Hire the Best Apple Core Data Professionals

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Taufiq Giri I.

Yogyakarta, Indonesia

$6/hr
4.7
31 jobs

Are you looking for an experienced iOS developer who can build, improve, or scale your Apple application with clean architecture, excellent performance, and production-ready code? I'm Taufiq Giri, a Senior iOS Developer with 5+ years of experience building high-quality applications for iPhone, iPad, Apple Watch, and Mac. I've successfully delivered 20+ applications across various industries, including AI, digital banking, fintech, healthcare, education, e-commerce, productivity, HRMS, fitness, and social networking. I specialize in building native Apple applications using Swift, SwiftUI, and UIKit, while also providing complete mobile solutions with React Native, Capacitor, Firebase, Supabase, and Node.js when projects require cross-platform development or backend services. Whether you need a brand-new MVP, feature enhancements, AI integration, backend development, performance optimization, bug fixing, or App Store deployment, I can help transform your ideas into reliable, scalable, and user-friendly applications. 🚀 Core Expertise Apple Platform Development: • Native iOS Development (Swift, SwiftUI, UIKit) • iPadOS, watchOS & macOS Development • Apple Human Interface Guidelines (HIG) • MVVM, VIPER & MVC Architecture • App Performance Optimization • Bug Fixing & Code Refactoring Backend & Cloud: • Firebase (Authentication, Firestore, Storage, Cloud Messaging) • Supabase • Node.js & Express.js • PostgreSQL • CloudKit • REST APIs & GraphQL • Third-party SDK Integration Apple Frameworks: • HealthKit • WatchKit • WidgetKit • Core Data • SwiftData • Realm • MapKit • Core Location • AVFoundation • Authentication (Apple, Google, Firebase, OAuth) Monetization & Distribution: • StoreKit • RevenueCat • Superwall • In-App Purchases & Subscriptions • Push Notifications (APNs & Firebase Cloud Messaging) • TestFlight • App Store Connect • App Store Submission & Review AI & Modern Development: • OpenAI API Integration • Google Gemini API Integration • AI-powered Mobile Applications • Claude Code • OpenAI Codex • AI-assisted Development Workflow 💡 Services I Offer ✅ Native iOS App Development ✅ SwiftUI & UIKit Development ✅ Apple Watch (watchOS) Applications ✅ macOS Applications ✅ React Native Development ✅ Capacitor Mobile Applications ✅ Backend Development (Firebase, Supabase, Node.js) ✅ API Integration ✅ AI Integration (OpenAI & Gemini) ✅ In-App Purchases & Subscription Systems ✅ Push Notifications ✅ Firebase & Cloud Services ✅ Bug Fixing & Performance Optimization ✅ App Store Deployment & Release Management ✅ Long-term Maintenance & Feature Development 🌍 Industries I've Worked With • AI Applications • Digital Banking & Fintech • Healthcare • Fitness & Wellness • E-commerce • Education • HR Management Systems • Productivity Apps • Social Networking • Job Portals ⭐ Why Clients Choose Me ✔ Production-ready, clean, and maintainable code ✔ Strong communication and transparent progress updates ✔ Pixel-perfect UI following Apple's Human Interface Guidelines ✔ Reliable delivery with attention to performance and scalability ✔ Experience building applications used by real users ✔ Comfortable working independently or as part of an existing development team ✔ Long-term support after launch 🛠 Technologies Mobile: Swift • SwiftUI • UIKit • React Native • Capacitor Backend: Firebase • Supabase • Node.js • Express.js • PostgreSQL • CloudKit Frameworks: HealthKit • WatchKit • WidgetKit • StoreKit • RevenueCat • Superwall • Core Data • SwiftData • Realm • MapKit • AVFoundation Development: REST API • GraphQL • Git • GitHub • Xcode • TestFlight • App Store Connect AI: OpenAI API • Gemini API • Claude Code • OpenAI Codex If you're looking for a developer who values quality, communication, and long-term collaboration, I'd be happy to discuss your project. Feel free to send me an invitation or message. I'd love to learn more about your project and help bring your ideas to life.

  • Core Data
  • iOS
  • Swift
  • SwiftUI
  • UIKit
  • HealthKit
  • WatchKit
  • In-App Purchases
  • CloudKit
  • iOS Development
  • Apple Watch
  • Apple Xcode
  • Apple HealthKit
  • watchOS
  • iPadOS
Uzma R.

