Period
to 18 January 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 18 January 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
18 Jan 2021
Same period 2020 Same period 2019
Rank 11 9 6
Rank change year-on-year -2 -3 +2
Contract jobs citing JavaScript 2,022 3,673 5,939
As % of all contract jobs advertised in London 11.60% 12.22% 13.35%
As % of the Programming Languages category 23.76% 26.19% 26.66%
Number of daily rates quoted 1,996 2,889 4,699
Median daily rate £525 £525 £500
Median daily rate % change year-on-year - +5.00% +2.56%
10th Percentile £350 £363 £350
90th Percentile £700 £688 £650
England median daily rate £475 £475 £475
Number of hourly rates quoted 11 27 18
Median hourly rate £46.93 £49.28 £36.00
Median hourly rate % change year-on-year -4.77% +36.88% +34.45%
10th Percentile £40.00 £29.95 £19.18
90th Percentile £68.00 £78.75 £53.75
England median hourly rate £41.00 £48.50 £45.00
% change year-on-year -15.46% +7.78% +2.27%

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 8,510 14,023 22,279
As % of all contract IT jobs advertised in London 48.82% 46.66% 50.09%
Number of daily rates quoted 6,239 10,549 17,027
Median daily rate £525 £525 £525
10th Percentile £350 £370 £363
90th Percentile £700 £694 £675
England median daily rate £484 £485 £480
% change year-on-year -0.21% +1.04% +1.05%
Number of hourly rates quoted 53 97 102
Median hourly rate £40.00 £45.50 £36.67
Median hourly rate % change year-on-year -12.09% +24.08% +26.45%
10th Percentile £21.40 £16.95 £18.70
90th Percentile £70.60 £55.20 £53.75
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 18 January 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 18 January 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 18 January 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 -3 210 £550 +4.76% 348
West London -2 38 £538 +14.36% 121
South London +7 32 £450 - 17
East London +13 14 £413 -15.38% 63
JavaScript
England

For the 6 months to 18 January 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.

1 981 (48.52%) Agile Software Development
2 899 (44.46%) React
3 699 (34.57%) Node.js
4 697 (34.47%) HTML
5 695 (34.37%) Finance
6 664 (32.84%) AWS
7 661 (32.69%) Java
8 649 (32.10%) CSS
9 612 (30.27%) AngularJS
10 610 (30.17%) Software Engineering
11 602 (29.77%) Python
12 514 (25.42%) Web Services
13 492 (24.33%) Azure
14 413 (20.43%) Front Office
15 399 (19.73%) Asset Management
15 399 (19.73%) TypeScript
16 389 (19.24%) Docker
17 364 (18.00%) SQL
18 320 (15.83%) .NET
19 314 (15.53%) HTML5
20 309 (15.28%) DevOps
21 308 (15.23%) Git (software)
22 304 (15.03%) TDD
23 292 (14.44%) Kubernetes
24 290 (14.34%) Front End Development
25 287 (14.19%) Investment Management
26 276 (13.65%) C#
27 273 (13.50%) Microservices
28 269 (13.30%) Serverless
29 252 (12.46%) Derivative

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 99 (4.90%) Apache
2 61 (3.02%) Elasticsearch
3 50 (2.47%) CMS
4 44 (2.18%) Apache Spark
5 39 (1.93%) Confluence
6 26 (1.29%) WordPress
7 22 (1.09%) Red Hat Fuse
