Period
to 23 October 2017

The following table provides summary statistics for contract job vacancies advertised in Slough 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 23 October 2017 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)
Berkshire > Slough
6 months to
23 Oct 2017
Same period 2016 Same period 2015
Rank 7 23 15
Rank change year-on-year +16 -8 +4
Contract jobs citing JavaScript 33 17 34
As % of all contract IT jobs advertised in Slough 11.15% 5.28% 6.67%
As % of the Programming Languages category 34.02% 17.35% 27.20%
Number of daily rates quoted 26 13 37
Slough median daily rate £400 £325 £313
Median daily rate % change year-on-year +23.08% +4.00% -5.30%
10th Percentile £313 £302 £250
90th Percentile £538 £380 £400
Berkshire median daily rate £395 £375 £375
% change year-on-year +5.33% - +3.45%
Number of hourly rates quoted 0 0 3
Slough median hourly rate - - £25.00
Berkshire median hourly rate £35.00 £35.00 £31.00
% change year-on-year - +12.90% +63.16%

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 Slough with a requirement for coding skills.

All Programming Languages
Slough
Contract vacancies with a requirement for coding skills 97 98 125
As % of all contract IT jobs advertised in Slough 32.77% 30.43% 24.51%
Number of daily rates quoted 70 66 92
Slough median daily rate £400 £338 £325
Median daily rate % change year-on-year +18.52% +3.85% -1.52%
10th Percentile £303 £272 £246
90th Percentile £525 £450 £425
Berkshire median daily rate £400 £400 £375
% change year-on-year - +6.67% -
Number of hourly rates quoted 0 2 4
Slough median hourly rate - £38.50 £30.75
Median hourly rate % change year-on-year - +25.20% -5.38%
Berkshire median hourly rate £19.66 £25.00 £37.00
% change year-on-year -21.36% -32.43% -7.50%

JavaScript
Job Vacancy Trend in Slough

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

Job vacancy trend for JavaScript in Slough

JavaScript
Contractor Daily Rate Trend in Slough

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

Contractor daily rate trend for JavaScript in Slough

JavaScript
Contractor Daily Rate Histogram in Slough

The daily rate distribution of IT jobs citing JavaScript in Slough over the 6 months to 23 October 2017.

Contractor daily rate histogram for JavaScript in Slough

JavaScript
Contractor Hourly Rate Trend in Slough

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

Contractor hourly rate trend for JavaScript in Slough

For the 6 months to 23 October 2017, 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 Slough region with a requirement for JavaScript.

1 23 (69.70%) HTML
2 21 (63.64%) CSS
3 17 (51.52%) jQuery
4 15 (45.45%) HTML5
5 14 (42.42%) SQL
6 13 (39.39%) CSS3
7 12 (36.36%) MySQL
8 11 (33.33%) Java
9 10 (30.30%) C#
9 10 (30.30%) Relational Database
9 10 (30.30%) User Experience
10 9 (27.27%) Linux
11 8 (24.24%) Windows
11 8 (24.24%) XML
11 8 (24.24%) Git (software)
11 8 (24.24%) AngularJS
12 7 (21.21%) Sass
12 7 (21.21%) Software Engineering
12 7 (21.21%) Python
12 7 (21.21%) CMS
13 6 (18.18%) Photoshop
13 6 (18.18%) SaaS
13 6 (18.18%) Twitter Bootstrap
13 6 (18.18%) Front End Development
14 5 (15.15%) Grunt
14 5 (15.15%) LESS
14 5 (15.15%) Node.js
14 5 (15.15%) Axure RP
14 5 (15.15%) MongoDB
14 5 (15.15%) Visualisation

