Period
to 11 August 2020

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 11 August 2020 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
11 Aug 2020
Same period 2019 Same period 2018
Rank 7 8 11
Rank change year-on-year +1 +3 +1
Contract jobs citing JavaScript 57 157 147
As % of all contract jobs advertised in Hertfordshire 11.54% 10.72% 9.33%
As % of the Programming Languages category 34.76% 27.99% 28.11%
Number of daily rates quoted 38 69 110
Median daily rate £400 £425 £400
Median daily rate % change year-on-year -5.88% +6.25% -3.03%
10th Percentile £213 £310 £160
90th Percentile £525 £528 £513
East of England median daily rate £400 £425 £425
% change year-on-year -5.88% - +13.33%
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
East of England median hourly rate - £44.00 £35.54
% change year-on-year - +23.80% -11.15%

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 164 561 523
As % of all contract IT jobs advertised in Hertfordshire 33.20% 38.32% 33.21%
Number of daily rates quoted 93 273 330
Median daily rate £425 £438 £400
Median daily rate % change year-on-year -2.86% +9.38% -3.03%
10th Percentile £289 £300 £240
90th Percentile £550 £550 £556
East of England median daily rate £450 £450 £425
% change year-on-year - +5.88% +6.25%
Number of hourly rates quoted 4 14 16
Median hourly rate £47.50 £45.00 £23.07
Median hourly rate % change year-on-year +5.56% +95.08% -26.77%
10th Percentile £45.90 £35.53 £11.75
90th Percentile £54.88 £58.63 £52.50
Median hourly rate £41.00 £45.00 £41.25
% change year-on-year -8.89% +9.09% +9.27%

JavaScript
Job Vacancy Trend in Hertfordshire

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

Job vacancy trend for JavaScript in Hertfordshire

JavaScript
Contractor Daily Rate Trend in Hertfordshire

3-month moving average daily rate quoted in jobs citing JavaScript in Hertfordshire.

Daily rate trend for JavaScript in Hertfordshire

JavaScript
Daily Rate Histogram in Hertfordshire

Daily rate distribution for jobs citing JavaScript in Hertfordshire over the 6 months to 11 August 2020.

Daily rate histogram for JavaScript in Hertfordshire

JavaScript
Contractor Hourly Rate Trend in Hertfordshire

3-month moving average hourly rates quoted in jobs citing JavaScript in Hertfordshire.

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 11 August 2020. 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 16 £400 -5.88% 8
Stevenage +7 14 £475 - 5
Borehamwood +1 10 £375 +7.14% 2
Welwyn Garden City +4 4 £225 -43.75% 1
Hatfield +7 3 £500 +11.11% 2
Letchworth +4 3 £325 - 1
Rickmansworth +8 2 £225 -67.86%
St Albans +3 2 - - 11
Welwyn -2 1 - - 2
Hemel Hempstead -4 1 - - 3
JavaScript
East of England

For the 6 months to 11 August 2020, 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 23 (40.35%) HTML
1 23 (40.35%) Java
2 22 (38.60%) CSS
2 22 (38.60%) Agile Software Development
3 20 (35.09%) Git (software)
4 19 (33.33%) Linux
5 16 (28.07%) Web Services
6 15 (26.32%) PHP
6 15 (26.32%) Software Engineering
7 14 (24.56%) Degree
7 14 (24.56%) Scrum
7 14 (24.56%) jQuery
7 14 (24.56%) C#
7 14 (24.56%) Node.js
8 13 (22.81%) Mathematics
9 12 (21.05%) .NET
9 12 (21.05%) E-Commerce
9 12 (21.05%) Microsoft
10 11 (19.30%) Ethernet
10 11 (19.30%) TCP/IP
10 11 (19.30%) Eclipse
10 11 (19.30%) Aerospace
10 11 (19.30%) C++
10 11 (19.30%) MySQL
10 11 (19.30%) Visual Studio
10 11 (19.30%) Qt
10 11 (19.30%) NetBeans
10 11 (19.30%) Military
10 11 (19.30%) AngularJS
10 11 (19.30%) Docker

