Period
to 22 April 2018

The following table provides summary statistics for contract job vacancies advertised in Hertfordshire with a requirement for JSON skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited JSON over the 6 months to 22 April 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.

JSON
East of England > Hertfordshire
6 months to
22 Apr 2018
Same period 2017 Same period 2016
Rank 67 61 76
Rank change year-on-year -6 +15 +1
Contract jobs citing JSON 30 28 17
As % of all contract IT jobs advertised in Hertfordshire 2.04% 2.30% 1.23%
As % of the Libraries, Frameworks & Software Standards category 8.29% 7.89% 6.25%
Number of daily rates quoted 12 17 11
Hertfordshire median daily rate £383 £470 £315
Median daily rate % change year-on-year -18.62% +49.21% -33.68%
10th Percentile £225 £328 £270
90th Percentile £434 £513 £510
East of England median daily rate £513 £395 £368
% change year-on-year +29.75% +7.48% -13.53%
Number of hourly rates quoted 0 0 0
Hertfordshire median hourly rate - - -
East of England median hourly rate £70.00 £35.50 £55.00
% change year-on-year +97.18% -35.45% +46.67%

JSON is in the Software Libraries and Frameworks 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 technical specification, industry standards, software libraries and framework skills.

All Software Libraries and Frameworks
Hertfordshire
Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 362 355 272
As % of all contract IT jobs advertised in Hertfordshire 24.66% 29.10% 19.67%
Number of daily rates quoted 200 245 159
Hertfordshire median daily rate £425 £425 £385
Median daily rate % change year-on-year - +10.39% -0.65%
10th Percentile £280 £253 £285
90th Percentile £550 £575 £580
East of England median daily rate £450 £400 £400
% change year-on-year +12.50% - +3.23%
Number of hourly rates quoted 3 4 8
Hertfordshire median hourly rate £14.72 £39.31 £26.50
Median hourly rate % change year-on-year -62.56% +48.35% -29.33%
10th Percentile £11.77 £36.25 £8.78
90th Percentile £17.12 £44.26 £42.00
East of England median hourly rate £40.00 £36.50 £37.50
% change year-on-year +9.59% -2.67% -6.25%

JSON
Job Vacancy Trend in Hertfordshire

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

Job vacancy trend for JSON in Hertfordshire

JSON
Contractor Daily Rate Trend in Hertfordshire

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

Contractor daily rate trend for JSON in Hertfordshire

JSON
Contractor Daily Rate Histogram in Hertfordshire

The daily rate distribution of IT jobs citing JSON in Hertfordshire over the 6 months to 22 April 2018.

Contractor daily rate histogram for JSON in Hertfordshire

JSON
Contractor Hourly Rate Trend in Hertfordshire

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

Contractor hourly rate trend for JSON in Hertfordshire

JSON
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 JSON within the Hertfordshire region over the 6 months to 22 April 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 -7 11 £403 -19.50% 2
Hemel Hempstead +4 8 £385 +6.94% 2
Rickmansworth - 5 £380 -
Welwyn Garden City -10 2 £230 -51.58% 1
Stevenage - 1 - - 1
JSON
East of England

For the 6 months to 22 April 2018, IT contractor jobs citing JSON 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 JSON.

1 25 (83.33%) SQL
2 21 (70.00%) MVC
3 18 (60.00%) HTML
3 18 (60.00%) JavaScript
4 17 (56.67%) Java
4 17 (56.67%) Finance
4 17 (56.67%) AngularJS
5 14 (46.67%) JSP
5 14 (46.67%) Spring
5 14 (46.67%) HTML5
6 13 (43.33%) Spring MVC
6 13 (43.33%) CSS
7 12 (40.00%) Agile Software Development
8 11 (36.67%) T-SQL
9 10 (33.33%) .NET
9 10 (33.33%) CSS3
10 9 (30.00%) jQuery
10 9 (30.00%) SQL Server
10 9 (30.00%) C#
10 9 (30.00%) ASP.NET
10 9 (30.00%) XHTML
11 8 (26.67%) Web Services
11 8 (26.67%) Twitter Bootstrap
12 7 (23.33%) ASP.NET Web API
12 7 (23.33%) Greenfield Project
12 7 (23.33%) Microsoft
12 7 (23.33%) KnockoutJS
12 7 (23.33%) BDD
13 6 (20.00%) ASP.NET MVC
14 5 (16.67%) RESTful