JavaScript
Co-occurring IT Skills in Slough 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 7 (21.21%) CMS
2 1 (3.03%) Apache
2 1 (3.03%) EPiServer
2 1 (3.03%) WordPress
Applications
1 6 (18.18%) Photoshop
2 5 (15.15%) Adobe Illustrator
3 4 (12.12%) MS Visio
Cloud Services
1 6 (18.18%) SaaS
2 4 (12.12%) Microsoft Azure
3 3 (9.09%) Cloud Computing
4 2 (6.06%) npm
5 1 (3.03%) Adobe Analytics
5 1 (3.03%) Amazon AWS
5 1 (3.03%) Force.com
5 1 (3.03%) GitHub
5 1 (3.03%) Google Analytics
5 1 (3.03%) Rackspace Cloud
Communications & Networking
1 4 (12.12%) Internet
1 4 (12.12%) VPN
Database & Business Intelligence
1 12 (36.36%) MySQL
2 10 (30.30%) Relational Database
3 5 (15.15%) MongoDB
4 4 (12.12%) Big Data
4 4 (12.12%) Oracle Database
4 4 (12.12%) Oracle Database 10g
4 4 (12.12%) Oracle Database 11g
4 4 (12.12%) Pentaho
4 4 (12.12%) SQL Server
5 1 (3.03%) MonetDB
5 1 (3.03%) NoSQL
5 1 (3.03%) PostgreSQL
Development Applications
1 8 (24.24%) Git (software)
2 5 (15.15%) Axure RP
2 5 (15.15%) Grunt
3 4 (12.12%) Dreamweaver
3 4 (12.12%) gulp
3 4 (12.12%) Oracle APEX
3 4 (12.12%) Subversion
3 4 (12.12%) Visual Studio
4 2 (6.06%) JIRA
4 2 (6.06%) PHPUnit
5 1 (3.03%) Jenkins
5 1 (3.03%) webpack
Job Titles
1 25 (75.76%) Developer
2 13 (39.39%) Front End Developer (Client-Side Developer)
3 7 (21.21%) JavaScript Developer
4 6 (18.18%) Software Developer
4 6 (18.18%) Web Developer
5 5 (15.15%) Angular Developer
6 4 (12.12%) E-Commerce Developer
6 4 (12.12%) Front End Web Developer (Client-Side Developer)
6 4 (12.12%) Full Stack Developer
6 4 (12.12%) Linux Engineer
6 4 (12.12%) Oracle Developer
6 4 (12.12%) Senior Linux Engineer
7 3 (9.09%) C# Developer
7 3 (9.09%) E-Commerce Web Developer
7 3 (9.09%) Linux Systems Engineer
7 3 (9.09%) Senior Linux Systems Engineer
7 3 (9.09%) Senior Systems Engineer
7 3 (9.09%) Systems Engineer
7 3 (9.09%) Website Developer
8 2 (6.06%) PHP Web Applications Developer
Libraries, Frameworks & Software Standards
1 23 (69.70%) HTML
2 21 (63.64%) CSS
3 17 (51.52%) jQuery
4 15 (45.45%) HTML5
5 13 (39.39%) CSS3
6 8 (24.24%) AngularJS
6 8 (24.24%) XML
7 7 (21.21%) Sass
8 6 (18.18%) Twitter Bootstrap
9 5 (15.15%) .NET
9 5 (15.15%) ASP.NET
9 5 (15.15%) LESS
9 5 (15.15%) Node.js
10 4 (12.12%) .NET Framework
10 4 (12.12%) Entity Framework
10 4 (12.12%) Hibernate
10 4 (12.12%) JSON
10 4 (12.12%) LAMP
10 4 (12.12%) Silverlight
10 4 (12.12%) SVG
Miscellaneous
1 10 (30.30%) User Experience
2 4 (12.12%) Animation
2 4 (12.12%) Computer Science
3 2 (6.06%) Analytical Skills
4 1 (3.03%) Cloud Native
4 1 (3.03%) Greenfield Project
4 1 (3.03%) Mobile App
Operating Systems
1 9 (27.27%) Linux
2 8 (24.24%) Windows
3 4 (12.12%) CentOS
3 4 (12.12%) Red Hat Enterprise Linux
3 4 (12.12%) Windows Server
3 4 (12.12%) Windows Server 2003
3 4 (12.12%) Windows XP
4 1 (3.03%) Ubuntu
Processes & Methodologies
1 7 (21.21%) Software Engineering
2 6 (18.18%) Front End Development
3 5 (15.15%) MVC
3 5 (15.15%) TDD
3 5 (15.15%) Visualisation
4 4 (12.12%) Agile Software Development
4 4 (12.12%) Analytics
4 4 (12.12%) Data Analytics
4 4 (12.12%) Data Modelling
4 4 (12.12%) E-Commerce
4 4 (12.12%) Logistics
4 4 (12.12%) OO
4 4 (12.12%) Web Design
5 3 (9.09%) Configuration Management
5 3 (9.09%) ITIL
5 3 (9.09%) ITIL V3
5 3 (9.09%) OOD
5 3 (9.09%) OOP
6 2 (6.06%) Project Management
6 2 (6.06%) Test Automation
Programming Languages
1 14 (42.42%) SQL
2 11 (33.33%) Java
3 10 (30.30%) C#
4 7 (21.21%) Python
5 4 (12.12%) Perl
5 4 (12.12%) PHP
5 4 (12.12%) PL/SQL
6 2 (6.06%) Ruby
7 1 (3.03%) Apex Code
7 1 (3.03%) ES6
7 1 (3.03%) Kotlin
7 1 (3.03%) SOQL
7 1 (3.03%) TypeScript
Qualifications
1 5 (15.15%) Degree
2 4 (12.12%) Computer Science Degree
Quality Assurance & Compliance
1 4 (12.12%) QA
System Software
1 3 (9.09%) Docker
Systems Management
1 4 (12.12%) Nagios
1 4 (12.12%) ZABBIX
2 1 (3.03%) Ansible
2 1 (3.03%) Opscode Chef
Vendors
1 4 (12.12%) Demandware
1 4 (12.12%) Oracle
2 2 (6.06%) Zend
3 1 (3.03%) ClickTale
3 1 (3.03%) Rackspace
3 1 (3.03%) Salesforce.com