Period
to 15 July 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 15 July 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
15 Jul 2018
Same period 2017 Same period 2016
Rank 70 41 68
Rank change year-on-year -29 +27 +19
Contract jobs citing JSON 32 51 20
As % of all contract IT jobs advertised in Hertfordshire 2.03% 3.99% 1.44%
As % of the Libraries, Frameworks & Software Standards category 7.73% 14.91% 7.69%
Number of daily rates quoted 15 37 10
Hertfordshire median daily rate £380 £425 £350
Median daily rate % change year-on-year -10.59% +21.43% -11.95%
10th Percentile £256 £328 £266
90th Percentile £431 £500 £513
East of England median daily rate £525 £438 £400
% change year-on-year +20.00% +9.38% +14.29%
Number of hourly rates quoted 0 0 0
Hertfordshire median hourly rate - - -
East of England median hourly rate £70.00 £41.50 £55.00
% change year-on-year +68.67% -24.55% +41.94%

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 414 342 260
As % of all contract IT jobs advertised in Hertfordshire 26.29% 26.74% 18.72%
Number of daily rates quoted 264 233 158
Hertfordshire median daily rate £418 £405 £400
Median daily rate % change year-on-year +3.09% +1.25% +6.67%
10th Percentile £260 £244 £286
90th Percentile £559 £575 £525
East of England median daily rate £450 £420 £400
% change year-on-year +7.14% +5.00% +6.67%
Number of hourly rates quoted 6 3 4
Hertfordshire median hourly rate £16.11 £37.50 £10.50
Median hourly rate % change year-on-year -57.04% +257.14% -53.33%
10th Percentile £10.88 £19.25 £8.48
90th Percentile £56.25 £38.75 £31.55
East of England median hourly rate £34.00 £37.50 £33.60
% change year-on-year -9.33% +11.61% -7.31%

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 15 July 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 15 July 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
Hemel Hempstead -4 13 £385 +6.94% 1
Watford -12 10 £380 -24.00% 5
Rickmansworth - 5 £350 -
Welwyn Garden City -13 2 £230 -51.58% 1
JSON
East of England

For the 6 months to 15 July 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 27 (84.38%) SQL
2 19 (59.38%) MVC
2 19 (59.38%) Java
3 16 (50.00%) AngularJS
4 15 (46.88%) JSP
4 15 (46.88%) Spring
5 14 (43.75%) Spring MVC
5 14 (43.75%) Finance
6 13 (40.63%) HTML
6 13 (40.63%) T-SQL
7 12 (37.50%) .NET
7 12 (37.50%) HTML5
7 12 (37.50%) Agile Software Development
8 11 (34.38%) JavaScript
9 10 (31.25%) C#
9 10 (31.25%) SQL Server
9 10 (31.25%) Web Services
10 9 (28.13%) CSS
10 9 (28.13%) Twitter Bootstrap
10 9 (28.13%) CSS3
11 8 (25.00%) RESTful
11 8 (25.00%) XHTML
12 7 (21.88%) ASP.NET
12 7 (21.88%) jQuery
12 7 (21.88%) .NET Core
13 6 (18.75%) XML
14 5 (15.63%) Microsoft
14 5 (15.63%) TDD
14 5 (15.63%) Tandem
14 5 (15.63%) ASP.NET MVC

