Period
to 20 April 2021

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 20 April 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)
England > London
6 months to
20 Apr 2021
Same period 2020 Same period 2019
Rank 11 8 6
Rank change year-on-year -3 -2 +1
Contract jobs citing JavaScript 2,549 2,834 5,645
As % of all contract jobs advertised in London 11.49% 12.02% 13.37%
As % of the Programming Languages category 24.11% 25.16% 28.01%
Number of daily rates quoted 2,012 2,152 4,415
10th Percentile £363 £363 £356
25th Percentile £433 £438 £425
Median daily rate (50th Percentile) £525 £525 £500
Median % change year-on-year - +5.00% -
75th Percentile £613 £617 £575
90th Percentile £700 £700 £650
England median daily rate £475 £475 £475
Number of hourly rates quoted 19 19 22
10th Percentile £35.50 £40.10 £20.98
25th Percentile £41.66 £45.27 £32.50
Median hourly rate £55.00 £55.00 £36.00
Median % change year-on-year - +52.78% +33.33%
75th Percentile £67.25 £67.52 £53.75
90th Percentile £68.07 £78.75 "
England median hourly rate £43.50 £50.00 £50.00
% change year-on-year -13.00% - +25.00%

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 10,571 11,266 20,152
As % of all contract IT jobs advertised in London 47.66% 47.78% 47.72%
Number of daily rates quoted 7,882 8,427 15,324
10th Percentile £363 £370 £363
25th Percentile £438 £438 £425
Median daily rate (50th Percentile) £525 £525 £525
75th Percentile £638 £613 £610
90th Percentile £713 £700 £675
England median daily rate £500 £500 £481
% change year-on-year - +4.06% +1.16%
Number of hourly rates quoted 70 82 108
10th Percentile £20.95 £18.98 £18.39
25th Percentile £28.31 £31.40 £21.22
Median hourly rate £44.00 £48.17 £36.00
Median % change year-on-year -8.65% +33.79% +8.27%
75th Percentile £61.75 £61.19 £47.50
90th Percentile £68.04 £69.10 £53.75
England median hourly rate £42.50 £44.00 £42.50
% change year-on-year -3.41% +3.53% +6.25%

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 20 April 2021.

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 20 April 2021.

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 20 April 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
Central London -3 261 £500 -4.31% 443
West London -3 46 £550 +4.76% 175
South London +1 20 £450 -5.26% 16
East London +12 16 £500 +11.11% 88
North London +1 1 £375 -28.57% 14
JavaScript
England

For the 6 months to 20 April 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 London region with a requirement for JavaScript.

1 1,170 (45.90%) Agile Software Development
2 1,155 (45.31%) React
3 879 (34.48%) Node.js
4 843 (33.07%) HTML
5 816 (32.01%) Finance
6 799 (31.35%) CSS
7 793 (31.11%) AWS
8 742 (29.11%) Software Engineering
9 680 (26.68%) TypeScript
10 652 (25.58%) Java
11 632 (24.79%) Python
12 613 (24.05%) AngularJS
13 607 (23.81%) Azure
14 544 (21.34%) Web Services
15 535 (20.99%) Docker
16 449 (17.61%) Asset Management
17 447 (17.54%) Kubernetes
18 443 (17.38%) Front Office
19 439 (17.22%) TDD
20 421 (16.52%) DevOps
21 409 (16.05%) .NET
22 404 (15.85%) SQL
23 395 (15.50%) Front End Development
24 389 (15.26%) Serverless
25 376 (14.75%) Git (software)
26 373 (14.63%) C#
27 367 (14.40%) Investment Management
28 358 (14.04%) Terraform
29 336 (13.18%) Microservices
30 323 (12.67%) HTML5

