Period
to 25 September 2018

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 25 September 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)
Berkshire > Slough
6 months to
25 Sep 2018
Same period 2017 Same period 2016
Rank 8 7 29
Rank change year-on-year -1 +22 -12
Contract jobs citing JavaScript 32 34 12
As % of all contract IT jobs advertised in Slough 9.58% 11.53% 3.87%
As % of the Programming Languages category 28.32% 34.34% 13.48%
Number of daily rates quoted 30 28 13
Slough median daily rate £400 £400 £350
Median daily rate % change year-on-year - +14.29% +18.64%
10th Percentile £350 £313 £313
90th Percentile £500 £533 £375
Berkshire median daily rate £400 £400 £375
% change year-on-year - +6.67% +7.14%
Number of hourly rates quoted 0 0 0
Slough median hourly rate - - -
Berkshire median hourly rate £30.00 £45.00 £35.00
% change year-on-year -33.33% +28.57% +40.00%

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 113 99 89
As % of all contract IT jobs advertised in Slough 33.83% 33.56% 28.71%
Number of daily rates quoted 82 73 59
Slough median daily rate £425 £400 £350
Median daily rate % change year-on-year +6.25% +14.29% -
10th Percentile £244 £307 £275
90th Percentile £543 £525 £450
Berkshire median daily rate £420 £400 £400
% change year-on-year +5.00% - +6.67%
Number of hourly rates quoted 0 0 1
Slough median hourly rate - - £38.50
Berkshire median hourly rate £30.00 £19.66 £13.75
% change year-on-year +52.59% +42.98% -61.27%

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 25 September 2018.

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 25 September 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 Slough region with a requirement for JavaScript.

1 18 (56.25%) PHP
2 16 (50.00%) HTML
2 16 (50.00%) CSS
3 15 (46.88%) Front End Development
4 12 (37.50%) E-Commerce
4 12 (37.50%) Magento
5 11 (34.38%) OO
6 10 (31.25%) Finance
7 9 (28.13%) HTML5
7 9 (28.13%) CSS3
7 9 (28.13%) OO PHP
7 9 (28.13%) SOAP
8 8 (25.00%) jQuery
9 7 (21.88%) Linux
9 7 (21.88%) Sass
9 7 (21.88%) Elasticsearch
9 7 (21.88%) REST
9 7 (21.88%) RESTful
9 7 (21.88%) Problem-Solving
10 6 (18.75%) React
10 6 (18.75%) MySQL
10 6 (18.75%) Agile Software Development
11 5 (15.63%) TDD
11 5 (15.63%) Symfony
11 5 (15.63%) Drupal
11 5 (15.63%) React Native
11 5 (15.63%) Mobile App
11 5 (15.63%) PHPUnit
12 4 (12.50%) Git (software)
12 4 (12.50%) Mobile Application Development

