Period
to 11 December 2018

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 11 December 2018 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
11 Dec 2018
Same period 2017 Same period 2016
Rank 6 8 7
Rank change year-on-year +2 -1 +1
Contract jobs citing JavaScript 6,372 6,101 5,789
As % of all contract IT jobs advertised in London 13.53% 12.85% 13.04%
As % of the Programming Languages category 26.92% 26.48% 29.19%
Number of daily rates quoted 4,947 4,853 4,542
London median daily rate £500 £485 £450
Median daily rate % change year-on-year +3.09% +7.78% +5.88%
10th Percentile £361 £340 £313
90th Percentile £650 £631 £600
England median daily rate £463 £450 £415
% change year-on-year +2.78% +8.43% +3.75%
Number of hourly rates quoted 19 20 31
London median hourly rate £36.00 £26.89 £37.50
Median hourly rate % change year-on-year +33.89% -28.30% +54.77%
10th Percentile £19.20 £14.90 £20.34
90th Percentile £53.75 £28.50 £80.75
England median hourly rate £42.50 £42.75 £39.00
% change year-on-year -0.58% +9.62% +20.00%

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 23,670 23,040 19,834
As % of all contract IT jobs advertised in London 50.26% 48.52% 44.67%
Number of daily rates quoted 18,070 17,568 14,781
London median daily rate £525 £500 £475
Median daily rate % change year-on-year +5.00% +5.26% +5.56%
10th Percentile £363 £350 £313
90th Percentile £675 £675 £633
England median daily rate £475 £463 £425
% change year-on-year +2.70% +8.82% +3.03%
Number of hourly rates quoted 115 145 113
London median hourly rate £36.00 £32.50 £33.87
Median hourly rate % change year-on-year +10.77% -4.03% +39.76%
10th Percentile £18.53 £18.01 £16.21
90th Percentile £58.75 £51.00 £57.38
England median hourly rate £42.19 £40.00 £38.88
% change year-on-year +5.48% +2.89% +3.67%

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 11 December 2018.

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 11 December 2018.

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 11 December 2018. 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 1,416 £500 +5.26% 599
West London -2 259 £475 +5.56% 366
South London +6 192 £463 -2.63% 36
East London -7 120 £525 +5.00% 121
North London -4 16 £401 -0.93% 22
JavaScript
England

For the 6 months to 11 December 2018, 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 3,200 (50.22%) HTML
2 3,077 (48.29%) Agile Software Development
3 2,881 (45.21%) CSS
4 2,148 (33.71%) AngularJS
5 2,052 (32.20%) React
6 1,808 (28.37%) TDD
7 1,735 (27.23%) Node.js
8 1,704 (26.74%) Java
9 1,520 (23.85%) HTML5
10 1,407 (22.08%) Front End Development
11 1,274 (19.99%) Git (software)
12 1,207 (18.94%) Finance
13 1,145 (17.97%) C#
14 1,090 (17.11%) .NET
15 958 (15.03%) BDD
16 948 (14.88%) Amazon AWS
17 941 (14.77%) Test Automation
18 917 (14.39%) SQL
19 910 (14.28%) Redux
20 907 (14.23%) CSS3
21 888 (13.94%) Microservices
22 839 (13.17%) MVC
23 838 (13.15%) jQuery
24 800 (12.55%) Docker
25 791 (12.41%) REST
26 765 (12.01%) Scrum
27 762 (11.96%) ES6
28 757 (11.88%) DevOps
29 756 (11.86%) Microsoft Azure
30 734 (11.52%) Continuous Integration

