Period
to 20 August 2019

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 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.

JavaScript (including ECMAScript)
England > London
6 months to
20 Aug 2019
Same period 2018 Same period 2017
Rank 5 6 8
Rank change year-on-year +1 +2 -1
Contract jobs citing JavaScript 5,416 6,339 5,474
As % of all contract IT jobs advertised in London 13.71% 13.92% 12.81%
As % of the Programming Languages category 29.02% 27.81% 26.72%
Number of daily rates quoted 4,217 4,920 4,201
London median daily rate £505 £500 £475
Median daily rate % change year-on-year +1.00% +5.26% +5.56%
10th Percentile £363 £363 £325
90th Percentile £675 £638 £625
England median daily rate £475 £450 £425
% change year-on-year +5.56% +5.88% +6.25%
Number of hourly rates quoted 36 24 17
London median hourly rate £50.00 £34.00 £22.62
Median hourly rate % change year-on-year +47.06% +50.31% -24.03%
10th Percentile £26.00 £18.04 £13.65
90th Percentile £122.50 £49.63 £44.05
England median hourly rate £50.00 £42.50 £41.50
% change year-on-year +17.65% +2.41% +9.93%

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 18,661 22,792 20,483
As % of all contract IT jobs advertised in London 47.26% 50.06% 47.92%
Number of daily rates quoted 14,085 17,381 15,237
London median daily rate £525 £520 £500
Median daily rate % change year-on-year +0.96% +4.00% +11.11%
10th Percentile £363 £363 £331
90th Percentile £688 £675 £650
England median daily rate £475 £475 £450
% change year-on-year - +5.56% +5.88%
Number of hourly rates quoted 116 169 150
London median hourly rate £42.50 £39.00 £40.00
Median hourly rate % change year-on-year +8.97% -2.50% +46.08%
10th Percentile £17.00 £18.00 £17.20
90th Percentile £61.00 £60.50 £52.05
England median hourly rate £44.00 £41.53 £40.25
% change year-on-year +5.95% +3.18% +7.33%

JavaScript
Job Vacancy Trend in London

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

Job vacancy trend for JavaScript in London

JavaScript
Contractor Daily Rate Trend in London

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing JavaScript in London.

Contractor daily rate trend for JavaScript in London

JavaScript
Contractor Daily Rate Histogram in London

The daily rate distribution of IT jobs citing JavaScript in London over the 6 months to 20 August 2019.

Contractor daily rate histogram for JavaScript in London

JavaScript
Contractor Hourly Rate Trend in London

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing JavaScript in London.

Contractor hourly rate trend for JavaScript in London

JavaScript
Contractor Hourly Rate Histogram in London

The hourly rate distribution of IT jobs citing JavaScript in London over the 6 months to 20 August 2019.

Contractor 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 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
Central London -2 1,173 £500 - 476
West London +1 207 £450 -7.22% 220
South London +7 192 £450 - 39
East London -11 71 £539 +19.72% 129
North London +3 21 £450 +5.88% 25
JavaScript
England

For the 6 months to 20 August 2019, 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 2,654 (49.00%) Agile Software Development
2 2,454 (45.31%) HTML
3 2,227 (41.12%) CSS
4 1,846 (34.08%) React
5 1,534 (28.32%) AngularJS
6 1,464 (27.03%) Java
7 1,349 (24.91%) Node.js
8 1,262 (23.30%) TDD
9 1,166 (21.53%) Front End Development
10 1,058 (19.53%) C#
11 1,035 (19.11%) Finance
12 1,009 (18.63%) HTML5
13 901 (16.64%) Git (software)
13 901 (16.64%) SQL
14 882 (16.29%) .NET
15 828 (15.29%) DevOps
16 821 (15.16%) Amazon AWS
17 771 (14.24%) Python
18 734 (13.55%) Microsoft Azure
19 731 (13.50%) Scrum
20 715 (13.20%) Microservices
21 703 (12.98%) Redux
22 700 (12.92%) Docker
23 663 (12.24%) TypeScript
24 658 (12.15%) Test Automation
25 645 (11.91%) REST
26 615 (11.36%) Web Services
27 592 (10.93%) CSS3
28 587 (10.84%) ES6
29 584 (10.78%) BDD

