iOS & macOS Engineer

I build native Apple apps
and practical AI tools.

I shipped production features to an app used by 5 M+ people, launched LockedIn to 5K+ downloads across 100+ countries, and build tools for Apple platforms that solve real problems.

See my work View resume

5M+

users reached in production

5K+

LockedIn downloads

100+

countries reached

4.7★

average App Store rating

Selected Work

iOS App. Featured

LockedIn

Focus timer with real enforcement. It blocks distracting apps at the system level using Apple’s FamilyControls API. 5K+ downloads across 100+ countries, 4.7★ on the App Store.

Swift SwiftUI FamilyControls watchOS WidgetKit

macOS App

ClarifyLM

A macOS screen assistant that captures what’s on screen and answers questions with on-device AI.

Swift Foundation Models Vision ScreenCaptureKit

Open Source

BetterSwiftUITextEditor

SwiftUI’s TextEditor is missing placeholders, character limits, and return-key handling. This is a drop-in replacement, released as a Swift Package.

Swift SwiftUI SPM

Experience

Brad’s Deals

Summer 2024

iOS Engineer Intern

Shipped two production features to an app serving 5 M+ users. That was twice the typical intern output.
Built a SwiftUI deep-link launcher and integrated it cleanly into a UIKit codebase, reducing testing time across Design, Mobile, and QA.
Built Purchase History with a reusable Core Data module, unifying 10+ inconsistent pricing screens into one component.

Apple

2025 – Present

Product Zone Specialist

Ranked Top 3 in hero product sales store-wide and awarded Employee of the Quarter for consistent, high-impact performance.
Turned technical concepts like Apple Silicon, unified memory, and iCloud workflows into clear recommendations that sped up purchase decisions.

About

Principles

Platform-native

I use platform APIs like FamilyControls, ScreenCaptureKit, and Vision instead of cross-platform abstractions. Users can tell when software feels native to their device.

Ship, then iterate

LockedIn has gone through dozens of iterations since launch. Shipping early to real users matters more than polishing in isolation. Feedback compounds.

Architecture for growth

Protocol-driven backends, modular managers, clear separation of concerns. When LockedIn grew from a timer into a broader productivity app, the architecture held up without rewrites.

Stack

Swift & SwiftUI

Primary language. Declarative UI, @Observable, and Swift Concurrency.

UIKit & Core Data

Production experience integrating SwiftUI into UIKit codebases. Core Data for persistence and modeling.

Apple Frameworks

FamilyControls, ScreenCaptureKit, Vision, ActivityKit, WidgetKit, HealthKit, StoreKit.

Architecture

MVVM with protocol-driven backends. Dependency injection, modular components, testable abstractions.

AI Integration

Apple Foundation Models, Apple Intelligence, on-device inference and cloud APIs.

Tools

Xcode, Instruments, Git, Firebase, Flagsmith, TestFlight.

Currently building

Building ClarifyLM with Apple Foundation Models, shipping updates to LockedIn, and looking for my next iOS role.

Contact

Building on Apple platforms?

I’m looking for my next iOS engineering role. If you need someone who cares about product quality, platform details, and shipping thoughtfully, I’d be glad to talk.

hello@matsvei.com LinkedIn GitHub

I build native Apple apps and practical AI tools.