Period
to 21 April 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 21 April 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
21 Apr 2019
Same period 2018 Same period 2017
Rank 6 7 8
Rank change year-on-year +1 +1 0
Contract jobs citing JavaScript 5,651 5,824 4,898
As % of all contract IT jobs advertised in London 13.38% 12.61% 12.21%
As % of the Programming Languages category 28.04% 26.05% 26.67%
Number of daily rates quoted 4,395 4,582 3,785
London median daily rate £500 £500 £450
Median daily rate % change year-on-year - +11.11% +2.86%
10th Percentile £358 £356 £319
90th Percentile £650 £638 £608
England median daily rate £475 £450 £425
% change year-on-year +5.56% +5.88% +6.25%
Number of hourly rates quoted 27 41 18
London median hourly rate £36.00 £27.00 £38.88
Median hourly rate % change year-on-year +33.33% -30.56% +21.14%
10th Percentile £30.30 £17.52 £16.70
90th Percentile £56.50 £47.50 £64.75
England median hourly rate £50.00 £39.50 £40.00
% change year-on-year +26.58% -1.25% +17.65%

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 20,155 22,358 18,366
As % of all contract IT jobs advertised in London 47.72% 48.40% 45.78%
Number of daily rates quoted 15,195 17,077 13,685
London median daily rate £525 £500 £475
Median daily rate % change year-on-year +5.00% +5.26% +3.26%
10th Percentile £363 £356 £325
90th Percentile £675 £675 £650
England median daily rate £480 £475 £438
% change year-on-year +1.05% +8.57% +2.94%
Number of hourly rates quoted 127 216 123
London median hourly rate £35.00 £35.00 £44.00
Median hourly rate % change year-on-year - -20.45% +69.23%
10th Percentile £19.57 £17.64 £18.10
90th Percentile £53.75 £53.75 £57.20
England median hourly rate £42.50 £40.00 £41.00
% change year-on-year +6.25% -2.44% +5.13%

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 21 April 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 21 April 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 21 April 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 +1 1,264 £500 - 301
West London -1 263 £450 -5.26% 111
South London +6 172 £450 -5.26% 24
East London -7 122 £525 +5.00% 50
North London +16 34 £400 -20.00% 15
JavaScript
England

For the 6 months to 21 April 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 2,749 (48.65%) HTML
2 2,747 (48.61%) Agile Software Development
3 2,400 (42.47%) CSS
4 1,779 (31.48%) React
5 1,761 (31.16%) AngularJS
6 1,527 (27.02%) Node.js
7 1,437 (25.43%) Java
8 1,340 (23.71%) TDD
9 1,220 (21.59%) HTML5
10 1,085 (19.20%) Front End Development
11 1,080 (19.11%) Finance