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 (21.88%) Elasticsearch
2 5 (15.63%) Drupal
3 2 (6.25%) Apache
3 2 (6.25%) WordPress
4 1 (3.13%) Apache Solr
4 1 (3.13%) Apache Spark
Business Applications
1 12 (37.50%) Magento
2 3 (9.38%) Payment Gateway
Cloud Services
1 1 (3.13%) Amazon AWS
1 1 (3.13%) Force.com
Communications & Networking
1 2 (6.25%) DNS
1 2 (6.25%) HTTP
2 1 (3.13%) Broadband
2 1 (3.13%) HTTPS
Database & Business Intelligence
1 6 (18.75%) MySQL
2 1 (3.13%) Apache Cassandra
2 1 (3.13%) Big Data
2 1 (3.13%) Blockchain
2 1 (3.13%) MongoDB
2 1 (3.13%) Neo4j
2 1 (3.13%) NoSQL
2 1 (3.13%) Redis
2 1 (3.13%) SQL Server
2 1 (3.13%) SQL Server 2012
Development Applications
1 5 (15.63%) PHPUnit
2 4 (12.50%) Git (software)
General
1 10 (31.25%) Finance
2 2 (6.25%) Telecoms
3 1 (3.13%) Banking
3 1 (3.13%) Games
3 1 (3.13%) Investment Banking
3 1 (3.13%) Legal
3 1 (3.13%) Marketing
3 1 (3.13%) Publishing
Job Titles
1 25 (78.13%) Developer
2 12 (37.50%) Magento Developer
3 10 (31.25%) Front End Developer (Client-Side Developer)
4 5 (15.63%) React Developer
5 3 (9.38%) Drupal Developer
5 3 (9.38%) E-Commerce Developer
5 3 (9.38%) Full Stack Developer
5 3 (9.38%) PHP Developer
5 3 (9.38%) PHP Magento Developer
6 2 (6.25%) 2nd Line Support
6 2 (6.25%) Backend Developer
6 2 (6.25%) JavaScript Developer
6 2 (6.25%) Software Engineer
6 2 (6.25%) Web Developer
6 2 (6.25%) WordPress Developer
7 1 (3.13%) 2nd Line Engineer
7 1 (3.13%) Full Stack Web Developer
7 1 (3.13%) HTML CSS Developer
7 1 (3.13%) Node.js Developer
7 1 (3.13%) QA Test Engineer
Libraries, Frameworks & Software Standards
1 16 (50.00%) CSS
1 16 (50.00%) HTML
2 9 (28.13%) CSS3
2 9 (28.13%) HTML5
2 9 (28.13%) SOAP
3 8 (25.00%) jQuery
4 7 (21.88%) REST
4 7 (21.88%) RESTful
4 7 (21.88%) Sass
5 6 (18.75%) React
6 5 (15.63%) React Native
6 5 (15.63%) Symfony
7 4 (12.50%) LESS
8 3 (9.38%) KnockoutJS
8 3 (9.38%) LAMP
8 3 (9.38%) LEMP Stack
8 3 (9.38%) Node.js
8 3 (9.38%) Twitter Bootstrap
8 3 (9.38%) Web Services
8 3 (9.38%) XML
Miscellaneous
1 5 (15.63%) Mobile App
2 3 (9.38%) Analytical Skills
3 2 (6.25%) Data Centre
4 1 (3.13%) Greenfield Project
4 1 (3.13%) Machine to Machine
4 1 (3.13%) NHS
4 1 (3.13%) Over-the-Top Content
Operating Systems
1 7 (21.88%) Linux
2 2 (6.25%) CentOS
2 2 (6.25%) Red Hat Enterprise Linux
2 2 (6.25%) Solaris
2 2 (6.25%) Unix
3 1 (3.13%) Android
3 1 (3.13%) Apple iOS
3 1 (3.13%) Ubuntu
Processes & Methodologies
1 15 (46.88%) Front End Development
2 12 (37.50%) E-Commerce
3 11 (34.38%) OO
4 9 (28.13%) OO PHP
5 7 (21.88%) Problem-Solving
6 6 (18.75%) Agile Software Development
7 5 (15.63%) TDD
8 4 (12.50%) Mobile Application Development
9 3 (9.38%) ERP
9 3 (9.38%) OOP
9 3 (9.38%) Web Development
10 2 (6.25%) Business Intelligence
10 2 (6.25%) Root Cause Analysis
10 2 (6.25%) Scrum
10 2 (6.25%) Software Engineering
11 1 (3.13%) Analytics
11 1 (3.13%) Anomaly Detection
11 1 (3.13%) Coaching
11 1 (3.13%) Market Research
11 1 (3.13%) Test Automation
Programming Languages
1 18 (56.25%) PHP
2 3 (9.38%) Perl
3 2 (6.25%) Python
4 1 (3.13%) Apex Code
4 1 (3.13%) Apple Swift
4 1 (3.13%) C
4 1 (3.13%) C#
4 1 (3.13%) Java
4 1 (3.13%) SOQL
4 1 (3.13%) SQL
4 1 (3.13%) TypeScript
Quality Assurance & Compliance
1 3 (9.38%) PCI DSS
2 2 (6.25%) SLA
3 1 (3.13%) QA
System Software
1 2 (6.25%) NFS
1 2 (6.25%) Virtual Machines
1 2 (6.25%) VMware ESXi
1 2 (6.25%) VMware Infrastructure
2 1 (3.13%) Docker
Systems Management
1 2 (6.25%) Puppet
2 1 (3.13%) Kubernetes
Vendors
1 3 (9.38%) Twitter
2 2 (6.25%) Citrix
2 2 (6.25%) NetApp
2 2 (6.25%) Oracle
2 2 (6.25%) Red Hat
2 2 (6.25%) Tekelec
2 2 (6.25%) VMware
3 1 (3.13%) Microsoft
3 1 (3.13%) Rackspace
3 1 (3.13%) Salesforce.com
3 1 (3.13%) Sandvine