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
1 214 (3.95%) CMS
2 205 (3.79%) Elasticsearch
3 196 (3.62%) Confluence
4 117 (2.16%) Apache
5 112 (2.07%) Adobe Experience Manager
6 105 (1.94%) SharePoint
7 83 (1.53%) WordPress
8 66 (1.22%) Apache Spark
9 55 (1.02%) Drupal
10 53 (0.98%) WebSphere
11 47 (0.87%) IIS
12 45 (0.83%) Tomcat
13 38 (0.70%) JBoss
14 29 (0.54%) Apache Solr
15 27 (0.50%) Umbraco
16 26 (0.48%) nginx
17 22 (0.41%) Appian
18 18 (0.33%) EPiServer
19 17 (0.31%) ArcGIS
19 17 (0.31%) WebLogic
Applications
1 78 (1.44%) Photoshop
2 57 (1.05%) Sketch
3 50 (0.92%) Microsoft Excel
4 41 (0.76%) Adobe Illustrator
5 20 (0.37%) InVision
6 17 (0.31%) Microsoft Office
6 17 (0.31%) Microsoft PowerPoint
6 17 (0.31%) Zeplin
7 13 (0.24%) Adobe Creative Suite
8 10 (0.18%) Chatbot
8 10 (0.18%) Marvel
9 7 (0.13%) UXPin
10 5 (0.092%) MS Visio
11 4 (0.074%) Adobe After Effects
11 4 (0.074%) InDesign
12 3 (0.055%) Adobe XD
12 3 (0.055%) FreeHand
13 2 (0.037%) Adobe Premiere
14 1 (0.018%) Fireworks
14 1 (0.018%) Spreadsheet
Business Applications
1 77 (1.42%) Dynamics CRM
2 45 (0.83%) Magento
3 26 (0.48%) Adobe Campaign
4 10 (0.18%) Shopify
5 9 (0.17%) Remedy ITSM
6 7 (0.13%) Distributed Ledger
6 7 (0.13%) NetSuite
7 6 (0.11%) Eloqua
7 6 (0.11%) R3 Corda
7 6 (0.11%) SAP ERP
7 6 (0.11%) SAP Hybris
7 6 (0.11%) SAP Oil and Gas
8 5 (0.092%) Payment Gateway
8 5 (0.092%) Salesforce.com CRM
9 4 (0.074%) BusinessWorks
9 4 (0.074%) Oracle Cash Management
9 4 (0.074%) SAP S/4HANA
10 3 (0.055%) Dynamics AX
10 3 (0.055%) Fredhopper
10 3 (0.055%) Oracle BPM
Cloud Services
1 821 (15.16%) Amazon AWS
2 734 (13.55%) Microsoft Azure
3 219 (4.04%) GitHub
4 215 (3.97%) Serverless
5 199 (3.67%) npm
6 164 (3.03%) Google Cloud Platform
7 156 (2.88%) AWS Lambda
8 116 (2.14%) SaaS
9 105 (1.94%) OpenShift
10 93 (1.72%) Amazon S3
11 83 (1.53%) Amazon SQS
12 79 (1.46%) Amazon EC2
13 69 (1.27%) PaaS
14 67 (1.24%) Dynamics 365
15 57 (1.05%) Adobe Analytics
16 56 (1.03%) Power Platform
17 50 (0.92%) Office 365
18 49 (0.90%) AWS Elastic Beanstalk
19 48 (0.89%) Google Analytics
20 47 (0.87%) Heroku
Communications & Networking
1 77 (1.42%) HTTP
2 32 (0.59%) Firewall
3 22 (0.41%) SSL
4 21 (0.39%) Internet
5 19 (0.35%) FTP
5 19 (0.35%) TCP/IP
6 16 (0.30%) Intranet
7 14 (0.26%) DNS
8 7 (0.13%) Network Security
8 7 (0.13%) SSH
9 6 (0.11%) AMQP
9 6 (0.11%) DKIM
9 6 (0.11%) DMARC
9 6 (0.11%) DVB
9 6 (0.11%) HTTPS
9 6 (0.11%) Intrusion Detection