Ahmadpur East, Pakistan

$5/hr
5.0
3 jobs

Data Entry Specialist, Data Collection, B2B lead Generation, Influencer List Building & Outreach Specialist. I am a Data Entry Specialist with more than 5 years of experience in Data Entry, Data Mining, Data Collection, Data Research & Verification, Web Research, Lead Generation, Online Research, CRM Data Entry, Shopify Data Entry, and Virtual Assistance... 👉 𝗠𝘆 𝗰𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 & 𝗦𝗸𝗶𝗹𝗹𝘀: ✧ Data Entry ✧ Data Collection & Verification ✧ Excel Data Entry ✧ Data Mining ✧ PDF to Excel or Word ✧ Data Cleaning ✧ CRM Data Entry ✧ Web Research and Online Research ✧ Bank Statements Data Entry ✧ Scanned Pages to Excel Data Entry ✧ Images to Excel or Word ✧ Shopify Data Entry ✧ E-commerce product listing ✧ Data Entry into HubSpot / Monday com ✧ Sales Lead Listing ✧ Emails and Phone Finding ✧ Data Merge ✧ Data Formatting ✧ Real Estate Data Entry ✧ Microsoft Excel Expert ✧ Document Conversion ✧ Internet Research ✧ Virtual Assistant ✧ Data Analysis ✧ Accurate Data Entry ✧ B2B Lead Generation ✧ Email List Building ✧ Phone Number Research For Sales growth ✧ Influencer List Building (TikTok, Instagram, Youtube, other Social pages) ✧ LinkedIn Research / Outreach Specialist ✧ GoHighLevel · HubSpot · Zoho · Salesforce · Monday CRM Specialist ✧ Intelligent Document Processing (IDP) ✧ Data Annotation / labeling ✧ Public Record Search 👉 Click Invite or send me a message and Hire me. Let's get started. I deliver fast, accurate results that save you both time and money.

  • Data Entry
  • Data Extraction
  • B2B Lead Generation
  • Lead Generation
  • Data Annotation
  • EMR Data Entry
  • Data Processing
  • Data Analysis
  • Data Cleaning
  • Data Collection
  • Data Mining
  • Data Labeling
  • Data Management
  • Email List
  • Online Research
  • AI Content Creation
  • AI Model Training
  • Administrative Support
  • Virtual Assistance
  • Shopify
Tercel T.

Marathon, Texas

$5/hr
5.0
5 jobs

I help clients evaluate AI systems, improve search quality, conduct UX evaluations, annotate data, and complete accurate data entry. I'm detail-oriented, analytical, and experienced with AI evaluation, search quality rating, data annotation, UX testing, Excel, Google Sheets, web research, CRM data entry, PDF-to-spreadsheet conversion, data collection and organization, file formatting, administrative support, and copy/paste tasks.

  • Data Entry
  • General Transcription
  • Microsoft Excel
  • Mathematics
  • Microsoft Office
  • Proofreading
  • Google Sheets
  • WordPress Website Design
  • Data Annotation
  • AI Fact-Checking
Muaaz A.

Faisalabad, Pakistan

$6/hr
5.0
5 jobs

I'm Reliable Advanced Data Entry & Data Collection Specialist, with solid experience in B2B Lead Generation & Data Researcher, and AI Data annotation & Labeling Expert... Over the past 2+ years, I helped businesses and built prospect lists across multiple industries, managed data entry and CRM workflows for real estate and e-commerce clients, and worked hands-on with CVAT and Roboflow on AI annotation projects. I move between structured data (spreadsheets, CRM records, product listings) and unstructured data (web research, image labeling, PDF extraction) without losing accuracy or speed. ✅ 𝗠𝘆 𝗦𝗸𝗶𝗹𝗹𝘀 𝗮𝗻𝗱 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲: 👉🏼 Data Research & Lead Generation 👉🏼 Data Entry 👉🏼 Data Collection 👉🏼 Data Mining 👉🏼 AI Data Research & Verification 👉🏼 Data Extraction 👉🏼 LinkedIn Lead Research 👉🏼 Prospect List Development 👉🏼 Email & Phone Finding 👉🏼 LinkedIn & Email Outreach 👉🏼 CRM Management (Salesforce, HubSpot, Zoho, Pipedrive, GHL) 👉🏼 Data Annotation & AI/ML Data Prep 👉🏼 Data Annotation 👉🏼 Image Labeling 👉🏼 CVAT 👉🏼 Roboflow 👉🏼 AI/ML Ready Data Preparation 👉🏼 General & Admin Support 👉🏼 Microsoft Office & Excel 👉🏼 PDF Conversion 👉🏼 Web Research 👉🏼 E-commerce Product Listing 👉🏼 Real Estate Data Entry & Property Listings Let's talk about your project and how I can help. Just send me a message or invite me. I usually respond within minutes. Cheers, Muaaz

  • Data Entry
  • Data Annotation
  • B2B Lead Generation
  • Lead Generation
  • Data Collection
  • CVAT
  • Roboflow
  • LinkedIn Lead Generation
  • Prospect List
  • Data Mining
  • Data Extraction
  • CRM Software
  • Salesforce
  • Microsoft Excel
  • PDF Conversion
  • Market Research
  • Online Research
  • Email Outreach
  • SEO Keyword Research
Haider A.

