Period
to 17 February 2018

The following table provides summary statistics for contract job vacancies advertised in the City of 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 17 February 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)
Central London > City of London
6 months to
17 Feb 2018
Same period 2017 Same period 2016
Rank 8 8 10
Rank change year-on-year 0 +2 +2
Contract jobs citing JavaScript 972 788 670
As % of all contract IT jobs advertised in the City of London 13.77% 12.79% 9.94%
As % of the Programming Languages category 25.76% 25.54% 21.21%
Number of daily rates quoted 836 688 572
City of London median daily rate £500 £475 £450
Median daily rate % change year-on-year +5.26% +5.56% +5.88%
10th Percentile £361 £325 £313
90th Percentile £638 £625 £599
Central London median daily rate £493 £467 £438
% change year-on-year +5.57% +6.63% +6.06%
Number of hourly rates quoted 1 0 4
City of London median hourly rate £27.09 - £40.66
10th Percentile £25.66 - £21.40
90th Percentile £28.52 - £60.00
Central London median hourly rate £27.09 - £40.66

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 the City of London with a requirement for coding skills.

All Programming Languages
City of London
Contract vacancies with a requirement for coding skills 3,773 3,085 3,159
As % of all contract IT jobs advertised in the City of London 53.45% 50.09% 46.85%
Number of daily rates quoted 3,218 2,593 2,672
City of London median daily rate £525 £488 £475
Median daily rate % change year-on-year +7.69% +2.63% +5.56%
10th Percentile £363 £325 £313
90th Percentile £700 £663 £663
Central London median daily rate £513 £475 £475
% change year-on-year +7.89% - +5.56%
Number of hourly rates quoted 13 8 17
City of London median hourly rate £21.50 £27.50 £29.64
Median hourly rate % change year-on-year -21.82% -7.22% +25.14%
10th Percentile £17.25 £16.90 £19.25
90th Percentile £44.60 £50.31 £57.00
Central London median hourly rate £21.50 £27.50 £29.64
% change year-on-year -21.82% -7.22% +42.84%

JavaScript
Job Vacancy Trend in the City of London

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

Job vacancy trend for JavaScript in the City of London

JavaScript
Contractor Daily Rate Trend in the City of London

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

Contractor daily rate trend for JavaScript in the City of London

JavaScript
Contractor Daily Rate Histogram in the City of London

The daily rate distribution of IT jobs citing JavaScript in the City of London over the 6 months to 17 February 2018.

Contractor daily rate histogram for JavaScript in the City of London

JavaScript
Contractor Hourly Rate Trend in the City of London

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

Contractor hourly rate trend for JavaScript in the City of London

JavaScript
Contract Job Locations in the City of 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 City of London region over the 6 months to 17 February 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
London Bridge 0 6 £425 +13.33%
Moorgate - 1 - -
JavaScript
Central London

For the 6 months to 17 February 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 City of London region with a requirement for JavaScript.

1 519 (53.40%) HTML
2 436 (44.86%) CSS
3 418 (43.00%) Agile Software Development
4 359 (36.93%) Java
5 326 (33.54%) AngularJS
6 321 (33.02%) React
7 304 (31.28%) HTML5
8 281 (28.91%) TDD
9 269 (27.67%) Finance
10 261 (26.85%) Node.js
11 218 (22.43%) C#
12 210 (21.60%) .NET
13 179 (18.42%) SQL
14 174 (17.90%) Front End Development
15 167 (17.18%) Git (software)
16 164 (16.87%) Banking
17 161 (16.56%) BDD
18 160 (16.46%) CSS3
19 152 (15.64%) Web Services
20 140 (14.40%) MVC
20 140 (14.40%) RESTful
21 138 (14.20%) jQuery
21 138 (14.20%) SQL Server
22 126 (12.96%) Amazon AWS
23 125 (12.86%) ES6
24 124 (12.76%) Scrum
24 124 (12.76%) Redux
25 118 (12.14%) E-Commerce
26 117 (12.04%) Continuous Integration
26 117 (12.04%) Web Development