JSON
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 5 (16.67%) Elasticsearch
2 4 (13.33%) IIS
3 2 (6.67%) Apache
3 2 (6.67%) CMS
3 2 (6.67%) WebSphere
4 1 (3.33%) Adobe Experience Manager
4 1 (3.33%) Drupal
4 1 (3.33%) MQSeries
4 1 (3.33%) Tomcat
4 1 (3.33%) WebSphere Application Server
Business Applications
1 2 (6.67%) Magento
Cloud Services
1 2 (6.67%) SaaS
2 1 (3.33%) Amazon AWS
2 1 (3.33%) Microsoft Azure
Communications & Networking
1 1 (3.33%) Internet
Database & Business Intelligence
1 9 (30.00%) SQL Server
2 5 (16.67%) SQL Server 2014
3 4 (13.33%) Sybase ASE
4 2 (6.67%) MySQL
4 2 (6.67%) PostgreSQL
4 2 (6.67%) Redis
4 2 (6.67%) Relational Database
4 2 (6.67%) SQL Server 2008
5 1 (3.33%) DB2
5 1 (3.33%) Jackrabbit
5 1 (3.33%) MongoDB
5 1 (3.33%) RDBMS
Development Applications
1 2 (6.67%) Bitbucket
1 2 (6.67%) Visual Studio
1 2 (6.67%) webpack
2 1 (3.33%) Ant
2 1 (3.33%) Cucumber
2 1 (3.33%) Eclipse
2 1 (3.33%) Git (software)
2 1 (3.33%) Jenkins
2 1 (3.33%) JIRA
2 1 (3.33%) JUnit
2 1 (3.33%) Log4j
2 1 (3.33%) Mockito
2 1 (3.33%) Selenium
2 1 (3.33%) SoapUI
2 1 (3.33%) Subversion
2 1 (3.33%) Team Foundation Server
2 1 (3.33%) WebSphere Studio Application Developer
General
1 17 (56.67%) Finance
2 1 (3.33%) Games
2 1 (3.33%) Marketing
2 1 (3.33%) Retail
Job Titles
1 26 (86.67%) Developer
2 13 (43.33%) Java Developer
3 12 (40.00%) JSP Developer
3 12 (40.00%) SQL Developer
4 9 (30.00%) .NET Developer
5 7 (23.33%) C# .NET Developer
5 7 (23.33%) C# Developer
6 6 (20.00%) Java Engineer
7 4 (13.33%) Elasticsearch Developer
8 3 (10.00%) ASP.NET Developer
8 3 (10.00%) JavaScript Developer
9 2 (6.67%) C# ASP.NET Developer
9 2 (6.67%) Front End Developer (Client-Side Developer)
9 2 (6.67%) Support Engineer
9 2 (6.67%) Technical Engineer
9 2 (6.67%) Technical Support
9 2 (6.67%) Technical Support Engineer
10 1 (3.33%) Software Engineer
10 1 (3.33%) Test Manager
10 1 (3.33%) Web Developer
Libraries, Frameworks & Software Standards
1 18 (60.00%) HTML
2 17 (56.67%) AngularJS
3 14 (46.67%) HTML5
3 14 (46.67%) JSP
3 14 (46.67%) Spring
4 13 (43.33%) CSS
4 13 (43.33%) Spring MVC
5 10 (33.33%) .NET
5 10 (33.33%) CSS3
6 9 (30.00%) ASP.NET
6 9 (30.00%) jQuery
6 9 (30.00%) XHTML
7 8 (26.67%) Twitter Bootstrap
7 8 (26.67%) Web Services
8 7 (23.33%) ASP.NET Web API
8 7 (23.33%) KnockoutJS
9 6 (20.00%) ASP.NET MVC
10 5 (16.67%) REST
10 5 (16.67%) RESTful
10 5 (16.67%) XML
Miscellaneous
1 7 (23.33%) Greenfield Project
2 5 (16.67%) Tandem
3 1 (3.33%) Analytical Skills
3 1 (3.33%) Computer Science
3 1 (3.33%) User Experience
3 1 (3.33%) W3C
Operating Systems
1 2 (6.67%) Linux
1 2 (6.67%) Unix
2 1 (3.33%) HPUX
2 1 (3.33%) Solaris
2 1 (3.33%) Windows
Processes & Methodologies
1 21 (70.00%) MVC
2 12 (40.00%) Agile Software Development
3 7 (23.33%) BDD
4 5 (16.67%) TDD
4 5 (16.67%) Web Application Development
5 4 (13.33%) E-Commerce
6 2 (6.67%) CRM
6 2 (6.67%) DNA
6 2 (6.67%) Incident Management
6 2 (6.67%) Problem-Solving
6 2 (6.67%) Software Engineering
6 2 (6.67%) Ticket Management
6 2 (6.67%) Web Development
7 1 (3.33%) API Development
7 1 (3.33%) API Testing
7 1 (3.33%) Content Management
7 1 (3.33%) Dashboard Development
7 1 (3.33%) Data Governance
7 1 (3.33%) DevOps
7 1 (3.33%) SDLC
Programming Languages
1 25 (83.33%) SQL
2 18 (60.00%) JavaScript
3 17 (56.67%) Java
4 11 (36.67%) T-SQL
5 9 (30.00%) C#
6 3 (10.00%) PHP
6 3 (10.00%) Ruby
7 2 (6.67%) VBScript
8 1 (3.33%) Bash Shell
8 1 (3.33%) Perl
8 1 (3.33%) PowerShell
Qualifications
1 1 (3.33%) HND
Systems Management
1 2 (6.67%) Ansible
Vendors
1 7 (23.33%) Microsoft
2 4 (13.33%) Sybase
3 2 (6.67%) hybris
4 1 (3.33%) ATG
4 1 (3.33%) Blue Martini
4 1 (3.33%) Demandware
4 1 (3.33%) Elastic Path
4 1 (3.33%) IBM
4 1 (3.33%) Oracle