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 7 (12.28%) CMS
2 6 (10.53%) Confluence
3 4 (7.02%) Tomcat
4 3 (5.26%) Headless CMS
5 2 (3.51%) Adobe Experience Manager
6 1 (1.75%) Apache Spark
6 1 (1.75%) JBoss
6 1 (1.75%) Sitecore CMS
6 1 (1.75%) WebLogic
Applications
1 2 (3.51%) Adobe XD
1 2 (3.51%) Figma
1 2 (3.51%) OmniGraffle
1 2 (3.51%) Sketch
Business Applications
1 4 (7.02%) Magento
Cloud Services
1 8 (14.04%) AWS
2 5 (8.77%) Azure
3 3 (5.26%) Amazon S3
3 3 (5.26%) GCP
4 2 (3.51%) Google Analytics
5 1 (1.75%) Amazon EMR
5 1 (1.75%) AWS Lambda
5 1 (1.75%) npm
5 1 (1.75%) Power Platform
5 1 (1.75%) SaaS
5 1 (1.75%) Serverless
Communications & Networking
1 11 (19.30%) Ethernet
1 11 (19.30%) TCP/IP
2 2 (3.51%) SMS
3 1 (1.75%) IKE
Database & Business Intelligence
1 11 (19.30%) MySQL
2 10 (17.54%) SQL Server
3 4 (7.02%) Hadoop
4 3 (5.26%) NoSQL
4 3 (5.26%) ObjectStore
4 3 (5.26%) Relational Database
5 1 (1.75%) Amazon DynamoDB
5 1 (1.75%) Amazon Redshift
5 1 (1.75%) Big Data
5 1 (1.75%) Data Mining
5 1 (1.75%) Data Warehouse
5 1 (1.75%) Microsoft Analysis Services
5 1 (1.75%) Power BI
5 1 (1.75%) SQL Server Analysis Services
5 1 (1.75%) SQL Server Integration Services
5 1 (1.75%) UniData
Development Applications
1 20 (35.09%) Git (software)
2 11 (19.30%) Eclipse
2 11 (19.30%) NetBeans
2 11 (19.30%) Visual Studio
3 9 (15.79%) Jenkins
4 6 (10.53%) Bitbucket
4 6 (10.53%) JIRA
4 6 (10.53%) Vagrant
5 4 (7.02%) gulp
6 3 (5.26%) JUnit
7 2 (3.51%) Balsamiq
7 2 (3.51%) Jasmine
7 2 (3.51%) Karma Test Runner
8 1 (1.75%) Ant
8 1 (1.75%) Bower
8 1 (1.75%) Grunt
8 1 (1.75%) Maven
8 1 (1.75%) Protractor
8 1 (1.75%) Selenium
General
1 11 (19.30%) Aerospace
1 11 (19.30%) Military
2 9 (15.79%) Finance
3 7 (12.28%) Retail
4 2 (3.51%) Automotive
4 2 (3.51%) Law
4 2 (3.51%) Pharmaceutical
5 1 (1.75%) Marketing
Job Titles
1 39 (68.42%) Developer
2 11 (19.30%) PHP Developer
3 7 (12.28%) Front End Developer (Client-Side Developer)
4 6 (10.53%) Java Developer
5 4 (7.02%) Magento Developer
6 3 (5.26%) .NET Developer
6 3 (5.26%) MySQL Developer
6 3 (5.26%) PHP Laravel Developer
6 3 (5.26%) PHP MySQL Developer
7 2 (3.51%) Angular Developer
7 2 (3.51%) Data Engineer
7 2 (3.51%) Designer
7 2 (3.51%) Full Stack Developer
7 2 (3.51%) Linux Developer
7 2 (3.51%) UI Developer
7 2 (3.51%) UX Designer
8 1 (1.75%) Automation Tester
