Period
to 16 January 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 16 January 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
16 Jan 2018
Same period 2017 Same period 2016
Rank 8 7 8
Rank change year-on-year -1 +1 +2
Contract jobs citing JavaScript 5,868 5,420 5,355
As % of all contract IT jobs advertised in London 12.64% 12.99% 12.23%
As % of the Programming Languages category 26.10% 28.55% 28.18%
Number of daily rates quoted 4,718 4,256 4,222
London median daily rate £488 £450 £425
Median daily rate % change year-on-year +8.33% +5.88% +5.59%
10th Percentile £344 £317 £300
90th Percentile £631 £600 £591
England median daily rate £450 £425 £400
% change year-on-year +5.88% +6.25% +6.67%
Number of hourly rates quoted 23 32 34
London median hourly rate £26.78 £43.13 £30.10
Median hourly rate % change year-on-year -37.91% +43.30% -19.75%
10th Percentile £21.45 £20.40 £20.13
90th Percentile £28.52 £87.28 £52.50
England median hourly rate £43.50 £37.50 £33.78
% change year-on-year +16.00% +11.03% +3.92%

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 22,486 18,984 19,006
As % of all contract IT jobs advertised in London 48.44% 45.50% 43.40%
Number of daily rates quoted 17,255 14,198 14,186
London median daily rate £500 £475 £450
Median daily rate % change year-on-year +5.26% +5.56% +4.05%
10th Percentile £350 £319 £306
90th Percentile £675 £638 £638
England median daily rate £475 £425 £415
% change year-on-year +11.76% +2.41% +3.75%
Number of hourly rates quoted 152 126 130
London median hourly rate £32.50 £40.00 £29.64
Median hourly rate % change year-on-year -18.75% +34.95% +2.21%
10th Percentile £18.28 £16.29 £14.00
90th Percentile £56.63 £61.25 £52.50
England median hourly rate £40.00 £40.00 £37.50
% change year-on-year - +6.67% +15.38%

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 16 January 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 16 January 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 16 January 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 0 1,258 £483 +7.22% 511
West London +2 329 £463 +8.82% 316
South London -9 134 £475 +24.18% 38
East London +1 97 £500 +14.29% 78
North London -18 8 £325 -16.67% 22
JavaScript
England

For the 6 months to 16 January 2018, IT contractor jobs citing JavaScript also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the London region with a requirement for JavaScript.

1 3,248 (55.35%) HTML
2 2,856 (48.67%) CSS
3 2,822 (48.09%) Agile Software Development
4 1,964 (33.47%) AngularJS
5 1,798 (30.64%) Java
6 1,770 (30.16%) HTML5
7 1,685 (28.72%) React
8 1,682 (28.66%) TDD
9 1,500 (25.56%) Node.js
10 1,179 (20.09%) Finance
11 1,160 (19.77%) C#
12 1,157 (19.72%) Front End Development
13 1,141 (19.44%) .NET
14 1,080 (18.40%) Git (software)
15 1,075 (18.32%) CSS3
16 1,036 (17.66%) SQL
17 917 (15.63%) BDD
18 909 (15.49%) jQuery
19 780 (13.29%) MVC
20 776 (13.22%) RESTful
21 761 (12.97%) Scrum
22 757 (12.90%) Web Services
23 721 (12.29%) Banking
24 710 (12.10%) Continuous Integration
25 702 (11.96%) OO
26 692 (11.79%) Test Automation
27 691 (11.78%) Web Development
28 673 (11.47%) Amazon AWS
29 669 (11.40%) Python
30 651 (11.09%) REST

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