9 6 (0.11%) Reverse Proxy
9 6 (0.11%) Skype
10 4 (0.074%) RTMP
10 4 (0.074%) VPN
Database & Business Intelligence
1 479 (8.84%) SQL Server
2 358 (6.61%) MySQL
3 327 (6.04%) NoSQL
4 223 (4.12%) PostgreSQL
5 217 (4.01%) MongoDB
6 185 (3.42%) Relational Database
7 116 (2.14%) Big Data
8 86 (1.59%) Apache Cassandra
9 83 (1.53%) Amazon DynamoDB
10 76 (1.40%) Amazon RDS
11 73 (1.35%) Redis
12 69 (1.27%) Hadoop
13 64 (1.18%) SQL Server Integration Services
14 55 (1.02%) Amazon Redshift
14 55 (1.02%) Blockchain
15 44 (0.81%) Power BI
16 41 (0.76%) RDBMS
17 39 (0.72%) Azure SQL Database
17 39 (0.72%) Data Warehouse
18 35 (0.65%) SQL Server Reporting Services
Development Applications
1 901 (16.64%) Git (software)
2 489 (9.03%) Jenkins
3 371 (6.85%) JIRA
4 277 (5.11%) webpack
5 254 (4.69%) Selenium
6 236 (4.36%) Jasmine
7 205 (3.79%) gulp
8 194 (3.58%) Cucumber
9 181 (3.34%) Maven
10 164 (3.03%) Grunt
11 142 (2.62%) Karma Test Runner
12 132 (2.44%) TeamCity
13 128 (2.36%) Visual Studio
14 123 (2.27%) Subversion
15 121 (2.23%) Bitbucket
16 108 (1.99%) Mocha
17 105 (1.94%) JUnit
18 100 (1.85%) GitLab
18 100 (1.85%) Protractor
19 84 (1.55%) Visual Studio Team System
General
1 1,035 (19.11%) Finance
2 439 (8.11%) Banking
3 248 (4.58%) Front Office
4 244 (4.51%) Marketing
5 235 (4.34%) Retail
6 172 (3.18%) Public Sector
7 125 (2.31%) Investment Banking
8 80 (1.48%) Games
9 61 (1.13%) Advertising
9 61 (1.13%) Publishing
10 46 (0.85%) Law
11 43 (0.79%) Financial Institution
12 42 (0.78%) Legal
13 32 (0.59%) Telecoms
14 28 (0.52%) Manufacturing
15 26 (0.48%) Pharmaceutical
16 24 (0.44%) Retail Banking
17 23 (0.42%) Back Office
18 21 (0.39%) Electronics
19 9 (0.17%) Automotive
Job Titles
1 4,015 (74.13%) Developer
2 967 (17.85%) React Developer
3 906 (16.73%) JavaScript Developer
4 801 (14.79%) Front End Developer (Client-Side Developer)
5 630 (11.63%) Full Stack Developer
6 416 (7.68%) Senior Developer
7 405 (7.48%) Angular Developer
8 397 (7.33%) Java Developer
9 339 (6.26%) .NET Developer
10 244 (4.51%) C# Developer
11 227 (4.19%) UI Developer
12 210 (3.88%) Architect
13 199 (3.67%) Node.js Developer
14 189 (3.49%) Python Developer
15 153 (2.82%) JavaScript Engineer
16 148 (2.73%) Software Engineer
17 126 (2.33%) AWS Engineer
17 126 (2.33%) Web Developer
18 125 (2.31%) HTML Developer
19 124 (2.29%) C# .NET Developer
Libraries, Frameworks & Software Standards
1 2,454 (45.31%) HTML
2 2,227 (41.12%) CSS
