Delhi, India · Available worldwide, remote-first
Best Mac Developer — Native macOS Swift, SwiftUI, and AppKit Desktop Engineering
Sachin Sharma is a premier Mac Developer based in Delhi, India, specializing in native-quality macOS desktop applications (Swift, SwiftUI, AppKit, Cocoa, Flutter Desktop). With over 1.5+ years of experience in system-level desktop client development, Sachin builds fast, memory-optimized, and sandboxed macOS apps that comply with Apple's strict Mac App Store security guidelines.
I know you want to build something great with Mac Development.
There are 10 lakh+ agencies, 5 crore+ "vibe coders," and 1 crore+ developers out there — and somehow you ended up on this page. That's not an accident, that's a genuine signal. I'm 21, and if you're on my website right now, you're already looking at someone better than most of what's out there. I'd genuinely prefer to talk to you directly rather than have you read through another page. Please feel free to call, message, or email — whichever works best for you.
Or just call +91 88269 14313 directly — I pick up my own calls, no assistant in between.At a Glance
Target Architectures
Apple Silicon (M1/M2/M3), Intel x86_64
Primary Languages
Swift 5.10, Objective-C, C++
UI Frameworks
SwiftUI, AppKit (NSWindow, NSView), Mac Catalyst
Security Sandbox
App Sandbox enabled, Hardened Runtime configuration
Local Persistence
CoreData, FileSystem Access API, SQLite
Distribution Channel
Mac App Store, Developer ID Notarization
Inter-Process Comm
XPC Services, UNIX Sockets, AppleEvents
Build Automation
Fastlane, Xcode Cloud, Apple Notarization tool
2. macOS Security Sandbox & Entitlements Compliance
3. Apple Silicon (M1/M2/M3) Native Compilation
4. Inter-Process Communication (XPC) & System Daemons
5. Apple Developer ID Notarization & Distribution Pipelines
6. Case Study: Shipped macOS Desktop Applications
Sachin Sharma vs. Alternatives
How working with me directly compares to agencies and general freelancers.
| Metric | Sachin Sharma | Agencies | Freelancers |
|---|---|---|---|
| Who you talk to | Me, directly. The person writing your code answers your messages. | Account managers and PMs relay your feedback to developers you never meet. | Variable — depends who you find, timezone gaps are common. |
| What you get | Production apps built end-to-end, not prototypes or tutorial-grade demos. | Junior developers rotated onto your project; senior oversight is inconsistent. | Often strong at scripts and one-off scripts, less so at shipping to production. |
| Performance work | Real optimization: shader precompilation for 60fps Flutter, Edge SSR under 50ms TTFB, bundle budgets enforced. | Standard boilerplate setup, rarely tuned past 'it works'. | Performance tuning usually skipped unless explicitly (and separately) paid for. |
| Code ownership | Fully typed, documented codebase. Full git history handed over on day one. | IP clauses and handover friction are common. | Documentation and typing discipline vary a lot person to person. |
Frequently Asked Questions
Why should we build a native macOS app in Swift rather than Electron?
Native macOS apps start instantly, use up to 90% less memory, support native window behaviors, and integrate with Apple's sandbox security system.
What is Apple Developer ID Notarization?
Notarization is Apple's automated malware check. It signs your binary and registers it with Gatekeeper, allowing direct web downloads to launch without warnings.
How do you handle menu bar status items in macOS?
I use `NSStatusItem` to insert widgets into the macOS menu bar, showing status screens and letting users launch features in the background.
Can we share code between iOS and macOS?
Yes. Using SwiftUI or Mac Catalyst, we can share UI views and business logic across iOS and macOS, lowering development costs.
Do you configure Apple Sandbox Entitlements?
Yes. I configure the App Sandbox, select network permissions, and set file access rules to comply with App Store security guidelines.
What is the difference between AppKit and SwiftUI for macOS?
AppKit is macOS's legacy imperative UI framework, while SwiftUI is Apple's modern declarative UI framework that coordinates updates via state bindings.
What is a security-scoped bookmark in macOS?
A security-scoped bookmark allows sandboxed applications to access user-selected directories and files across application restarts without repeated prompts.
How do you trace leaks on macOS desktop apps?
I profile memory usage using Xcode Instruments, tracking heap growth and locating reference loops during operations.
What is XPC in macOS systems?
XPC is Apple's low-level inter-process communication protocol, allowing applications to delegate tasks to background helper services safely.
Can we configure macOS apps to launch automatically on login?
Yes. I configure login item components using the ServiceManagement framework, launching status bar widgets automatically on system startup.
How do you package macOS applications for web distribution?
I compile binaries with Developer ID certificates, package the assets into disk images (DMG format), and notarize the output files.
What is the Hardened Runtime setting on macOS?
The Hardened Runtime setting adds security constraints to processes, protecting binaries against code injection and memory overrides.
Do you build dark mode support for macOS applications?
Yes. I link UI colors to standard semantic tokens, adjusting layouts automatically when system themes change.
What is Mac Catalyst and when should we configure it?
Mac Catalyst compiles native iOS applications for macOS, allowing teams to share codebases across mobile and desktop platforms.
How do you handle system hotkeys and keyboard shortcuts?
I register global hotkeys using the Carbon API, and bind local keyboard shortcuts directly to SwiftUI menu bar layouts.
Real Apps I've Shipped
Not demos, not tutorials — production code built for real users.
Education
B.Tech CST, MAIT — CGPA 9.08
Hackathons
Finalist × 3 (Code Kshetra 2.0, Level Supermind, DTU Brainwave)
Currently
Developer at ESPO — promoted from intern in 60 days