Period
to 20 September 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 20 September 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
20 Sep 2018
Same period 2017 Same period 2016
Rank 77 46 79
Rank change year-on-year -31 +33 +14
Contract jobs citing JSON 25 54 17
As % of all contract IT jobs advertised in Hertfordshire 1.53% 3.82% 1.17%
As % of the Libraries, Frameworks & Software Standards category 5.81% 16.41% 5.69%
Number of daily rates quoted 17 34 5
Hertfordshire median daily rate £450 £425 £425
Median daily rate % change year-on-year +5.88% - +36.00%
10th Percentile £323 £330 £284
90th Percentile £550 £475 £481
East of England median daily rate £525 £475 £400
% change year-on-year +10.53% +18.75% +14.29%
Number of hourly rates quoted 0 0 0
Hertfordshire median hourly rate - - -
East of England median hourly rate £70.00 £62.50 -
% change year-on-year +12.00% - -

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 430 329 299
As % of all contract IT jobs advertised in Hertfordshire 26.36% 23.28% 20.61%
Number of daily rates quoted 287 202 175
Hertfordshire median daily rate £425 £378 £400
Median daily rate % change year-on-year +12.58% -5.63% +6.67%
10th Percentile £235 £257 £263
90th Percentile £569 £575 £538
East of England median daily rate £450 £425 £400
% change year-on-year +5.88% +6.25% +6.67%
Number of hourly rates quoted 8 1 2
Hertfordshire median hourly rate £48.25 £15.00 £19.25
Median hourly rate % change year-on-year +221.67% -22.08% -8.05%
10th Percentile £18.90 £15.00 £11.78
90th Percentile £56.25 £15.00 £27.33
East of England median hourly rate £43.50 £40.00 £36.00
% change year-on-year +8.75% +11.11% -8.86%

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 20 September 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 20 September 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 -2 10 £475 +29.25% 1
Watford -15 7 £550 +41.94% 1
Rickmansworth - 7 £400 -
JSON
East of England

For the 6 months to 20 September 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 17 (68.00%) SQL
2 15 (60.00%) Agile Software Development
3 12 (48.00%) T-SQL
4 11 (44.00%) Web Services
4 11 (44.00%) XML
5 10 (40.00%) Java
5 10 (40.00%) Spring
6 9 (36.00%) JIRA
6 9 (36.00%) Spring MVC
6 9 (36.00%) Security Cleared
6 9 (36.00%) .NET
6 9 (36.00%) MVC
6 9 (36.00%) JSP
6 9 (36.00%) Infrastructure Management
7 8 (32.00%) Test Automation
7 8 (32.00%) HTML5
7 8 (32.00%) SQL Server
7 8 (32.00%) C#
7 8 (32.00%) HTML
7 8 (32.00%) SQL Server Reporting Services
8 6 (24.00%) Continuous Integration
8 6 (24.00%) Requirements Analysis
8 6 (24.00%) SC Cleared
8 6 (24.00%) DevOps
8 6 (24.00%) SDLC
9 5 (20.00%) SQL Server 2016
9 5 (20.00%) Scaled Agile Framework
9 5 (20.00%) AngularJS
9 5 (20.00%) Talend
9 5 (20.00%) BDD