3 1,846 (34.08%) React
4 1,534 (28.32%) AngularJS
5 1,349 (24.91%) Node.js
6 1,009 (18.63%) HTML5
7 882 (16.29%) .NET
8 703 (12.98%) Redux
9 645 (11.91%) REST
10 615 (11.36%) Web Services
11 592 (10.93%) CSS3
12 532 (9.82%) jQuery
13 485 (8.95%) RESTful
14 481 (8.88%) Sass
15 373 (6.89%) JSON
16 363 (6.70%) ASP.NET
17 359 (6.63%) Spring
18 335 (6.19%) XML
19 322 (5.95%) Vue.js
20 317 (5.85%) Twitter Bootstrap
Miscellaneous
1 555 (10.25%) User Experience
2 457 (8.44%) Greenfield Project
3 265 (4.89%) Mobile App
4 242 (4.47%) Analytical Skills
5 119 (2.20%) Fixed Income
6 117 (2.16%) Derivative
7 109 (2.01%) Data Structures
8 107 (1.98%) Data Protection Act
9 106 (1.96%) Hedge funds
10 101 (1.86%) Enterprise Software
11 82 (1.51%) Algorithms
12 78 (1.44%) Foreign Exchange (FX)
13 70 (1.29%) Self-Motivation
14 65 (1.20%) Equities
15 61 (1.13%) Virtual Team
16 57 (1.05%) Linux Command Line
16 57 (1.05%) Social Media
17 54 (1.00%) Video on Demand
18 46 (0.85%) Video\Live Streaming
19 44 (0.81%) Cloud Native
Operating Systems
1 477 (8.81%) Linux
2 170 (3.14%) Windows
3 143 (2.64%) Apple iOS
4 135 (2.49%) Android
5 116 (2.14%) Unix
6 33 (0.61%) Mac OS X
7 26 (0.48%) Ubuntu
7 26 (0.48%) Windows Server
8 25 (0.46%) Red Hat Enterprise Linux
9 18 (0.33%) Debian
10 17 (0.31%) VMS
11 16 (0.30%) CentOS
12 11 (0.20%) openSUSE
12 11 (0.20%) Windows Server 2012
13 10 (0.18%) Windows Server 2008
14 9 (0.17%) CoreOS
14 9 (0.17%) Mac OS
15 8 (0.15%) Windows 10
16 6 (0.11%) Solaris
17 5 (0.092%) Kali Linux
Processes & Methodologies
1 2,654 (49.00%) Agile Software Development
2 1,262 (23.30%) TDD
3 1,166 (21.53%) Front End Development
4 828 (15.29%) DevOps
5 731 (13.50%) Scrum
6 715 (13.20%) Microservices
7 658 (12.15%) Test Automation
8 584 (10.78%) BDD
9 542 (10.01%) Continuous Integration
10 524 (9.68%) MVC
11 507 (9.36%) Software Engineering
12 457 (8.44%) Web Development
13 448 (8.27%) E-Commerce
14 444 (8.20%) OO
15 370 (6.83%) Open Source
16 368 (6.79%) Fintech
17 312 (5.76%) Analytics
18 302 (5.58%) Problem-Solving
19 297 (5.48%) SDLC
20 268 (4.95%) Unit Testing
Programming Languages
1 1,464 (27.03%) Java
2 1,058 (19.53%) C#
3 901 (16.64%) SQL
4 771 (14.24%) Python
5 663 (12.24%) TypeScript
6 587 (10.84%) ES6
7 303 (5.59%) PHP
8 288 (5.32%) Ruby
9 218 (4.03%) Java 8
10 153 (2.82%) C++
11 132 (2.44%) Go
12 122 (2.25%) Scala
13 113 (2.09%) PowerShell
14 112 (2.07%) T-SQL
15 79 (1.46%) ES7
16 70 (1.29%) Perl