12 1,051 (18.60%) Git (software)
13 1,038 (18.37%) C#
14 1,024 (18.12%) .NET
15 964 (17.06%) SQL
16 896 (15.86%) Amazon AWS
17 841 (14.88%) Test Automation
18 838 (14.83%) Microservices
19 817 (14.46%) DevOps
20 773 (13.68%) MVC
21 752 (13.31%) BDD
22 750 (13.27%) Scrum
23 748 (13.24%) Microsoft Azure
24 738 (13.06%) REST
25 725 (12.83%) Redux
26 707 (12.51%) ES6
27 701 (12.40%) Python
28 697 (12.33%) Docker
29 671 (11.87%) CSS3
30 660 (11.68%) jQuery

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
1 247 (4.37%) CMS
2 214 (3.79%) Confluence
3 209 (3.70%) Elasticsearch
4 128 (2.27%) SharePoint
5 107 (1.89%) Apache
6 77 (1.36%) Adobe Experience Manager
7 69 (1.22%) Drupal
8 66 (1.17%) WordPress
9 63 (1.11%) Tomcat
10 57 (1.01%) WebSphere
11 42 (0.74%) Apache Spark
12 36 (0.64%) nginx
13 34 (0.60%) IIS
14 29 (0.51%) Umbraco
15 28 (0.50%) Cloud Foundry
15 28 (0.50%) JBoss
16 22 (0.39%) NServiceBus
17 21 (0.37%) Sitecore CMS
18 19 (0.34%) WebLogic
19 17 (0.30%) Apache Solr
Applications
1 93 (1.65%) Photoshop
2 38 (0.67%) Microsoft Excel
3 33 (0.58%) Adobe Illustrator
4 26 (0.46%) InVision
5 10 (0.18%) InfoPath
6 9 (0.16%) Adobe Creative Suite
6 9 (0.16%) Microsoft PowerPoint
7 8 (0.14%) Chatbot
8 7 (0.12%) UXPin
9 5 (0.088%) Fireworks
10 4 (0.071%) Adobe After Effects
10 4 (0.071%) Microsoft Office
10 4 (0.071%) Spreadsheet
11 3 (0.053%) GIMP
12 2 (0.035%) FreeHand
12 2 (0.035%) InDesign
12 2 (0.035%) MS Visio
12 2 (0.035%) OmniGraffle
13 1 (0.018%) SPSS
13 1 (0.018%) Stata
Business Applications
1 84 (1.49%) Dynamics CRM
2 35 (0.62%) Magento
3 9 (0.16%) Payment Gateway
4 7 (0.12%) Adobe Campaign
4 7 (0.12%) Distributed Ledger
4 7 (0.12%) Shopify
5 6 (0.11%) SAP ERP
6 5 (0.088%) Remedy ITSM
6 5 (0.088%) SAP Oil and Gas
7 4 (0.071%) Dynamics AX
7 4 (0.071%) Maximo
7 4 (0.071%) Oracle BPM
7 4 (0.071%) Salesforce.com CRM
7 4 (0.071%) SAP S/4HANA
7 4 (0.071%) SDL Web 8
8 3 (0.053%) NetSuite
9 2 (0.035%) Infor SunSystems
9 2 (0.035%) SAP Hybris
9 2 (0.035%) Temenos T24
9 2 (0.035%) WebTrends
Cloud Services
1 896 (15.86%) Amazon AWS
2 748 (13.24%) Microsoft Azure
3 258 (4.57%) Serverless
4 211 (3.73%) Google Cloud Platform
5 209 (3.70%) GitHub
6 169 (2.99%) AWS Lambda
7 136 (2.41%) npm
8 132 (2.34%) SaaS
9 105 (1.86%) PaaS
10 80 (1.42%) Amazon EC2
11 77 (1.36%) Amazon S3
12 62 (1.10%) Amazon SQS
13 61 (1.08%) Dynamics 365
13 61 (1.08%) Google Analytics
14 59 (1.04%) OpenShift
15 53 (0.94%) Adobe Analytics
16 51 (0.90%) Heroku
17 47 (0.83%) Office 365
18 39 (0.69%) AWS CloudFormation
19 36 (0.64%) Amazon Kinesis