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 72 (2.82%) Apache
2 64 (2.51%) CMS
3 58 (2.28%) Confluence
4 54 (2.12%) SharePoint
5 48 (1.88%) Elasticsearch
6 47 (1.84%) WordPress
7 35 (1.37%) Apache Spark
8 28 (1.10%) Cloud Foundry
9 23 (0.90%) IIS
10 22 (0.86%) Tomcat
11 19 (0.75%) Camunda
12 18 (0.71%) Red Hat Fuse
13 16 (0.63%) Drupal
14 15 (0.59%) Adobe Experience Manager
15 14 (0.55%) nginx
16 11 (0.43%) Headless CMS
16 11 (0.43%) JBoss
16 11 (0.43%) Umbraco
17 10 (0.39%) WebSphere
18 8 (0.31%) Apache Solr
Applications
1 16 (0.63%) Photoshop
2 10 (0.39%) Chatbot
3 9 (0.35%) Microsoft Excel
4 7 (0.27%) Adobe XD
4 7 (0.27%) InfoPath
5 6 (0.24%) Sketch
6 5 (0.20%) Figma
6 5 (0.20%) Microsoft Office
7 4 (0.16%) Microsoft PowerPoint
8 3 (0.12%) Adobe Illustrator
8 3 (0.12%) Maya
8 3 (0.12%) Microsoft Project
9 2 (0.078%) Adobe After Effects
9 2 (0.078%) Adobe Premiere
10 1 (0.039%) Adobe Captivate
10 1 (0.039%) CINEMA 4D
10 1 (0.039%) Final Cut Pro
10 1 (0.039%) Spreadsheet
10 1 (0.039%) SPSS
10 1 (0.039%) UXPin
Business Applications
1 25 (0.98%) Dynamics CRM
2 18 (0.71%) Magento
3 14 (0.55%) Shopify
4 6 (0.24%) Adobe Campaign
5 5 (0.20%) Payment Gateway
6 3 (0.12%) Distributed Ledger
6 3 (0.12%) Salesforce.com CRM
6 3 (0.12%) Summit
7 2 (0.078%) SAP MDM
8 1 (0.039%) Endur
8 1 (0.039%) Maximo
8 1 (0.039%) NetSuite
8 1 (0.039%) SAP Hybris
8 1 (0.039%) Teamcenter
8 1 (0.039%) Tesseract
Cloud Services
1 793 (31.11%) AWS
2 607 (23.81%) Azure
3 389 (15.26%) Serverless
4 279 (10.95%) GCP
5 258 (10.12%) AWS Lambda
6 190 (7.45%) Amazon S3
7 158 (6.20%) Amazon SQS
8 149 (5.85%) AWS Step Functions
9 105 (4.12%) GitHub
10 80 (3.14%) Power Platform
11 55 (2.16%) PaaS
12 52 (2.04%) npm
13 49 (1.92%) SaaS
14 46 (1.80%) Azure Active Directory
15 39 (1.53%) AWS CloudFormation
16 37 (1.45%) Amazon EC2
17 36 (1.41%) Dynamics 365
18 33 (1.29%) IaaS
19 32 (1.26%) Azure Logic Apps
20 30 (1.18%) PowerApps
Communications & Networking
1 49 (1.92%) HTTP
2 16 (0.63%) Internet
3 14 (0.55%) HTTPS
4 12 (0.47%) SAN
5 11 (0.43%) DNS
6 9 (0.35%) Firewall
6 9 (0.35%) NAS
7 8 (0.31%) SSL
8 6 (0.24%) SMS
8 6 (0.24%) TCP/IP
9 5 (0.20%) DMARC
9 5 (0.20%) SMTP
10 4 (0.16%) DHCP
10 4 (0.16%) Network Security
11 3 (0.12%) IPFS
12 2 (0.078%) Intranet
12 2 (0.078%) Intrusion Detection
12 2 (0.078%) Wireshark
13 1 (0.039%) Extranet
13 1 (0.039%) MPLS
Database & Business Intelligence
1 214 (8.40%) Amazon DynamoDB
2 180 (7.06%) SQL Server
3 164 (6.43%) Amazon RDS
4 123 (4.83%) PostgreSQL
5 120 (4.71%) MongoDB
6 104 (4.08%) NoSQL
7 87 (3.41%) MySQL
8 79 (3.10%) Relational Database
9 59 (2.31%) Power BI
10 40 (1.57%) Redis
11 35 (1.37%) Azure SQL Database
12 34 (1.33%) Big Data
13 30 (1.18%) Apache Ignite
14 19 (0.75%) SQL Server Integration Services
14 19 (0.75%) SQL Server Reporting Services
15 16 (0.63%) RDBMS
16 14 (0.55%) Apache Cassandra
17 12 (0.47%) Tableau
18 11 (0.43%) Oracle Database
19 10 (0.39%) Neo4j
Development Applications
1 376 (14.75%) Git (software)
2 254 (9.96%) Jenkins
3 169 (6.63%) webpack
4 126 (4.94%) JIRA
5 81 (3.18%) Cypress.io
6 71 (2.79%) Selenium
7 61 (2.39%) Jasmine
