Period
to 14 November 2019

The following table provides summary statistics for contract job vacancies advertised in Central 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 14 November 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)
London > Central London
6 months to
14 Nov 2019
Same period 2018 Same period 2017
Rank 8 5 8
Rank change year-on-year -3 +3 0
Contract jobs citing JavaScript 970 1,391 1,184
As % of all contract IT jobs advertised in Central London 12.98% 15.10% 13.92%
As % of the Programming Languages category 26.10% 28.15% 27.22%
Number of daily rates quoted 783 1,155 979
Central London median daily rate £525 £500 £476
Median daily rate % change year-on-year +5.00% +5.15% +5.67%
10th Percentile £363 £361 £325
90th Percentile £638 £638 £638
London median daily rate £525 £500 £475
% change year-on-year +5.00% +5.26% +5.56%
Number of hourly rates quoted 1 1 1
Central London median hourly rate £48.50 £19.00 £27.09
Median hourly rate % change year-on-year +155.26% -29.86% -
10th Percentile £44.75 £18.50 £25.66
90th Percentile £52.25 £19.50 £28.52
London median hourly rate £50.00 £36.00 £27.00
% change year-on-year +38.89% +33.33% -32.58%

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 Central London with a requirement for coding skills.

All Programming Languages
Central London
Contract vacancies with a requirement for coding skills 3,717 4,942 4,350
As % of all contract IT jobs advertised in Central London 49.73% 53.65% 51.16%
Number of daily rates quoted 2,975 4,061 3,558
Central London median daily rate £525 £525 £513
Median daily rate % change year-on-year - +2.44% +7.89%
10th Percentile £375 £365 £363
90th Percentile £675 £675 £675
London median daily rate £525 £525 £500
% change year-on-year - +5.00% +8.11%
Number of hourly rates quoted 12 9 20
Central London median hourly rate £31.50 £37.09 £22.99
Median hourly rate % change year-on-year -15.07% +61.31% -16.39%
10th Percentile £21.02 £16.90 £13.35
90th Percentile £55.18 £63.70 £45.80
London median hourly rate £45.25 £37.09 £35.50
% change year-on-year +22.00% +4.48% +0.67%

JavaScript
Job Vacancy Trend in Central London

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

Job vacancy trend for JavaScript in Central London

JavaScript
Contractor Daily Rate Trend in Central London

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

Contractor daily rate trend for JavaScript in Central London

JavaScript
Contractor Daily Rate Histogram in Central London

The daily rate distribution of IT jobs citing JavaScript in Central London over the 6 months to 14 November 2019.

Contractor daily rate histogram for JavaScript in Central London

JavaScript
Contractor Hourly Rate Trend in Central London

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

Contractor hourly rate trend for JavaScript in Central London

JavaScript
Contract Job Locations in Central 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 Central London region over the 6 months to 14 November 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
City of London -2 696 £525 +5.00% 463
Southwark +2 32 £525 +5.00% 2
City of Westminster 0 27 £440 -20.00% 2
West End of London -2 25 £388 -29.55% 2
Camden 0 3 £450 -5.26% 1
Kensington and Chelsea -3 2 £275 -15.38%
JavaScript
London

For the 6 months to 14 November 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 Central London region with a requirement for JavaScript.

1 452 (46.60%) Agile Software Development
2 402 (41.44%) HTML
3 383 (39.48%) CSS
4 353 (36.39%) React
5 261 (26.91%) AngularJS
6 255 (26.29%) TDD
7 249 (25.67%) Java
8 237 (24.43%) Node.js
9 221 (22.78%) C#
10 211 (21.75%) Front End Development
11 194 (20.00%) .NET
12 185 (19.07%) Finance
13 163 (16.80%) SQL
14 160 (16.49%) HTML5
14 160 (16.49%) TypeScript
15 159 (16.39%) Microservices
16 154 (15.88%) Azure
17 153 (15.77%) DevOps
18 152 (15.67%) AWS
19 146 (15.05%) Redux
20 133 (13.71%) Python
21 128 (13.20%) Git (software)
22 116 (11.96%) MVC
23 111 (11.44%) Test Automation
24 110 (11.34%) Scrum
25 108 (11.13%) Docker
26 107 (11.03%) SQL Server
27 102 (10.52%) Web Development
28 101 (10.41%) CSS3
29 100 (10.31%) User Experience