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 (15.63%) Elasticsearch
2 2 (6.25%) CMS
2 2 (6.25%) IIS
2 2 (6.25%) WebSphere
3 1 (3.13%) Adobe Experience Manager
3 1 (3.13%) Apache
3 1 (3.13%) Confluence
3 1 (3.13%) JBoss
3 1 (3.13%) MQSeries
3 1 (3.13%) WebSphere Application Server
Business Applications
1 2 (6.25%) Magento
Cloud Services
1 2 (6.25%) Amazon AWS
2 1 (3.13%) GitHub
Communications & Networking
1 1 (3.13%) Internet
Database & Business Intelligence
1 10 (31.25%) SQL Server
2 5 (15.63%) SQL Server 2014
3 3 (9.38%) Power BI
3 3 (9.38%) SQL Server Reporting Services
3 3 (9.38%) Sybase ASE
4 2 (6.25%) RDBMS
4 2 (6.25%) Relational Database
5 1 (3.13%) DB2
5 1 (3.13%) Jackrabbit
5 1 (3.13%) MySQL
Development Applications
1 3 (9.38%) Git (software)
1 3 (9.38%) JIRA
2 2 (6.25%) Jasmine
2 2 (6.25%) Jenkins
2 2 (6.25%) JUnit
2 2 (6.25%) Mockito
2 2 (6.25%) Protractor
3 1 (3.13%) Ant
3 1 (3.13%) Bitbucket
3 1 (3.13%) EasyMock
3 1 (3.13%) Eclipse
3 1 (3.13%) Hamcrest
3 1 (3.13%) JIRA Agile
3 1 (3.13%) Log4j
3 1 (3.13%) Maven
3 1 (3.13%) SoapUI
3 1 (3.13%) Subversion
3 1 (3.13%) Visual Studio
3 1 (3.13%) WebSphere Studio Application Developer
General
1 14 (43.75%) Finance
2 1 (3.13%) Games
2 1 (3.13%) Retail
Job Titles
1 26 (81.25%) Developer
2 14 (43.75%) Java Developer
3 12 (37.50%) JSP Developer
3 12 (37.50%) SQL Developer
4 9 (28.13%) .NET Developer
5 6 (18.75%) C# .NET Developer
5 6 (18.75%) C# Developer
6 5 (15.63%) Java Engineer
7 4 (12.50%) Elasticsearch Developer
8 3 (9.38%) ASP.NET Developer
9 2 (6.25%) Angular Developer
9 2 (6.25%) C# ASP.NET Developer
9 2 (6.25%) Java Software Engineer
9 2 (6.25%) Software Engineer
9 2 (6.25%) Support Engineer
9 2 (6.25%) Technical Engineer
9 2 (6.25%) Technical Support
9 2 (6.25%) Technical Support Engineer
10 1 (3.13%) AWS Engineer
10 1 (3.13%) SC Cleared Software Engineer
Libraries, Frameworks & Software Standards
1 16 (50.00%) AngularJS
2 15 (46.88%) JSP
2 15 (46.88%) Spring
3 14 (43.75%) Spring MVC
4 13 (40.63%) HTML
5 12 (37.50%) .NET
5 12 (37.50%) HTML5
6 10 (31.25%) Web Services
7 9 (28.13%) CSS
7 9 (28.13%) CSS3
7 9 (28.13%) Twitter Bootstrap
8 8 (25.00%) RESTful
8 8 (25.00%) XHTML
9 7 (21.88%) .NET Core
9 7 (21.88%) ASP.NET
9 7 (21.88%) jQuery
10 6 (18.75%) XML
11 5 (15.63%) ASP.NET MVC
11 5 (15.63%) ASP.NET MVC 5
11 5 (15.63%) REST
Miscellaneous
1 5 (15.63%) Greenfield Project
1 5 (15.63%) Tandem
Operating Systems
1 2 (6.25%) Unix
2 1 (3.13%) HPUX
2 1 (3.13%) Linux
2 1 (3.13%) Solaris
2 1 (3.13%) Windows
Processes & Methodologies
1 19 (59.38%) MVC
2 12 (37.50%) Agile Software Development
3 5 (15.63%) BDD
3 5 (15.63%) DevOps
3 5 (15.63%) Infrastructure Management
3 5 (15.63%) TDD
3 5 (15.63%) Web Application Development
4 4 (12.50%) Continuous Integration
4 4 (12.50%) E-Commerce
4 4 (12.50%) Requirements Analysis
4 4 (12.50%) SDLC
5 3 (9.38%) Business Intelligence
5 3 (9.38%) Software Engineering
6 2 (6.25%) CRM
6 2 (6.25%) DNA
6 2 (6.25%) Incident Management
6 2 (6.25%) OO
6 2 (6.25%) Test Automation
6 2 (6.25%) UML
6 2 (6.25%) Unit Testing
Programming Languages
1 27 (84.38%) SQL
2 19 (59.38%) Java
3 13 (40.63%) T-SQL
4 11 (34.38%) JavaScript
5 10 (31.25%) C#
6 2 (6.25%) PHP
6 2 (6.25%) TypeScript
6 2 (6.25%) VBScript
7 1 (3.13%) Bash Shell
7 1 (3.13%) Perl
Qualifications
1 4 (12.50%) Security Cleared
2 1 (3.13%) AWS Certification
2 1 (3.13%) SC Cleared
System Software
1 3 (9.38%) Active Directory
2 1 (3.13%) Docker
Systems Management
1 1 (3.13%) Kubernetes
1 1 (3.13%) Puppet
Vendors
1 5 (15.63%) Microsoft
2 3 (9.38%) Sybase
3 2 (6.25%) hybris
4 1 (3.13%) ATG
4 1 (3.13%) Blue Martini
4 1 (3.13%) Demandware
4 1 (3.13%) Elastic Path
4 1 (3.13%) Google
4 1 (3.13%) IBM
4 1 (3.13%) Oracle