Period
to 28 July 2017

The median contractor rate for a JavaScript Developer was £425 per day in advertised job vacancies in Hertfordshire during the 6 months to 28 July 2017.

The first table below provides contractor rate benchmarking and summary statistics including a comparison to 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 Developer
East of England > Hertfordshire
6 months to
28 Jul 2017
Same period 2016 Same period 2015
Rank 73 72 61
Rank change year-on-year -1 -11 -6
Contract jobs requiring a JavaScript Developer 19 16 48
As % of all contract IT jobs advertised in Hertfordshire 1.46% 1.13% 2.94%
As % of the Job Titles category 1.57% 1.17% 3.14%
Number of daily rates quoted 34 12 43
Hertfordshire median daily rate £425 £320 £363
Median daily rate % change year-on-year +32.81% -11.72% -3.33%
10th Percentile £334 £303 £213
90th Percentile £470 £450 £429
East of England median daily rate £423 £356 £350
% change year-on-year +18.60% +1.79% -2.78%
Number of hourly rates quoted 0 0 0
Hertfordshire median hourly rate - - -
East of England median hourly rate £38.50 - -

The next table is for comparison with the above and includes summary statistics for all job roles in contract job vacancies advertised in Hertfordshire. Most job vacancies include a discernible job title. As such, the figures in the first row provide an indication of the number of contract jobs in our overall sample.

Contract IT Job Roles
Hertfordshire
Contract job vacancies with a job title containing a recognized job role 1213 1363 1527
As % of all contract IT job vacancies advertised in Hertfordshire 93.45% 96.33% 93.62%
Number of daily rates quoted 640 703 791
Hertfordshire median daily rate £400 £400 £375
Median daily rate % change year-on-year - +6.67% -
10th Percentile £200 £205 £206
90th Percentile £576 £537 £525
East of England median daily rate £408 £400 £375
% change year-on-year +1.88% +6.67% -
Number of hourly rates quoted 121 75 134
Hertfordshire median hourly rate £16.00 £16.00 £17.50
Median hourly rate % change year-on-year - -8.57% +1.45%
10th Percentile £10.50 £9.00 £9.08
90th Percentile £46.50 £52.25 £38.93
East of England median hourly rate £17.50 £20.58 £20.00
% change year-on-year -14.95% +2.88% -4.76%

JavaScript Developer
Job Vacancy Trend in Hertfordshire

Job postings that featured JavaScript Developer in the job title as a percentage of all IT jobs advertised in Hertfordshire.

Job vacancy trend for JavaScript Developer in Hertfordshire

JavaScript Developer
Contractor Daily Rate Trend in Hertfordshire

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

Contractor daily rate trend for JavaScript Developer in Hertfordshire

JavaScript Developer
Contractor Daily Rate Histogram in Hertfordshire

The daily rate distribution of IT jobs citing JavaScript Developer in Hertfordshire over the 6 months to 28 July 2017.

Contractor daily rate histogram for JavaScript Developer in Hertfordshire

JavaScript Developer
Contractor Hourly Rate Trend in Hertfordshire

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

Contractor hourly rate trend for JavaScript Developer in Hertfordshire

JavaScript Developer
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 Developer within the Hertfordshire region over the 6 months to 28 July 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 -14 4 £356 +14.92% 2
Welwyn Garden City - 1 £500 -
JavaScript Developer
East of England

JavaScript Developer Skill Set
Top 30 Co-occurring IT Skills in Hertfordshire

For the 6 months to 28 July 2017, JavaScript Developer contract jobs required the following IT skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Hertfordshire region featuring JavaScript Developer in the job title.