8 56 (2.20%) JUnit
9 54 (2.12%) Maven
9 54 (2.12%) Mocha
10 52 (2.04%) gulp
11 51 (2.00%) Visual Studio
12 48 (1.88%) TeamCity
13 46 (1.80%) Cucumber
14 44 (1.73%) Gradle
15 42 (1.65%) SonarQube
16 37 (1.45%) Grunt
17 35 (1.37%) GitLab
17 35 (1.37%) Octopus Deploy
18 31 (1.22%) Karma Test Runner
General
1 816 (32.01%) Finance
2 443 (17.38%) Front Office
3 217 (8.51%) Banking
4 89 (3.49%) Marketing
5 63 (2.47%) Investment Banking
6 58 (2.28%) Public Sector
7 48 (1.88%) Retail
8 29 (1.14%) Telecoms
9 26 (1.02%) Manufacturing
10 24 (0.94%) Advertising
11 23 (0.90%) Games
12 16 (0.63%) Financial Institution
13 13 (0.51%) Publishing
14 12 (0.47%) Electronics
15 8 (0.31%) Law
15 8 (0.31%) Legal
15 8 (0.31%) Pharmaceutical
16 7 (0.27%) Retail Banking
17 6 (0.24%) Back Office
17 6 (0.24%) Police
Job Titles
1 1,909 (74.89%) Developer
2 576 (22.60%) React Developer
3 384 (15.06%) JavaScript Developer
4 325 (12.75%) Full Stack Developer
5 283 (11.10%) Front End Developer (Client-Side Developer)
6 225 (8.83%) AWS Developer
7 224 (8.79%) Software Engineer
8 220 (8.63%) Senior Developer
9 163 (6.39%) Node.js Developer
10 154 (6.04%) Java Developer
11 151 (5.92%) Developer/Software Engineer
12 132 (5.18%) Python Developer
13 126 (4.94%) .NET Developer
14 125 (4.90%) UI Developer
15 93 (3.65%) Architect
16 90 (3.53%) Angular Developer
17 87 (3.41%) UX Developer
18 82 (3.22%) Designer
18 82 (3.22%) UI Engineer
19 75 (2.94%) UX Designer
Libraries, Frameworks & Software Standards
1 1,155 (45.31%) React
2 879 (34.48%) Node.js
3 843 (33.07%) HTML
4 799 (31.35%) CSS
5 613 (24.05%) AngularJS
6 544 (21.34%) Web Services
7 409 (16.05%) .NET
8 323 (12.67%) HTML5
9 286 (11.22%) Redux
10 250 (9.81%) REST
11 225 (8.83%) GraphQL
12 207 (8.12%) Vue.js
13 197 (7.73%) CSS3
14 196 (7.69%) jQuery
15 184 (7.22%) Spring
16 160 (6.28%) React Native
17 158 (6.20%) RESTful
18 142 (5.57%) Sass
19 132 (5.18%) .NET Core
20 127 (4.98%) Jest
Miscellaneous
1 310 (12.16%) User Experience
2 174 (6.83%) Derivative
3 172 (6.75%) Greenfield Project
4 171 (6.71%) Equities
5 142 (5.57%) Fixed Income
6 109 (4.28%) Hedge funds
7 99 (3.88%) Analytical Skills
8 91 (3.57%) Foreign Exchange (FX)
9 75 (2.94%) Mobile App
10 55 (2.16%) Data Structures
11 54 (2.12%) Blog
12 53 (2.08%) Enterprise Software
13 50 (1.96%) Cloud Native
14 49 (1.92%) Equity Derivative
15 34 (1.33%) Clustering
16 30 (1.18%) Algorithms
17 29 (1.14%) Self-Motivation
18 28 (1.10%) Social Media
19 25 (0.98%) Management Information System
19 25 (0.98%) Virtual Team
Operating Systems
1 137 (5.37%) Linux
2 78 (3.06%) Apple iOS
3 74 (2.90%) Android
4 63 (2.47%) Unix
5 51 (2.00%) Windows
6 14 (0.55%) Mac OS X
7 13 (0.51%) Mac OS
8 11 (0.43%) CentOS
9 10 (0.39%) Red Hat Enterprise Linux
10 7 (0.27%) Ubuntu
11 6 (0.24%) Windows Server
11 6 (0.24%) Windows Server 2012
12 4 (0.16%) CoreOS
13 3 (0.12%) VMS
13 3 (0.12%) Windows Server 2008
14 2 (0.078%) Solaris
14 2 (0.078%) Windows Server 2019
15 1 (0.039%) AIX
15 1 (0.039%) Debian
15 1 (0.039%) Kali Linux
Processes & Methodologies
1 1,170 (45.90%) Agile Software Development
2 742 (29.11%) Software Engineering
