Period
to 16 October 2019

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 16 October 2019 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
16 Oct 2019
Same period 2018 Same period 2017
Rank 11 10 11
Rank change year-on-year -1 +1 +7
Contract jobs citing JavaScript 118 153 139
As % of all contract IT jobs advertised in Hertfordshire 8.71% 9.58% 9.32%
As % of the Programming Languages category 23.74% 28.18% 24.17%
Number of daily rates quoted 41 107 133
Hertfordshire median daily rate £400 £400 £425
Median daily rate % change year-on-year - -5.88% +13.33%
10th Percentile £300 £166 £300
90th Percentile £488 £543 £530
East of England median daily rate £425 £425 £375
% change year-on-year - +13.33% -
Number of hourly rates quoted 0 0 1
Hertfordshire median hourly rate - - £15.00
East of England median hourly rate £35.00 £33.04 £62.50
% change year-on-year +5.93% -47.14% +98.41%

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 497 543 575
As % of all contract IT jobs advertised in Hertfordshire 36.71% 34.00% 38.56%
Number of daily rates quoted 244 357 315
Hertfordshire median daily rate £425 £400 £410
Median daily rate % change year-on-year +6.25% -2.44% +9.33%
10th Percentile £300 £256 £278
90th Percentile £550 £556 £583
East of England median daily rate £438 £425 £400
% change year-on-year +2.94% +6.25% +6.67%
Number of hourly rates quoted 10 17 18
Hertfordshire median hourly rate £41.75 £46.50 £16.81
Median hourly rate % change year-on-year -10.22% +176.70% -66.05%
10th Percentile £32.35 £14.55 £14.55
90th Percentile £47.28 £54.00 £42.83
East of England median hourly rate £45.00 £45.00 £40.00
% change year-on-year - +12.50% -

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 16 October 2019.

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 16 October 2019. 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 +3 61 £450 +12.50% 10
Stevenage -8 20 - - 5
Hemel Hempstead +1 14 £408 -4.12% 10
Borehamwood -5 5 £350 -26.32% 1
St Albans -4 1 £415 +35.51% 19
Hatfield -9 1 £400 -5.88% 2
Bishop's Stortford - 1 £340 - 3
Hoddesdon - 1 £225 - 1
Letchworth - 1 - - 4
JavaScript
East of England

For the 6 months to 16 October 2019, 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 Hertfordshire region with a requirement for JavaScript.

1 89 (75.42%) HTML
2 79 (66.95%) CSS
3 74 (62.71%) Agile Software Development
4 57 (48.31%) Java
5 56 (47.46%) Git (software)
6 53 (44.92%) E-Commerce
7 49 (41.53%) Web Services
8 43 (36.44%) jQuery
9 40 (33.90%) AngularJS
10 39 (33.05%) Front End Development
11 37 (31.36%) Magento
11 37 (31.36%) TDD
12 36 (30.51%) XHTML
12 36 (30.51%) Twitter Bootstrap
13 34 (28.81%) Sass
14 33 (27.97%) Responsive Web Design
14 33 (27.97%) PHP
14 33 (27.97%) Games
15 32 (27.12%) C#
15 32 (27.12%) BDD
15 32 (27.12%) User Experience
16 31 (26.27%) Node.js
16 31 (26.27%) Scrum
17 30 (25.42%) .NET
18 29 (24.58%) Linux
18 29 (24.58%) Cross-Browser Compatibility
19 28 (23.73%) Problem-Solving
19 28 (23.73%) React
20 27 (22.88%) Wireframes
20 27 (22.88%) Windows

