Sybase
12 12 (0.79%) Red Hat
12 12 (0.79%) Tableau
13 10 (0.66%) Hortonworks
13 10 (0.66%) Informatica
14 8 (0.53%) Cognos
14 8 (0.53%) Sitecore
15 6 (0.40%) hybris
15 6 (0.40%) SaltStack