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
1 249 (3.91%) CMS
1 249 (3.91%) Elasticsearch
2 206 (3.23%) Confluence
3 119 (1.87%) WordPress
4 117 (1.84%) SharePoint
5 95 (1.49%) Apache
6 88 (1.38%) Drupal
7 75 (1.18%) IIS
8 53 (0.83%) Tomcat
9 52 (0.82%) Adobe Experience Manager
10 49 (0.77%) WebSphere
11 48 (0.75%) Apache Spark
12 33 (0.52%) Umbraco
13 31 (0.49%) NServiceBus
14 28 (0.44%) Gunicorn
15 26 (0.41%) Oracle SOA Suite
15 26 (0.41%) Sitecore CMS
16 25 (0.39%) JBoss
17 22 (0.35%) SharePoint 2013
18 21 (0.33%) Cloud Foundry
Applications
1 112 (1.76%) Photoshop
2 30 (0.47%) InfoPath
3 29 (0.46%) InVision
4 28 (0.44%) Fireworks
5 21 (0.33%) Adobe Illustrator
6 19 (0.30%) Microsoft Excel
7 17 (0.27%) Chatbot
8 10 (0.16%) Adobe Creative Suite
9 5 (0.078%) Microsoft PowerPoint
9 5 (0.078%) OmniGraffle
9 5 (0.078%) Spreadsheet
9 5 (0.078%) SPSS
10 4 (0.063%) GIMP
10 4 (0.063%) Maya
11 3 (0.047%) Acrobat
11 3 (0.047%) InDesign
11 3 (0.047%) Microsoft Office
11 3 (0.047%) MS Visio
12 2 (0.031%) Microsoft Project
13 1 (0.016%) SketchUp
Business Applications
1 73 (1.15%) Dynamics CRM
2 27 (0.42%) Magento
3 10 (0.16%) Salesforce.com CRM
4 9 (0.14%) Dynamics AX
4 9 (0.14%) Dynamics NAV
5 8 (0.13%) Adobe Campaign
5 8 (0.13%) SAP Oil and Gas
6 7 (0.11%) Shopify
7 6 (0.094%) SAP Hybris
8 5 (0.078%) Payment Gateway
9 4 (0.063%) Distributed Ledger
9 4 (0.063%) NetSuite
9 4 (0.063%) SDL Web 8
9 4 (0.063%) thinkFolio
10 3 (0.047%) ION MarketView
10 3 (0.047%) Remedy ITSM
11 2 (0.031%) Infor SunSystems
11 2 (0.031%) SunGard Martini
12 1 (0.016%) BigMachines
12 1 (0.016%) OpenCart
Cloud Services
1 948 (14.88%) Amazon AWS
2 756 (11.86%) Microsoft Azure
3 289 (4.54%) Serverless
4 241 (3.78%) GitHub
5 202 (3.17%) Google Cloud Platform
6 175 (2.75%) AWS Lambda
7 171 (2.68%) npm
8 131 (2.06%) SaaS
9 73 (1.15%) Heroku
10 57 (0.89%) PaaS
11 48 (0.75%) Google Analytics
12 45 (0.71%) Office 365
13 43 (0.67%) Azure Functions
13 43 (0.67%) Cloud Computing
14 39 (0.61%) Amazon CloudWatch
14 39 (0.61%) Amazon EC2
14 39 (0.61%) Amazon SQS
15 38 (0.60%) Amazon S3
16 37 (0.58%) Dynamics 365
17 35 (0.55%) AWS CloudFormation
Communications & Networking
1 203 (3.19%) HTTP
2 97 (1.52%) Internet
3 58 (0.91%) TCP/IP
4 55 (0.86%) SSL
5 48 (0.75%) AMQP
6 47 (0.74%) DNS
7 42 (0.66%) FTP
8 36 (0.56%) Firewall
9 18 (0.28%) VPN
10 17 (0.27%) HTTPS
11 16 (0.25%) Intranet
12 11 (0.17%) SSH
13 10 (0.16%) SMTP
14 8 (0.13%) ICMP
14 8 (0.13%) LAN
15 6 (0.094%) RTMP
15 6 (0.094%) SAN
16 5 (0.078%) Bluetooth
16 5 (0.078%) Kerberos
16 5 (0.078%) WAN
Database & Business Intelligence
1 577 (9.06%) SQL Server
2 449 (7.05%) MySQL
3 374 (5.87%) NoSQL
4 372 (5.84%) MongoDB
5 304 (4.77%) Relational Database
6 275 (4.32%) PostgreSQL
7 106 (1.66%) Big Data
8 101 (1.59%) Redis
9 94 (1.48%) RDBMS
10 92 (1.44%) Apache Cassandra
11 79 (1.24%) Hadoop
12 68 (1.07%) Azure SQL Database
13 63 (0.99%) Amazon DynamoDB
14 44 (0.69%) SQL Server Integration Services
15 41 (0.64%) Blockchain
16 40 (0.63%) Couchbase
17 37 (0.58%) SQL Server 2016
18 34 (0.53%) SQL Server 2012
19 31 (0.49%) Amazon RDS
19 31 (0.49%) SQL Server 2008
Development Applications
1 1,274 (19.99%) Git (software)
2 637 (10.00%) Jenkins
3 525 (8.24%) Selenium
4 456 (7.16%) JIRA
5 316 (4.96%) webpack
6 295 (4.63%) gulp