17 69 (1.27%) Bash Shell
18 57 (1.05%) Groovy
19 56 (1.03%) Shell Script
20 52 (0.96%) R
Qualifications
1 258 (4.76%) Degree
2 206 (3.80%) Security Cleared
3 162 (2.99%) SC Cleared
4 78 (1.44%) Computer Science Degree
5 34 (0.63%) BPSS Clearance
6 21 (0.39%) DBS Check
7 20 (0.37%) Master's Degree
8 16 (0.30%) DV Cleared
9 12 (0.22%) AWS Certification
10 7 (0.13%) CTC Cleared
10 7 (0.13%) ISTQB
10 7 (0.13%) Numerate Degree
11 6 (0.11%) BC Cleared
11 6 (0.11%) HND
12 4 (0.074%) PhD
12 4 (0.074%) TOGAF Certification
13 3 (0.055%) CHECK Team Member
13 3 (0.055%) Microsoft Certification
14 2 (0.037%) ITIL Certification
14 2 (0.037%) PMI Certification
Quality Assurance & Compliance
1 279 (5.15%) QA
2 21 (0.39%) SLA
3 20 (0.37%) WCAG
4 15 (0.28%) Data Quality
5 13 (0.24%) ISO/IEC 27001
6 12 (0.22%) COBIT
6 12 (0.22%) NIST
7 10 (0.18%) GDPR
8 7 (0.13%) Disclosure Scotland
9 4 (0.074%) GxP
9 4 (0.074%) PCI DSS
9 4 (0.074%) PSD2
9 4 (0.074%) WAI
10 1 (0.018%) EMIR
10 1 (0.018%) HL7
10 1 (0.018%) IFRS
10 1 (0.018%) ISO/IEC 20000
10 1 (0.018%) MiFID
10 1 (0.018%) PMO
10 1 (0.018%) SEPA
System Software
1 700 (12.92%) Docker
2 59 (1.09%) Active Directory
3 19 (0.35%) Virtual Machines
4 13 (0.24%) VMware Infrastructure
5 9 (0.17%) HDFS
6 4 (0.074%) Microsoft App-V
7 3 (0.055%) VMware ESXi
7 3 (0.055%) XenApp
8 2 (0.037%) Varnish
8 2 (0.037%) vSphere
9 1 (0.018%) Firmware
9 1 (0.018%) GridGain
9 1 (0.018%) Hyper-V
9 1 (0.018%) LXC
9 1 (0.018%) VirtualBox
9 1 (0.018%) Xen
9 1 (0.018%) zsh
Systems Management
1 409 (7.55%) Kubernetes
2 230 (4.25%) Terraform
3 202 (3.73%) Ansible
4 73 (1.35%) Puppet
5 40 (0.74%) Kibana
6 33 (0.61%) Opscode Chef
7 32 (0.59%) Grafana
8 27 (0.50%) logstash
9 18 (0.33%) ZABBIX
10 17 (0.31%) Single Sign-On
11 16 (0.30%) Graphite
11 16 (0.30%) Nessus
12 15 (0.28%) Consul
13 14 (0.26%) Salt
13 14 (0.26%) Sysdig
14 12 (0.22%) Mesos
15 8 (0.15%) Marathon
15 8 (0.15%) Nagios
16 7 (0.13%) Docker Swarm
16 7 (0.13%) HP Fortify
Vendors
1 343 (6.33%) Microsoft
2 246 (4.54%) Oracle
3 231 (4.27%) Adobe
4 190 (3.51%) Google
5 142 (2.62%) ServiceNow
6 94 (1.74%) Salesforce.com
7 61 (1.13%) Splunk
8 59 (1.09%) Cypress Semiconductor
9 48 (0.89%) Atlassian
10 47 (0.87%) Bloomberg
11 46 (0.85%) Reuters
12 42 (0.78%) SAP
13 37 (0.68%) hybris
14 35 (0.65%) MuleSoft
15 30 (0.55%) IBM
16 27 (0.50%) New Relic
17 25 (0.46%) Red Hat
18 24 (0.44%) Sitecore
19 23 (0.42%) Tableau
20 20 (0.37%) VMware