Period
to 25 February 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 25 February 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
25 Feb 2018
Same period 2017 Same period 2016
Rank 53 67 70
Rank change year-on-year +14 +3 -6
Contract jobs citing JSON 49 26 24
As % of all contract IT jobs advertised in Hertfordshire 3.23% 1.96% 1.74%
As % of the Libraries, Frameworks & Software Standards category 12.79% 7.07% 7.97%
Number of daily rates quoted 19 7 14
Hertfordshire median daily rate £425 £475 £313
Median daily rate % change year-on-year -10.53% +52.00% -28.57%
10th Percentile £279 £323 £272
90th Percentile £489 £500 £375
East of England median daily rate £500 £365 £350
% change year-on-year +36.99% +4.29% -13.58%
Number of hourly rates quoted 0 0 0
Hertfordshire median hourly rate - - -
East of England median hourly rate £62.50 £35.00 £55.00
% change year-on-year +78.57% -36.36% +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 383 368 301
As % of all contract IT jobs advertised in Hertfordshire 25.23% 27.69% 21.83%
Number of daily rates quoted 203 234 167
Hertfordshire median daily rate £425 £437 £375
Median daily rate % change year-on-year -2.80% +16.60% -3.23%
10th Percentile £313 £263 £250
90th Percentile £550 £555 £575
East of England median daily rate £425 £400 £400
% change year-on-year +6.25% - +0.95%
Number of hourly rates quoted 2 4 8
Hertfordshire median hourly rate £13.61 £39.31 £26.50
Median hourly rate % change year-on-year -65.38% +48.35% -29.33%
10th Percentile £11.51 £36.25 £10.35
90th Percentile £15.42 £44.26 £42.00
East of England median hourly rate £45.00 £36.00 £38.50
% change year-on-year +25.00% -6.49% +1.99%

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 25 February 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 25 February 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 -6 21 £425 -15.00% 5
Rickmansworth +8 8 £380 -20.00%
Hemel Hempstead +4 6 £385 +6.94%
Hatfield -2 2 £420 +15.86%
Welwyn Garden City -5 2 £230 - 1
Stevenage - 2 - - 1
Waltham Cross - 1 £563 -
JSON
East of England

For the 6 months to 25 February 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 33 (67.35%) Java
2 31 (63.27%) SQL
3 30 (61.22%) MVC
4 29 (59.18%) JavaScript
5 25 (51.02%) Finance
6 24 (48.98%) Spring
7 23 (46.94%) Spring MVC
7 23 (46.94%) HTML
8 22 (44.90%) JSP
9 17 (34.69%) HTML5
10 16 (32.65%) Agile Software Development
10 16 (32.65%) CSS
11 15 (30.61%) .NET
11 15 (30.61%) AngularJS
12 12 (24.49%) CSS3
12 12 (24.49%) XML
13 10 (20.41%) Web Services
13 10 (20.41%) T-SQL
14 9 (18.37%) SQL Server
14 9 (18.37%) XHTML
15 8 (16.33%) C#
15 8 (16.33%) ASP.NET
15 8 (16.33%) WebSphere
15 8 (16.33%) jQuery
15 8 (16.33%) REST
15 8 (16.33%) RESTful
16 7 (14.29%) BDD
16 7 (14.29%) Greenfield Project
16 7 (14.29%) TDD
16 7 (14.29%) Ruby