Communications & Networking
1 134 (2.37%) HTTP
2 71 (1.26%) Internet
3 59 (1.04%) SSL
4 43 (0.76%) TCP/IP
5 36 (0.64%) DNS
6 30 (0.53%) FTP
7 29 (0.51%) Firewall
8 23 (0.41%) AMQP
9 13 (0.23%) Intranet
9 13 (0.23%) VPN
10 8 (0.14%) SAN
11 7 (0.12%) SSH
12 6 (0.11%) Skype
13 5 (0.088%) DKIM
13 5 (0.088%) DMARC
13 5 (0.088%) Kerberos
13 5 (0.088%) SMTP
14 4 (0.071%) DHCP
14 4 (0.071%) HTTPS
14 4 (0.071%) NAS
Database & Business Intelligence
1 577 (10.21%) SQL Server
2 433 (7.66%) NoSQL
3 362 (6.41%) MySQL
4 352 (6.23%) MongoDB
5 237 (4.19%) PostgreSQL
6 208 (3.68%) Relational Database
7 147 (2.60%) Apache Cassandra
8 146 (2.58%) Redis
9 123 (2.18%) Big Data
10 63 (1.11%) Amazon RDS
11 57 (1.01%) Hadoop
12 55 (0.97%) SQL Server Integration Services
13 51 (0.90%) Azure SQL Database
14 45 (0.80%) Amazon DynamoDB
15 41 (0.73%) Blockchain
16 39 (0.69%) RDBMS
17 37 (0.65%) Power BI
17 37 (0.65%) SQL Server Reporting Services
18 36 (0.64%) Amazon Redshift
18 36 (0.64%) Data Lake
Development Applications
1 1,051 (18.60%) Git (software)
2 615 (10.88%) Jenkins
3 403 (7.13%) JIRA
4 358 (6.34%) Selenium
5 277 (4.90%) gulp
6 263 (4.65%) webpack
7 259 (4.58%) Jasmine
8 227 (4.02%) Cucumber
9 217 (3.84%) Maven
10 208 (3.68%) Mocha
11 200 (3.54%) Grunt
12 171 (3.03%) Karma Test Runner
13 167 (2.96%) TeamCity
14 150 (2.65%) Subversion
15 137 (2.42%) Visual Studio
16 129 (2.28%) Bitbucket
17 121 (2.14%) Protractor
18 116 (2.05%) Visual Studio Team System
19 108 (1.91%) WebDriver
20 102 (1.80%) JUnit
General
1 1,080 (19.11%) Finance
2 518 (9.17%) Banking
3 226 (4.00%) Retail
4 192 (3.40%) Front Office
5 186 (3.29%) Marketing
6 90 (1.59%) Investment Banking
7 75 (1.33%) Games
8 64 (1.13%) Publishing
9 50 (0.88%) Legal
10 49 (0.87%) Advertising
11 45 (0.80%) Law
11 45 (0.80%) Telecoms
12 42 (0.74%) Financial Institution
13 33 (0.58%) Back Office
14 22 (0.39%) Manufacturing
15 21 (0.37%) Retail Banking
16 20 (0.35%) Automotive
17 18 (0.32%) Electronics
17 18 (0.32%) Pharmaceutical
18 8 (0.14%) French Language
Job Titles
1 4,279 (75.72%) Developer
2 935 (16.55%) JavaScript Developer
3 887 (15.70%) React Developer
4 789 (13.96%) Front End Developer (Client-Side Developer)
5 632 (11.18%) Full Stack Developer
6 466 (8.25%) Senior Developer
7 437 (7.73%) Angular Developer
8 413 (7.31%) Java Developer
9 410 (7.26%) .NET Developer
10 332 (5.88%) C# Developer
11 289 (5.11%) Node.js Developer
12 209 (3.70%) UI Developer
13 175 (3.10%) Python Developer
14 173 (3.06%) Architect
15 159 (2.81%) C# .NET Developer
16 143 (2.53%) AWS Developer
17 141 (2.50%) HTML Developer
