Coby Whittekiend
Taking new contract work

Native iOS & Mac apps, built and shipped.

I'm Coby, a Swift and SwiftUI engineer in Southern Utah. For three years I've been the lead iOS engineer on the Utah State Parks app. I take projects from the first conversation to an App Store release, and I can also join an existing codebase and start shipping features.

Start a project See my work
100K+downloads on the app I lead
27Kmonthly active users
3+ yrsshipping Swift to the App Store
560automated tests in my open-source Mac app
Services

What I can build for you

I work in native Swift for Apple platforms. You get one engineer who handles the whole job: design, architecture, code, testing and the App Store release.

New iOS apps

From an idea or a Figma file to a SwiftUI app on the App Store. I'll scope it with you, build it, put it on TestFlight and submit it.

Features & fixes for your app

I join your codebase, learn your conventions and start shipping. That includes new features, bug fixes, crash reduction, SwiftUI migrations and adopting new iOS releases.

Maps & location

Interactive Mapbox maps, CoreLocation, geofenced check-ins and offline content for places with no signal. I've built all of these for state parks.

Accessibility audits

VoiceOver, Dynamic Type and color contrast. I audit your app and write up the issues, then fix them myself or hand them to your team. I led the ADA work on the State Parks app.

macOS apps & tools

Native SwiftUI Mac apps, including ones that drive other processes, manage files, use the Keychain and talk to outside services. BEER is an example.

Offline, sync & reliability

Offline caching, sync that doesn't lose data, unit tests around the risky parts, and GitHub Actions CI. This is the work that keeps the support inbox quiet.

Selected work

Apps people use every day

One production app with a large audience, and one open-source Mac app that I designed, built and maintain myself.

Utah State Parks

Lead iOS Engineer at Parkspass · 2023 to present
SwiftSwiftUISwiftDataCombineMapboxWebSockets
  • Lead iOS development of the official app for Utah's state parks: 100K+ downloads and 27K monthly users.
  • Built the core features: digital park passes, visitor check-in, interactive Mapbox maps, deep linking, park amenities and offline brochures.
  • Led the ADA accessibility work: VoiceOver navigation, Dynamic Type and contrast fixes, plus audits.
  • Added unit tests and safeguards to the offline cache so bad server data or a full disk doesn't break the app.

BEER

Creator · open source · macOS
SwiftUIC# / .NETSteamKit2Wine / GPTKXCTestGitHub Actions
  • A native Mac app that installs and runs Windows Steam games on Apple Silicon, with saves synced to Steam Cloud.
  • About 33K lines of Swift and C# across a SwiftUI app and a .NET helper that speaks Steam's client protocol.
  • A two-way save sync engine that backs up before every write and resolves conflicts with timestamps and SHA-1 hashes.
  • 560 offline tests and CI on every pull request. 9 stable releases.
Read the case study GitHub
BEER's game page for Dark Souls Remastered, showing the Play button, runtime settings and Steam Cloud sync status

Short-form video news app

Primary iOS Developer · Blake Technologies

Built the iOS app for a vertical-swipe video news product, from concept to a feature-complete build, as the main iOS developer. The product didn't launch.

Savzy & Greater Zion

iOS feature work

Shipped iOS features for Savzy, a consumer app on the App Store, and I support the Greater Zion tourism app alongside the State Parks app.

How it works

A simple way to work together

You talk to the person writing the code, with no account managers in between.

Free intro call

About 30 minutes on what you need, who it's for and what's already built. If I'm not the right fit, I'll say so.

Written scope & quote

A short document with what I'll deliver, the milestones and the price. You can pay a fixed price per milestone or an hourly rate.

Weekly builds

A TestFlight build and a short update every week, so you see progress on your own phone and can steer early.

Launch & handoff

I handle App Store submission. You own the code, the docs and the tests. I'm available for maintenance afterward if you want it.

About

Hi, I'm Coby.

I build software for Apple platforms, and I care most about the parts users never notice until they break: offline behavior, saved data and accessibility.

I've been the lead iOS engineer on the Utah State Parks app since 2023, and I started building BEER because I wanted to play my PC games on my MacBook and keep my saves. I trained at Dixie Technical College in iOS and Android development and placed third in the collegiate division of Southern Utah Code Camp.

I'm based in Washington, Utah, and I work remotely with clients anywhere in US time zones.

SwiftSwiftUIUIKitSwiftDataCombineasync/awaitXCTestCoreLocationMapboxRESTWebSocketsMVVMGitHub ActionsKotlinC# / .NET
  • Based inWashington, UT
  • WorksRemote · US time zones
  • FocusiOS · macOS · Swift
  • Production appUtah State Parks
  • Open sourceBEER
  • TrainingDixie Technical College
  • BusinessSaint Widukind Technologies

Have an app that needs building?

Tell me what you're working on and when you need it. I'll reply within one business day.

Email coby@whittekiend.com LinkedIn GitHub