7 279 (4.38%) Maven
8 274 (4.30%) Cucumber
9 272 (4.27%) Mocha
10 244 (3.83%) Jasmine
11 185 (2.90%) TeamCity
12 168 (2.64%) Grunt
13 163 (2.56%) Karma Test Runner
13 163 (2.56%) Subversion
14 154 (2.42%) Visual Studio
15 152 (2.39%) WebDriver
16 121 (1.90%) JUnit
17 120 (1.88%) Protractor
17 120 (1.88%) Visual Studio Team System
18 114 (1.79%) Team Foundation Server
General
1 1,207 (18.94%) Finance
2 632 (9.92%) Banking
3 342 (5.37%) Retail
4 226 (3.55%) Front Office
5 144 (2.26%) Investment Banking
6 137 (2.15%) Marketing
7 100 (1.57%) Games
8 73 (1.15%) Advertising
9 71 (1.11%) Publishing
10 63 (0.99%) Telecoms
11 47 (0.74%) Financial Institution
12 44 (0.69%) Law
12 44 (0.69%) Legal
13 34 (0.53%) Back Office
14 19 (0.30%) Automotive
15 15 (0.24%) Manufacturing
16 14 (0.22%) Electronics
17 10 (0.16%) Online Betting
18 9 (0.14%) Retail Banking
19 8 (0.13%) Billing
Job Titles
1 4,940 (77.53%) Developer
2 1,169 (18.35%) JavaScript Developer
3 1,108 (17.39%) Front End Developer (Client-Side Developer)
4 1,040 (16.32%) React Developer
5 671 (10.53%) Full Stack Developer
6 614 (9.64%) Angular Developer
7 598 (9.38%) Java Developer
8 565 (8.87%) Senior Developer
9 495 (7.77%) .NET Developer
10 460 (7.22%) C# Developer
11 385 (6.04%) Node.js Developer
12 225 (3.53%) HTML Developer
13 206 (3.23%) C# .NET Developer
14 192 (3.01%) UI Developer
15 170 (2.67%) Web Developer
16 152 (2.39%) PHP Developer
16 152 (2.39%) Senior JavaScript Developer
17 147 (2.31%) Senior React Developer
18 144 (2.26%) Architect
18 144 (2.26%) Lead Developer
Libraries, Frameworks & Software Standards
1 3,200 (50.22%) HTML
2 2,881 (45.21%) CSS
3 2,148 (33.71%) AngularJS
4 2,052 (32.20%) React
5 1,735 (27.23%) Node.js
6 1,520 (23.85%) HTML5
7 1,090 (17.11%) .NET
8 910 (14.28%) Redux
9 907 (14.23%) CSS3
10 838 (13.15%) jQuery
11 791 (12.41%) REST
12 676 (10.61%) Sass
13 639 (10.03%) RESTful
14 623 (9.78%) Spring
15 604 (9.48%) Web Services
16 566 (8.88%) ASP.NET
17 473 (7.42%) Twitter Bootstrap
18 434 (6.81%) XML
19 411 (6.45%) JSON
20 345 (5.41%) ASP.NET Web API
Miscellaneous
1 685 (10.75%) User Experience
2 585 (9.18%) Greenfield Project
3 385 (6.04%) Fintech
4 306 (4.80%) Mobile App
5 288 (4.52%) Analytical Skills
6 141 (2.21%) Data Structures
7 140 (2.20%) Algorithms
8 129 (2.02%) Fixed Income
9 90 (1.41%) Self-Motivation
10 87 (1.37%) Enterprise Software
11 78 (1.22%) Foreign Exchange (FX)
12 69 (1.08%) Hedge funds
13 53 (0.83%) Equities
14 50 (0.78%) Derivative
15 49 (0.77%) Video\Live Streaming
16 48 (0.75%) Video on Demand
17 44 (0.69%) Cloud Native
18 38 (0.60%) Linux Command Line
19 36 (0.56%) W3C
20 31 (0.49%) Virtual Team
Operating Systems
1 473 (7.42%) Linux
2 226 (3.55%) Apple iOS
3 215 (3.37%) Android
4 210 (3.30%) Unix
5 177 (2.78%) Windows
6 63 (0.99%) Windows Server
7 33 (0.52%) Ubuntu
8 25 (0.39%) Mac OS X
9 23 (0.36%) Red Hat Enterprise Linux
10 22 (0.35%) CentOS
11 18 (0.28%) VMS
12 14 (0.22%) Debian
13 12 (0.19%) Fedora
14 11 (0.17%) Mac OS
15 6 (0.094%) Windows Server 2012
16 5 (0.078%) Android TV
16 5 (0.078%) Windows 10
16 5 (0.078%) Windows 7
17 4 (0.063%) Windows Server 2008
18 2 (0.031%) Windows Phone
Processes & Methodologies
1 3,077 (48.29%) Agile Software Development
2 1,808 (28.37%) TDD
3 1,407 (22.08%) Front End Development
