Period
to 21 January 2018

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 21 January 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)
East of England > Hertfordshire
6 months to
21 Jan 2018
Same period 2017 Same period 2016
Rank 17 20 12
Rank change year-on-year +3 -8 +1
Contract jobs citing JavaScript 122 97 118
As % of all contract IT jobs advertised in Hertfordshire 8.04% 6.98% 8.36%
As % of the Programming Languages category 20.96% 18.73% 25.32%
Number of daily rates quoted 88 45 62
Hertfordshire median daily rate £400 £375 £350
Median daily rate % change year-on-year +6.67% +7.14% -6.67%
10th Percentile £313 £263 £216
90th Percentile £550 £530 £473
East of England median daily rate £375 £350 £360
% change year-on-year +7.14% -2.78% +2.86%
Number of hourly rates quoted 1 1 0
Hertfordshire median hourly rate £12.50 £45.00 -
Median hourly rate % change year-on-year -72.22% - -
East of England median hourly rate £62.50 £32.50 £42.25
% change year-on-year +92.31% -23.08% +14.62%

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 582 518 466
As % of all contract IT jobs advertised in Hertfordshire 38.34% 37.27% 33.03%
Number of daily rates quoted 313 308 225
Hertfordshire median daily rate £425 £400 £388
Median daily rate % change year-on-year +6.25% +3.23% +6.53%
10th Percentile £300 £250 £232
90th Percentile £588 £539 £550
East of England median daily rate £415 £375 £375
% change year-on-year +10.67% - -
Number of hourly rates quoted 16 33 31
Hertfordshire median hourly rate £24.50 £45.00 £39.00
Median hourly rate % change year-on-year -45.56% +15.38% +12.23%
10th Percentile £10.63 £36.25 £13.00
90th Percentile £43.75 £53.75 £52.25
East of England median hourly rate £40.50 £42.00 £39.00
% change year-on-year -3.57% +7.69% +4.00%

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 21 January 2018.

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 21 January 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
Watford -2 39 £425 +7.59% 20
Hatfield +6 11 £400 -23.81% 5
Letchworth +4 10 £388 +76.14% 1
Rickmansworth +9 9 £160 -54.29% 2
Hemel Hempstead +5 7 £338 -15.63% 19
Hertford 0 4 £375 - 4
Welwyn Garden City 0 4 £525 -4.55%
Borehamwood -4 4 £365 +21.67% 1
Stevenage -9 2 - - 5
St Albans - 2 £413 - 30
Waltham Cross - 1 £563 -
JavaScript
East of England

For the 6 months to 21 January 2018, 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 78 (63.93%) HTML
2 67 (54.92%) CSS
3 51 (41.80%) Java
4 48 (39.34%) .NET
5 45 (36.89%) Agile Software Development
6 41 (33.61%) MVC
7 36 (29.51%) C#
8 35 (28.69%) SQL
8 35 (28.69%) AngularJS
9 34 (27.87%) Web Services
10 32 (26.23%) jQuery
11 30 (24.59%) HTML5
12 29 (23.77%) Finance
13 25 (20.49%) XML
14 24 (19.67%) Git (software)
15 23 (18.85%) JSON
15 23 (18.85%) SQL Server
16 22 (18.03%) ASP.NET
17 21 (17.21%) Web Development
17 21 (17.21%) TDD
17 21 (17.21%) Spring
17 21 (17.21%) React
18 20 (16.39%) Ajax
19 19 (15.57%) Node.js
20 17 (13.93%) ASP.NET Web API
20 17 (13.93%) Amazon AWS
20 17 (13.93%) Oracle
21 16 (13.11%) Continuous Integration
22 15 (12.30%) Ruby
22 15 (12.30%) Linux

