Core Data Contracts

Apple Core Data
UK

The table below provides summary statistics for contract job vacancies requiring Core Data skills. It includes a benchmarking guide to the contractor rates offered in vacancies that cited Core Data over the 6 months leading up to 18 July 2025, comparing them to the same period in the previous two years.

6 months to
18 Jul 2025
Same period 2024 Same period 2023
Rank 549 595 684
Rank change year-on-year +46 +89 +185
Contract jobs citing Core Data 4 1 5
As % of all contract jobs advertised in the UK 0.012% 0.002% 0.009%
As % of the Libraries, Frameworks & Software Standards category 0.054% 0.011% 0.040%
Number of daily rates quoted 3 1 4
10th Percentile £393 - £606
25th Percentile £419 £613 £636
Median daily rate (50th Percentile) £475 £625 £656
Median % change year-on-year -24.00% -4.73% +45.78%
75th Percentile £494 £638 £657
90th Percentile £498 - £657
UK excluding London median daily rate £500 - -

All Software Libraries and Frameworks
UK

Core Data falls under the Software Libraries and Frameworks category. For comparison with the information above, the following table provides summary statistics for all contract job vacancies requiring technical specification, industry standards, software libraries and framework skills.

Contract vacancies with a requirement for technical specification, industry standards, software libraries and framework skills 7,352 8,993 12,558
As % of all contract IT jobs advertised in the UK 22.55% 21.35% 22.53%
Number of daily rates quoted 4,967 6,172 9,079
10th Percentile £350 £350 £381
25th Percentile £413 £425 £460
Median daily rate (50th Percentile) £508 £539 £550
Median % change year-on-year -5.84% -2.00% -0.90%
75th Percentile £638 £656 £675
90th Percentile £750 £788 £788
UK excluding London median daily rate £471 £500 £500
% change year-on-year -5.80% - -2.44%
Number of hourly rates quoted 154 269 156
10th Percentile £30.08 £22.50 £28.75
25th Percentile £38.16 £43.00 £50.00
Median hourly rate £55.00 £55.00 £62.75
Median % change year-on-year - -12.35% +16.47%
75th Percentile £67.50 £70.00 £75.00
90th Percentile £81.01 £74.09 £80.25
UK excluding London median hourly rate £62.50 £58.15 £59.03
% change year-on-year +7.48% -1.49% +7.33%

Core Data
Job Vacancy Trend

Job postings citing Core Data as a proportion of all IT jobs advertised.

Job vacancy trend for Core Data in the UK

Core Data
Contractor Daily Rate Trend

3-month moving average daily rate quoted in jobs citing Core Data.

Daily rate trend for Core Data in the UK

Core Data
Contractor Hourly Rate Trend

3-month moving average hourly rates quoted in jobs citing Core Data.

Hourly rate trend for Core Data in the UK

Core Data
Top 5 Contract Locations

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing Core Data within the UK over the 6 months to 18 July 2025. 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
Jobs
Work from Home +39 3 £438 -30.00% 7
UK excluding London - 2 £500 - 5
Scotland - 2 £500 -
England +53 1 £400 -36.00% 7
London +28 1 £400 -36.00% 5

Core Data
Co-occurring Skills and Capabilities by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same employment type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Cloud Services
1 2 (50.00%) Firebase
Development Applications
1 4 (100.00%) Git
2 1 (25.00%) JIRA
2 1 (25.00%) Xcode
General
1 2 (50.00%) Public Sector
1 2 (50.00%) Social Skills
Job Titles
1 4 (100.00%) Developer
1 4 (100.00%) iOS Developer
2 1 (25.00%) Senior
2 1 (25.00%) Senior Developer
2 1 (25.00%) Senior iOS Developer
Libraries, Frameworks & Software Standards
1 4 (100.00%) RESTful
2 3 (75.00%) UIKit
3 2 (50.00%) SwiftUI
4 1 (25.00%) AVFoundation
4 1 (25.00%) Core Animation
4 1 (25.00%) iOS SDK
Miscellaneous
1 3 (75.00%) Mobile App
2 1 (25.00%) Self-Motivation
Operating Systems
1 4 (100.00%) Apple iOS
2 1 (25.00%) Mac OS
2 1 (25.00%) tvOS
2 1 (25.00%) watchOS
Processes & Methodologies
1 4 (100.00%) iOS Development
2 2 (50.00%) Agile
2 2 (50.00%) CI/CD
2 2 (50.00%) Cybersecurity
2 2 (50.00%) Mobile Application Development
2 2 (50.00%) MVVM
2 2 (50.00%) OWASP
2 2 (50.00%) Unit Testing
2 2 (50.00%) User Experience
3 1 (25.00%) Architectural Patterns
3 1 (25.00%) Case Management
3 1 (25.00%) Clean Code
3 1 (25.00%) Code Quality
3 1 (25.00%) Continuous Improvement
3 1 (25.00%) Deployment Diagram
3 1 (25.00%) Performance Optimisation
3 1 (25.00%) Scrum
3 1 (25.00%) Sprint Planning
3 1 (25.00%) Test Automation
Programming Languages
1 4 (100.00%) Objective-C
1 4 (100.00%) Swift
Quality Assurance & Compliance
1 2 (50.00%) NCSC
Vendors
1 1 (25.00%) Apple