Dustin McCaslin
iOS code audits and native Apple development. Remote-first, based in Oklahoma.
I review code and build native software
I offer structured code audits for iOS and macOS apps — architecture review, security analysis, dependency health checks, performance profiling, and App Store readiness assessments. Every audit produces a written report with prioritized findings and a remediation roadmap.
The audit work is backed by hands-on shipping experience. My portfolio includes 4 shipped apps and 1 in review, spanning creative writing tools, travel journals, card game utilities, memoir apps, and cross-platform prompt libraries. Total output: 200K+ lines of production code and 650+ tests across iOS, iPadOS, and macOS.
Every app I build uses first-party frameworks — SwiftUI, SwiftData, StoreKit 2 — with zero external dependencies on native projects. Every project includes its own security infrastructure: Cloudflare Worker proxies with HMAC signing, rate limiting, and key obfuscation. API keys never touch the client device.
I also integrate LLMs (Claude, GPT) into native apps — multi-model routing, streaming, prompt caching, and safety invariants. Not just API calls, but production-grade AI architecture.
What sets this work apart
Developer-Eye Audits
Most security auditors come from an infosec background — they find vulnerabilities but can't tell you how to fix them in SwiftUI. I review code as someone who's shipped the same frameworks you're using, so findings come with actionable remediation, not just a list of problems.
Production Security Infrastructure
Every app I've shipped includes Cloudflare Worker proxies, HMAC signing, rate limiting, and API key obfuscation. When I audit your security surface, I'm comparing against patterns I've built and deployed myself.
Zero External Dependencies
Every native project runs on pure Apple frameworks. No Alamofire, no Realm, no Firebase SDK on native apps. This means fewer supply chain risks, faster builds, and complete control over the codebase.
Full Pipeline Ownership
From xcodebuild archive through App Store approval. CI scripts, fastlane automation, privacy manifests, territory availability setup, review submission. Every app I build, I ship — the full pipeline, not just the code.
Portfolio at a glance
Need your code reviewed?
Submit your project details and get a scoped proposal within 24 hours.