Period
to 19 November 2017

The following table provides summary statistics for contract job vacancies advertised in Hertfordshire 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 19 November 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)
East of England > Hertfordshire
6 months to
19 Nov 2017
Same period 2016 Same period 2015
Rank 15 20 10
Rank change year-on-year +5 -10 +2
Contract jobs citing JavaScript 133 88 153
As % of all contract IT jobs advertised in Hertfordshire 8.58% 6.37% 9.42%
As % of the Programming Languages category 22.32% 17.39% 26.84%
Number of daily rates quoted 101 35 102
Hertfordshire median daily rate £400 £375 £363
Median daily rate % change year-on-year +6.67% +3.45% -3.33%
10th Percentile £300 £263 £240
90th Percentile £545 £500 £500
East of England median daily rate £375 £375 £360
% change year-on-year - +4.17% +2.13%
Number of hourly rates quoted 1 2 0
Hertfordshire median hourly rate £15.00 £45.00 -
Median hourly rate % change year-on-year -66.67% - -
East of England median hourly rate £62.50 £36.00 £37.75
% change year-on-year +73.61% -4.64% +16.65%

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 Hertfordshire with a requirement for coding skills.

All Programming Languages
Hertfordshire
Contract vacancies with a requirement for coding skills 596 506 570
As % of all contract IT jobs advertised in Hertfordshire 38.43% 36.64% 35.10%
Number of daily rates quoted 315 292 274
Hertfordshire median daily rate £425 £385 £375
Median daily rate % change year-on-year +10.39% +2.67% +7.14%
10th Percentile £283 £231 £262
90th Percentile £588 £538 £500
East of England median daily rate £400 £375 £375
% change year-on-year +6.67% - +3.45%
Number of hourly rates quoted 22 28 32
Hertfordshire median hourly rate £17.15 £49.75 £33.25
Median hourly rate % change year-on-year -65.52% +49.62% +66.25%
10th Percentile £13.65 £33.37 £13.68
90th Percentile £43.75 £54.35 £42.40
East of England median hourly rate £40.50 £40.00 £37.50
% change year-on-year +1.25% +6.67% +0.67%

JavaScript
Job Vacancy Trend in Hertfordshire

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

Job vacancy trend for JavaScript in Hertfordshire

JavaScript
Contractor Daily Rate Trend in Hertfordshire

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

Contractor daily rate trend for JavaScript in Hertfordshire

JavaScript
Contractor Daily Rate Histogram in Hertfordshire

The daily rate distribution of IT jobs citing JavaScript in Hertfordshire over the 6 months to 19 November 2017.

Contractor daily rate histogram for JavaScript in Hertfordshire

JavaScript
Contractor Hourly Rate Trend in Hertfordshire

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

Contractor hourly rate trend for JavaScript in Hertfordshire

JavaScript
Contract Job Locations in Hertfordshire

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing JavaScript within the Hertfordshire region over the 6 months to 19 November 2017. 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
Watford +2 42 £390 +4.00% 14
Rickmansworth +5 10 £390 +11.43% 2
Letchworth +3 10 £388 +19.23% 4
Hemel Hempstead +10 9 £350 - 9
Hatfield - 9 £400 - 5
Welwyn Garden City +2 5 £525 -4.55%
Borehamwood +1 5 £275 -26.67%
Stevenage -6 4 - - 2
St Albans -3 2 £390 +11.43% 6
Hertford - 2 £319 - 2
Waltham Cross - 1 £563 -
JavaScript
East of England

For the 6 months to 19 November 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 Hertfordshire region with a requirement for JavaScript.

1 97 (72.93%) HTML
2 84 (63.16%) CSS
3 61 (45.86%) .NET
4 50 (37.59%) MVC
5 47 (35.34%) C#
6 46 (34.59%) Java
7 41 (30.83%) Agile Software Development
8 40 (30.08%) HTML5
9 37 (27.82%) jQuery
9 37 (27.82%) SQL
10 35 (26.32%) AngularJS
11 33 (24.81%) ASP.NET
12 31 (23.31%) Web Services
13 30 (22.56%) SQL Server
14 28 (21.05%) Finance
15 27 (20.30%) Git (software)
16 25 (18.80%) XML
17 23 (17.29%) JSON
18 22 (16.54%) Web Development
19 20 (15.04%) Spring
19 20 (15.04%) Oracle
20 19 (14.29%) RESTful
20 19 (14.29%) CSS3
21 18 (13.53%) ASP.NET Web API
21 18 (13.53%) Front End Development
21 18 (13.53%) OO
21 18 (13.53%) Microsoft
21 18 (13.53%) Scrum
21 18 (13.53%) WCF
22 17 (12.78%) .NET Framework

