Is your team losing hours to manual data processing, format conversions, or repetitive document tasks? I build the tools and scripts that eliminate that work: reliable, low-maintenance, and built to last.
With 20+ years of delivering automation and data solutions across industries, I turn complex requirements into clean, working software. Clients come back because the result actually holds up: no duct tape, no black box — just solid code their team can understand and maintain. I adapt the technology to your project (Python, C#, Java, XSLT, JavaScript), not the other way around.
What I deliver:
• Data Extraction & Conversion – Pull and transform data from XML, JSON, CSV, Excel, or legacy formats into PDF, HTML, Word/Excel, databases, or plain text — write once, publish everywhere.
• Document & Publishing Automation – XSLT transformations, single-source publishing pipelines, automated layout and content placement (including Adobe InDesign scripting).
• Workflow Automation – Scripts that eliminate manual steps, schedule processing, and enforce consistency across your data — so nothing falls through the cracks and no one has to babysit the process.
• Custom Tools & Utilities – Command-line tools and lightweight desktop apps (Python, C#, Java) for data processing, report generation, or system-specific tasks.
• System Integration – Connect disparate systems so data flows between them without manual intervention.
I communicate throughout — not just at delivery. You'll always know where things stand, and you'll get documentation so your team isn't dependent on me afterward.
If you have a data, automation, or document challenge, let's talk. I'll give you an honest picture of what's feasible and the smartest approach for your situation.
Python
XML
Java
C#
Automation
XPath
Scripting
XSD
DocBook
Technical Documentation
PDF
Adobe InDesign
Data Extraction
XSLT
User Manual
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
Saqib O.
Lahore, Pakistan
$35/hr
4.9
96 jobs
Your vision deserves a technical partner, not just a developer. I specialize in transforming ideas into high-performance applications across the entire digital ecosystem: mobile, web, and desktop.
I believe great software is a blend of cutting-edge technology and thoughtful user experience. Whether it's a consumer-facing iOS/Android app, a mission-critical web dashboard, or a native Windows/macOS application, I build with a focus on strategy, scalability, and long-term success.
I build everywhere your users are.
→ Mobile: Native (Swift, Kotlin) & Cross-Platform (Flutter, React Native)
→ Web: Modern JS Frameworks (React, Angular, Vue) & Backend (Node.js, Python)
→ Desktop: Electron, .NET MAUI, Native APIs
Ready to build the right solution, not just the easy one? Get in touch.
JavaScript
Objective-C
Swift
React Native
TypeScript
Android
iOS Development
React
Mobile App Development
macOS
Mac OS App Development
Next.js
Full-Stack Development
Hybrid App
WordPress
Taufiq Giri I.
Yogyakarta, Indonesia
$5/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.
iOS
Swift
SwiftUI
UIKit
HealthKit
WatchKit
In-App Purchases
Core Data
CloudKit
iOS Development
Apple Watch
Apple Xcode
Apple HealthKit
watchOS
iPadOS
Rahmat H.
Yogyakarta, Indonesia
$5/hr
5.0
19 jobs
I help businesses automate their workflows using Google Sheets, AppSheet, Apps Script, and custom Chrome Extensions. If your operations still rely on manual spreadsheets, repeated copy-paste, or slow admin processes, I turn them into fast, reliable, and scalable systems.
What I build:
- Google Sheets automation (validation, reports, dashboards, multi-sheet syncing)
- Apps Script development (API integrations, schedulers, PDF generation, triggers)
- AppSheet apps (mobile forms, approval flows, attendance, timesheets, inventory)
- Chrome Extensions (MV3, UI injection, automations, productivity tools)
My approach:
- Understand your workflow and pain points
- Design a clean, simple, sustainable solution
- Build with reliability, scalability, and long-term maintainability
- Provide clear communication, documentation, and support
I specialize in real business automation, not just coding helping clients reduce manual work, eliminate errors, and improve productivity with tools that are easy for teams to use.
If you need a developer who can translate ideas into working systems quickly and professionally, I’m here to help.
Google Chrome Extension
Spreadsheet Automation
Google Spreadsheets API
AppSheet
TypeScript
Supabase
Next.js
Flutter
Quality Assurance
Software Testing
Test Results & Analysis
AI Chatbot
AI Builder
Business Management
Product Management
Junian T.