3 449 (17.61%) Asset Management
4 439 (17.22%) TDD
5 421 (16.52%) DevOps
6 395 (15.50%) Front End Development
7 367 (14.40%) Investment Management
8 336 (13.18%) Microservices
9 276 (10.83%) Test Automation
10 230 (9.02%) Continuous Integration
11 210 (8.24%) Analytics
12 195 (7.65%) Scrum
13 190 (7.45%) Web Development
14 169 (6.63%) MVC
15 151 (5.92%) OO
16 149 (5.85%) Open Source
17 148 (5.81%) BDD
18 145 (5.69%) Unit Testing
19 128 (5.02%) Portfolio Management
19 128 (5.02%) Problem-Solving
Programming Languages
1 680 (26.68%) TypeScript
2 652 (25.58%) Java
3 632 (24.79%) Python
4 404 (15.85%) SQL
5 373 (14.63%) C#
6 185 (7.26%) Kotlin
7 175 (6.87%) ES6
8 134 (5.26%) PHP
9 102 (4.00%) PowerShell
10 98 (3.84%) Java 8
11 89 (3.49%) Ruby
12 80 (3.14%) C++
13 73 (2.86%) Scala
14 71 (2.79%) Go
15 45 (1.77%) Bash Shell
16 32 (1.26%) PL/SQL
16 32 (1.26%) R
17 25 (0.98%) Groovy
18 21 (0.82%) Apex Code
18 21 (0.82%) Apple Swift
Qualifications
1 150 (5.88%) Degree
2 137 (5.37%) Security Cleared
3 112 (4.39%) SC Cleared
4 35 (1.37%) Computer Science Degree
5 17 (0.67%) AWS Certification
6 16 (0.63%) Master's Degree
7 9 (0.35%) DV Cleared
8 6 (0.24%) BPSS Clearance
9 4 (0.16%) PhD
10 3 (0.12%) Microsoft Certification
11 2 (0.078%) MCSE
11 2 (0.078%) Postgraduate
11 2 (0.078%) VMware Certified Professional (VCP)
12 1 (0.039%) CCNA
12 1 (0.039%) CFA
12 1 (0.039%) CISA
12 1 (0.039%) Cisco Certification
12 1 (0.039%) CISSP
12 1 (0.039%) ISTQB
12 1 (0.039%) ITIL Certification
Quality Assurance & Compliance
1 133 (5.22%) QA
2 17 (0.67%) WCAG
3 16 (0.63%) Data Quality
4 14 (0.55%) GDPR
5 6 (0.24%) MiFID
6 5 (0.20%) WAI
7 3 (0.12%) PCI DSS
7 3 (0.12%) SLA
8 2 (0.078%) Section 508
9 1 (0.039%) Government Security Classifications
9 1 (0.039%) GRC
9 1 (0.039%) GxP
9 1 (0.039%) ISO 9001
9 1 (0.039%) ISO/IEC 27001
9 1 (0.039%) Sarbanes-Oxley
System Software
1 535 (20.99%) Docker
2 46 (1.80%) Active Directory
3 5 (0.20%) VMware Infrastructure
4 3 (0.12%) Ceph
4 3 (0.12%) NFS
4 3 (0.12%) Samba
5 2 (0.078%) Apache ZooKeeper
5 2 (0.078%) VMware ESXi
6 1 (0.039%) HDFS
6 1 (0.039%) OpenAM
6 1 (0.039%) Virtual Desktop
6 1 (0.039%) Virtual Machines
6 1 (0.039%) vSphere
Systems Management
1 447 (17.54%) Kubernetes
2 358 (14.04%) Terraform
3 58 (2.28%) Ansible
4 39 (1.53%) Puppet
5 21 (0.82%) Opscode Chef
6 16 (0.63%) Grafana
7 9 (0.35%) Kibana
7 9 (0.35%) Single Sign-On
8 8 (0.31%) Graphite
8 8 (0.31%) Istio
9 7 (0.27%) Prometheus
10 5 (0.20%) Hadoop YARN
10 5 (0.20%) Salt
11 4 (0.16%) Consul
11 4 (0.16%) Knative
12 3 (0.12%) Galera Cluster
12 3 (0.12%) Mesos
12 3 (0.12%) vRealize
13 2 (0.078%) HP Fortify
13 2 (0.078%) vCenter Server
Vendors
1 154 (6.04%) Microsoft
2 118 (4.63%) Oracle
3 57 (2.24%) Google
4 49 (1.92%) Adobe
5 48 (1.88%) Salesforce.com
6 45 (1.77%) ServiceNow
7 38 (1.49%) Splunk
8 23 (0.90%) Bloomberg
9 21 (0.82%) SAP
10 19 (0.75%) Apple
11 15 (0.59%) New Relic
12 14 (0.55%) DevExpress
13 13 (0.51%) Atlassian
13 13 (0.51%) Optimizely
14 12 (0.47%) VMware
15 10 (0.39%) CA
15 10 (0.39%) CA Agile Central
15 10 (0.39%) Confluent
15 10 (0.39%) Dynatrace
16 9 (0.35%) Nintex