1 231 (3.94%) CMS
2 197 (3.36%) Elasticsearch
3 163 (2.78%) Apache
4 128 (2.18%) Confluence
5 110 (1.87%) SharePoint
6 99 (1.69%) Drupal
7 96 (1.64%) Tomcat
8 83 (1.41%) Adobe Experience Manager
9 82 (1.40%) Apache Spark
10 73 (1.24%) WordPress
11 69 (1.18%) IIS
12 68 (1.16%) JBoss
13 50 (0.85%) WebSphere
14 48 (0.82%) Apache Solr
15 40 (0.68%) nginx
16 39 (0.66%) Umbraco
17 34 (0.58%) Cloud Foundry
18 27 (0.46%) NServiceBus
18 27 (0.46%) SharePoint 2013
19 26 (0.44%) Oracle SOA Suite
Applications
1 102 (1.74%) Photoshop
2 65 (1.11%) Microsoft Excel
3 41 (0.70%) Adobe Illustrator
4 30 (0.51%) Adobe Creative Suite
5 29 (0.49%) InVision
6 24 (0.41%) Microsoft Office
7 22 (0.37%) Microsoft PowerPoint
8 19 (0.32%) OmniGraffle
9 14 (0.24%) Chatbot
10 9 (0.15%) InfoPath
11 5 (0.085%) MS Visio
12 4 (0.068%) GIMP
12 4 (0.068%) InDesign
12 4 (0.068%) Microsoft Project
12 4 (0.068%) UXPin
13 2 (0.034%) Acrobat
13 2 (0.034%) Adobe After Effects
13 2 (0.034%) Adobe Premiere
13 2 (0.034%) Mingle
13 2 (0.034%) Spreadsheet
Business Applications
1 91 (1.55%) Dynamics CRM
2 39 (0.66%) Magento
3 18 (0.31%) Payment Gateway
4 17 (0.29%) ION MarketView
5 16 (0.27%) Adobe Campaign
6 7 (0.12%) Shopify
7 6 (0.10%) Oracle BPM
7 6 (0.10%) RMDS
7 6 (0.10%) SAP Oil and Gas
8 4 (0.068%) SAP Hybris
9 3 (0.051%) Distributed Ledger
9 3 (0.051%) Dynamics AX
9 3 (0.051%) Salesforce.com CRM
10 2 (0.034%) Quorum
10 2 (0.034%) SAP ERP
10 2 (0.034%) SAP HR
11 1 (0.017%) Exstream
11 1 (0.017%) SDL Web 8
11 1 (0.017%) Unit4 Business World
11 1 (0.017%) WebTrends
Cloud Services
1 673 (11.47%) Amazon AWS
2 375 (6.39%) Microsoft Azure
3 214 (3.65%) npm
4 149 (2.54%) GitHub
5 105 (1.79%) Serverless
6 93 (1.58%) SaaS
7 65 (1.11%) Google Cloud Platform
7 65 (1.11%) PaaS
8 56 (0.95%) Amazon EC2
8 56 (0.95%) Google Analytics
8 56 (0.95%) Heroku
9 47 (0.80%) Office 365
10 42 (0.72%) IaaS
11 36 (0.61%) Amazon S3
12 33 (0.56%) AWS Lambda
13 28 (0.48%) Route 53
14 27 (0.46%) Dynamics 365
15 23 (0.39%) Yarn
16 22 (0.37%) Amazon SQS
16 22 (0.37%) Cloud Computing
Communications & Networking
1 113 (1.93%) HTTP
2 77 (1.31%) Internet
3 33 (0.56%) TCP/IP
4 32 (0.55%) Firewall
5 31 (0.53%) Intranet
6 29 (0.49%) SSL
7 26 (0.44%) LDAP
8 23 (0.39%) FTP
9 22 (0.37%) SMS
10 21 (0.36%) DNS
11 17 (0.29%) Skype
12 9 (0.15%) LAN
13 8 (0.14%) Network Security
14 7 (0.12%) HTTPS
14 7 (0.12%) SMTP
14 7 (0.12%) SSH
15 6 (0.10%) Kerberos
15 6 (0.10%) WAN
16 5 (0.085%) VPN
17 4 (0.068%) Ethernet
Database & Business Intelligence
1 644 (10.97%) SQL Server
2 379 (6.46%) MySQL
3 371 (6.32%) MongoDB
4 364 (6.20%) NoSQL
5 291 (4.96%) PostgreSQL
6 273 (4.65%) Relational Database
7 163 (2.78%) Big Data
8 156 (2.66%) Redis
9 105 (1.79%) Hadoop
10 94 (1.60%) RDBMS
11 84 (1.43%) SQL Server Integration Services
12 81 (1.38%) SQL Server Reporting Services
13 79 (1.35%) Apache Cassandra
14 78 (1.33%) Amazon DynamoDB
15 59 (1.01%) Neo4j
16 47 (0.80%) Data Warehouse
17 45 (0.77%) SQL Server 2008
18 40 (0.68%) Power BI
19 37 (0.63%) Blockchain
20 35 (0.60%) Oracle Database
Development Applications
1 1,080 (18.40%) Git (software)
2 510 (8.69%) Jenkins
3 353 (6.02%) Selenium
4 344 (5.86%) webpack
5 321 (5.47%) JIRA
6 284 (4.84%) Jasmine
