The following table provides summary statistics for contract job vacancies advertised in Middlesex with a requirement for JSON skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited JSON over the 3 months to 24 June 2017 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
South East / Middlesex
3 months to
24 Jun 2017
Same period 2016 Same period 2015
Rank 14 25 20
Rank change year-on-year +11 -5  
Contract jobs citing JSON 2 3 2
As % of all contract IT jobs advertised in Middlesex 2.25% 1.72% 1.09%
As % of the Libraries, Frameworks & Software Standards category 8.33% 6.00% 5.00%
Number of daily rates quoted 1 2 2
Median daily rate £325 £350 £300
Median daily rate % change year-on-year -7.14% +16.66%  
UK excluding London median daily rate £425 £400 £375
% change year-on-year +6.25% +6.66%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £41.50 £29.14 £55.00
% change year-on-year +42.41% -47.01%  

JSON is in the industry standards, technical specifications and software library and framework skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Middlesex with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
Middlesex
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 24 50 40
As % of all contract IT job vacancies advertised in Middlesex 26.97% 28.74% 21.86%
Number of daily rates quoted 15 33 16
Median daily rate £401 £395 £300
Median daily rate % change year-on-year +1.39% +31.66%  
90% offered a daily rate of more than £130 £325 £275
10% offered a daily rate of more than £525 £525 £450
UK excluding London median daily rate £398 £375 £350
% change year-on-year +6.00% +7.14%  
Number of hourly rates quoted 0 1 0
Median hourly rate - £45.00 -
UK excluding London median hourly rate £42.50 £36.00 £40.00
% change year-on-year +18.05% -10.00%  

JSON
Job Vacancy Trend in Middlesex

The job posting trend of jobs advertised in Middlesex citing JSON as a proportion of all contract or permanent IT jobs with a match in the Libraries, Frameworks & Software Standards category.

Job vacancy trend for JSON in Middlesex

JSON
Contractor Daily Rate Trend in Middlesex

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

Contractor daily rate trend for JSON in Middlesex

For the 6 months to 24 June 2017, IT contractor jobs citing JSON also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Middlesex region with a requirement for JSON.

1 4 (80.00%) JavaScript
1 4 (80.00%) HTML
1 4 (80.00%) CSS
1 4 (80.00%) HTML5
2 3 (60.00%) UniBasic
2 3 (60.00%) WinForms
2 3 (60.00%) Java
2 3 (60.00%) SQL
2 3 (60.00%) T-SQL
2 3 (60.00%) VB.NET
2 3 (60.00%) .NET
2 3 (60.00%) SQL Server
2 3 (60.00%) ASP.NET
2 3 (60.00%) Web Services
2 3 (60.00%) XML
2 3 (60.00%) Unix
2 3 (60.00%) Windows
2 3 (60.00%) OOP
2 3 (60.00%) OO
2 3 (60.00%) IBM
2 3 (60.00%) Multithreading
2 3 (60.00%) Redback
2 3 (60.00%) SQL Server 2005
2 3 (60.00%) Prototyping
2 3 (60.00%) C#
3 1 (20.00%) Agile Software Development
3 1 (20.00%) TDD
3 1 (20.00%) BDD
3 1 (20.00%) REST
3 1 (20.00%) CSS3

JSON
Co-occurring IT Skills in Middlesex 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:

Database & Business Intelligence
1 3 (60.00%) SQL Server
1 3 (60.00%) SQL Server 2005
Job Titles
1 4 (80.00%) Developer
2 3 (60.00%) .NET Developer
3 2 (40.00%) C# .NET Developer
3 2 (40.00%) C# Developer
4 1 (20.00%) Architect
4 1 (20.00%) C# VB.NET Developer
4 1 (20.00%) Digital Architect
4 1 (20.00%) Digital Solutions Architect
4 1 (20.00%) JavaScript Developer
4 1 (20.00%) Solutions Architect
4 1 (20.00%) VB.NET Developer
Libraries, Frameworks & Software Standards
1 4 (80.00%) CSS
1 4 (80.00%) HTML
1 4 (80.00%) HTML5
2 3 (60.00%) .NET
2 3 (60.00%) ASP.NET
2 3 (60.00%) Web Services
2 3 (60.00%) WinForms
2 3 (60.00%) XML
3 1 (20.00%) AngularJS
3 1 (20.00%) CSS3
3 1 (20.00%) KnockoutJS
3 1 (20.00%) React
3 1 (20.00%) React Native
3 1 (20.00%) REST
3 1 (20.00%) RESTful
3 1 (20.00%) SOAP
Miscellaneous
1 1 (20.00%) Smart Meter
Operating Systems
1 3 (60.00%) Unix
1 3 (60.00%) Windows
Processes & Methodologies
1 3 (60.00%) Multithreading
1 3 (60.00%) OO
1 3 (60.00%) OOP
1 3 (60.00%) Prototyping
2 1 (20.00%) Agile Software Development
2 1 (20.00%) API Design
2 1 (20.00%) BDD
2 1 (20.00%) IT Strategy
2 1 (20.00%) Open Source
2 1 (20.00%) TDD
2 1 (20.00%) Test Automation
Programming Languages
1 4 (80.00%) JavaScript
2 3 (60.00%) C#
2 3 (60.00%) Java
2 3 (60.00%) SQL
2 3 (60.00%) T-SQL
2 3 (60.00%) UniBasic
2 3 (60.00%) VB.NET
Vendors
1 3 (60.00%) IBM
1 3 (60.00%) Redback