JavaScript
Co-occurring IT Skills in Central 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 40 (4.12%) CMS
2 33 (3.40%) SharePoint
3 27 (2.78%) Elasticsearch
4 23 (2.37%) IIS
5 21 (2.16%) Confluence
6 19 (1.96%) Apache
7 16 (1.65%) JBoss
8 11 (1.13%) Apache Spark
9 10 (1.03%) Adobe Experience Manager
10 9 (0.93%) Drupal
10 9 (0.93%) GeoServer
10 9 (0.93%) MS Exchange
10 9 (0.93%) WordPress
11 8 (0.82%) ArcGIS
11 8 (0.82%) Umbraco
12 7 (0.72%) Appian
12 7 (0.72%) WebLogic
12 7 (0.72%) WebSphere
13 6 (0.62%) Cloud Foundry
13 6 (0.62%) SharePoint Server
Applications
1 10 (1.03%) Microsoft Excel
2 6 (0.62%) Photoshop
3 5 (0.52%) Microsoft PowerPoint
4 4 (0.41%) Microsoft Office
5 3 (0.31%) InDesign
5 3 (0.31%) Sketch
6 2 (0.21%) InVision
7 1 (0.10%) Adobe Illustrator
7 1 (0.10%) Marvel
7 1 (0.10%) MS Visio
7 1 (0.10%) Spreadsheet
7 1 (0.10%) Zeplin
Business Applications
1 27 (2.78%) Dynamics CRM
2 4 (0.41%) Magento
2 4 (0.41%) Remedy ITSM
3 3 (0.31%) Adobe Campaign
4 2 (0.21%) BusinessWorks
4 2 (0.21%) Distributed Ledger
4 2 (0.21%) Oracle Cash Management
4 2 (0.21%) R3 Corda
4 2 (0.21%) SAP Oil and Gas
4 2 (0.21%) Shopify
5 1 (0.10%) Dynamics AX
5 1 (0.10%) SDL Web 8
5 1 (0.10%) SessionCam
5 1 (0.10%) Social Studio
5 1 (0.10%) WebTrends
Cloud Services
1 154 (15.88%) Azure
2 152 (15.67%) AWS
3 57 (5.88%) GCP
4 39 (4.02%) GitHub
5 28 (2.89%) Serverless
6 19 (1.96%) Cloud Computing
6 19 (1.96%) npm
7 18 (1.86%) AWS Lambda
7 18 (1.86%) Dynamics 365
8 16 (1.65%) PaaS
9 15 (1.55%) Amazon EC2
9 15 (1.55%) Amazon SQS
10 14 (1.44%) Amazon S3
11 13 (1.34%) SaaS
12 12 (1.24%) Heroku
12 12 (1.24%) Office 365
12 12 (1.24%) Power Platform
13 11 (1.13%) Adobe Analytics
13 11 (1.13%) OpenShift
14 10 (1.03%) Amazon Kinesis
Communications & Networking
1 12 (1.24%) HTTP
2 11 (1.13%) Firewall
3 6 (0.62%) Intranet
4 5 (0.52%) FTP
5 4 (0.41%) VPN
6 3 (0.31%) DNS
6 3 (0.31%) Internet
6 3 (0.31%) SSH
6 3 (0.31%) SSL
6 3 (0.31%) TCP/IP
7 2 (0.21%) Peer-to-Peer Networking
7 2 (0.21%) SMTP
8 1 (0.10%) HTTPS
8 1 (0.10%) Intrusion Detection
Database & Business Intelligence
1 107 (11.03%) SQL Server
2 51 (5.26%) NoSQL
3 48 (4.95%) MongoDB
4 47 (4.85%) PostgreSQL
5 46 (4.74%) MySQL
6 22 (2.27%) Relational Database
7 16 (1.65%) Big Data
7 16 (1.65%) SQL Server Integration Services
8 15 (1.55%) Neo4j
9 12 (1.24%) Amazon DynamoDB
9 12 (1.24%) Hadoop
10 10 (1.03%) Apache Cassandra
10 10 (1.03%) Geospatial Data
11 9 (0.93%) Amazon RDS
11 9 (0.93%) GIS
11 9 (0.93%) Power BI
11 9 (0.93%) SQL Server Reporting Services
12 8 (0.82%) Data Warehouse
12 8 (0.82%) Oracle Database
12 8 (0.82%) QGIS
Development Applications
1 128 (13.20%) Git (software)
2 67 (6.91%) Jenkins
3 53 (5.46%) webpack
4 47 (4.85%) JIRA
5 44 (4.54%) Visual Studio
6 39 (4.02%) Selenium