JavaScript
Co-occurring IT Skills in the City of 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 33 (3.40%) CMS
2 23 (2.37%) Drupal
3 22 (2.26%) Cloud Foundry
3 22 (2.26%) Elasticsearch
4 20 (2.06%) Apache
5 18 (1.85%) SharePoint
6 15 (1.54%) Apache Solr
7 13 (1.34%) Confluence
8 12 (1.23%) Tomcat
8 12 (1.23%) WordPress
9 11 (1.13%) Apache Spark
9 11 (1.13%) WebSphere
10 9 (0.93%) JBoss
11 8 (0.82%) SharePoint 2013
12 7 (0.72%) MQSeries
13 6 (0.62%) Adobe Experience Manager
13 6 (0.62%) WildFly
14 5 (0.51%) Umbraco
15 4 (0.41%) IIS
16 3 (0.31%) nginx
Applications
1 12 (1.23%) Microsoft Excel
2 10 (1.03%) Adobe Creative Suite
3 9 (0.93%) OmniGraffle
3 9 (0.93%) Photoshop
4 5 (0.51%) Microsoft PowerPoint
5 3 (0.31%) Microsoft Office
6 2 (0.21%) Adobe Illustrator
6 2 (0.21%) InVision
7 1 (0.10%) InfoPath
7 1 (0.10%) Microsoft Project
7 1 (0.10%) MS Visio
7 1 (0.10%) Spreadsheet
Business Applications
1 21 (2.16%) Dynamics CRM
2 11 (1.13%) Payment Gateway
3 6 (0.62%) Magento
4 2 (0.21%) Adobe Campaign
5 1 (0.10%) Distributed Ledger
5 1 (0.10%) Salesforce.com CRM
5 1 (0.10%) WebTrends
Cloud Services
1 126 (12.96%) Amazon AWS
2 62 (6.38%) Microsoft Azure
3 46 (4.73%) npm
4 20 (2.06%) Heroku
5 14 (1.44%) GitHub
6 13 (1.34%) PaaS
7 11 (1.13%) SaaS
8 9 (0.93%) Office 365
9 8 (0.82%) Google Analytics
10 7 (0.72%) Adobe Analytics
10 7 (0.72%) Google Cloud Platform
10 7 (0.72%) Serverless
11 6 (0.62%) Cloud Computing
11 6 (0.62%) Yarn
12 5 (0.51%) Dynamics 365
12 5 (0.51%) Google Play
13 4 (0.41%) Adobe Creative Cloud
13 4 (0.41%) Amazon Kinesis
13 4 (0.41%) Amazon S3
13 4 (0.41%) Amazon SQS
Communications & Networking
1 31 (3.19%) HTTP
2 21 (2.16%) SSL
3 18 (1.85%) DNS
3 18 (1.85%) Firewall
4 17 (1.75%) FTP
5 16 (1.65%) TCP/IP
6 12 (1.23%) Internet
7 9 (0.93%) Intranet
8 5 (0.51%) Network Security
9 3 (0.31%) SSH
10 2 (0.21%) DHCP
10 2 (0.21%) DKIM
10 2 (0.21%) DMARC
10 2 (0.21%) Ethernet
10 2 (0.21%) HTTPS
10 2 (0.21%) Unified Communications
10 2 (0.21%) VPLS
10 2 (0.21%) VPN
10 2 (0.21%) Wireshark
11 1 (0.10%) SMTP
Database & Business Intelligence
1 138 (14.20%) SQL Server
2 72 (7.41%) MongoDB
2 72 (7.41%) NoSQL
3 59 (6.07%) MySQL
4 45 (4.63%) PostgreSQL
5 40 (4.12%) Relational Database
6 27 (2.78%) Big Data
7 21 (2.16%) Redis
8 20 (2.06%) SQL Server Reporting Services
9 17 (1.75%) RDBMS
10 16 (1.65%) Amazon DynamoDB
10 16 (1.65%) Apache Cassandra
11 14 (1.44%) Hadoop
11 14 (1.44%) SQL Server Integration Services
12 13 (1.34%) SQL Server 2008
13 10 (1.03%) SQL Server Analysis Services
14 8 (0.82%) Apache Hive
15 7 (0.72%) DB2
15 7 (0.72%) Power BI
16 6 (0.62%) InterSystems Cache
Development Applications
1 167 (17.18%) Git (software)
2 86 (8.85%) Jenkins
3 62 (6.38%) gulp
3 62 (6.38%) webpack
4 56 (5.76%) Selenium
5 55 (5.66%) JIRA