7 264 (4.50%) gulp
8 248 (4.23%) Grunt
9 231 (3.94%) Cucumber
10 218 (3.72%) Maven
11 213 (3.63%) Subversion
12 204 (3.48%) TeamCity
13 192 (3.27%) Mocha
14 149 (2.54%) JUnit
15 145 (2.47%) Babel
16 130 (2.22%) Protractor
17 127 (2.16%) Visual Studio
18 126 (2.15%) Karma Test Runner
19 101 (1.72%) NUnit
20 99 (1.69%) WebDriver
General
1 1,179 (20.09%) Finance
2 721 (12.29%) Banking
3 260 (4.43%) Front Office
4 247 (4.21%) Investment Banking
5 210 (3.58%) Marketing
6 195 (3.32%) Retail
7 126 (2.15%) Games
8 95 (1.62%) Telecoms
9 75 (1.28%) Law
9 75 (1.28%) Publishing
10 64 (1.09%) Financial Institution
11 59 (1.01%) Advertising
12 57 (0.97%) Back Office
13 42 (0.72%) Legal
14 31 (0.53%) Electronics
15 28 (0.48%) Manufacturing
16 22 (0.37%) Retail Banking
17 15 (0.26%) Automotive
18 14 (0.24%) Multimedia
19 13 (0.22%) French Language
Job Titles
1 4,594 (78.29%) Developer
2 1,228 (20.93%) JavaScript Developer
3 837 (14.26%) Front End Developer (Client-Side Developer)
4 666 (11.35%) Java Developer
5 572 (9.75%) Full Stack Developer
6 530 (9.03%) Senior Developer
7 483 (8.23%) Angular Developer
8 450 (7.67%) C# Developer
9 440 (7.50%) .NET Developer
10 386 (6.58%) HTML Developer
11 344 (5.86%) Node.js Developer
12 301 (5.13%) UI Developer
13 214 (3.65%) HTML CSS Developer
14 204 (3.48%) C# .NET Developer
15 199 (3.39%) Web Developer
16 173 (2.95%) Agile Developer
17 161 (2.74%) Python Developer
18 142 (2.42%) Architect
19 140 (2.39%) SQL Developer
20 124 (2.11%) JavaScript Engineer
Libraries, Frameworks & Software Standards
1 3,248 (55.35%) HTML
2 2,856 (48.67%) CSS
3 1,964 (33.47%) AngularJS
4 1,770 (30.16%) HTML5
5 1,685 (28.72%) React
6 1,500 (25.56%) Node.js
7 1,141 (19.44%) .NET
8 1,075 (18.32%) CSS3
9 909 (15.49%) jQuery
10 776 (13.22%) RESTful
11 757 (12.90%) Web Services
12 651 (11.09%) REST
13 645 (10.99%) Sass
14 629 (10.72%) Redux
15 533 (9.08%) ASP.NET
16 486 (8.28%) Spring
17 484 (8.25%) XML
18 423 (7.21%) JSON
19 365 (6.22%) Twitter Bootstrap
20 313 (5.33%) SOAP
Miscellaneous
1 586 (9.99%) User Experience
2 482 (8.21%) Greenfield Project
3 315 (5.37%) Analytical Skills
4 309 (5.27%) Mobile App
5 272 (4.64%) Fintech
6 205 (3.49%) Computer Science
7 129 (2.20%) Foreign Exchange (FX)
8 122 (2.08%) Fixed Income
9 87 (1.48%) Enterprise Software
10 86 (1.47%) Virtual Team
11 78 (1.33%) Derivative
11 78 (1.33%) Hedge funds
12 75 (1.28%) Algorithms
13 72 (1.23%) Data Structures
14 53 (0.90%) Linux Command Line
14 53 (0.90%) Video on Demand
15 51 (0.87%) Equity Derivative
16 45 (0.77%) Social Media
17 37 (0.63%) Equities
18 32 (0.55%) W3C
Operating Systems
1 521 (8.88%) Linux
2 243 (4.14%) Unix
3 180 (3.07%) Windows
4 165 (2.81%) Android
5 158 (2.69%) Apple iOS
6 47 (0.80%) Windows Server
7 37 (0.63%) Red Hat Enterprise Linux
8 25 (0.43%) Mac OS
9 21 (0.36%) Mac OS X
9 21 (0.36%) Ubuntu
10 8 (0.14%) Windows Server 2008
10 8 (0.14%) Windows Server 2012
11 7 (0.12%) CentOS
12 6 (0.10%) CoreOS
12 6 (0.10%) VMS
13 4 (0.068%) Nucleus RTOS
13 4 (0.068%) Windows 10
14 3 (0.051%) AIX
14 3 (0.051%) Windows Phone
14 3 (0.051%) Windows XP
Processes & Methodologies
1 2,822 (48.09%) Agile Software Development
2 1,682 (28.66%) TDD
3 1,157 (19.72%) Front End Development