Sheikhupura, Pakistan

$35/hr
5.0
63 jobs

TOP-RATED Senior IOS developer 🎖️ 30+ Apps from scratch 🎖️ 50+ projects completed 🎖️ 100% Job Success 🎖️ 100% Client satisfaction Are you in search of a top-tier iOS developer who not only delivers exceptional quality but also brings a wealth of expertise in UI/UX design, Photoshop, web development, and Android to the table? Look no further! I have a proven track record of successfully completing multiple projects, and my skills extend beyond iOS development. Here's what you can expect when you choose me for your project: Project Expertise: Utilizing APIs for robust backend functionality Implementing push notifications for user engagement Integrating Maps SDK for location-based features Ensuring secure authentication with Firebase Authentication Leveraging CocoaPods for efficient code management Crafting responsive Auto-Layouts for a seamless user experience Completed Projects: Developed a Food Delivery App for users, drivers, and restaurant partners Created a Booking-Ride App with user, driver, and admin interfaces Designed an Online-Shopping App for users, drivers, and merchants Proficient in development for iPad, iPhone, and Watch-OS platforms What I Offer: iOS development expertise in Swift and Objective-C, guaranteeing high-quality work Android development skills using Java to cater to a wider audience Web development proficiency with Ruby on Rails for versatile solutions Why Choose Me? Extensive knowledge of both Android and iPhone architecture and databases Ensuring applications work seamlessly across all devices and platforms Competitive hourly rates that provide excellent value for your investment Commitment to delivering projects on or before deadlines with unwavering passion I am as enthusiastic about your project as you are, driven by a genuine love for creating apps Consistent delivery of high-quality work is my hallmark Stay up-to-date with the latest technologies to offer innovative solutions for your projects When you hire me, you're not just getting an iOS developer; you're gaining a versatile, passionate, and dedicated partner in turning your app ideas into reality. Let's collaborate to create something exceptional!

  • Swift
  • Firebase
  • Apple Xcode
  • iOS
  • AWS AppSync
  • iOS Development
  • Smartwatch
  • Apollo.io
  • iPhone & iPad Apps
  • Social Media Account Integration
  • GraphQL
  • In-App Search
Sucharu H.

Chandigarh, India

$15/hr
4.9
156 jobs

Available for quick fixes, urgent bug resolution, and fast MVP delivery. I help startups, businesses, and entrepreneurs build high-quality iOS apps — from idea to App Store launch and long-term maintenance. With 8+ years in the Apple ecosystem and 250+ apps shipped, I deliver fast, stable, and user-friendly applications for ⟐ iPhone ⟐ iPad ⟐ AppleWatch/WatchKit ⟐ AppleTV/tvOS ⟐ CarPlay Whether you need a brand-new app, bug fixes, performance optimization, or want to make your app iOS 26 ready with Apple's Liquid Glass design — I deliver production-ready results, on time. 𝗪𝗵𝗮𝘁 𝗜 𝗖𝗮𝗻 𝗗𝗼 𝗙𝗼𝗿 𝗬𝗼𝘂 ⟐ Full iOS App Development — Complete apps in Swift and Objective-C with clean architecture and scalable code ⟐ Bug Fixing & Performance — Crash resolution, memory leaks, slow UI, and App Store rejection issues ⟐ App Store Launch & Updates — Deployment, TestFlight, compliance, and version upgrades ⟐ Firebase & API Integration — Auth, push notifications, real-time databases, analytics, and backend connectivity ⟐ MVP Development — Rapid prototyping and launch-ready builds for startups ⟐ Ongoing Maintenance — Feature additions, iOS version compatibility, and long-term stability 𝗪𝗵𝘆 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 ✔ 250+ apps delivered — I've seen almost every type of project ✔ Fast turnaround — urgent fixes and MVPs are my specialty ✔ Clear communication — daily updates, no disappearing acts ✔ Clean, maintainable code — built for scale, not just for launch ✔ On-time delivery — predictable timelines, zero invoice surprises 𝗧𝗲𝗰𝗵 𝗦𝘁𝗮𝗰𝗸 Swift · Objective-C · SwiftUI · UIKit · Core Data · Firebase · REST APIs · Push Notifications · Auto Layout · RevenueCat · Superwall · App Store Deployment 𝗟𝗲𝘁'𝘀 𝗯𝘂𝗶𝗹𝗱 𝘆𝗼𝘂𝗿 𝗮𝗽𝗽. Send me a message with your project details — I'm happy to give you an honest assessment, even if you're still figuring out the scope.