8 1 (1.75%) Digital Analyst
8 1 (1.75%) Java Engineer
8 1 (1.75%) Mid-Level PHP Developer
Libraries, Frameworks & Software Standards
1 23 (40.35%) HTML
2 22 (38.60%) CSS
3 16 (28.07%) Web Services
4 14 (24.56%) jQuery
4 14 (24.56%) Node.js
5 12 (21.05%) .NET
6 11 (19.30%) AngularJS
6 11 (19.30%) Qt
7 9 (15.79%) ActiveX
7 9 (15.79%) DirectX
7 9 (15.79%) MFC
7 9 (15.79%) OpenGL
8 7 (12.28%) RESTful
9 6 (10.53%) HTML5
9 6 (10.53%) Laravel
9 6 (10.53%) Spring
10 5 (8.77%) CSS3
11 4 (7.02%) Handlebars
11 4 (7.02%) React
11 4 (7.02%) Vue.js
Miscellaneous
1 3 (5.26%) User Experience
2 2 (3.51%) Biotechnology
2 2 (3.51%) FMCG
2 2 (3.51%) Greenfield Project
3 1 (1.75%) Analytical Skills
3 1 (1.75%) Vector Graphics
3 1 (1.75%) W3C
Operating Systems
1 19 (33.33%) Linux
2 9 (15.79%) Windows
3 1 (1.75%) CoreOS
Processes & Methodologies
1 22 (38.60%) Agile Software Development
2 15 (26.32%) Software Engineering
3 14 (24.56%) Scrum
4 13 (22.81%) Mathematics
5 12 (21.05%) E-Commerce
6 9 (15.79%) Front End Development
6 9 (15.79%) MVC
7 8 (14.04%) OO
8 6 (10.53%) Unit Testing
9 5 (8.77%) Responsive Web Design
10 4 (7.02%) BDD
10 4 (7.02%) DevOps
10 4 (7.02%) Micro Frontends
10 4 (7.02%) Problem-Solving
10 4 (7.02%) TDD
10 4 (7.02%) Web Design
10 4 (7.02%) Web Development
11 3 (5.26%) Infrastructure as Code
11 3 (5.26%) OO PHP
11 3 (5.26%) Wireframes
Programming Languages
1 23 (40.35%) Java
2 15 (26.32%) PHP
3 14 (24.56%) C#
4 11 (19.30%) C++
5 9 (15.79%) Bash Shell
5 9 (15.79%) GLSL
5 9 (15.79%) HLSL
5 9 (15.79%) Python
6 3 (5.26%) C
6 3 (5.26%) PHP 7
6 3 (5.26%) SQL
7 1 (1.75%) Haskell
7 1 (1.75%) R
7 1 (1.75%) Scala
7 1 (1.75%) TypeScript
7 1 (1.75%) UniBasic
7 1 (1.75%) VB.NET
7 1 (1.75%) XAML
Qualifications
1 14 (24.56%) Degree
2 9 (15.79%) SC Cleared
2 9 (15.79%) Security Cleared
3 1 (1.75%) Computer Science Degree
Quality Assurance & Compliance
1 1 (1.75%) HL7
1 1 (1.75%) QA
System Software
1 11 (19.30%) Docker
2 3 (5.26%) Active Directory
2 3 (5.26%) NFS
Systems Management
1 11 (19.30%) Kubernetes
2 9 (15.79%) Ansible
2 9 (15.79%) Terraform
3 6 (10.53%) Opscode Chef
3 6 (10.53%) Packer
3 6 (10.53%) Puppet
Vendors
1 12 (21.05%) Microsoft
2 5 (8.77%) Oracle
2 5 (8.77%) Zend
3 4 (7.02%) Adobe
4 3 (5.26%) Ariba
4 3 (5.26%) Google
4 3 (5.26%) SAP
5 1 (1.75%) jBASE
5 1 (1.75%) JDA
5 1 (1.75%) Sencha
5 1 (1.75%) Sitecore
5 1 (1.75%) Talend