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 12 (9.84%) WebSphere
2 8 (6.56%) IIS
2 8 (6.56%) SharePoint
3 7 (5.74%) Apache
4 4 (3.28%) CMS
4 4 (3.28%) Oracle SOA Suite
5 3 (2.46%) nginx
6 2 (1.64%) SharePoint 2013
6 2 (1.64%) Tomcat
7 1 (0.82%) Adobe Experience Manager
7 1 (0.82%) Confluence
7 1 (0.82%) Drupal
7 1 (0.82%) Elasticsearch
7 1 (0.82%) MQSeries
7 1 (0.82%) NServiceBus
7 1 (0.82%) SharePoint 2010
7 1 (0.82%) WebSphere Application Server
Applications
1 1 (0.82%) Microsoft Office
1 1 (0.82%) Photoshop
Business Applications
1 5 (4.10%) Magento
2 2 (1.64%) Dynamics CRM
2 2 (1.64%) SAP Business ByDesign
2 2 (1.64%) SAP HCM
2 2 (1.64%) SAP Hybris
3 1 (0.82%) Maximo
Cloud Services
1 17 (13.93%) Amazon AWS
2 5 (4.10%) Microsoft Azure
3 4 (3.28%) GitHub
3 4 (3.28%) SaaS
4 3 (2.46%) Amazon SQS
5 2 (1.64%) Amazon EC2
5 2 (1.64%) Boomi
5 2 (1.64%) Heroku
5 2 (1.64%) Office 365
5 2 (1.64%) SuccessFactors
6 1 (0.82%) Amazon ElastiCache
6 1 (0.82%) Amazon S3
6 1 (0.82%) AWS CloudFormation
6 1 (0.82%) AWS Elastic Beanstalk
6 1 (0.82%) AWS Lambda
6 1 (0.82%) CloudFront
6 1 (0.82%) Route 53
6 1 (0.82%) Serverless
Communications & Networking
1 7 (5.74%) Internet
2 4 (3.28%) DNS
2 4 (3.28%) IMAP
2 4 (3.28%) SMTP
3 3 (2.46%) HTTP
4 2 (1.64%) Wi-Fi
5 1 (0.82%) HTTPS
5 1 (0.82%) SMS
5 1 (0.82%) TCP/IP
Database & Business Intelligence
1 23 (18.85%) SQL Server
2 12 (9.84%) Relational Database
3 11 (9.02%) MySQL
3 11 (9.02%) SQL Server 2008
4 10 (8.20%) MongoDB
5 7 (5.74%) PostgreSQL
5 7 (5.74%) Sybase ASE
6 5 (4.10%) NoSQL
7 4 (3.28%) Amazon DynamoDB
7 4 (3.28%) Redis
7 4 (3.28%) SQL Server 2012
7 4 (3.28%) SQL Server Reporting Services
8 3 (2.46%) RDBMS
8 3 (2.46%) SQL Server 2005
9 2 (1.64%) DB2
9 2 (1.64%) Oracle Reports
9 2 (1.64%) SQL Server Integration Services
10 1 (0.82%) Jackrabbit
10 1 (0.82%) Spotfire
10 1 (0.82%) SQL Server Analysis Services
Development Applications
1 24 (19.67%) Git (software)
2 12 (9.84%) Maven
2 12 (9.84%) Visual Studio
3 11 (9.02%) Grunt
3 11 (9.02%) gulp
3 11 (9.02%) webpack
4 9 (7.38%) Jenkins
4 9 (7.38%) Team Foundation Server
5 7 (5.74%) IntelliJ
5 7 (5.74%) Subversion
6 5 (4.10%) JUnit
7 4 (3.28%) Bitbucket
7 4 (3.28%) Eclipse
7 4 (3.28%) Hudson
7 4 (3.28%) JIRA
7 4 (3.28%) Mocha
7 4 (3.28%) Selenium
8 3 (2.46%) Protractor
8 3 (2.46%) Vagrant
9 2 (1.64%) Babel
General
1 29 (23.77%) Finance
2 9 (7.38%) Automotive
3 8 (6.56%) Retail
4 4 (3.28%) Marketing
5 3 (2.46%) Games
6 2 (1.64%) Telecoms
7 1 (0.82%) Advertising
7 1 (0.82%) Back Office
7 1 (0.82%) French Language
7 1 (0.82%) Front Office
7 1 (0.82%) Multimedia
7 1 (0.82%) Publishing
Job Titles
1 111 (90.98%) Developer
2 36 (29.51%) Java Developer
3 27 (22.13%) .NET Developer
4 17 (13.93%) Full Stack Developer
5 15 (12.30%) Lead Developer
6 14 (11.48%) JavaScript Developer
7 12 (9.84%) Senior Developer
8 10 (8.20%) Lead .NET Developer
9 9 (7.38%) .NET Team Leader
9 9 (7.38%) Team Leader
10 8 (6.56%) .NET Development Team Leader
10 8 (6.56%) C# Developer