8 21 (1.04%) SharePoint
9 20 (0.99%) IIS
10 17 (0.84%) Tomcat
11 15 (0.74%) Camunda
12 12 (0.59%) Adobe Experience Manager
13 11 (0.54%) Apache Airflow
13 11 (0.54%) JBoss
13 11 (0.54%) WebSphere
14 10 (0.49%) Appian
14 10 (0.49%) Drupal
15 9 (0.45%) nginx
15 9 (0.45%) WebLogic
16 8 (0.40%) Apache Solr
Applications
1 18 (0.89%) Microsoft Excel
2 12 (0.59%) Photoshop
3 10 (0.49%) Sketch
4 6 (0.30%) Adobe Illustrator
4 6 (0.30%) Adobe XD
5 5 (0.25%) Adobe Creative Suite
5 5 (0.25%) Adobe Premiere
5 5 (0.25%) Chatbot
6 4 (0.20%) Microsoft Office
6 4 (0.20%) Zeplin
7 3 (0.15%) InfoPath
7 3 (0.15%) Microsoft Project
8 2 (0.099%) Adobe After Effects
8 2 (0.099%) InVision
8 2 (0.099%) Maya
8 2 (0.099%) Microsoft PowerPoint
9 1 (0.049%) 3ds Max
9 1 (0.049%) Figma
9 1 (0.049%) Flinto
9 1 (0.049%) SPSS
Business Applications
1 36 (1.78%) Dynamics CRM
2 13 (0.64%) Magento
3 5 (0.25%) Dynamics AX
3 5 (0.25%) Dynamics NAV
3 5 (0.25%) Shopify
4 3 (0.15%) SAP ERP
4 3 (0.15%) Sparx Enterprise Architect
5 2 (0.099%) Payment Gateway
5 2 (0.099%) SAP MDM
6 1 (0.049%) Salesforce.com CRM
6 1 (0.049%) SAP Hybris
6 1 (0.049%) SAP Oil and Gas
6 1 (0.049%) Siebel CRM
6 1 (0.049%) Summit
6 1 (0.049%) Teamcenter
Cloud Services
1 664 (32.84%) AWS
2 492 (24.33%) Azure
3 269 (13.30%) Serverless
4 237 (11.72%) GCP
5 177 (8.75%) AWS Lambda
6 149 (7.37%) Amazon S3
7 86 (4.25%) GitHub
8 84 (4.15%) Amazon EC2
9 74 (3.66%) Amazon SQS
10 67 (3.31%) AWS Step Functions
11 53 (2.62%) Power Platform
12 44 (2.18%) PaaS
13 42 (2.08%) Dynamics 365
13 42 (2.08%) npm
14 39 (1.93%) Logic Apps
15 38 (1.88%) SaaS
16 35 (1.73%) PowerApps
17 28 (1.38%) Cloud Computing
18 25 (1.24%) Power Automate
19 24 (1.19%) AWS CloudFormation
Communications & Networking
1 34 (1.68%) HTTP
2 10 (0.49%) Firewall
3 9 (0.45%) Internet
4 8 (0.40%) TCP/IP
5 7 (0.35%) DNS
6 6 (0.30%) Intranet
6 6 (0.30%) SSL
7 5 (0.25%) DHCP
8 4 (0.20%) DVB
8 4 (0.20%) HTTPS
9 3 (0.15%) Intrusion Detection
9 3 (0.15%) Network Security
9 3 (0.15%) SSH
9 3 (0.15%) Wireshark
10 2 (0.099%) F5 BIG-IP GTM
11 1 (0.049%) DSL
11 1 (0.049%) Extranet
11 1 (0.049%) ISDN
11 1 (0.049%) SAN
11 1 (0.049%) VPN
Database & Business Intelligence
1 164 (8.11%) Amazon DynamoDB
2 139 (6.87%) SQL Server
3 109 (5.39%) MongoDB
4 90 (4.45%) MySQL
5 84 (4.15%) Amazon RDS
5 84 (4.15%) NoSQL
6 76 (3.76%) PostgreSQL
7 60 (2.97%) Relational Database
8 58 (2.87%) Apache Ignite
9 32 (1.58%) Azure SQL Database
9 32 (1.58%) Big Data
10 31 (1.53%) Redis
11 29 (1.43%) Power BI
12 22 (1.09%) SQL Server Reporting Services
13 20 (0.99%) SQL Server Integration Services
14 19 (0.94%) Cosmos DB
15 16 (0.79%) Data Warehouse
15 16 (0.79%) RDBMS
16 15 (0.74%) Neo4j
17 12 (0.59%) Tableau
Development Applications
1 308 (15.23%) Git (software)
2 212 (10.48%) Jenkins
3 117 (5.79%) webpack
4 98 (4.85%) JIRA
5 57 (2.82%) Cypress.io
6 56 (2.77%) gulp
7 53 (2.62%) Jasmine
8 52 (2.57%) Selenium
9 42 (2.08%) Maven
10 39 (1.93%) SonarQube
11 36 (1.78%) Mocha
12 35 (1.73%) Grunt
13 33 (1.63%) Gradle
14 29 (1.43%) GitLab
15 28 (1.38%) TeamCity