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 8 (16.33%) WebSphere
2 5 (10.20%) IIS
3 3 (6.12%) Apache
3 3 (6.12%) CMS
3 3 (6.12%) Elasticsearch
4 2 (4.08%) Adobe Experience Manager
4 2 (4.08%) MQSeries
4 2 (4.08%) WebSphere Application Server
5 1 (2.04%) Drupal
5 1 (2.04%) Tomcat
Business Applications
1 3 (6.12%) Magento
2 1 (2.04%) Dynamics CRM
2 1 (2.04%) SAP HCM
Cloud Services
1 5 (10.20%) SaaS
2 2 (4.08%) Amazon AWS
2 2 (4.08%) Microsoft Azure
3 1 (2.04%) Boomi
3 1 (2.04%) SuccessFactors
Communications & Networking
1 2 (4.08%) Internet
Database & Business Intelligence
1 9 (18.37%) SQL Server
2 5 (10.20%) Relational Database
2 5 (10.20%) Sybase ASE
3 4 (8.16%) PostgreSQL
3 4 (8.16%) RDBMS
3 4 (8.16%) Redis
4 3 (6.12%) MySQL
4 3 (6.12%) SQL Server 2014
5 2 (4.08%) DB2
5 2 (4.08%) Jackrabbit
5 2 (4.08%) MongoDB
5 2 (4.08%) SQL Server 2008
Development Applications
1 5 (10.20%) webpack
2 4 (8.16%) Bitbucket
2 4 (8.16%) Eclipse
2 4 (8.16%) JUnit
2 4 (8.16%) Visual Studio
3 3 (6.12%) Git (software)
4 2 (4.08%) Ant
4 2 (4.08%) Log4j
4 2 (4.08%) Mockito
4 2 (4.08%) Protractor
4 2 (4.08%) Subversion
4 2 (4.08%) WebSphere Studio Application Developer
5 1 (2.04%) Cucumber
5 1 (2.04%) Jenkins
5 1 (2.04%) JIRA
5 1 (2.04%) NUnit
5 1 (2.04%) Selenium
5 1 (2.04%) SoapUI
5 1 (2.04%) Team Foundation Server
5 1 (2.04%) WebDriver
General
1 25 (51.02%) Finance
2 1 (2.04%) French Language
2 1 (2.04%) Games
2 1 (2.04%) Marketing
2 1 (2.04%) Retail
Job Titles
1 44 (89.80%) Developer
2 24 (48.98%) Java Developer
3 20 (40.82%) JSP Developer
3 20 (40.82%) SQL Developer
4 8 (16.33%) .NET Developer
5 7 (14.29%) Java Engineer
6 5 (10.20%) C# .NET Developer
6 5 (10.20%) C# Developer
6 5 (10.20%) Front End Developer (Client-Side Developer)
7 3 (6.12%) ASP.NET Developer
7 3 (6.12%) Integration Developer
7 3 (6.12%) JavaScript Developer
8 2 (4.08%) C# ASP.NET Developer
8 2 (4.08%) Elasticsearch Developer
8 2 (4.08%) Full Stack Developer
8 2 (4.08%) Ruby Developer
8 2 (4.08%) Technical Engineer
8 2 (4.08%) Technical Support
8 2 (4.08%) Technical Support Engineer
8 2 (4.08%) Web Developer
Libraries, Frameworks & Software Standards
1 24 (48.98%) Spring
2 23 (46.94%) HTML
2 23 (46.94%) Spring MVC
3 22 (44.90%) JSP
4 17 (34.69%) HTML5
5 16 (32.65%) CSS
6 15 (30.61%) .NET
6 15 (30.61%) AngularJS
7 12 (24.49%) CSS3
7 12 (24.49%) XML
8 10 (20.41%) Web Services
9 9 (18.37%) XHTML
10 8 (16.33%) ASP.NET
10 8 (16.33%) jQuery
10 8 (16.33%) REST
10 8 (16.33%) RESTful
11 7 (14.29%) XSLT
12 6 (12.24%) Twitter Bootstrap
13 5 (10.20%) ASP.NET Web API
13 5 (10.20%) KnockoutJS
Miscellaneous
1 7 (14.29%) Greenfield Project
2 5 (10.20%) DataPower
3 3 (6.12%) Tandem
4 2 (4.08%) Computer Science
4 2 (4.08%) Mobile App
5 1 (2.04%) Analytical Skills
5 1 (2.04%) User Experience
5 1 (2.04%) W3C
Operating Systems
1 4 (8.16%) Linux
2 3 (6.12%) Unix
3 2 (4.08%) HPUX
3 2 (4.08%) Solaris
3 2 (4.08%) Windows
Processes & Methodologies
1 30 (61.22%) MVC
2 16 (32.65%) Agile Software Development
3 7 (14.29%) BDD
3 7 (14.29%) OO
3 7 (14.29%) TDD
4 6 (12.24%) API Development
4 6 (12.24%) E-Commerce
4 6 (12.24%) Web Development
5 5 (10.20%) DevOps
6 4 (8.16%) Open Source
7 3 (6.12%) CRM
7 3 (6.12%) DNA
7 3 (6.12%) Front End Development
7 3 (6.12%) Test Automation
7 3 (6.12%) Web Application Development
8 2 (4.08%) Configuration Management
8 2 (4.08%) Incident Management
8 2 (4.08%) RAD
8 2 (4.08%) Ticket Management
8 2 (4.08%) UML
Programming Languages
1 33 (67.35%) Java
2 31 (63.27%) SQL
3 29 (59.18%) JavaScript
4 10 (20.41%) T-SQL
5 8 (16.33%) C#
6 7 (14.29%) Ruby
7 3 (6.12%) PHP
8 2 (4.08%) Bash Shell
8 2 (4.08%) Perl
8 2 (4.08%) PowerShell
8 2 (4.08%) VBScript
Qualifications
1 2 (4.08%) HND
1 2 (4.08%) Security Cleared
2 1 (2.04%) SC Cleared
Systems Management
1 5 (10.20%) WebSphere Cast Iron
2 4 (8.16%) Ansible
Vendors
1 7 (14.29%) IBM
2 5 (10.20%) Microsoft
2 5 (10.20%) Sybase
3 3 (6.12%) hybris
3 3 (6.12%) Oracle
4 2 (4.08%) ATG
4 2 (4.08%) Blue Martini
4 2 (4.08%) Demandware
4 2 (4.08%) Elastic Path
5 1 (2.04%) Dell
5 1 (2.04%) SAP