  • Native App Development
  • Objective-C
  • Firebase
  • Swift
  • Mobile App Development
  • iOS Development
  • iOS
  • Apple Xcode
  • AI Mobile App Development
  • iPad App Development
  • Apple Watch
  • iPhone & iPad Apps
  • iPhone
  • iPhone UI Design
  • SwiftUI

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How to Hire Top Apple Core Data Developers

It’s important to note that Core Data is not a database but a framework for working with complex object graphs locally on a device. If your app has a large model layer with complex object relationships, a Core Data specialist can help.

So how do you hire Apple Core Data developers? What follows are some tips for finding top Apple Core Data developers on Upwork.

How to shortlist Apple Core Data professionals

As you’re browsing available Apple Core Data consultants, it can be helpful to develop a shortlist of the professionals you may want to interview. You can screen profiles on criteria such as:

  • Technology fit. You want an Apple Core Data developer who understands the technologies behind your iOS or macOS project.
  • Project experience. Screen candidate profiles for specific skills and experience (e.g., using Core Data with React Native).
  • Feedback. Check reviews from past clients for glowing testimonials or red flags that can tell you what it’s like to work with a particular Apple Core Data developer.

How to write an effective Apple Core Data job post

With a clear picture of your ideal Apple Core Data developer in mind, it’s time to write that job post. Although you don’t need a full job description as you would when hiring an employee, aim to provide enough detail for a freelancer to know if they’re the right fit for the project.

An effective Apple Core Data job post should include:

  • Scope of work: From persistent data storage to local caching, list all the deliverables you’ll need.
  • Project length: Your job post should indicate whether this is a smaller or larger project.
  • Background: If you prefer experience with certain technologies or developer tools, mention this here.
  • Budget: Set a budget and note your preference for hourly rates vs. fixed-price contracts.

Ready to build performant data models for your iOS and macOS apps? Log in and post your Apple Core Data job on Upwork today.

APPLE CORE DATA DEVELOPERS FAQs

What is Apple Core Data? 

Apple Core Data is an object graph and persistence framework developed for handling the model (in a model-view-controller pattern) in iOS and macOS applications.

Here’s a quick overview of the skills you should look for in Apple Core Data professionals:

  • Apple Core Data
  • iOS/macOS development
  • Apple Xcode
  • Programming languages (e.g.,Swift, Objective-C)

Why do you want to hire Apple Core Data developers?

The trick to finding top Apple Core Data developers is to identify your needs. Is your goal to manage a large collection of data objects locally on your device? Do you require someone familiar with the MVVM (model-view-viewmodel) programming pattern? The cost of your project will depend largely on your scope of work and the specific skills needed to bring your project to life.

How much does it cost to hire an Apple Core Data developer?

Rates can vary due to many factors, including expertise and experience, location, and market conditions.

  • An experienced Apple Core Data developer may command higher fees but also work faster, have more-specialized areas of expertise, and deliver a higher-quality product.
  • A freelancer who is still in the process of building a client base may price their Apple Core Data services more competitively.

Which one is right for you will depend on the specifics of your project.

How long should you contract an Apple Core Data developer to complete your project?

As difficult as it is to estimate how long you will need an Apple Core Data developer, budgeting time is very important to keeping your project on track.

Be prepared to budget more time for more-demanding Apple Core Data projects. For example, providing a simple local data storage solution for your iOS app will typically take less time than building a complex object graph solution for a macOS desktop app.

What are the steps involved to hire Apple Core Data developers?

Here’s how to hire Apple Core Data consultants in four simple steps:

  1. Identify your project needs, such as providing data storage for iOS or macOS apps.
  2. Define the scope of work and write a detailed job post. Be specific about deliverables (e.g., syncing data between Core Data and iCloud).
  3. Review proposals and shortlist potential Apple Core Data developers for unique skills needed to bring your project to life (e.g., experience with Apple UIKit framework).
  4. Interview Apple Core Data talent to gauge whether they’re the right fit for your project.