4 958 (15.03%) BDD
5 941 (14.77%) Test Automation
6 888 (13.94%) Microservices
7 839 (13.17%) MVC
8 765 (12.01%) Scrum
9 757 (11.88%) DevOps
10 734 (11.52%) Continuous Integration
11 652 (10.23%) OO
12 626 (9.82%) Web Development
13 503 (7.89%) Software Engineering
14 481 (7.55%) E-Commerce
15 403 (6.32%) Unit Testing
16 398 (6.25%) Problem-Solving
17 376 (5.90%) Open Source
18 307 (4.82%) Analytics
19 306 (4.80%) Kanban
20 299 (4.69%) Responsive Web Design
Programming Languages
1 1,704 (26.74%) Java
2 1,145 (17.97%) C#
3 917 (14.39%) SQL
4 762 (11.96%) ES6
5 666 (10.45%) Python
6 661 (10.37%) TypeScript
7 400 (6.28%) PHP
8 373 (5.85%) Java 8
9 242 (3.80%) Ruby
10 178 (2.79%) Scala
11 176 (2.76%) Go
12 117 (1.84%) C++
13 110 (1.73%) PowerShell
14 99 (1.55%) T-SQL
15 95 (1.49%) Bash Shell
16 81 (1.27%) ES7
17 75 (1.18%) C
18 69 (1.08%) PL/SQL
19 68 (1.07%) Perl
20 52 (0.82%) Apple Swift
Qualifications
1 292 (4.58%) Degree
2 183 (2.87%) Security Cleared
3 128 (2.01%) SC Cleared
4 114 (1.79%) Computer Science Degree
5 52 (0.82%) BPSS Clearance
6 18 (0.28%) Master's Degree
7 11 (0.17%) CTC Cleared
7 11 (0.17%) Microsoft Certification
8 10 (0.16%) ITIL Certification
9 8 (0.13%) AWS Certification
10 7 (0.11%) DBS Check
10 7 (0.11%) ISTQB
10 7 (0.11%) Numerate Degree
11 5 (0.078%) Sun Certification
12 4 (0.063%) CEH
12 4 (0.063%) CISSP
12 4 (0.063%) DV Cleared
12 4 (0.063%) TOGAF Certification
13 3 (0.047%) OCPJP
13 3 (0.047%) PMI Certification
Quality Assurance & Compliance
1 337 (5.29%) QA
2 27 (0.42%) Disclosure Scotland
2 27 (0.42%) WCAG
3 20 (0.31%) SLA
4 17 (0.27%) GDPR
5 15 (0.24%) Data Quality
6 7 (0.11%) MiFID
7 4 (0.063%) ISO/IEC 27001
8 3 (0.047%) PCI DSS
8 3 (0.047%) PSD2
8 3 (0.047%) Section 508
8 3 (0.047%) Solvency II
8 3 (0.047%) WAI
9 1 (0.016%) FedRAMP
9 1 (0.016%) FISMA
9 1 (0.016%) HIPAA
System Software
1 800 (12.55%) Docker
2 39 (0.61%) Active Directory
3 27 (0.42%) VMware Infrastructure
4 19 (0.30%) Hyper-V
5 16 (0.25%) VirtualBox
6 15 (0.24%) HDFS
7 12 (0.19%) Apache ZooKeeper
8 11 (0.17%) Virtual Machines
9 4 (0.063%) KVM
9 4 (0.063%) LXC
9 4 (0.063%) Oracle RAC
10 3 (0.047%) Apache Flume
10 3 (0.047%) VMware ESXi
10 3 (0.047%) XenApp
11 2 (0.031%) OpenAM
11 2 (0.031%) OpenDJ
11 2 (0.031%) Varnish
11 2 (0.031%) VMware NSX
12 1 (0.016%) Ceph
12 1 (0.016%) vSphere
Systems Management
1 337 (5.29%) Kubernetes
2 235 (3.69%) Ansible
3 161 (2.53%) Terraform
4 120 (1.88%) Puppet
5 100 (1.57%) Opscode Chef
6 62 (0.97%) Kibana
7 50 (0.78%) Docker Swarm
8 46 (0.72%) logstash
9 31 (0.49%) Single Sign-On
10 30 (0.47%) Salt
11 29 (0.46%) Grafana
12 27 (0.42%) Packer
13 20 (0.31%) Prometheus
14 17 (0.27%) Nagios
15 16 (0.25%) HP Quality Center
16 12 (0.19%) Graphite
16 12 (0.19%) Mesos
17 11 (0.17%) Graylog
18 7 (0.11%) systemd
19 6 (0.094%) Marathon
Vendors
1 402 (6.31%) Microsoft
2 325 (5.10%) Google
3 274 (4.30%) Oracle
4 145 (2.28%) Adobe
5 122 (1.91%) ServiceNow
6 84 (1.32%) Splunk
7 81 (1.27%) Salesforce.com
8 42 (0.66%) IBM
8 42 (0.66%) VMware
9 41 (0.64%) SAP
10 40 (0.63%) Atlassian
11 35 (0.55%) Cypress Semiconductor
12 33 (0.52%) Nintex
12 33 (0.52%) Sitecore
13 32 (0.50%) New Relic
13 32 (0.50%) Sybase
13 32 (0.50%) Tableau
14 30 (0.47%) hybris
15 26 (0.41%) Bloomberg
16 22 (0.35%) Red Hat