16 27 (1.34%) JUnit
17 26 (1.29%) Cucumber
17 26 (1.29%) Karma Test Runner
18 25 (1.24%) Visual Studio Team System
19 24 (1.19%) Visual Studio
General
1 695 (34.37%) Finance
2 413 (20.43%) Front Office
3 220 (10.88%) Banking
4 104 (5.14%) Investment Banking
5 59 (2.92%) Public Sector
6 54 (2.67%) Marketing
7 44 (2.18%) Retail
8 27 (1.34%) Advertising
9 23 (1.14%) Telecoms
10 17 (0.84%) Games
11 16 (0.79%) Manufacturing
12 15 (0.74%) Financial Institution
13 11 (0.54%) Back Office
14 8 (0.40%) Electronics
15 7 (0.35%) Pharmaceutical
16 6 (0.30%) Legal
16 6 (0.30%) Local Government
16 6 (0.30%) Publishing
17 5 (0.25%) Law
18 3 (0.15%) French Language
Job Titles
1 1,502 (74.28%) Developer
2 386 (19.09%) React Developer
3 341 (16.86%) JavaScript Developer
4 271 (13.40%) Software Engineer
5 254 (12.56%) Full Stack Developer
6 210 (10.39%) Developer/Software Engineer
7 202 (9.99%) Front End Developer (Client-Side Developer)
8 151 (7.47%) Python Developer
9 139 (6.87%) Senior Developer
10 124 (6.13%) AWS Developer
11 123 (6.08%) Java Developer
12 110 (5.44%) Angular Developer
13 99 (4.90%) Architect
13 99 (4.90%) Node.js Developer
14 96 (4.75%) JavaScript Engineer
15 95 (4.70%) Python Engineer
16 94 (4.65%) .NET Developer
17 87 (4.30%) UI Developer
18 81 (4.01%) Python Software Engineer
19 57 (2.82%) Software Developer
Libraries, Frameworks & Software Standards
1 899 (44.46%) React
2 699 (34.57%) Node.js
3 697 (34.47%) HTML
4 649 (32.10%) CSS
5 612 (30.27%) AngularJS
6 514 (25.42%) Web Services
7 320 (15.83%) .NET
8 314 (15.53%) HTML5
9 251 (12.41%) Redux
10 240 (11.87%) REST
11 234 (11.57%) Vue.js
12 168 (8.31%) jQuery
13 165 (8.16%) CSS3
14 155 (7.67%) GraphQL
15 140 (6.92%) Spring
16 129 (6.38%) RESTful
17 120 (5.93%) React Native
18 103 (5.09%) Sass
19 97 (4.80%) JSON
20 93 (4.60%) .NET Core
Miscellaneous
1 252 (12.46%) Derivative
2 243 (12.02%) Equities
3 236 (11.67%) User Experience
4 228 (11.28%) Fixed Income
5 178 (8.80%) Hedge funds
6 158 (7.81%) Foreign Exchange (FX)
7 117 (5.79%) Greenfield Project
8 87 (4.30%) Blog
9 68 (3.36%) Analytical Skills
10 66 (3.26%) Mobile App
11 54 (2.67%) Enterprise Software
12 31 (1.53%) Cloud Native
13 29 (1.43%) Clustering
14 28 (1.38%) Data Structures
14 28 (1.38%) Equity Derivative
15 25 (1.24%) Virtual Team
16 23 (1.14%) Credit Derivative
17 22 (1.09%) Public Cloud
18 21 (1.04%) Self-Motivation
19 19 (0.94%) Algorithms
Operating Systems
1 121 (5.98%) Linux
2 63 (3.12%) Android
2 63 (3.12%) Apple iOS
3 46 (2.27%) Windows
4 40 (1.98%) Unix
5 10 (0.49%) Mac OS X
5 10 (0.49%) Red Hat Enterprise Linux
6 8 (0.40%) CentOS
6 8 (0.40%) Ubuntu
6 8 (0.40%) Windows Server
7 4 (0.20%) Debian
7 4 (0.20%) Mac OS
7 4 (0.20%) Windows Server 2012
8 3 (0.15%) AIX
9 2 (0.099%) tvOS
10 1 (0.049%) Kali Linux
10 1 (0.049%) Solaris
10 1 (0.049%) Tizen
10 1 (0.049%) VMS
10 1 (0.049%) Windows Server 2008
Processes & Methodologies
1 981 (48.52%) Agile Software Development
2 610 (30.17%) Software Engineering
3 399 (19.73%) Asset Management
4 309 (15.28%) DevOps