7 36 (3.71%) Cucumber
8 31 (3.20%) gulp
8 31 (3.20%) Team Foundation Server
9 27 (2.78%) Mocha
9 27 (2.78%) TeamCity
10 25 (2.58%) Bitbucket
11 23 (2.37%) Atlassian Bamboo
12 21 (2.16%) Maven
12 21 (2.16%) Subversion
13 20 (2.06%) Grunt
13 20 (2.06%) Jasmine
14 18 (1.86%) JUnit
15 17 (1.75%) CircleCI
16 15 (1.55%) Moq
General
1 185 (19.07%) Finance
2 65 (6.70%) Banking
3 46 (4.74%) Public Sector
4 37 (3.81%) Front Office
5 28 (2.89%) Marketing
6 23 (2.37%) Law
6 23 (2.37%) Retail
7 19 (1.96%) Investment Banking
8 17 (1.75%) Advertising
9 9 (0.93%) Telecoms
10 7 (0.72%) Games
11 6 (0.62%) Financial Institution
11 6 (0.62%) Legal
12 5 (0.52%) Manufacturing
12 5 (0.52%) Publishing
13 4 (0.41%) Automotive
13 4 (0.41%) Back Office
13 4 (0.41%) Electronics
14 3 (0.31%) Police
15 2 (0.21%) Aerospace
Job Titles
1 742 (76.49%) Developer
2 194 (20.00%) React Developer
3 143 (14.74%) JavaScript Developer
4 132 (13.61%) Front End Developer (Client-Side Developer)
5 121 (12.47%) Full Stack Developer
6 106 (10.93%) Senior Developer
7 70 (7.22%) Java Developer
8 66 (6.80%) Angular Developer
9 64 (6.60%) .NET Developer
10 58 (5.98%) C# Developer
11 45 (4.64%) Node.js Developer
12 36 (3.71%) Senior React Developer
13 34 (3.51%) Python Developer
14 30 (3.09%) Architect
15 28 (2.89%) Web Developer
16 22 (2.27%) Analyst
16 22 (2.27%) DevOps Engineer
17 21 (2.16%) Senior Full Stack Developer
17 21 (2.16%) UI Developer
18 20 (2.06%) Software Developer
Libraries, Frameworks & Software Standards
1 402 (41.44%) HTML
2 383 (39.48%) CSS
3 353 (36.39%) React
4 261 (26.91%) AngularJS
5 237 (24.43%) Node.js
6 194 (20.00%) .NET
7 160 (16.49%) HTML5
8 146 (15.05%) Redux
9 101 (10.41%) CSS3
10 100 (10.31%) ASP.NET
11 97 (10.00%) REST
12 90 (9.28%) jQuery
13 77 (7.94%) .NET Framework
13 77 (7.94%) Web Services
14 76 (7.84%) Spring
15 75 (7.73%) RESTful
16 68 (7.01%) XML
17 63 (6.49%) JSON
18 60 (6.19%) ASP.NET MVC
19 58 (5.98%) Twitter Bootstrap
Miscellaneous
1 100 (10.31%) User Experience
2 84 (8.66%) Greenfield Project
3 45 (4.64%) Analytical Skills
4 40 (4.12%) Mobile App
5 30 (3.09%) Data Structures
6 29 (2.99%) Algorithms
7 23 (2.37%) Enterprise Software
8 16 (1.65%) Hedge funds
8 16 (1.65%) Public Cloud
8 16 (1.65%) W3C
9 11 (1.13%) Derivative
9 11 (1.13%) Foreign Exchange (FX)
9 11 (1.13%) Management Information System
10 9 (0.93%) Driving Licence
10 9 (0.93%) Self-Motivation
11 8 (0.82%) Fixed Income
11 8 (0.82%) Virtual Team
12 7 (0.72%) Equities
12 7 (0.72%) iPad
13 6 (0.62%) Cloud Native
Operating Systems
1 88 (9.07%) Linux
2 40 (4.12%) Windows
3 22 (2.27%) Unix
4 16 (1.65%) Apple iOS
5 13 (1.34%) Android
6 11 (1.13%) Red Hat Enterprise Linux
6 11 (1.13%) Ubuntu
7 9 (0.93%) Mac OS X
8 8 (0.82%) Debian
8 8 (0.82%) Windows Server