4 917 (15.63%) BDD
5 780 (13.29%) MVC
6 761 (12.97%) Scrum
7 710 (12.10%) Continuous Integration
8 702 (11.96%) OO
9 692 (11.79%) Test Automation
10 691 (11.78%) Web Development
11 530 (9.03%) DevOps
12 488 (8.32%) E-Commerce
13 438 (7.46%) Microservices
14 406 (6.92%) Software Engineering
15 353 (6.02%) Unit Testing
16 309 (5.27%) Responsive Web Design
17 289 (4.93%) Open Source
18 280 (4.77%) SDLC
19 279 (4.75%) Pair Programming
20 268 (4.57%) Analytics
Programming Languages
1 1,798 (30.64%) Java
2 1,160 (19.77%) C#
3 1,036 (17.66%) SQL
4 669 (11.40%) Python
5 604 (10.29%) ES6
6 366 (6.24%) TypeScript
7 346 (5.90%) PHP
8 259 (4.41%) Ruby
9 239 (4.07%) Scala
10 135 (2.30%) T-SQL
11 128 (2.18%) C++
12 111 (1.89%) PowerShell
13 108 (1.84%) Go
14 100 (1.70%) PL/SQL
15 89 (1.52%) ES7
16 84 (1.43%) Groovy
17 81 (1.38%) Bash Shell
18 69 (1.18%) GraphQL
19 62 (1.06%) C
20 50 (0.85%) Perl
Qualifications
1 222 (3.78%) Degree
2 191 (3.25%) Security Cleared
3 139 (2.37%) SC Cleared
4 83 (1.41%) Computer Science Degree
5 30 (0.51%) BPSS Clearance
6 29 (0.49%) Master's Degree
7 21 (0.36%) DV Cleared
8 16 (0.27%) ISTQB
9 15 (0.26%) ISEB
10 14 (0.24%) PMP
11 12 (0.20%) Microsoft Certification
12 11 (0.19%) CTC Cleared
13 7 (0.12%) ISTQB Foundation Certification
14 5 (0.085%) PhD
15 4 (0.068%) MCPD
16 3 (0.051%) ITIL Certification
16 3 (0.051%) MCP
16 3 (0.051%) MCSE
16 3 (0.051%) PRINCE2 Certification
17 2 (0.034%) Cisco Certification
Quality Assurance & Compliance
1 291 (4.96%) QA
2 35 (0.60%) WCAG
3 29 (0.49%) MiFID
4 16 (0.27%) WAI
5 13 (0.22%) Disclosure Scotland
6 10 (0.17%) GDPR
6 10 (0.17%) PCI DSS
7 8 (0.14%) ISO/IEC 27001
8 7 (0.12%) SLA
9 3 (0.051%) Data Quality
9 3 (0.051%) EMIR
9 3 (0.051%) PMO
10 2 (0.034%) HL7
10 2 (0.034%) Solvency II
11 1 (0.017%) GCP
11 1 (0.017%) ISO/IEC 27002 (supersedes ISO/IEC 17799)
11 1 (0.017%) PSD2
System Software
1 524 (8.93%) Docker
2 61 (1.04%) Active Directory
3 13 (0.22%) VMware Infrastructure
4 10 (0.17%) Apache Flume
4 10 (0.17%) Varnish
5 6 (0.10%) Apache ZooKeeper
5 6 (0.10%) etcd
5 6 (0.10%) Virtual Machines
6 5 (0.085%) VMware NSX
7 4 (0.068%) HDFS
8 3 (0.051%) Hyper-V
9 2 (0.034%) Squid
9 2 (0.034%) vSphere
9 2 (0.034%) XenApp
9 2 (0.034%) XenServer
10 1 (0.017%) VirtualBox
10 1 (0.017%) VMware ESXi
Systems Management
1 170 (2.90%) Ansible
2 164 (2.79%) Kubernetes
3 130 (2.22%) Puppet
4 113 (1.93%) Opscode Chef
5 78 (1.33%) Terraform
6 34 (0.58%) Kibana
7 21 (0.36%) Docker Swarm
7 21 (0.36%) logstash
8 19 (0.32%) Grafana
9 17 (0.29%) Nagios
10 15 (0.26%) Sysdig
11 14 (0.24%) HP Quality Center
11 14 (0.24%) ZABBIX
12 13 (0.22%) Mesos
13 9 (0.15%) Prometheus
14 8 (0.14%) Business Desktop Deployment
14 8 (0.14%) Capistrano
14 8 (0.14%) Consul
14 8 (0.14%) Fluentd
15 7 (0.12%) Hadoop YARN
Vendors
1 455 (7.75%) Microsoft
2 316 (5.39%) Oracle
3 180 (3.07%) Adobe
4 162 (2.76%) Google
5 110 (1.87%) ServiceNow
6 91 (1.55%) Salesforce.com
7 75 (1.28%) Splunk
8 61 (1.04%) Apigee
8 61 (1.04%) IBM
9 50 (0.85%) SAP
9 50 (0.85%) Sitecore
10 44 (0.75%) Sybase
11 40 (0.68%) Atlassian
12 34 (0.58%) New Relic
13 33 (0.56%) hybris
14 32 (0.55%) VMware
15 31 (0.53%) AppDynamics
16 30 (0.51%) TIBCO
17 27 (0.46%) MuleSoft
17 27 (0.46%) Red Hat