5 304 (15.03%) TDD
6 290 (14.34%) Front End Development
7 287 (14.19%) Investment Management
8 273 (13.50%) Microservices
9 226 (11.18%) Test Automation
10 167 (8.26%) Continuous Integration
11 163 (8.06%) Open Source
12 162 (8.01%) Analytics
13 153 (7.57%) Web Development
14 144 (7.12%) OO
15 131 (6.48%) Scrum
16 124 (6.13%) BDD
17 118 (5.84%) Problem-Solving
18 116 (5.74%) Portfolio Management
19 113 (5.59%) MVC
20 107 (5.29%) Unit Testing
Programming Languages
1 661 (32.69%) Java
2 602 (29.77%) Python
3 399 (19.73%) TypeScript
4 364 (18.00%) SQL
5 276 (13.65%) C#
6 196 (9.69%) Kotlin
7 107 (5.29%) ES6
8 106 (5.24%) PHP
9 79 (3.91%) Scala
10 71 (3.51%) C++
11 70 (3.46%) Go
11 70 (3.46%) Ruby
12 62 (3.07%) Java 8
13 59 (2.92%) PowerShell
14 45 (2.23%) Bash Shell
15 35 (1.73%) Clojure
16 33 (1.63%) R
17 22 (1.09%) C
18 21 (1.04%) Perl
19 18 (0.89%) Groovy
Qualifications
1 131 (6.48%) Security Cleared
2 129 (6.38%) Degree
3 110 (5.44%) SC Cleared
4 56 (2.77%) Computer Science Degree
5 18 (0.89%) Master's Degree
6 9 (0.45%) DV Cleared
7 7 (0.35%) AWS Certification
7 7 (0.35%) BPSS Clearance
8 3 (0.15%) Microsoft Certification
8 3 (0.15%) Numerate Degree
8 3 (0.15%) VMware Certified Professional (VCP)
9 2 (0.099%) MCSE
9 2 (0.099%) TOGAF Certification
10 1 (0.049%) BC Cleared
10 1 (0.049%) CISA
10 1 (0.049%) DBS Check
10 1 (0.049%) HNC
10 1 (0.049%) HND
10 1 (0.049%) IBM Certification
10 1 (0.049%) ISTQB
Quality Assurance & Compliance
1 90 (4.45%) QA
2 15 (0.74%) WCAG
3 12 (0.59%) Data Quality
4 9 (0.45%) WAI
5 6 (0.30%) GDPR
5 6 (0.30%) MiFID
6 4 (0.20%) Section 508
6 4 (0.20%) SLA
7 3 (0.15%) GxP
7 3 (0.15%) PCI DSS
7 3 (0.15%) Sarbanes-Oxley
8 2 (0.099%) SEPA
9 1 (0.049%) Disclosure Scotland
9 1 (0.049%) Government Security Classifications
9 1 (0.049%) ISO 9001
9 1 (0.049%) ISO/IEC 27001
9 1 (0.049%) TARGET2
System Software
1 389 (19.24%) Docker
2 19 (0.94%) Active Directory
3 6 (0.30%) VMware Infrastructure
4 5 (0.25%) Apache ZooKeeper
5 4 (0.20%) HDFS
6 3 (0.15%) Ceph
6 3 (0.15%) NFS
7 2 (0.099%) etcd
7 2 (0.099%) Varnish
8 1 (0.049%) Samba
8 1 (0.049%) VMware ESXi
8 1 (0.049%) vSphere
Systems Management
1 292 (14.44%) Kubernetes
2 225 (11.13%) Terraform
3 46 (2.27%) Ansible
4 29 (1.43%) Puppet
5 16 (0.79%) Grafana
6 15 (0.74%) Opscode Chef
7 12 (0.59%) Graphite
8 9 (0.45%) Salt
9 7 (0.35%) Single Sign-On
10 6 (0.30%) Consul
10 6 (0.30%) Prometheus
11 5 (0.25%) Kibana
12 4 (0.20%) Hadoop YARN
12 4 (0.20%) vRealize
13 3 (0.15%) Mesos
13 3 (0.15%) RSA Archer
13 3 (0.15%) vCenter Server
14 2 (0.099%) logstash
14 2 (0.099%) Nagios
15 1 (0.049%) Control-M
Vendors
1 113 (5.59%) Microsoft
2 80 (3.96%) Oracle
3 71 (3.51%) Google
4 50 (2.47%) Bloomberg
5 49 (2.42%) Splunk
6 40 (1.98%) Adobe
7 28 (1.38%) ServiceNow
8 25 (1.24%) Salesforce.com
9 20 (0.99%) SAP
10 12 (0.59%) Red Hat
10 12 (0.59%) VMware
11 11 (0.54%) Apple
12 10 (0.49%) Cloudera
13 9 (0.45%) Dynatrace
13 9 (0.45%) MuleSoft
14 8 (0.40%) Informatica
14 8 (0.40%) Sitecore
15 7 (0.35%) Atlassian
15 7 (0.35%) hybris
15 7 (0.35%) Sybase