The following table provides summary statistics for contract job vacancies advertised in Hertfordshire with a requirement for iOS SDK skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited iOS SDK over the 3 months to 23 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.

Apple iOS SDK
East of England / Hertfordshire
3 months to
23 Jun 2017
Same period 2016 Same period 2015
Rank 58 - -
Rank change year-on-year - 0  
Contract jobs citing iOS SDK 1 0 0
As % of all contract IT jobs advertised in Hertfordshire 0.16% - -
As % of the Libraries, Frameworks & Software Standards category 0.66% - -
Number of daily rates quoted 1 0 0
Median daily rate £400 - -
UK excluding London median daily rate £388 £325 £419
% change year-on-year +19.23% -22.38%  
Number of hourly rates quoted 0 0 0
Median hourly rate - - -
UK excluding London median hourly rate £41.50 - -

iOS SDK 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 Hertfordshire with a requirement for industry standards, technical specifications and software library and framework skills.

Contract Software Library & Framework Skills
Hertfordshire
Contract job vacancies with a requirement for industry standards, technical specifications and software library and framework skills 152 116 219
As % of all contract IT job vacancies advertised in Hertfordshire 24.05% 17.42% 24.72%
Number of daily rates quoted 109 77 117
Median daily rate £375 £425 £375
Median daily rate % change year-on-year -11.76% +13.33%  
90% offered a daily rate of more than £290 £315 £288
10% offered a daily rate of more than £450 £500 £463
UK excluding London median daily rate £400 £375 £350
% change year-on-year +6.66% +7.14%  
Number of hourly rates quoted 1 1 6
Median hourly rate £15.00 £10.00 £20.94
Median hourly rate % change year-on-year +50.00% -52.23%  
UK excluding London median hourly rate £42.50 £36.00 £40.00
% change year-on-year +18.05% -10.00%  

iOS SDK
Job Vacancy Trend in Hertfordshire

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

Job vacancy trend for iOS SDK in Hertfordshire

iOS SDK
Contractor Daily Rate Trend in Hertfordshire

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

Contractor daily rate trend for iOS SDK in Hertfordshire

For the 6 months to 23 June 2017, IT contractor jobs citing iOS SDK 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 Hertfordshire region with a requirement for iOS SDK.

1 5 (100.00%) JavaScript
1 5 (100.00%) XML
1 5 (100.00%) Objective-C
1 5 (100.00%) Apple iOS
1 5 (100.00%) iOS Development
2 4 (80.00%) Performance Tuning
2 4 (80.00%) Android SDK
2 4 (80.00%) Android Development
2 4 (80.00%) Wireframes
2 4 (80.00%) Wireshark
2 4 (80.00%) Android
2 4 (80.00%) RESTful
2 4 (80.00%) Java
2 4 (80.00%) VoIP
2 4 (80.00%) C#
3 3 (60.00%) Xcode
4 2 (40.00%) Apple
5 1 (20.00%) Web Development
5 1 (20.00%) JSON
5 1 (20.00%) jQuery
5 1 (20.00%) HTML5
5 1 (20.00%) Social Media
5 1 (20.00%) REST
5 1 (20.00%) Cocoa Touch
5 1 (20.00%) UIKit
5 1 (20.00%) Mobile App
5 1 (20.00%) Retail
5 1 (20.00%) Subversion
5 1 (20.00%) Cocoa
5 1 (20.00%) OO

iOS SDK
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:

Communications & Networking
1 4 (80.00%) VoIP
1 4 (80.00%) Wireshark
Development Applications
1 3 (60.00%) Xcode
2 1 (20.00%) Subversion
General
1 1 (20.00%) Retail
Job Titles
1 5 (100.00%) Developer
1 5 (100.00%) iOS Developer
2 4 (80.00%) Android Developer
2 4 (80.00%) C# Developer
2 4 (80.00%) C# Software Developer
2 4 (80.00%) iOS Android Developer
2 4 (80.00%) Software Developer
3 2 (40.00%) Java Android Developer
3 2 (40.00%) Java Developer
3 2 (40.00%) Java Software Developer
3 2 (40.00%) Objective-C Developer
4 1 (20.00%) Applications Developer
4 1 (20.00%) Mobile Applications Developer
4 1 (20.00%) Mobile Developer
Libraries, Frameworks & Software Standards
1 5 (100.00%) XML
2 4 (80.00%) Android SDK
2 4 (80.00%) RESTful
3 1 (20.00%) Cocoa
3 1 (20.00%) Cocoa Touch
3 1 (20.00%) Core Data
3 1 (20.00%) HTML
3 1 (20.00%) HTML5
3 1 (20.00%) jQuery
3 1 (20.00%) JSON
3 1 (20.00%) REST
3 1 (20.00%) SOAP
3 1 (20.00%) UIKit
3 1 (20.00%) Web Services
Miscellaneous
1 1 (20.00%) Mobile App
1 1 (20.00%) Social Media
Operating Systems
1 5 (100.00%) Apple iOS
2 4 (80.00%) Android
Processes & Methodologies
1 5 (100.00%) iOS Development
2 4 (80.00%) Android Development
2 4 (80.00%) Performance Tuning
2 4 (80.00%) Wireframes
3 1 (20.00%) Front End Development
3 1 (20.00%) OO
3 1 (20.00%) Web Development
Programming Languages
1 5 (100.00%) JavaScript
1 5 (100.00%) Objective-C
2 4 (80.00%) C#
2 4 (80.00%) Java
Vendors
1 2 (40.00%) Apple