JavaScript
Co-occurring IT Skills in Hertfordshire 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 15 (11.28%) WebSphere
2 14 (10.53%) SharePoint
3 10 (7.52%) IIS
4 5 (3.76%) Apache
4 5 (3.76%) CMS
5 4 (3.01%) WebSphere Application Server
6 3 (2.26%) nginx
7 2 (1.50%) K2 blackpearl
7 2 (1.50%) SharePoint 2013
7 2 (1.50%) Sitecore CMS
7 2 (1.50%) Tomcat
7 2 (1.50%) Umbraco
8 1 (0.75%) Adobe Experience Manager
8 1 (0.75%) Elasticsearch
8 1 (0.75%) MQSeries
8 1 (0.75%) NServiceBus
8 1 (0.75%) Oracle SOA Suite
8 1 (0.75%) SharePoint 2010
Applications
1 2 (1.50%) Microsoft Excel
2 1 (0.75%) Microsoft Office
Business Applications
1 6 (4.51%) Magento
2 5 (3.76%) Dynamics CRM
3 2 (1.50%) SAP HCM
4 1 (0.75%) Maximo
Cloud Services
1 11 (8.27%) Amazon AWS
2 5 (3.76%) Microsoft Azure
3 4 (3.01%) SaaS
4 3 (2.26%) Office 365
5 2 (1.50%) Boomi
5 2 (1.50%) SuccessFactors
6 1 (0.75%) Amazon EC2
6 1 (0.75%) Amazon SQS
Communications & Networking
1 6 (4.51%) Internet
2 5 (3.76%) HTTP
3 3 (2.26%) Firewall
3 3 (2.26%) SSL
4 2 (1.50%) SMS
4 2 (1.50%) TCP/IP
4 2 (1.50%) Wi-Fi
5 1 (0.75%) DNS
5 1 (0.75%) Ethernet
5 1 (0.75%) HTTPS
5 1 (0.75%) IMAP
5 1 (0.75%) SMTP
Database & Business Intelligence
1 30 (22.56%) SQL Server
2 17 (12.78%) MySQL
3 16 (12.03%) MongoDB
4 9 (6.77%) Relational Database
5 8 (6.02%) SQL Server Reporting Services
6 7 (5.26%) Sybase ASE
7 6 (4.51%) PostgreSQL
8 5 (3.76%) SQL Server 2008
9 4 (3.01%) NoSQL
9 4 (3.01%) RDBMS
9 4 (3.01%) Redis
9 4 (3.01%) SQL Server 2012
10 3 (2.26%) SQL Server 2005
10 3 (2.26%) SQL Server 2014
10 3 (2.26%) SQL Server Integration Services
11 2 (1.50%) Oracle Database
11 2 (1.50%) Oracle Reports
12 1 (0.75%) Apache Cassandra
12 1 (0.75%) MS Access
12 1 (0.75%) SAP Data Services
Development Applications
1 27 (20.30%) Git (software)
2 12 (9.02%) Visual Studio
3 11 (8.27%) Team Foundation Server
4 10 (7.52%) Subversion
5 8 (6.02%) Grunt
5 8 (6.02%) gulp
6 7 (5.26%) webpack
7 6 (4.51%) IntelliJ
8 5 (3.76%) JUnit
9 4 (3.01%) Bitbucket
9 4 (3.01%) Eclipse
9 4 (3.01%) JIRA
9 4 (3.01%) Maven
9 4 (3.01%) Visual Studio Team System
10 3 (2.26%) FxCop
10 3 (2.26%) Jenkins
10 3 (2.26%) Moq
10 3 (2.26%) PHPUnit
10 3 (2.26%) StyleCop
10 3 (2.26%) Vagrant
General
1 28 (21.05%) Finance
2 7 (5.26%) Retail
3 5 (3.76%) Automotive
4 3 (2.26%) Games
4 3 (2.26%) Interactive Media
5 2 (1.50%) Publishing
5 2 (1.50%) Telecoms
6 1 (0.75%) Advertising
6 1 (0.75%) Aerospace
6 1 (0.75%) Back Office
6 1 (0.75%) French Language
6 1 (0.75%) Front Office
6 1 (0.75%) Legal
6 1 (0.75%) Marketing
6 1 (0.75%) Military
Job Titles
1 115 (86.47%) Developer
2 30 (22.56%) Java Developer
3 27 (20.30%) .NET Developer
4 18 (13.53%) Lead Developer
5 13 (9.77%) Lead .NET Developer
6 12 (9.02%) .NET Team Leader
6 12 (9.02%) Senior Developer
6 12 (9.02%) Team Leader
7 11 (8.27%) Front End Developer (Client-Side Developer)
7 11 (8.27%) JavaScript Developer
8 9 (6.77%) Full Stack Developer
9 8 (6.02%) .NET Development Team Leader
9 8 (6.02%) Development Team Leader
9 8 (6.02%) SQL Developer