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 27 (22.88%) CMS
1 27 (22.88%) WebSphere
2 19 (16.10%) Sitecore CMS
3 8 (6.78%) Apache
4 5 (4.24%) Adobe Experience Manager
4 5 (4.24%) Confluence
5 4 (3.39%) Elasticsearch
5 4 (3.39%) IIS
6 3 (2.54%) Drupal
6 3 (2.54%) SilverStripe
6 3 (2.54%) WordPress
7 2 (1.69%) MQSeries
8 1 (0.85%) SharePoint
8 1 (0.85%) SharePoint 2013
Applications
1 1 (0.85%) Photoshop
1 1 (0.85%) Sketch
Business Applications
1 37 (31.36%) Magento
2 1 (0.85%) SDL Web 8
2 1 (0.85%) Shopify
Cloud Services
1 9 (7.63%) AWS
2 7 (5.93%) Force.com
3 5 (4.24%) Azure
3 5 (4.24%) Sauce Labs
4 4 (3.39%) AWS Lambda
4 4 (3.39%) BrowserStack
4 4 (3.39%) Route 53
4 4 (3.39%) Serverless
5 3 (2.54%) Amazon ECS
5 3 (2.54%) Amazon Kinesis
5 3 (2.54%) AWS CloudFormation
5 3 (2.54%) npm
6 1 (0.85%) Amazon ElastiCache
6 1 (0.85%) AWS Elastic Beanstalk
6 1 (0.85%) DigitalOcean
6 1 (0.85%) GCP
6 1 (0.85%) GitHub
6 1 (0.85%) Heroku
6 1 (0.85%) SaaS
6 1 (0.85%) Salesforce Service Cloud
Communications & Networking
1 20 (16.95%) Ethernet
1 20 (16.95%) TCP/IP
2 8 (6.78%) HTTP
3 1 (0.85%) Skype
Database & Business Intelligence
1 18 (15.25%) MySQL
2 11 (9.32%) SQL Server
3 9 (7.63%) Relational Database
4 5 (4.24%) Amazon DynamoDB
4 5 (4.24%) NoSQL
5 4 (3.39%) SQL Server 2008
6 2 (1.69%) DB2
6 2 (1.69%) DbVisualizer
6 2 (1.69%) MongoDB
6 2 (1.69%) SQL Server 2016
7 1 (0.85%) Amazon RDS
7 1 (0.85%) Apache Cassandra
7 1 (0.85%) PostgreSQL
7 1 (0.85%) SQL Server Integration Services
7 1 (0.85%) Sybase ASE
Development Applications
1 56 (47.46%) Git (software)
2 25 (21.19%) Bower
2 25 (21.19%) Grunt
3 24 (20.34%) Visual Studio
4 22 (18.64%) Jasmine
5 21 (17.80%) Karma Test Runner
6 20 (16.95%) Eclipse
6 20 (16.95%) NetBeans
7 18 (15.25%) JIRA
8 12 (10.17%) Selenium
9 10 (8.47%) Jenkins
9 10 (8.47%) Subversion
10 8 (6.78%) Cucumber
10 8 (6.78%) TestRail
11 7 (5.93%) WebDriver
12 6 (5.08%) Robot Framework
13 5 (4.24%) Appium
13 5 (4.24%) Calabash
14 4 (3.39%) SoapUI
14 4 (3.39%) webpack
General
1 33 (27.97%) Games
2 20 (16.95%) Aerospace
2 20 (16.95%) Military
3 14 (11.86%) Retail
4 7 (5.93%) Marketing
4 7 (5.93%) Telecoms
5 4 (3.39%) Finance
6 3 (2.54%) Publishing
7 2 (1.69%) Manufacturing
7 2 (1.69%) Pharmaceutical
8 1 (0.85%) Legal
Job Titles
1 81 (68.64%) Developer
2 43 (36.44%) Front End Developer (Client-Side Developer)
3 20 (16.95%) Magento Developer
4 15 (12.71%) React Developer
5 8 (6.78%) C# Developer
5 8 (6.78%) Tester
6 6 (5.08%) PHP Developer
7 5 (4.24%) Salesforce Developer
8 4 (3.39%) Angular Developer
8 4 (3.39%) Automation Tester
8 4 (3.39%) Cloud Developer
8 4 (3.39%) Full Stack Developer
8 4 (3.39%) Senior Developer
8 4 (3.39%) Software Developer
8 4 (3.39%) Test Leader
9 3 (2.54%) Architect