1 19 (100.00%) JavaScript
2 12 (63.16%) HTML
2 12 (63.16%) CSS
3 11 (57.89%) Agile Software Development
3 11 (57.89%) HTML5
4 10 (52.63%) Node.js
4 10 (52.63%) CSS3
5 9 (47.37%) JSON
6 8 (42.11%) jQuery
6 8 (42.11%) React
7 7 (36.84%) Git (software)
8 6 (31.58%) AngularJS
8 6 (31.58%) KnockoutJS
8 6 (31.58%) Ajax
8 6 (31.58%) TDD
8 6 (31.58%) gulp
9 5 (26.32%) Grunt
9 5 (26.32%) Scrum
9 5 (26.32%) Sass
9 5 (26.32%) RESTful
9 5 (26.32%) REST
10 4 (21.05%) MVVM
10 4 (21.05%) Amazon DynamoDB
10 4 (21.05%) SQL
10 4 (21.05%) OO
10 4 (21.05%) E-Commerce
10 4 (21.05%) Amazon AWS
10 4 (21.05%) webpack
10 4 (21.05%) Swagger
10 4 (21.05%) Front End Development

JavaScript Developer Skill Set
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 1 (5.26%) CMS
1 1 (5.26%) Magnolia
Applications
1 1 (5.26%) Photoshop
Cloud Services
1 4 (21.05%) Amazon AWS
2 3 (15.79%) Amazon S3
2 3 (15.79%) AWS CloudFormation
2 3 (15.79%) AWS Lambda
Communications & Networking
1 1 (5.26%) HTTP
Database & Business Intelligence
1 4 (21.05%) Amazon DynamoDB
2 3 (15.79%) MongoDB
3 1 (5.26%) MySQL
3 1 (5.26%) NoSQL
Development Applications
1 7 (36.84%) Git (software)
2 6 (31.58%) gulp
3 5 (26.32%) Grunt
4 4 (21.05%) webpack
5 2 (10.53%) JIRA
5 2 (10.53%) Mocha
5 2 (10.53%) Subversion
6 1 (5.26%) Bitbucket
6 1 (5.26%) Bower
6 1 (5.26%) git-flow
6 1 (5.26%) Jasmine
6 1 (5.26%) Jenkins
6 1 (5.26%) JIRA Agile
6 1 (5.26%) Karma Test Runner
6 1 (5.26%) Protractor
General
1 2 (10.53%) Retail
2 1 (5.26%) Finance
2 1 (5.26%) Law
Libraries, Frameworks & Software Standards
1 12 (63.16%) CSS
1 12 (63.16%) HTML
2 11 (57.89%) HTML5
3 10 (52.63%) CSS3
3 10 (52.63%) Node.js
4 9 (47.37%) JSON
5 8 (42.11%) jQuery
5 8 (42.11%) React
6 6 (31.58%) Ajax
6 6 (31.58%) AngularJS
6 6 (31.58%) KnockoutJS
7 5 (26.32%) REST
7 5 (26.32%) RESTful
7 5 (26.32%) Sass
8 4 (21.05%) Swagger
9 3 (15.79%) Serverless Framework
10 2 (10.53%) Chai
10 2 (10.53%) LESS
10 2 (10.53%) MEAN Stack
10 2 (10.53%) Vue.js
Miscellaneous
1 3 (15.79%) User Experience
2 2 (10.53%) Greenfield Project
3 1 (5.26%) W3C
Processes & Methodologies
1 11 (57.89%) Agile Software Development
2 6 (31.58%) TDD
3 5 (26.32%) Scrum
4 4 (21.05%) Digital Transformation Programme
4 4 (21.05%) E-Commerce
4 4 (21.05%) Front End Development
4 4 (21.05%) MVVM
4 4 (21.05%) OO
5 2 (10.53%) BDD
5 2 (10.53%) Pair Programming
5 2 (10.53%) Unit Testing
5 2 (10.53%) Web Development
6 1 (5.26%) OO PHP
6 1 (5.26%) Project Management
6 1 (5.26%) Responsive Web Design
6 1 (5.26%) SEO
6 1 (5.26%) SOA
6 1 (5.26%) Stakeholder Management
6 1 (5.26%) Visualisation
6 1 (5.26%) Web Design
Programming Languages
1 19 (100.00%) JavaScript
2 4 (21.05%) SQL
3 2 (10.53%) Java
4 1 (5.26%) ES6
4 1 (5.26%) PHP
Quality Assurance & Compliance
1 1 (5.26%) WAI
System Software
1 2 (10.53%) Docker
Systems Management
1 1 (5.26%) TeamSite