18 138 (2.44%) Web Developer
19 136 (2.41%) JavaScript Engineer
20 126 (2.23%) Software Developer
Libraries, Frameworks & Software Standards
1 2,749 (48.65%) HTML
2 2,400 (42.47%) CSS
3 1,779 (31.48%) React
4 1,761 (31.16%) AngularJS
5 1,527 (27.02%) Node.js
6 1,220 (21.59%) HTML5
7 1,024 (18.12%) .NET
8 738 (13.06%) REST
9 725 (12.83%) Redux
10 671 (11.87%) CSS3
11 660 (11.68%) jQuery
12 620 (10.97%) Web Services
13 591 (10.46%) RESTful
14 524 (9.27%) Sass
15 460 (8.14%) ASP.NET
16 437 (7.73%) JSON
17 418 (7.40%) Spring
18 405 (7.17%) XML
19 401 (7.10%) Twitter Bootstrap
20 283 (5.01%) ASP.NET Web API
Miscellaneous
1 629 (11.13%) User Experience
2 441 (7.80%) Greenfield Project
3 363 (6.42%) Fintech
4 306 (5.41%) Mobile App
5 299 (5.29%) Analytical Skills
6 114 (2.02%) Data Structures
7 108 (1.91%) Hedge funds
8 98 (1.73%) Algorithms
9 85 (1.50%) Self-Motivation
10 67 (1.19%) Virtual Team
11 66 (1.17%) Fixed Income
12 59 (1.04%) Foreign Exchange (FX)
13 58 (1.03%) Enterprise Software
14 57 (1.01%) Video\Live Streaming
15 54 (0.96%) Social Media
15 54 (0.96%) Video on Demand
16 49 (0.87%) Linux Command Line
17 47 (0.83%) Equities
18 44 (0.78%) W3C
19 38 (0.67%) Cloud Native
Operating Systems
1 492 (8.71%) Linux
2 191 (3.38%) Windows
3 187 (3.31%) Apple iOS
4 178 (3.15%) Android
5 146 (2.58%) Unix
6 34 (0.60%) Windows Server
7 25 (0.44%) Mac OS X
8 20 (0.35%) Red Hat Enterprise Linux
9 19 (0.34%) Ubuntu
10 17 (0.30%) VMS
11 8 (0.14%) Windows Server 2012
12 7 (0.12%) CentOS
12 7 (0.12%) Windows 7
12 7 (0.12%) Windows Server 2008
13 6 (0.11%) Debian
14 5 (0.088%) Windows Vista
15 4 (0.071%) Kali Linux
15 4 (0.071%) Mac OS
15 4 (0.071%) Solaris
16 2 (0.035%) Windows 10
Processes & Methodologies
1 2,747 (48.61%) Agile Software Development
2 1,340 (23.71%) TDD
3 1,085 (19.20%) Front End Development
4 841 (14.88%) Test Automation
5 838 (14.83%) Microservices
6 817 (14.46%) DevOps
7 773 (13.68%) MVC
8 752 (13.31%) BDD
9 750 (13.27%) Scrum
10 571 (10.10%) Web Development
11 516 (9.13%) Continuous Integration
12 457 (8.09%) OO
13 437 (7.73%) E-Commerce
14 420 (7.43%) Software Engineering
15 394 (6.97%) Open Source
16 357 (6.32%) Problem-Solving
17 338 (5.98%) Analytics
18 294 (5.20%) Unit Testing
19 291 (5.15%) SDLC
20 278 (4.92%) Kanban
Programming Languages
1 1,437 (25.43%) Java
2 1,038 (18.37%) C#
3 964 (17.06%) SQL
4 707 (12.51%) ES6
5 701 (12.40%) Python
6 626 (11.08%) TypeScript
7 335 (5.93%) PHP
8 270 (4.78%) Ruby
9 235 (4.16%) Java 8
10 134 (2.37%) Scala
11 131 (2.32%) Go
12 116 (2.05%) T-SQL
13 110 (1.95%) PowerShell