9 3 (2.54%) AWS Developer
9 3 (2.54%) E-Commerce Developer
9 3 (2.54%) Lead Developer
9 3 (2.54%) Mobile Tester
Libraries, Frameworks & Software Standards
1 89 (75.42%) HTML
2 79 (66.95%) CSS
3 49 (41.53%) Web Services
4 43 (36.44%) jQuery
5 40 (33.90%) AngularJS
6 36 (30.51%) Twitter Bootstrap
6 36 (30.51%) XHTML
7 34 (28.81%) Sass
8 31 (26.27%) Node.js
9 30 (25.42%) .NET
10 28 (23.73%) React
11 27 (22.88%) LESS
12 23 (19.49%) Semantic HTML
13 20 (16.95%) Qt
14 19 (16.10%) Dojo
14 19 (16.10%) HTML5
15 17 (14.41%) CSS3
16 16 (13.56%) DirectX
16 16 (13.56%) MFC
16 16 (13.56%) OpenGL
Miscellaneous
1 32 (27.12%) User Experience
2 24 (20.34%) Vector Graphics
2 24 (20.34%) W3C
3 9 (7.63%) Analytical Skills
4 4 (3.39%) Mobile App
5 3 (2.54%) Enterprise Software
6 2 (1.69%) Client/Server
6 2 (1.69%) Cloud Native
7 1 (0.85%) Data Structures
7 1 (0.85%) Greenfield Project
Operating Systems
1 29 (24.58%) Linux
2 27 (22.88%) Windows
3 10 (8.47%) Android
3 10 (8.47%) Apple iOS
4 7 (5.93%) Mac OS
5 2 (1.69%) Unix
Processes & Methodologies
1 74 (62.71%) Agile Software Development
2 53 (44.92%) E-Commerce
3 39 (33.05%) Front End Development
4 37 (31.36%) TDD
5 33 (27.97%) Responsive Web Design
6 32 (27.12%) BDD
7 31 (26.27%) Scrum
8 29 (24.58%) Cross-Browser Compatibility
9 28 (23.73%) Problem-Solving
10 27 (22.88%) Wireframes
11 23 (19.49%) Sprint Planning
12 22 (18.64%) Unit Testing
13 21 (17.80%) MVC
14 20 (16.95%) Mathematics
14 20 (16.95%) OO
14 20 (16.95%) Software Engineering
15 15 (12.71%) Test Automation
16 13 (11.02%) DevOps
17 12 (10.17%) Open Source
18 10 (8.47%) OO PHP
Programming Languages
1 57 (48.31%) Java
2 33 (27.97%) PHP
3 32 (27.12%) C#
4 20 (16.95%) C++
5 16 (13.56%) GLSL
5 16 (13.56%) HLSL
6 11 (9.32%) SQL
7 7 (5.93%) TypeScript
8 5 (4.24%) Apex Code
8 5 (4.24%) Python
8 5 (4.24%) Ruby
8 5 (4.24%) SOQL
8 5 (4.24%) SOSL
9 3 (2.54%) ES6
9 3 (2.54%) Objective-C
9 3 (2.54%) Perl
9 3 (2.54%) PowerShell
9 3 (2.54%) Shell Script
10 2 (1.69%) C
10 2 (1.69%) T-SQL
Qualifications
1 20 (16.95%) Degree
1 20 (16.95%) Security Cleared
2 16 (13.56%) SC Cleared
3 3 (2.54%) SANS
4 1 (0.85%) CCNA
4 1 (0.85%) Cisco Certification
Quality Assurance & Compliance
1 3 (2.54%) QA
System Software
1 3 (2.54%) Docker
2 2 (1.69%) Active Directory
3 1 (0.85%) LXC
Systems Management
1 6 (5.08%) HP Quality Center
2 3 (2.54%) Single Sign-On
2 3 (2.54%) Terraform
2 3 (2.54%) WebInspect
3 2 (1.69%) Kubernetes
4 1 (0.85%) Ansible
4 1 (0.85%) Nessus
Vendors
1 25 (21.19%) IBM
2 24 (20.34%) Microsoft
3 19 (16.10%) Sitecore
4 11 (9.32%) hybris
5 8 (6.78%) Zend
6 7 (5.93%) Salesforce.com
7 3 (2.54%) Acunetix
7 3 (2.54%) HP
8 2 (1.69%) Atlassian
8 2 (1.69%) Demandware
8 2 (1.69%) Oracle
9 1 (0.85%) Cisco
9 1 (0.85%) Nintex
9 1 (0.85%) Sybase