6 48 (4.94%) Jasmine
7 46 (4.73%) Cucumber
8 42 (4.32%) TeamCity
9 36 (3.70%) Grunt
10 34 (3.50%) Babel
11 32 (3.29%) Maven
12 31 (3.19%) Mocha
13 28 (2.88%) Sonatype Nexus
14 27 (2.78%) Gradle
15 24 (2.47%) Visual Studio
16 22 (2.26%) Team Foundation Server
17 18 (1.85%) Spock
18 17 (1.75%) Gatling
18 17 (1.75%) Subversion
General
1 269 (27.67%) Finance
2 164 (16.87%) Banking
3 52 (5.35%) Investment Banking
4 42 (4.32%) Marketing
5 40 (4.12%) Retail
6 35 (3.60%) Games
7 30 (3.09%) Front Office
8 28 (2.88%) Legal
9 27 (2.78%) Telecoms
10 25 (2.57%) Law
11 12 (1.23%) Publishing
12 10 (1.03%) Advertising
12 10 (1.03%) Retail Banking
13 9 (0.93%) Financial Institution
14 5 (0.51%) Back Office
14 5 (0.51%) Music Industry
15 3 (0.31%) Digital Economy
15 3 (0.31%) Manufacturing
16 2 (0.21%) Billing
17 1 (0.10%) Corporate Banking
Job Titles
1 729 (75.00%) Developer
2 172 (17.70%) JavaScript Developer
3 137 (14.09%) Java Developer
4 114 (11.73%) React Developer
5 104 (10.70%) Front End Developer (Client-Side Developer)
6 99 (10.19%) Full Stack Developer
7 87 (8.95%) .NET Developer
8 76 (7.82%) C# Developer
9 70 (7.20%) Senior Developer
10 56 (5.76%) Angular Developer
11 49 (5.04%) C# .NET Developer
12 41 (4.22%) Agile Developer
13 40 (4.12%) Web Developer
14 38 (3.91%) HTML Developer
15 37 (3.81%) Java Engineer
16 35 (3.60%) Node.js Developer
17 33 (3.40%) DevOps Engineer
18 26 (2.67%) JavaScript Engineer
18 26 (2.67%) Python Developer
18 26 (2.67%) SQL Developer
Libraries, Frameworks & Software Standards
1 519 (53.40%) HTML
2 436 (44.86%) CSS
3 326 (33.54%) AngularJS
4 321 (33.02%) React
5 304 (31.28%) HTML5
6 261 (26.85%) Node.js
7 210 (21.60%) .NET
8 160 (16.46%) CSS3
9 152 (15.64%) Web Services
10 140 (14.40%) RESTful
11 138 (14.20%) jQuery
12 124 (12.76%) Redux
13 115 (11.83%) REST
14 95 (9.77%) Spring
15 92 (9.47%) ASP.NET
15 92 (9.47%) Sass
15 92 (9.47%) Twitter Bootstrap
16 83 (8.54%) SOAP
17 78 (8.02%) ASP.NET Web API
18 64 (6.58%) XML
Miscellaneous
1 99 (10.19%) Greenfield Project
2 80 (8.23%) Mobile App
2 80 (8.23%) User Experience
3 53 (5.45%) Fintech
4 35 (3.60%) Analytical Skills
5 21 (2.16%) Foreign Exchange (FX)
6 19 (1.95%) Enterprise Software
6 19 (1.95%) Virtual Team
7 18 (1.85%) Linux Command Line
8 17 (1.75%) Computer Science
9 14 (1.44%) iPad
10 13 (1.34%) Data Structures
10 13 (1.34%) Hedge funds
11 12 (1.23%) Algorithms
11 12 (1.23%) Fixed Income
12 11 (1.13%) Derivative
12 11 (1.13%) Equities
13 8 (0.82%) Credit Risk
13 8 (0.82%) RIA
13 8 (0.82%) Video on Demand
Operating Systems
1 92 (9.47%) Linux
2 52 (5.35%) Unix
3 42 (4.32%) Windows
4 27 (2.78%) Android
5 24 (2.47%) Apple iOS
6 9 (0.93%) Red Hat Enterprise Linux
7 7 (0.72%) Windows Server
8 3 (0.31%) Mac OS
8 3 (0.31%) Mac OS X
8 3 (0.31%) VMS
9 2 (0.21%) Windows Server 2008