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 3 (12.00%) Confluence
2 1 (4.00%) JBoss
Cloud Services
1 4 (16.00%) Amazon AWS
2 3 (12.00%) GitHub
Database & Business Intelligence
1 8 (32.00%) SQL Server
1 8 (32.00%) SQL Server Reporting Services
2 5 (20.00%) PostgreSQL
2 5 (20.00%) SQL Server 2016
2 5 (20.00%) SQL Server Integration Services
3 4 (16.00%) Sybase ASE
4 3 (12.00%) Power BI
5 1 (4.00%) RDBMS
5 1 (4.00%) Relational Database
Development Applications
1 9 (36.00%) JIRA
2 5 (20.00%) Subversion
3 4 (16.00%) Jenkins
4 3 (12.00%) Bitbucket
4 3 (12.00%) JIRA Agile
4 3 (12.00%) Maven
4 3 (12.00%) Visual Studio
5 2 (8.00%) Git (software)
5 2 (8.00%) Jasmine
5 2 (8.00%) Protractor
6 1 (4.00%) EasyMock
6 1 (4.00%) Hamcrest
6 1 (4.00%) JUnit
6 1 (4.00%) Mockito
General
1 4 (16.00%) Finance
Job Titles
1 21 (84.00%) Developer
2 12 (48.00%) SQL Developer
3 9 (36.00%) Java Developer
4 8 (32.00%) JSP Developer
5 5 (20.00%) Data Migration Developer
5 5 (20.00%) ETL Developer
5 5 (20.00%) Oracle Developer
5 5 (20.00%) Oracle ETL Developer
5 5 (20.00%) PostgreSQL Developer
5 5 (20.00%) SQL Server Developer
6 4 (16.00%) Angular Developer
7 3 (12.00%) AWS DevOps
7 3 (12.00%) AWS DevOps Engineer
7 3 (12.00%) AWS Engineer
7 3 (12.00%) DevOps Engineer
8 2 (8.00%) .NET Developer
9 1 (4.00%) Java Software Engineer
9 1 (4.00%) Senior Java Software Engineer
9 1 (4.00%) Senior Software Engineer
9 1 (4.00%) Software Engineer
Libraries, Frameworks & Software Standards
1 11 (44.00%) Web Services
1 11 (44.00%) XML
2 10 (40.00%) Spring
3 9 (36.00%) .NET
3 9 (36.00%) JSP
3 9 (36.00%) Spring MVC
4 8 (32.00%) HTML
4 8 (32.00%) HTML5
5 5 (20.00%) AngularJS
5 5 (20.00%) Hibernate
5 5 (20.00%) REST
6 4 (16.00%) Angular 2
6 4 (16.00%) CSS
6 4 (16.00%) CSS3
7 3 (12.00%) .NET Core
7 3 (12.00%) .NET Framework
7 3 (12.00%) Entity Framework
7 3 (12.00%) RESTful
7 3 (12.00%) SOAP
8 2 (8.00%) Node.js
Miscellaneous
1 5 (20.00%) Reference Data
Operating Systems
1 3 (12.00%) Windows
Processes & Methodologies
1 15 (60.00%) Agile Software Development
2 9 (36.00%) Infrastructure Management
2 9 (36.00%) MVC
3 8 (32.00%) Test Automation
4 6 (24.00%) Continuous Integration
4 6 (24.00%) DevOps
4 6 (24.00%) Requirements Analysis
4 6 (24.00%) SDLC
5 5 (20.00%) BDD
5 5 (20.00%) Data Mapping
5 5 (20.00%) Data Migration
5 5 (20.00%) ETL
5 5 (20.00%) Migration
5 5 (20.00%) Scaled Agile Framework
5 5 (20.00%) TDD
6 3 (12.00%) Business Intelligence
6 3 (12.00%) Configuration Management
6 3 (12.00%) High Availability
6 3 (12.00%) Mentoring
6 3 (12.00%) Validation
Programming Languages
1 17 (68.00%) SQL
2 12 (48.00%) T-SQL
3 10 (40.00%) Java
4 8 (32.00%) C#
5 5 (20.00%) PL/SQL
6 4 (16.00%) JavaScript
7 2 (8.00%) PowerShell
7 2 (8.00%) TypeScript
Qualifications
1 9 (36.00%) Security Cleared
2 6 (24.00%) SC Cleared
3 3 (12.00%) AWS Certification
System Software
1 3 (12.00%) Active Directory
1 3 (12.00%) Docker
Systems Management
1 3 (12.00%) Kubernetes
2 1 (4.00%) Puppet
Vendors
1 5 (20.00%) Oracle
1 5 (20.00%) Talend
2 4 (16.00%) Sybase
3 1 (4.00%) Google