14 109 (1.93%) C++
15 99 (1.75%) ES7
16 92 (1.63%) Bash Shell
17 78 (1.38%) Groovy
18 60 (1.06%) Perl
19 52 (0.92%) C
19 52 (0.92%) PL/SQL
Qualifications
1 237 (4.19%) Degree
2 181 (3.20%) Security Cleared
3 135 (2.39%) SC Cleared
4 60 (1.06%) Computer Science Degree
5 46 (0.81%) BPSS Clearance
6 21 (0.37%) Master's Degree
7 13 (0.23%) DBS Check
8 9 (0.16%) AWS Certification
8 9 (0.16%) CTC Cleared
9 8 (0.14%) Numerate Degree
10 7 (0.12%) CISM
10 7 (0.12%) CISMP
10 7 (0.12%) CISSP
11 6 (0.11%) CISA
11 6 (0.11%) ISO 27001 Lead Implementer
11 6 (0.11%) ISSMP
11 6 (0.11%) ISTQB
11 6 (0.11%) ITIL Certification
12 5 (0.088%) TOGAF Certification
13 4 (0.071%) DV Cleared
Quality Assurance & Compliance
1 329 (5.82%) QA
2 33 (0.58%) WCAG
3 26 (0.46%) Data Quality
4 18 (0.32%) Disclosure Scotland
5 9 (0.16%) GDPR
5 9 (0.16%) SLA
6 8 (0.14%) PCI DSS
7 7 (0.12%) GxP
7 7 (0.12%) PSD2
8 6 (0.11%) ISO/IEC 27001
8 6 (0.11%) WAI
9 4 (0.071%) Solvency II
10 3 (0.053%) Section 508
11 2 (0.035%) MiFID
12 1 (0.018%) COBIT
12 1 (0.018%) Dodd-Frank
12 1 (0.018%) EMIR
12 1 (0.018%) FATCA
12 1 (0.018%) HIPAA
12 1 (0.018%) ISO/IEC 20000
System Software
1 697 (12.33%) Docker
2 49 (0.87%) Active Directory
3 26 (0.46%) Virtual Machines
4 16 (0.28%) VMware Infrastructure
5 11 (0.19%) HDFS
6 8 (0.14%) XenApp
7 7 (0.12%) Apache ZooKeeper
7 7 (0.12%) OpenAM
7 7 (0.12%) OpenDJ
8 5 (0.088%) Microsoft App-V
9 4 (0.071%) Apache Flume
9 4 (0.071%) Hyper-V
10 3 (0.053%) VirtualBox
10 3 (0.053%) VMware NSX
10 3 (0.053%) vSphere
11 2 (0.035%) NFS
11 2 (0.035%) VMware ESXi
11 2 (0.035%) Xen
11 2 (0.035%) XenDesktop
12 1 (0.018%) Varnish
Systems Management
1 419 (7.41%) Kubernetes
2 199 (3.52%) Ansible
3 190 (3.36%) Terraform
4 115 (2.04%) Puppet
5 81 (1.43%) Opscode Chef
6 53 (0.94%) Kibana
7 46 (0.81%) Grafana
8 29 (0.51%) logstash
9 25 (0.44%) Docker Swarm
10 19 (0.34%) Single Sign-On
11 18 (0.32%) Mesos
12 17 (0.30%) Rancher
13 13 (0.23%) Consul
14 12 (0.21%) Graphite
14 12 (0.21%) Marathon
15 10 (0.18%) HP ALM
15 10 (0.18%) ZABBIX
16 8 (0.14%) SCCM
16 8 (0.14%) vRealize
16 8 (0.14%) vRealize Orchestrator
Vendors
1 397 (7.03%) Microsoft
2 311 (5.50%) Google
3 256 (4.53%) Oracle
4 190 (3.36%) Adobe
5 157 (2.78%) ServiceNow
6 112 (1.98%) Splunk
7 80 (1.42%) Salesforce.com
8 58 (1.03%) Cypress Semiconductor
9 37 (0.65%) MuleSoft
10 35 (0.62%) hybris
11 34 (0.60%) SAP
12 33 (0.58%) IBM
13 31 (0.55%) Tableau
14 29 (0.51%) Atlassian
14 29 (0.51%) Sitecore
15 25 (0.44%) VMware
16 24 (0.42%) Twitter
17 21 (0.37%) New Relic
18 20 (0.35%) Citrix
18 20 (0.35%) Facebook