10 1 (0.10%) Windows Server 2012
Processes & Methodologies
1 418 (43.00%) Agile Software Development
2 281 (28.91%) TDD
3 174 (17.90%) Front End Development
4 161 (16.56%) BDD
5 140 (14.40%) MVC
6 124 (12.76%) Scrum
7 118 (12.14%) E-Commerce
8 117 (12.04%) Continuous Integration
8 117 (12.04%) Web Development
9 87 (8.95%) Microservices
10 84 (8.64%) DevOps
10 84 (8.64%) OO
11 81 (8.33%) Software Engineering
12 76 (7.82%) Test Automation
13 61 (6.28%) Unit Testing
14 49 (5.04%) Pair Programming
15 43 (4.42%) Analytics
16 42 (4.32%) SDLC
17 41 (4.22%) API Development
17 41 (4.22%) Open Source
Programming Languages
1 359 (36.93%) Java
2 218 (22.43%) C#
3 179 (18.42%) SQL
4 125 (12.86%) ES6
5 80 (8.23%) Python
6 75 (7.72%) TypeScript
7 69 (7.10%) PHP
8 46 (4.73%) Ruby
9 36 (3.70%) C++
10 34 (3.50%) Groovy
11 31 (3.19%) Scala
12 25 (2.57%) T-SQL
13 23 (2.37%) PL/SQL
14 19 (1.95%) Bash Shell
15 12 (1.23%) Go
15 12 (1.23%) Objective-C
16 11 (1.13%) VB.NET
17 9 (0.93%) GraphQL
17 9 (0.93%) Perl
18 8 (0.82%) PowerShell
Qualifications
1 19 (1.95%) Degree
2 8 (0.82%) Computer Science Degree
3 7 (0.72%) Security Cleared
4 6 (0.62%) Microsoft Certification
5 5 (0.51%) SC Cleared
6 3 (0.31%) MCP
6 3 (0.31%) MCPD
7 2 (0.21%) Master's Degree
8 1 (0.10%) CEH
8 1 (0.10%) CISSP
8 1 (0.10%) IBM Certification
8 1 (0.10%) MCSE
8 1 (0.10%) Numerate Degree
8 1 (0.10%) OSCP
8 1 (0.10%) PhD
8 1 (0.10%) VMware Certified Professional (VCP)
Quality Assurance & Compliance
1 65 (6.69%) QA
2 6 (0.62%) ISO/IEC 27001
2 6 (0.62%) MiFID
3 5 (0.51%) Data Quality
4 3 (0.31%) WCAG
5 1 (0.10%) GCP
5 1 (0.10%) Solvency II
System Software
1 102 (10.49%) Docker
2 16 (1.65%) Active Directory
3 5 (0.51%) Varnish
4 3 (0.31%) Apache ZooKeeper
4 3 (0.31%) etcd
4 3 (0.31%) Virtual Machines
5 2 (0.21%) VMware Infrastructure
6 1 (0.10%) VMware ESXi
6 1 (0.10%) vSphere
Systems Management
1 31 (3.19%) Ansible
2 28 (2.88%) Docker Swarm
2 28 (2.88%) Opscode Chef
3 27 (2.78%) Kubernetes
4 21 (2.16%) Puppet
5 9 (0.93%) Terraform
6 7 (0.72%) Single Sign-On
7 3 (0.31%) Consul
7 3 (0.31%) Grafana
8 2 (0.21%) Capistrano
8 2 (0.21%) Mesos
8 2 (0.21%) Nessus
8 2 (0.21%) WMI
9 1 (0.10%) Backup Exec
9 1 (0.10%) CA Service Virtualization
9 1 (0.10%) Kibana
9 1 (0.10%) logstash
9 1 (0.10%) Matomo
9 1 (0.10%) Norton AntiVirus
9 1 (0.10%) SCCM
Vendors
1 89 (9.16%) Microsoft
2 34 (3.50%) Adobe
3 24 (2.47%) Apigee
4 23 (2.37%) Google
5 21 (2.16%) Oracle
5 21 (2.16%) Salesforce.com
6 20 (2.06%) Splunk
7 13 (1.34%) AppDynamics
7 13 (1.34%) ServiceNow
8 11 (1.13%) IBM
9 9 (0.93%) New Relic
10 6 (0.62%) Apple
10 6 (0.62%) Red Hat
11 5 (0.51%) Demandware
11 5 (0.51%) FXall
11 5 (0.51%) Reuters
11 5 (0.51%) Sybase
11 5 (0.51%) Zend
12 4 (0.41%) Cypress Semiconductor
12 4 (0.41%) DevExpress