10 8 (6.56%) Development Team Leader
11 7 (5.74%) Front End Developer (Client-Side Developer)
11 7 (5.74%) Senior .NET Developer
12 6 (4.92%) C# .NET Developer
12 6 (4.92%) SQL Developer
13 5 (4.10%) AWS Developer
14 4 (3.28%) Angular Developer
14 4 (3.28%) Magento Developer
Libraries, Frameworks & Software Standards
1 78 (63.93%) HTML
2 67 (54.92%) CSS
3 48 (39.34%) .NET
4 35 (28.69%) AngularJS
5 34 (27.87%) Web Services
6 32 (26.23%) jQuery
7 30 (24.59%) HTML5
8 25 (20.49%) XML
9 23 (18.85%) JSON
10 22 (18.03%) ASP.NET
11 21 (17.21%) React
11 21 (17.21%) Spring
12 20 (16.39%) Ajax
13 19 (15.57%) Node.js
14 17 (13.93%) ASP.NET Web API
15 15 (12.30%) REST
16 14 (11.48%) ASP.NET MVC
16 14 (11.48%) RESTful
17 13 (10.66%) .NET Framework
17 13 (10.66%) KnockoutJS
Miscellaneous
1 12 (9.84%) Greenfield Project
2 7 (5.74%) DataPower
2 7 (5.74%) W3C
3 6 (4.92%) Computer Science
3 6 (4.92%) User Experience
4 5 (4.10%) Mobile App
5 2 (1.64%) Analytical Skills
5 2 (1.64%) Blog
5 2 (1.64%) Linux Command Line
6 1 (0.82%) Clustering
6 1 (0.82%) FMCG
6 1 (0.82%) Robotics
6 1 (0.82%) Social Media
6 1 (0.82%) Web 2.0
Operating Systems
1 15 (12.30%) Linux
2 12 (9.84%) Windows
3 4 (3.28%) Windows Server
4 1 (0.82%) Android
4 1 (0.82%) Apple iOS
4 1 (0.82%) CentOS
4 1 (0.82%) HPUX
4 1 (0.82%) Solaris
4 1 (0.82%) Ubuntu
4 1 (0.82%) Unix
Processes & Methodologies
1 45 (36.89%) Agile Software Development
2 41 (33.61%) MVC
3 21 (17.21%) TDD
3 21 (17.21%) Web Development
4 16 (13.11%) Continuous Integration
5 15 (12.30%) BDD
5 15 (12.30%) Scrum
6 14 (11.48%) DevOps
7 13 (10.66%) API Development
7 13 (10.66%) E-Commerce
7 13 (10.66%) OO
8 12 (9.84%) SOA
9 11 (9.02%) Front End Development
9 11 (9.02%) Mentoring
9 11 (9.02%) Web Application Development
10 9 (7.38%) Software Engineering
10 9 (7.38%) Test Automation
11 8 (6.56%) Kanban
11 8 (6.56%) Open Source
11 8 (6.56%) Refactoring
Programming Languages
1 51 (41.80%) Java
2 36 (29.51%) C#
3 35 (28.69%) SQL
4 15 (12.30%) Ruby
5 12 (9.84%) T-SQL
6 8 (6.56%) PHP
6 8 (6.56%) Scala
7 7 (5.74%) Groovy
7 7 (5.74%) Kotlin
8 5 (4.10%) PowerShell
9 4 (3.28%) ES6
9 4 (3.28%) Python
10 3 (2.46%) C++
11 2 (1.64%) BeanShell
12 1 (0.82%) Bash Shell
12 1 (0.82%) GraphQL
12 1 (0.82%) Perl
12 1 (0.82%) PL/SQL
Qualifications
1 5 (4.10%) Degree
2 4 (3.28%) Computer Science Degree
3 3 (2.46%) Security Cleared
4 2 (1.64%) HND
5 1 (0.82%) SC Cleared
Quality Assurance & Compliance
1 8 (6.56%) QA
2 1 (0.82%) SLA
System Software
1 2 (1.64%) Docker
Systems Management
1 7 (5.74%) WebSphere Cast Iron
2 4 (3.28%) Ansible
3 1 (0.82%) Puppet
Vendors
1 17 (13.93%) Oracle
2 13 (10.66%) Microsoft
3 9 (7.38%) IBM
4 7 (5.74%) hybris
4 7 (5.74%) Sybase
5 6 (4.92%) New Relic
5 6 (4.92%) Zend
6 5 (4.10%) SAP
7 2 (1.64%) Dell
7 2 (1.64%) Nintex
8 1 (0.82%) Adobe
8 1 (0.82%) Apple
8 1 (0.82%) ATG
8 1 (0.82%) Atlassian
8 1 (0.82%) Blue Martini
8 1 (0.82%) Demandware
8 1 (0.82%) Salesforce.com
8 1 (0.82%) Tableau
8 1 (0.82%) TIBCO
8 1 (0.82%) Xamarin