Surabaya, Indonesia
$25/hr
4.9
174 jobs
• Also known as Windows and macOS App Developer Expert
• 5+ years of experience
• I work on backend, frontend, databases, and Linux server administration
• Main stack: .NET (C# / Visual Basic) and TypeScript / JavaScript
• I build web and multi-platform desktop/mobile applications
📚 Technologies
• My main tech stack is .NET (C# or Visual Basic .NET) and TypeScript / JavaScript
• For .NET, I work with ASP .NET, Blazor, WPF, Windows Forms, MAUI (formerly Xamarin), Avalonia UI, and more
• For TypeScript / JavaScript, I prefer React, but I can also work with Angular, jQuery, or vanilla JS
• I can also develop macOS and iOS apps using Swift and Objective-C
🗼 Server Administration and DevOps
• Familiar with Debian-based Linux distributions like Ubuntu
• Able to handle VPS baremetal or Docker-based setups
• Able to automate workflows using Bash, Python, GitHub Actions, and similar tools
• Experienced with cloud services such as AWS and Azure
📊 Database
• Microsoft SQL Server
• MySQL / MariaDB
• SQLite
• PostgreSQL
• Microsoft Access
💡 Skills
• Strong in algorithm design and analysis
• Great ability to solve programming and system trouble
• Great at optimizing software performance
• Flexible work style
• Adaptive team player
📖 Self-Update
• I regularly study new technologies to stay up to date.
🕰️ Flexible Availability
• Open to collaborate across multiple time zones (US, CA, UK, EU, APAC, etc.)
✅ I’m not a robot.
• I’m a real human and a solo freelancer, not an agency
🙌 Let’s Connect!
• My name is Junian and I’d love to help bring your ideas to life
• Feel free to reach out so we can discuss how I can support your project
• Not a Vibe Coder, but use AI-Assisted Programming tools to solve problems
• Linus Torvalds once said, “Talk is cheap. Show me the code.” So go ahead and check out my GitHub code.
🛠️ Common Tasks and Roles
• Known as the Apple / macOS / iPhone guy
• Build Windows app with .NET Framework & Windows Forms (WinForms) / Windows Presentation Foundation (WPF) / WinUI / Avalonia UI / MAUI / Xamarin
• Build Windows Installer MSI / EXE from existing Windows App by using Wix / WixSharp
• Build macOS app with Swift UI or .NET & Avalonia UI / MAUI / Xamarin
• Build, sign, and notarize macOS app installer (PKG / DMG / ZIP)
• Build web app with ASP .NET & Blazor / React / Angular / Vanilla JavaScript
• Deploy and configure existing web apps by using Docker container to VPS / Cloud providers like AWS, Azure, or GCP
• Ethical decompile / reverse engineer / source code retrieval / deobfuscation of existing .NET EXE / DLL / MSI or NinjaTrader Trading Indicator / strategy
• Automate Windows UI tasks
• Web scraping to retrieve online data / PDF / Images / any other files
• Expert macOS system and app troubleshooting
🙋♂️ What I'm not
• I'm not a Vibe Coder. Don't get me wrong, I use AI to build software, but I don't solely rely on it.
.NET Framework
C#
Desktop Application
Docker
JavaScript
macOS
Windows Presentation Foundation
Windows Forms
Windows App Development
ASP.NET
Database
TypeScript
Node.js
Linux System Administration
Web Development
.NET Core
ASP.NET Core
iOS Development
Flutter
Xamarin
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At A Glance: AppleScript Developers
In business, as well as life, time is always of the essence. In today’s fast-paced world, each second is a valuable commodity to be spent with care, both in personal life as well as in business. Microsoft, one of the most trusted and innovative names in technology, understands the importance of time efficiency. With AppleScript, you will be able to save time and manage repetitive or menial tasks with greater efficiency, allowing you more time to focus on what really matters. A qualified AppleScript programmer or developer can use this tool to integrate multiple applications, making them work together in order to increase productivity. He or she will save you time and energy by using AppleScript to automate repetitive tasks, speeding up your workflow. Examples of these tasks include anything you would normally perform with the Finder and various programs, like opening, changing, duplicating, or saving files — actions you likely spend quite a bit of time doing manually each day. AppleScript can be used with multiple Mac OS X applications, including Microsoft Office and the Adobe Creative Suite, as well as built-in applications such as Text Edit, iWork, calendar, contacts, and mail. A talented AppleScript developer or programmer can even use the AppleScript framework to make computer programs work with websites.
A talented AppleScript programmer or developer will prove to be an invaluable asset to your team, greatly increasing your productivity and efficiency by developing a customized scripting solution tailored to your needs. On Upwork, you will find numerous freelance AppleScript developers and programmers available for hire at competitive rates.