9 6 (0.62%) openSUSE
10 4 (0.41%) CentOS
10 4 (0.41%) Windows 10
11 3 (0.31%) Solaris
12 2 (0.21%) CoreOS
12 2 (0.21%) VMS
13 1 (0.10%) Windows Server 2008
13 1 (0.10%) Windows Server 2012
Processes & Methodologies
1 452 (46.60%) Agile Software Development
2 255 (26.29%) TDD
3 211 (21.75%) Front End Development
4 159 (16.39%) Microservices
5 153 (15.77%) DevOps
6 116 (11.96%) MVC
7 111 (11.44%) Test Automation
8 110 (11.34%) Scrum
9 102 (10.52%) Web Development
10 97 (10.00%) BDD
11 91 (9.38%) Software Engineering
12 80 (8.25%) E-Commerce
13 77 (7.94%) Continuous Integration
14 69 (7.11%) OO
15 59 (6.08%) SDLC
16 58 (5.98%) Unit Testing
17 54 (5.57%) Computer Science
18 47 (4.85%) Kanban
19 45 (4.64%) Problem-Solving
20 44 (4.54%) Analytics
Programming Languages
1 249 (25.67%) Java
2 221 (22.78%) C#
3 163 (16.80%) SQL
4 160 (16.49%) TypeScript
5 133 (13.71%) Python
6 80 (8.25%) ES6
7 49 (5.05%) Ruby
8 47 (4.85%) PHP
9 31 (3.20%) Go
10 27 (2.78%) Java 8
11 25 (2.58%) Scala
12 21 (2.16%) PowerShell
13 17 (1.75%) Kotlin
14 15 (1.55%) Perl
15 11 (1.13%) C++
15 11 (1.13%) Groovy
15 11 (1.13%) T-SQL
16 10 (1.03%) Shell Script
17 8 (0.82%) Bash Shell
18 7 (0.72%) Clojure
Qualifications
1 61 (6.29%) Degree
2 50 (5.15%) Security Cleared
3 42 (4.33%) SC Cleared
4 22 (2.27%) Computer Science Degree
5 8 (0.82%) DV Cleared
6 7 (0.72%) Numerate Degree
7 6 (0.62%) HND
7 6 (0.62%) Master's Degree
8 5 (0.52%) BPSS Clearance
8 5 (0.52%) ISTQB
9 2 (0.21%) AWS Certification
9 2 (0.21%) CISSP
10 1 (0.10%) DBS Check
10 1 (0.10%) ISEB
Quality Assurance & Compliance
1 35 (3.61%) QA
2 20 (2.06%) WCAG
3 8 (0.82%) NIST
4 6 (0.62%) COBIT
4 6 (0.62%) ISO/IEC 27001
5 4 (0.41%) Data Quality
5 4 (0.41%) GDPR
6 2 (0.21%) NIST 800
6 2 (0.21%) SLA
7 1 (0.10%) PCI DSS
System Software
1 108 (11.13%) Docker
2 6 (0.62%) Virtual Machines
3 5 (0.52%) Active Directory
4 2 (0.21%) Varnish
5 1 (0.10%) Firmware
Systems Management
1 51 (5.26%) Kubernetes
2 50 (5.15%) Terraform
3 19 (1.96%) Ansible
4 9 (0.93%) Single Sign-On
5 8 (0.82%) Puppet
6 6 (0.62%) Grafana
6 6 (0.62%) Nessus
7 5 (0.52%) HP Fortify
7 5 (0.52%) ITRS Geneos
7 5 (0.52%) MIIS
8 4 (0.41%) Docker Swarm
8 4 (0.41%) Graphite
8 4 (0.41%) Nagios
8 4 (0.41%) Opscode Chef
8 4 (0.41%) ZABBIX
9 3 (0.31%) Salt
10 2 (0.21%) Consul
10 2 (0.21%) Control-M
10 2 (0.21%) Kibana
Vendors
1 73 (7.53%) Microsoft
2 52 (5.36%) Oracle
3 49 (5.05%) Google
4 28 (2.89%) Adobe
5 18 (1.86%) ServiceNow
6 17 (1.75%) Atlassian
7 14 (1.44%) Cypress Semiconductor
7 14 (1.44%) Splunk
8 9 (0.93%) New Relic
8 9 (0.93%) Perforce
8 9 (0.93%) Red Hat
8 9 (0.93%) Salesforce.com
8 9 (0.93%) Sitecore
9 8 (0.82%) ESRI
9 8 (0.82%) SAP
10 6 (0.62%) WSO2
11 5 (0.52%) IBM
11 5 (0.52%) Qualys
11 5 (0.52%) Tableau
11 5 (0.52%) Tealium