10 7 (5.26%) C# Developer
10 7 (5.26%) PHP Developer
10 7 (5.26%) Senior .NET Developer
11 5 (3.76%) Consultant
11 5 (3.76%) Node.js Developer
11 5 (3.76%) Web Developer
Libraries, Frameworks & Software Standards
1 97 (72.93%) HTML
2 84 (63.16%) CSS
3 61 (45.86%) .NET
4 40 (30.08%) HTML5
5 37 (27.82%) jQuery
6 35 (26.32%) AngularJS
7 33 (24.81%) ASP.NET
8 31 (23.31%) Web Services
9 25 (18.80%) XML
10 23 (17.29%) JSON
11 20 (15.04%) Spring
12 19 (14.29%) CSS3
12 19 (14.29%) RESTful
13 18 (13.53%) ASP.NET Web API
13 18 (13.53%) WCF
14 17 (12.78%) .NET Framework
14 17 (12.78%) Node.js
15 16 (12.03%) Ajax
15 16 (12.03%) REST
16 15 (11.28%) React
Miscellaneous
1 9 (6.77%) Mobile App
2 7 (5.26%) Computer Science
2 7 (5.26%) DataPower
2 7 (5.26%) Greenfield Project
3 5 (3.76%) User Experience
4 3 (2.26%) NHS
5 2 (1.50%) Linux Command Line
5 2 (1.50%) W3C
6 1 (0.75%) Analytical Skills
6 1 (0.75%) Clustering
6 1 (0.75%) FMCG
6 1 (0.75%) Management Information System
6 1 (0.75%) Robotics
6 1 (0.75%) Security Operations Centre
6 1 (0.75%) Web 2.0
Operating Systems
1 16 (12.03%) Linux
2 12 (9.02%) Windows
3 5 (3.76%) Unix
4 4 (3.01%) Windows Server
5 2 (1.50%) Android
5 2 (1.50%) Apple iOS
6 1 (0.75%) HPUX
6 1 (0.75%) Solaris
Processes & Methodologies
1 50 (37.59%) MVC
2 41 (30.83%) Agile Software Development
3 22 (16.54%) Web Development
4 18 (13.53%) Front End Development
4 18 (13.53%) OO
4 18 (13.53%) Scrum
5 17 (12.78%) TDD
6 15 (11.28%) Continuous Integration
6 15 (11.28%) E-Commerce
7 13 (9.77%) BDD
8 11 (8.27%) Refactoring
9 10 (7.52%) Mentoring
9 10 (7.52%) Software Engineering
9 10 (7.52%) SOLID
10 9 (6.77%) SOA
10 9 (6.77%) Test Automation
10 9 (6.77%) Web Application Development
11 8 (6.02%) Kanban
11 8 (6.02%) Open Source
11 8 (6.02%) Pair Programming
Programming Languages
1 47 (35.34%) C#
2 46 (34.59%) Java
3 37 (27.82%) SQL
4 14 (10.53%) PHP
4 14 (10.53%) T-SQL
5 9 (6.77%) Ruby
6 7 (5.26%) Groovy
7 6 (4.51%) PowerShell
8 5 (3.76%) C++
8 5 (3.76%) Python
8 5 (3.76%) VBScript
9 4 (3.01%) Perl
10 3 (2.26%) ES6
10 3 (2.26%) PHP 5
10 3 (2.26%) PHP 7
10 3 (2.26%) Scala
10 3 (2.26%) Shell Script
10 3 (2.26%) VB.NET
11 2 (1.50%) Kotlin
11 2 (1.50%) VBA
Qualifications
1 7 (5.26%) Degree
2 5 (3.76%) Security Cleared
3 4 (3.01%) Computer Science Degree
4 2 (1.50%) HND
5 1 (0.75%) SC Cleared
Quality Assurance & Compliance
1 10 (7.52%) QA
2 2 (1.50%) Sarbanes-Oxley
3 1 (0.75%) SLA
System Software
1 3 (2.26%) Docker
1 3 (2.26%) Virtual Desktop
Systems Management
1 7 (5.26%) WebSphere Cast Iron
2 4 (3.01%) Ansible
3 3 (2.26%) Symantec Endpoint Protection
4 1 (0.75%) Data Guard
4 1 (0.75%) Puppet
4 1 (0.75%) ThinApp
Vendors
1 20 (15.04%) Oracle
2 18 (13.53%) Microsoft
3 11 (8.27%) IBM
4 8 (6.02%) Zend
5 7 (5.26%) Sybase
6 6 (4.51%) New Relic
7 5 (3.76%) hybris
8 4 (3.01%) SAP
8 4 (3.01%) VMware
9 3 (2.26%) Atlassian
9 3 (2.26%) EMC
9 3 (2.26%) FireEye
9 3 (2.26%) Intel
9 3 (2.26%) McAfee
9 3 (2.26%) Sitecore
9 3 (2.26%) Symantec
10 2 (1.50%) Dell
10 2 (1.50%) Nintex
11 1 (0.75%) Apple
11 1 (0.75%) ATG